Stanislav Fomichev [Tue, 8 Jul 2014 18:05:16 +0000 (22:05 +0400)]
perf trace: Add pagefault statistics
'perf trace' can show summary of events using -S option. This commit
also reports number of major/minor pagefault events in this summary.
$ perf trace -s --pf all -- sleep 1
Summary of events:
sleep (18604), 275 events, 99.6%, 197 minfaults, 0.000 msec
syscall calls min avg max stddev
(msec) (msec) (msec) (%)
--------------- -------- --------- --------- --------- ------
read 2 0.000 0.001 0.002 100.00%
open 3 0.004 0.005 0.007 21.13%
close 3 0.001 0.001 0.001 1.37%
fstat 3 0.001 0.002 0.002 10.66%
mmap 8 0.002 0.004 0.006 10.69%
mprotect 4 0.003 0.005 0.008 24.68%
munmap 1 0.005 0.005 0.005 0.00%
brk 3 0.001 0.002 0.003 28.08%
access 3 0.002 0.003 0.005 24.48%
nanosleep 1 1000.747 1000.747 1000.747 0.00%
execve 8 0.000 0.033 0.246 91.00%
arch_prctl 1 0.001 0.001 0.001 0.00%
Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1404842716-19190-1-git-send-email-stfomichev@yandex-team.ru
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 8 Jul 2014 15:40:11 +0000 (12:40 -0300)]
perf tools: Suggest using -f to override perf.data file ownership message
# id
uid=0(root) gid=0(root) groups=0(root)
# ls -la perf.data
-rw-------. 1 acme acme 20720 Jul 8 11:35 perf.data
Previously:
# perf report
file perf.data not owned by current user or root
Now:
# perf report
File perf.data not owned by current user or root (use -f to override)
Suggested-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-0j2wuuegnhv3gljbil8ld6kx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Andy Shevchenko [Fri, 4 Jul 2014 11:43:48 +0000 (14:43 +0300)]
perf tools: Convert open coded equivalents to asprintf()
The following snippet
V = malloc(S);
if (!V) { }
sprintf(V, ...)
Can be easily changed to a one line:
if (asprintf(&V, ...) < 0) { }
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Link: http://lkml.kernel.org/r/1404474229-15272-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Alexander Yarygin [Thu, 3 Jul 2014 14:08:22 +0000 (18:08 +0400)]
perf tools: Allow to use cpuinfo on s390
This patch defines CPUINFO_PROC for s390 and implements get_cpuid().
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/87ioneo7qh.wl%yarygin@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Alexander Yarygin [Thu, 3 Jul 2014 13:59:51 +0000 (17:59 +0400)]
perf kvm: Refactoring of cpu_isa_config()
cpu_isa_config() does two different things: searching for cpuid and
initializing perf_kvm_stat struct with proper parameters.
Let's move initialization to a separate function cpu_isa_init(), which
is used to initialize all possible ISAs and can be used to init
arch-depended things.
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1404395992-17095-4-git-send-email-yarygin@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Alexander Yarygin [Thu, 3 Jul 2014 13:59:50 +0000 (17:59 +0400)]
perf kvm: Simplify exit reasons tables definitions
The perf_kvm_stat struct keeps the size of a table of exit reasons in
the field 'exit_reasons_size'.
The field is initialized and then used by get_exit_reason() for serial
access to the table, so that the calling function does not actually need
to know table size.
Usage of tables with 'end of sequence' marker simplifies the
get_exit_reason() function.
Also the patch introduces a define_exit_reasons_table, which makes it
easier to define new tables.
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1404395992-17095-3-git-send-email-yarygin@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Alexander Yarygin [Thu, 3 Jul 2014 13:59:49 +0000 (17:59 +0400)]
perf kvm: Introduce HAVE_KVM_STAT_SUPPORT flag
kvm stat support is currently conditional on i386/x86_64. Let's abstract
this into a HAVE_KVM_STAT_SUPPORT flag, so that other architectures can
support kvm stat as well.
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1404395992-17095-2-git-send-email-yarygin@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Mon, 7 Jul 2014 18:23:44 +0000 (15:23 -0300)]
perf hists browser: Left justify column headers
Looks better and avoids it moving to the end of the screen as the column
width changes over time in 'perf top'.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-yc144ai5jye3yl3h5yxw0scd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Fri, 27 Jun 2014 16:26:58 +0000 (18:26 +0200)]
perf hists browser: Add ui.show-headers config file option
Adding ui.show-headers config file option to define if the histogram
entries headers will start visible or not.
Currently columns headers are displayed by default, following
lines in ~/.perfconfig file will disable that:
[ui]
show-headers = false
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1403886418-5556-4-git-send-email-jolsa@kernel.org
[ renamed symbol_conf.show_headers to .show_hist_headers ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Sat, 14 Jun 2014 13:44:52 +0000 (15:44 +0200)]
perf hists browser: Display columns header text on 'H' press
Displaying columns header text whenever 'H' is pressed,
and hiding it on on another press.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-w9pcqpum5erza2a05ysvollz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Sat, 14 Jun 2014 13:44:52 +0000 (15:44 +0200)]
perf hists browser: Add support for showing columns header
Open up space to show a one-line header text whenever 'H' is pressed,
hide it on another key press.
Follow up patch will format this line from the set of headers used.
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-m894d6qk30h3qofw4k8neq4q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 1 Jul 2014 20:01:01 +0000 (17:01 -0300)]
perf hists browser: Override ui_browser refresh_dimensions method
This requires some more work so that we can really just use the width of
current entries when we want to partition the screen.
Right now its just a prep patch so that we can have where to update
ui_browser->rows when introducing the column headers line, that will be
togglable, so we need to update it everytime we refresh the dimensions
of the browser.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ovk654rx525b4657y0mh6ku9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 1 Jul 2014 19:42:24 +0000 (16:42 -0300)]
perf hists browser: Introduce gotorc method
That will allow us to add a row offset to open up space for the column
headers.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-otc3ployokfci5qi81o7jo22@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 1 Jul 2014 19:34:42 +0000 (16:34 -0300)]
perf ui browser: Allow overriding refresh_dimensions method
Some browsers, like the hist_browser, may want to be notified everytime
a refresh_dimensions is needed, so that it can reset ui_browser->rows,
for instance, or do some other related reaction to screen resizings.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ielvluuemzn30bneh0zk3twi@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 1 Jul 2014 14:07:54 +0000 (11:07 -0300)]
perf ui browser: Add ->rows to disambiguate from ->height
The ui_browser->height is about the whole browser "window", including
any header, status lines or any other space needed for some "Yes", "No",
etc buttons a descendent browser, like hist_browser, may have.
Since the navigation is done mostly on the ui_browser methods, it needs
to know how many rows are on the screen, while details about what other
components are, say, if a header (that may be composed of multiple
lines, etc) is present.
Besides this we'll need to add a ui_browser->refresh_dimensions() hook
so that browsers like hist_browser can update ->rows in response to
screen resizes, this will come in a follow up patch.
This patch just adds ->rows and updates it when updating ->height, keeps
using ->height for the only other widget that can come with ui_browser,
the scrollbar, that goes on using all the height on the rightmost column
in the screen, using ->rows for the keyboard navigation needs.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-xexmwg1mv7u03j5imn66jdak@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Ingo Molnar [Sat, 5 Jul 2014 09:29:32 +0000 (11:29 +0200)]
Merge tag 'perf-core-for-mingo' of git://git./linux/kernel/git/jolsa/perf into perf/core
Pull perf/core improvements and fixes from Jiri Olsa:
* Handle the num array type in python properly (Sebastian Andrzej Siewior)
* Fix wrong condition for allocation failure (Jiri Olsa)
* Adjust callchain based on DWARF debug info on powerpc (Sukadev Bhattiprolu)
* Fix a risk for doing free on uninitialized pointer in traceevent lib (Rickard Strandqvist)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Sat, 5 Jul 2014 09:28:13 +0000 (11:28 +0200)]
Merge tag 'perf-core-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
New features:
* Add support for pagefault tracing in 'trace', please see multiple examples
in the changeset messages (Stanislav Fomichev).
User visible changes:
* Fallback to syscalls:* when raw_syscalls:* is not available in the perl and
python perf scripts. (Daniel Bristot de Oliveira)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Rasmus Villemoes [Thu, 19 Jun 2014 13:15:31 +0000 (15:15 +0200)]
perf/x86: Micro-optimize nhmex_rbox_get_constraint()
Flipping the LSB doesn't require four lines of code. This shaves a few
bytes of the generated code, including a branch.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1403183731-15402-1-git-send-email-linux@rasmusvillemoes.dk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Jiri Olsa [Tue, 24 Jun 2014 08:20:24 +0000 (10:20 +0200)]
perf: Make perf_event_init_context() function static
Leftover from '
8dc85d5 perf: Multiple task contexts'.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1403598026-2310-1-git-send-email-jolsa@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Vince Weaver [Thu, 19 Jun 2014 18:40:09 +0000 (14:40 -0400)]
powerpc, perf: Use common PMU interrupt disabled code
Transition to using the new generic PERF_PMU_CAP_NO_INTERRUPT method for
failing a sampling event when no PMU interrupt is available.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1406191435440.27913@vincent-weaver-1.umelst.maine.edu
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Cody P Schafer <cody@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linux-kernel@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Sebastian Andrzej Siewior [Tue, 27 May 2014 16:14:34 +0000 (18:14 +0200)]
perf script: Handle the num array type in python properly
The raw_syscalls:sys_enter tracer for instance passes has one argument
named 'arg' which is an array of 6 integers. Right the python scripts
gets only 0 passed as an argument. The reason is that
pevent_read_number() can not handle data types of 48 and returns always
0.
This patch changes this by passing num array as list of nums which fit
the description. As a result python will now see a list named arg which
contains 6 (integer) items.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/n/1401207274-8170-2-git-send-email-bigeasy@linutronix.de
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Sebastian Andrzej Siewior [Tue, 27 May 2014 16:14:33 +0000 (18:14 +0200)]
perf script: Move the number processing into its own function
I was going to change something here and the result was so much on the
right side of the screen that I decided to move that piece into its own
function.
This patch should make no function change except the moving the code
into its own function.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/n/1401207274-8170-1-git-send-email-bigeasy@linutronix.de
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Jiri Olsa [Fri, 20 Jun 2014 08:56:34 +0000 (10:56 +0200)]
perf tools: Fix wrong condition for allocation failure
Check real allocated pointer for NULL.
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-5rfzbalwjphmdzzil74eazyl@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Sukadev Bhattiprolu [Wed, 25 Jun 2014 15:49:03 +0000 (08:49 -0700)]
perf tools powerpc: Adjust callchain based on DWARF debug info
When saving the callchain on Power, the kernel conservatively saves excess
entries in the callchain. A few of these entries are needed in some cases
but not others. We should use the DWARF debug information to determine
when the entries are needed.
Eg: the value in the link register (LR) is needed only when it holds the
return address of a function. At other times it must be ignored.
If the unnecessary entries are not ignored, we end up with duplicate arcs
in the call-graphs.
Use the DWARF debug information to determine if any callchain entries
should be ignored when building call-graphs.
Callgraph before the patch:
14.67% 2234 sprintft libc-2.18.so [.] __random
|
--- __random
|
|--61.12%-- __random
| |
| |--97.15%-- rand
| | do_my_sprintf
| | main
| | generic_start_main.isra.0
| | __libc_start_main
| | 0x0
| |
| --2.85%-- do_my_sprintf
| main
| generic_start_main.isra.0
| __libc_start_main
| 0x0
|
--38.88%-- rand
|
|--94.01%-- rand
| do_my_sprintf
| main
| generic_start_main.isra.0
| __libc_start_main
| 0x0
|
--5.99%-- do_my_sprintf
main
generic_start_main.isra.0
__libc_start_main
0x0
Callgraph after the patch:
14.67% 2234 sprintft libc-2.18.so [.] __random
|
--- __random
|
|--95.93%-- rand
| do_my_sprintf
| main
| generic_start_main.isra.0
| __libc_start_main
| 0x0
|
--4.07%-- do_my_sprintf
main
generic_start_main.isra.0
__libc_start_main
0x0
TODO: For split-debug info objects like glibc, we can only determine
the call-frame-address only when both .eh_frame and .debug_info
sections are available. We should be able to determin the CFA
even without the .eh_frame section.
Fix suggested by Anton Blanchard.
Thanks to valuable input on DWARF debug information from Ulrich Weigand.
Reported-by: Maynard Johnson <maynard@us.ibm.com>
Tested-by: Maynard Johnson <maynard@us.ibm.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20140625154903.GA29607@us.ibm.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Rickard Strandqvist [Tue, 24 Jun 2014 11:09:10 +0000 (13:09 +0200)]
tools lib traceevent: Fix a risk for doing free on uninitialized pointer
Fix a risk of doing free on an uninitialized pointer.
This was found using a static code analysis program called cppcheck.
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Link: http://lkml.kernel.org/r/1403608150-13037-1-git-send-email-rickard_strandqvist@spectrumdigital.se
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Stanislav Fomichev [Thu, 26 Jun 2014 16:14:28 +0000 (20:14 +0400)]
perf trace: Add possibility to switch off syscall events
Currently, we may either trace syscalls or syscalls+pagefaults.
We'd like to be able to trace *only* pagefaults and this commit
implements this feature.
Example:
[root@zoo /]# echo 1 > /proc/sys/vm/drop_caches ; trace --no-syscalls -F -p `pidof xchat`
0.000 ( 0.000 ms): xchat/4574 majfault [g_unichar_get_script+0x11] => /usr/lib64/libglib-2.0.so.0.3800.2@0xc403b (x.)
0.202 ( 0.000 ms): xchat/4574 majfault [_cairo_hash_table_lookup+0x53] => 0x2280ff0 (?.)
20.854 ( 0.000 ms): xchat/4574 majfault [gdk_cairo_set_source_pixbuf+0x110] => /usr/bin/xchat@0x6da1f (x.)
1022.000 ( 0.000 ms): xchat/4574 majfault [__memcpy_sse2_unaligned+0x29] => 0x7ff5a8ca0400 (?.)
^C[root@zoo /]#
Below we can see malloc calls, 'trace' reading symbol tables in libraries to
resolve symbols, etc.
[root@zoo /]# echo 1 > /proc/sys/vm/drop_caches ; trace --no-syscalls -F all --cpu 1 sleep 10
0.000 ( 0.000 ms): chrome/26589 minfault [0x1b53129] => /tmp/perf-26589.map@0x33cbcbf7f000 (x.)
96.477 ( 0.000 ms): libvirtd/947 minfault [copy_user_enhanced_fast_string+0x5] => 0x7f7685bba000 (?k)
113.164 ( 0.000 ms): Xorg/1063 minfault [0x786da] => 0x7fce52882a3c (?.)
7162.801 ( 0.000 ms): chrome/3747 minfault [0x8e1a89] => 0xfcaefed0008 (?.)
<SNIP>
7773.138 ( 0.000 ms): chrome/3886 minfault [0x8e1a89] => 0xfcb0ce28008 (?.)
7992.022 ( 0.000 ms): chrome/26574 minfault [0x1b5a708] => 0x3de7b5fc5000 (?.)
8108.949 ( 0.000 ms): qemu-system-x8/4537 majfault [_int_malloc+0xee] => 0x7faffc466d60 (?.)
8108.975 ( 0.000 ms): qemu-system-x8/4537 minfault [_int_malloc+0x102] => 0x7faffc466d60 (?.)
<SNIP>
8148.174 ( 0.000 ms): qemu-system-x8/4537 minfault [_int_malloc+0x102] => 0x7faffc4eb500 (?.)
8270.855 ( 0.000 ms): chrome/26245 minfault [do_bo_emit_reloc+0xdb] => 0x45d092bc004 (?.)
8270.869 ( 0.000 ms): chrome/26245 minfault [do_bo_emit_reloc+0x108] => 0x45d09150000 (?.)
no symbols found in /usr/lib64/libspice-server.so.1.9.0, maybe install a debug package?
8273.831 ( 0.000 ms): trace/20198 majfault [__memcmp_sse4_1+0xbc6] => /usr/lib64/libspice-server.so.1.9.0@0xdf000 (d.)
<SNIP>
8275.121 ( 0.000 ms): trace/20198 minfault [dso__load+0x38] => 0x14fe756 (?.)
no symbols found in /usr/lib64/libelf-0.158.so, maybe install a debug package?
8275.142 ( 0.000 ms): trace/20198 minfault [__memcmp_sse4_1+0xbc6] => /usr/lib64/libelf-0.158.so@0x0 (d.)
<SNIP>
[root@zoo /]#
Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1403799268-1367-6-git-send-email-stfomichev@yandex-team.ru
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Stanislav Fomichev [Thu, 26 Jun 2014 16:14:26 +0000 (20:14 +0400)]
perf trace: Add pagefaults record and replay support
Previous commit added live pagefault trace support, this one adds record
and replay support.
Example:
[root@zoo /]# echo 1 > /proc/sys/vm/drop_caches ; trace -F all record -a sleep 10
[ perf record: Woken up 0 times to write data ]
[ perf record: Captured and wrote 1029.722 MB perf.data (~
44989242 samples) ]
[root@zoo /]# ls -la perf.data
-rw-------. 1 root root
1083921722 Jun 26 17:44 perf.data
[root@zoo /]# perf evlist
raw_syscalls:sys_enter
raw_syscalls:sys_exit
major-faults
minor-faults
[root@zoo /]# trace -i perf.data | grep -v trace\/ | tail -15
156.137 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
156.139 ( 0.000 ms): perl/18476 minfault [Perl_sv_clear+0x123] => 0x0 (?.)
156.140 ( 0.000 ms): perl/18476 minfault [Perl_sv_clear+0xc4] => 0x0 (?.)
156.144 ( 0.000 ms): perl/18476 minfault [_int_free+0xda] => 0x0 (?.)
156.151 ( 0.000 ms): perl/18476 minfault [_int_free+0x1df] => 0x0 (?.)
156.158 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
156.161 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
156.168 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
156.172 ( 0.000 ms): perl/18476 minfault [0xb4243] => 0x0 (?.)
156.173 ( 0.000 ms): perl/18476 minfault [_int_free+0xda] => 0x0 (?.)
156.183 ( 0.000 ms): perl/18476 minfault [Perl_hfree_next_entry+0xb4] => 0x0 (?.)
156.197 ( 0.000 ms): perl/18476 minfault [_int_free+0x1df] => 0x0 (?.)
156.216 ( 0.000 ms): perl/18476 minfault [Perl_sv_clear+0x123] => 0x0 (?.)
156.221 ( 0.000 ms): perl/18476 minfault [Perl_sv_clear+0x123] => 0x0 (?.)
[root@zoo /]#
Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1403799268-1367-4-git-send-email-stfomichev@yandex-team.ru
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Stanislav Fomichev [Thu, 26 Jun 2014 16:14:25 +0000 (20:14 +0400)]
perf trace: Add support for pagefault tracing
This patch adds optional pagefault tracing support to 'perf trace'.
Using -F/--pf option user can specify whether he wants minor, major or
all pagefault events to be traced. This patch adds only live mode,
record and replace will come in a separate patch.
Example output:
1756272.905 ( 0.000 ms): curl/5937 majfault [0x7fa7261978b6] => /usr/lib/x86_64-linux-gnu/libkrb5.so.26.0.0@0x85288 (d.)
1862866.036 ( 0.000 ms): wget/8460 majfault [__clear_user+0x3f] => 0x659cb4 (?k)
Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1403799268-1367-3-git-send-email-stfomichev@yandex-team.ru
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Stanislav Fomichev [Thu, 26 Jun 2014 16:14:24 +0000 (20:14 +0400)]
perf trace: Add perf_event parameter to tracepoint_handler
It will be used by next pagefault tracing patches in the series.
Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1403799268-1367-2-git-send-email-stfomichev@yandex-team.ru
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Daniel Bristot de Oliveira [Wed, 11 Jun 2014 19:09:08 +0000 (16:09 -0300)]
perf scripts: Fallback to syscalls:* when raw_syscalls:* is not available
Older kernels (e.g., RHEL6) do system call tracing via the
syscalls:sys_{enter,exit} tracepoints rather than using raw_syscalls:*.
Update perf python and perl scripts to fallback to syscalls:* when
raw_syscalls:* isn't available.
Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Luis Claudio R. Goncalves <lgoncalv@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/5a6c64081a3375bc3bc66351b14559678ef4d71e.1402507908.git.bristot@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Ingo Molnar [Wed, 25 Jun 2014 05:44:19 +0000 (07:44 +0200)]
Merge tag 'perf-core-for-mingo' of git://git./linux/kernel/git/jolsa/perf into perf/core
Pull perf/core improvements and fixes from Jiri Olsa:
* Updates from trace-cmd for traceevent plugin_kvm plus args cleanup (Steven Rostedt, Jan Kiszka)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 25 Jun 2014 05:42:24 +0000 (07:42 +0200)]
Merge tag 'perf-core-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
* Add --repeat global option to 'perf bench' to be used in benchmarks
such as the existing 'futex' one, that was modified to use it instead
of a local option. (Davidlohr Bueso)
* Fix fd -> pathname resolution in 'trace', be it using /proc or
a vfs_getname probe point. (Arnaldo Carvalho de Melo)
* Add suggestion of how to set perf_event_paranoid sysctl, to help
non-root users trying tools like 'trace' to get a working environment.
(Arnaldo Carvalho de Melo)
Fixes:
* Fix memory leak in the 'sched-messaging' perf bench test. (Davidlohr Bueso)
* The -o and -n 'perf bench mem' options are mutually exclusive, emit error
when both are specified. (Davidlohr Bueso)
* Fix scrollbar refresh row index in the ui browser, problem exposed now
that headers will be added and will be allowed to be switched on/off.
(Jiri Olsa)
Cleanups:
* Remove needless reassignments in 'trace' (Arnaldo Carvalho de Melo)
* Cache the is_exit syscall test in 'trace) (Arnaldo Carvalho de Melo)
* No need to reimplement err() in 'perf bench sched-messaging', drop barf().
(Davidlohr Bueso).
* Remove ev_name argument from perf_evsel__hists_browse, can be obtained
from the other parameters. (Jiri Olsa)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 25 Jun 2014 05:41:54 +0000 (07:41 +0200)]
Merge branch 'perf/urgent' into perf/core, to pick up fixes and refresh the branch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 25 Jun 2014 05:40:45 +0000 (07:40 +0200)]
Merge tag 'perf-urgent-for-mingo' of git://git./linux/kernel/git/jolsa/perf into perf/urgent
Pull perf/urgent fixes from Jiri Olsa:
* Fix kernel start address lookup in report code (Simon Que)
* Fix segfault in cumulative.callchain report (Jiri Olsa)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Linus Torvalds [Sun, 22 Jun 2014 05:02:54 +0000 (19:02 -1000)]
Linux 3.16-rc2
Linus Torvalds [Sun, 22 Jun 2014 05:01:15 +0000 (19:01 -1000)]
Merge branch 'i2c/for-next' of git://git./linux/kernel/git/wsa/linux
Pull i2c new drivers from Wolfram Sang:
"Here is a pull request from i2c hoping for the "new driver" rule.
Originally, I wanted to send this request during the merge window, but
code checkers with very recent additions complained, so a few fixups
were needed. So, some more time went by and I merged rc1 to get a
stable base"
So the "new driver" rule is really about drivers that people absolutely
need for the kernel to work on new hardware, which is not so much the
case for i2c. So I considered not pulling this, but eventually
relented.
Just for FYI: the whole (and only) point of "new drivers" is not that
new drivers cannot regress things (they can, and they have - by
triggering badly tested code on machines that never triggered that code
before), but because they can bring to life machines that otherwise
wouldn't be useful at all without the drivers.
So the new driver rule is for essential things that actual consumers
would care about, ie devices like networking or disk drivers that matter
to normal people (not server people - they run old kernels anyway, so
mainlining new drivers is irrelevant for them).
* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: sun6-p2wi: fix call to snprintf
i2c: rk3x: add NULL entry to the end of_device_id array
i2c: sun6i-p2wi: use proper return value in probe
i2c: sunxi: add P2WI (Push/Pull 2 Wire Interface) controller support
i2c: sunxi: add P2WI DT bindings documentation
i2c: rk3x: add driver for Rockchip RK3xxx SoC I2C adapter
Linus Torvalds [Sun, 22 Jun 2014 02:40:30 +0000 (16:40 -1000)]
Merge tag 'locks-v3.16-2' of git://git.samba.org/jlayton/linux
Pull file locking fixes from Jeff Layton:
"File locking related bugfixes
Nothing too earth-shattering here. A fix for a potential regression
due to a patch in pile #1, and the addition of a memory barrier to
prevent a race condition between break_deleg and generic_add_lease"
* tag 'locks-v3.16-2' of git://git.samba.org/jlayton/linux:
locks: set fl_owner for leases back to current->files
locks: add missing memory barrier in break_deleg
Linus Torvalds [Sun, 22 Jun 2014 02:38:16 +0000 (16:38 -1000)]
Merge branch 'rc-fixes' of git://git./linux/kernel/git/mmarek/kbuild
Pull kbuild fixes from Michal Marek:
"There are three fixes for regressions caused by the relative paths
series: deb-pkg, tar-pkg and *docs did not work with O=.
Plus, there is a fix for the linux-headers deb package and a fixed
typo. These are not regression fixes but are safe enough"
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
kbuild: fix a typo in a kbuild document
builddeb: fix missing headers in linux-headers package
Documentation: Fix DocBook build with relative $(srctree)
kbuild: Fix tar-pkg with relative $(objtree)
deb-pkg: Fix for relative paths
Linus Torvalds [Sun, 22 Jun 2014 00:21:43 +0000 (14:21 -1000)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"This fixes some lockups in btrfs reported with rc1. It probably has
some performance impact because it is backing off our spinning locks
more often and switching to a blocking lock. I'll be able to nail
that down next week, but for now I want to get the lockups taken care
of.
Otherwise some more stack reduction and assorted fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix wrong error handle when the device is missing or is not writeable
Btrfs: fix deadlock when mounting a degraded fs
Btrfs: use bio_endio_nodec instead of open code
Btrfs: fix NULL pointer crash when running balance and scrub concurrently
btrfs: Skip scrubbing removed chunks to avoid -ENOENT.
Btrfs: fix broken free space cache after the system crashed
Btrfs: make free space cache write out functions more readable
Btrfs: remove unused wait queue in struct extent_buffer
Btrfs: fix deadlocks with trylock on tree nodes
Linus Torvalds [Sun, 22 Jun 2014 00:20:38 +0000 (14:20 -1000)]
Merge branch 'for-3.16' of git://linux-nfs.org/~bfields/linux
Pull nfsd bugfixes from Bruce Fields:
"Fixes for a new regression from the xdr encoding rewrite, and a
delegation problem we've had for a while (made somewhat more annoying
by the vfs delegation support added in 3.13)"
* 'for-3.16' of git://linux-nfs.org/~bfields/linux:
NFSD: fix bug for readdir of pseudofs
NFSD: Don't hand out delegations for 30 seconds after recalling them.
Linus Torvalds [Sat, 21 Jun 2014 17:07:17 +0000 (07:07 -1000)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"This is larger than usual: the main reason are the ARM symbol lookup
speedups that came in late and were hard to resist.
There's also a kprobes fix and various tooling fixes, plus the minimal
re-enablement of the mmap2 support interface"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
x86/kprobes: Fix build errors and blacklist context_track_user
perf tests: Add test for closing dso objects on EMFILE error
perf tests: Add test for caching dso file descriptors
perf tests: Allow reuse of test_file function
perf tests: Spawn child for each test
perf tools: Add dso__data_* interface descriptons
perf tools: Allow to close dso fd in case of open failure
perf tools: Add file size check and factor dso__data_read_offset
perf tools: Cache dso data file descriptor
perf tools: Add global count of opened dso objects
perf tools: Add global list of opened dso objects
perf tools: Add data_fd into dso object
perf tools: Separate dso data related variables
perf tools: Cache register accesses for unwind processing
perf record: Fix to honor user freq/interval properly
perf timechart: Reflow documentation
perf probe: Improve error messages in --line option
perf probe: Improve an error message of perf probe --vars mode
perf probe: Show error code and description in verbose mode
perf probe: Improve error message for unknown member of data structure
...
Linus Torvalds [Sat, 21 Jun 2014 17:06:02 +0000 (07:06 -1000)]
Merge branch 'locking-urgent-for-linus.patch' of git://git./linux/kernel/git/tip/tip
Pull rtmutex fixes from Thomas Gleixner:
"Another three patches to make the rtmutex code more robust. That's
the last urgent fallout from the big futex/rtmutex investigation"
* 'locking-urgent-for-linus.patch' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rtmutex: Plug slow unlock race
rtmutex: Detect changes in the pi lock chain
rtmutex: Handle deadlock detection smarter
Linus Torvalds [Sat, 21 Jun 2014 16:47:01 +0000 (06:47 -1000)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 patches from Martin Schwidefsky:
"A couple of bug fixes, a debug change for qdio, an update for the
default config, and one small extension.
The watchdog module based on diagnose 0x288 is converted to the
watchdog API and it now works under LPAR as well"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/ccwgroup: use ccwgroup_ungroup wrapper
s390/ccwgroup: fix an uninitialized return code
s390/ccwgroup: obtain extra reference for asynchronous processing
qdio: Keep device-specific dbf entries
s390/compat: correct ucontext layout for high gprs
s390/cio: set device name as early as possible
s390: update default configuration
s390: avoid format strings leaking into names
s390/airq: silence lockdep warning
s390/watchdog: add support for LPAR operation (diag288)
s390/watchdog: use watchdog API
s390/sclp_vt220: Enable ASCII console per default
s390/qdio: replace shift loop by ilog2
s390/cio: silence lockdep warning
s390/uaccess: always load the kernel ASCE after task switch
s390/ap_bus: Make modules parameters visible in sysfs
Linus Torvalds [Sat, 21 Jun 2014 16:45:54 +0000 (06:45 -1000)]
Merge tag 'for-linus' of git://github.com/gxt/linux
Pull UniCore32 bug fixes from Guan Xuetao:
"This includes bugfixes to make unicore32 successfully build under
defconfig, and some changes for allmodconfig (though not finished)"
* tag 'for-linus' of git://github.com/gxt/linux:
unicore32: Remove ARCH_HAS_CPUFREQ config option
UniCore32: Change git tree location information in MAINTAINERS
arch: unicore32: ksyms: export '__cpuc_coherent_kern_range' to avoid compiling failure
arch: unicore32: ksyms: export 'pm_power_off' to avoid compiling failure.
arch: unicore32: ksyms: export additional find_first_*() to avoid compiling failure
arch:unicore32:mm: add devmem_is_allowed() to support STRICT_DEVMEM
unicore32: include: asm: add missing ')' for PAGE_* macros in pgtable.h
arch/unicore32/kernel/setup.c: add generic 'screen_info' to avoid compiling failure
drivers: scsi: mvsas: fix compiling issue by adding 'MVS_' for "enum pci_interrupt_cause"
arch: unicore32: kernel: ksyms: remove 'bswapsi2' and 'muldi3' to avoid compiling failure
arch/unicore32/kernel/ksyms.c: remove 2 export symbols to avoid compiling failure
drivers/rtc/rtc-puv3.c: remove "&dev->" for typo issue MIME-Version: 1.0
drivers/rtc/rtc-puv3.c: use dev_dbg() instead of dev_debug() for typo issue
arch/unicore32/include/asm/io.h: add readl_relaxed() generic definition
arch/unicore32/include/asm/ptrace.h: add generic definition for profile_pc()
arch/unicore32/mm/alignment.c: include "asm/pgtable.h" to avoid compiling error
arch/unicore32/kernel/clock.c: add readl() and writel() for 'PM_' macros
arch/unicore32/kernel/module.c: use __vmalloc_node_range() instead of __vmalloc_area()
arch/unicore32/kernel/ksyms.c: remove several undefined exported symbols
Linus Torvalds [Sat, 21 Jun 2014 16:43:19 +0000 (06:43 -1000)]
Merge tag 'char-misc-3.16-rc2' of git://git./linux/kernel/git/gregkh/char-misc
Pull char / misc driver fixes from Greg KH:
"Here are 3 patches, one a revert of the UIO patch you objected to in
3.16-rc1 and that no one wanted to defend, a w1 driver bugfix, and a
MAINTAINERS update for the vmware balloon driver.
All of these, except for the MAINTAINERS update which just got added,
have been in linux-next just fine"
* tag 'char-misc-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
MAINTAINERS: add entry for VMware Balloon driver
w1: mxc_w1: Fix incorrect "presence" status
Revert "uio: fix vma io range check in mmap"
Linus Torvalds [Sat, 21 Jun 2014 16:42:40 +0000 (06:42 -1000)]
Merge tag 'staging-3.16-rc2' of git://git./linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are a few fixes for staging and iio drivers that resolve issues
reported in 3.16-rc1.
All have been in linux-next just fine"
* tag 'staging-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
imx-drm: parallel-display: Fix DPMS default state.
staging: android: timed_output: fix use after free of dev
staging: comedi: addi_apci_1564: add addi_watchdog dependency
staging: rtl8723au: Reference correct firmwarefiles with MODULE_FIRMWARE()
staging: rtl8723au: Request correct firmware file for A-cut parts
iio: adc: checking for NULL instead of IS_ERR() in probe
iio: adc: at91: signedness bug in at91_adc_get_trigger_value_by_name()
iio: mxs-lradc: fix divider
iio: Fix endianness issue in ak8975_read_axis()
staging/iio: IIO_SIMPLE_DUMMY_BUFFER neds IIO_BUFFER
twl4030-madc: Request processed values in twl4030_get_madc_conversion
staging: iio: tsl2x7x_core: fix proximity treshold
iio: Fix two mpl3115 issues in measurement conversion
iio: hid-sensors: Get feature report from sensor hub after changing power state
Linus Torvalds [Sat, 21 Jun 2014 16:41:42 +0000 (06:41 -1000)]
Merge tag 'tty-3.16-rc2' of git://git./linux/kernel/git/gregkh/tty
Pull tty/serial bugfixes from Greg KH:
"Here are some tty / serial driver bugfixes for 3.16-rc2 that resolve
some reported issues. The samsung driver build error itself has been
reported by a bunch of people, sorry about that one. The others are
all tiny and everyone seems to like them in linux-next so far"
* tag 'tty-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty/serial: fix 8250 early console option passing to regular console
tty: Correct INPCK handling
serial: Fix IGNBRK handling
serial: samsung: Fix build error
Linus Torvalds [Sat, 21 Jun 2014 16:41:07 +0000 (06:41 -1000)]
Merge tag 'usb-3.16-rc2' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some USB fixes for 3.16-rc2 that resolve some reported
issues. All of these have been in linux-next for a while with no
problems"
* tag 'usb-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: usbtest: add a timeout for scatter-gather tests
USB: EHCI: avoid BIOS handover on the HASEE E200
usb: fix hub-port pm_runtime_enable() vs runtime pm transitions
usb: quiet peer failure warning, disable poweroff
usb: improve "not suspended yet" message in hub_suspend()
xhci: Fix sleeping with IRQs disabled in xhci_stop_device()
usb: fix ->update_hub_device() vs hdev->maxchild
Dmitry Torokhov [Fri, 20 Jun 2014 17:14:58 +0000 (10:14 -0700)]
MAINTAINERS: add entry for VMware Balloon driver
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Simon Que [Mon, 16 Jun 2014 18:32:09 +0000 (11:32 -0700)]
perf symbols: Get kernel start address by symbol name
The function machine__get_kernel_start_addr() was taking the first symbol
of kallsyms as the start address. This is incorrect in certain cases
where the first symbol is something at 0, while the actual kernel
functions begin at a later point (e.g. 0x80200000).
This patch fixes machine__get_kernel_start_addr() to search for the
symbol "_text" or "_stext", which marks the beginning of kernel mapping.
This was already being done in machine__create_kernel_maps(). Thus, this
patch is just a refactor, to move that code into
machine__get_kernel_start_addr().
Signed-off-by: Simon Que <sque@chromium.org>
Link: http://lkml.kernel.org/r/1402943529-13244-1-git-send-email-sque@chromium.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Jiri Olsa [Sun, 15 Jun 2014 08:22:15 +0000 (10:22 +0200)]
perf tools: Fix segfault in cumulative.callchain report
When cumulative callchain mode is on, we could get samples with
with no actual hits. This breaks the assumption of the annotation
code, that each sample has annotation counts allocated and leads
to segfault.
Fixing this by additional checks for annotation stats.
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1402821332-12419-1-git-send-email-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Linus Torvalds [Fri, 20 Jun 2014 04:58:57 +0000 (18:58 -1000)]
Merge tag 'pm+acpi-3.16-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
"These are fixes mostly (ia64 regression related to the ACPI
enumeration of devices, cpufreq regressions, fix for I2C controllers
included in Intel SoCs, mvebu cpuidle driver fix related to sysfs)
plus additional kernel command line arguments from Kees to make it
possible to build kernel images with hibernation and the kernel
address space randomization included simultaneously, a new ACPI
battery driver quirk for a system with a broken BIOS and a couple of
ACPI core cleanups.
Specifics:
- Fix for an ia64 regression introduced during the 3.11 cycle by a
commit that modified the hardware initialization ordering and made
device discovery fail on some systems.
- Fix for a build problem on systems where the cpufreq-cpu0 driver is
built-in and the cpu-thermal driver is modular from Arnd Bergmann.
- Fix for a recently introduced computational mistake in the
intel_pstate driver that leads to excessive rounding errors from
Doug Smythies.
- Fix for a failure code path in cpufreq_update_policy() that fails
to unlock the locks acquired previously from Aaron Plattner.
- Fix for the cpuidle mvebu driver to use shorter state names which
will prevent the sysfs interface from returning mangled strings.
From Gregory Clement.
- ACPI LPSS driver fix to make sure that the I2C controllers included
in BayTrail SoCs are not held in the reset state while they are
being probed from Mika Westerberg.
- New kernel command line arguments making it possible to build
kernel images with hibernation and kASLR included at the same time
and to select which of them will be used via the command line (they
are still functionally mutually exclusive, though). From Kees
Cook.
- ACPI battery driver quirk for Acer Aspire V5-573G that fails to
send battery status change notifications timely from Alexander
Mezin.
- Two ACPI core cleanups from Christoph Jaeger and Fabian Frederick"
* tag 'pm+acpi-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpuidle: mvebu: Fix the name of the states
cpufreq: unlock when failing cpufreq_update_policy()
intel_pstate: Correct rounding in busy calculation
ACPI: use kstrto*() instead of simple_strto*()
ACPI / processor replace __attribute__((packed)) by __packed
ACPI / battery: add quirk for Acer Aspire V5-573G
ACPI / battery: use callback for setting up quirks
ACPI / LPSS: Take I2C host controllers out of reset
x86, kaslr: boot-time selectable with hibernation
PM / hibernate: introduce "nohibernate" boot parameter
cpufreq: cpufreq-cpu0: fix CPU_THERMAL dependency
ACPI / ia64 / sba_iommu: Restore the working initialization ordering
Linus Torvalds [Fri, 20 Jun 2014 04:49:37 +0000 (18:49 -1000)]
Merge tag 'sound-3.16-rc2' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"The significant part here is a few security fixes for ALSA core
control API by Lars. Besides that, there are a few fixes for ASoC
sigmadsp (again by Lars) for building properly, and small fixes for
ASoC rsnd, MMP, PXA and FSL, in addition to a fix for bogus WARNING in
i915/HD-audio binding"
* tag 'sound-3.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: control: Make sure that id->index does not overflow
ALSA: control: Handle numid overflow
ALSA: control: Don't access controls outside of protected regions
ALSA: control: Fix replacing user controls
ALSA: control: Protect user controls against concurrent access
drm/i915, HD-audio: Don't continue probing when nomodeset is given
ASoC: fsl: Fix build problem
ASoC: rsnd: fixup index of src/dst mod when capture
ASoC: fsl_spdif: Fix integer overflow when calculating divisors
ASoC: fsl_spdif: Fix incorrect usage of regmap_read()
ASoC: dapm: Make sure register value is in sync with DAPM kcontrol state
ASoC: sigmadsp: Split regmap and I2C support into separate modules
ASoC: MMP audio needs sram support
ASoC: pxa: add I2C dependencies as needed
Linus Torvalds [Fri, 20 Jun 2014 04:40:36 +0000 (18:40 -1000)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"This looks bigger than it is, as one of the nouveau firmware fixes
("drm/gf100-/gr: report class data to host on fwmthd failure")
regenerates a bunch of the firmware files after changing the assembly
by a few lines, without that, its more of a
36 files changed, 370 insertions(+), 129 deletions(-)
It contains some vt.c fixes acked by Greg, for rare hard hangs on i915
loading, that also fixes hangs on reload and spurious register write
errors.
drm core: one fix for uninit memory
nouveau: displayport rework caused a few regressions, Ben has been
fixing them as the appear, along with some other fixes
radeon: pageflipping regression fix, deep color fix, mode validation
fixes
i915: fbc disable, vga console kick off, backlight fix, divide-by-zero
fix"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (33 commits)
drm: fix uninitialized acquire_ctx fields (v2)
drm/radeon: Fix radeon_irq_kms_pflip_irq_get/put() imbalance
Revert "drm/radeon: remove drm_vblank_get|put from pflip handling"
drm/radeon: improve dvi_mode_valid
drm/radeon: update mode_valid testing for DP
drm/radeon: Use dce5/6 hdmi deep color clock setup also on dce8+
drm/nouveau/disp: fix oops in destructor with headless cards
drm/gf117/i2c: no aux channels on this chipset
drm/nouveau/doc: update the thermal documentation
drm/nouveau/pwr: fix typo in fifo wrap handling
drm/nv50/disp: fix a potential oops in supervisor handling
drm/nouveau/disp/dp: don't touch link config after success
drm/nouveau/kms: reference vblank for crtc during pageflip.
drm/gk104/fb/ram: fixups from an earlier search+replace
drm/nv50/gr: remove an unneeded write while initialising PGRAPH
drm/nv50/gr: fix overlap while zeroing zcull regions
drm/gf100-/gr: report class data to host on fwmthd failure
drm/gk104/ibus: increase various random timeouts
drm/gk104/clk: only touch divider for mode we'll be using
drm/radeon: Bypass hw lut's for > 8 bpc framebuffer scanout.
...
Linus Torvalds [Fri, 20 Jun 2014 03:56:43 +0000 (17:56 -1000)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A smaller collection of fixes for the block core that would be nice to
have in -rc2. This pull request contains:
- Fixes for races in the wait/wakeup logic used in blk-mq from
Alexander. No issues have been observed, but it is definitely a
bit flakey currently. Alternatively, we may drop the cyclic
wakeups going forward, but that needs more testing.
- Some cleanups from Christoph.
- Fix for an oops in null_blk if queue_mode=1 and softirq completions
are used. From me.
- A fix for a regression caused by the chunk size setting. It
inadvertently used max_hw_sectors instead of max_sectors, which is
incorrect, and causes hangs on btrfs multi-disk setups (where hw
sectors apparently isn't set). From me.
- Removal of WQ_POWER_EFFICIENT in the kblockd creation. This was a
recent addition as well, but it actually breaks blk-mq which relies
on strict scheduling. If the workqueue power_efficient mode is
turned on, this breaks blk-mq. From Matias.
- null_blk module parameter description fix from Mike"
* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: bitmap tag: fix races in bt_get() function
blk-mq: bitmap tag: fix race on blk_mq_bitmap_tags::wake_cnt
blk-mq: bitmap tag: fix races on shared ::wake_index fields
block: blk_max_size_offset() should check ->max_sectors
null_blk: fix softirq completions for queue_mode == 1
blk-mq: merge blk_mq_drain_queue and __blk_mq_drain_queue
blk-mq: properly drain stopped queues
block: remove WQ_POWER_EFFICIENT from kblockd
null_blk: fix name and description of 'queue_mode' module parameter
block: remove elv_abort_queue and blk_abort_flushes
Linus Torvalds [Fri, 20 Jun 2014 03:53:20 +0000 (17:53 -1000)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"A first set of bug fixes that didn't make it for the merge window, and
two Kconfig cleanups that still make sense at this point.
Unfortunately, one of the two cleanups caused an unintended change in
the original version, so we had to revert one part of it and do some
more testing to ensure the rest is really fine. There was also a
last-minute rebase of the patches to remove another bad commit"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: use menuconfig for sub-arch menus
ARM: multi_v7_defconfig: re-enable SDHCI drivers
ARM: EXYNOS: Fix compilation warning
ARM: exynos: move sysram info to exynos.c
ARM: dts: Specify the NAND ECC scheme explicitly on Armada 385 DB board
ARM: dts: Specify the NAND ECC scheme explicitly on Armada 375 DB board
ARM: exynos: cleanup kconfig option display
misc: vexpress: fix error handling vexpress_syscfg_regmap_init()
ARM: Remove ARCH_HAS_CPUFREQ config option
ARM: integrator: fix section mismatch problem
ARM: mvebu: DT: fix OpenBlocks AX3-4 RAM size
ARM: samsung: make SAMSUNG_DMADEV optional
remoteproc: da8xx: don't select CMA on no-MMU
bus/arm-cci: add dependency on OF && CPU_V7
ARM: keystone requires ARM_PATCH_PHYS_VIRT
ARM: omap2: fix am43xx dependency on l2x0 cache
Alexander Shiyan [Thu, 8 May 2014 07:56:37 +0000 (11:56 +0400)]
w1: mxc_w1: Fix incorrect "presence" status
W1 reset_bus() should return zero if slave device is present.
This patch fix this issue.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Denis Carikli [Tue, 17 Jun 2014 13:34:51 +0000 (15:34 +0200)]
imx-drm: parallel-display: Fix DPMS default state.
If connector->dpms is left untouched, it defaults
to DRM_MODE_DPMS_ON (0).
As a result, drm_helper_connector_dpms will exit when
it will be asked to set the state to DRM_MODE_DPMS_ON,
because it is already set.
That issue prevented displays from turning on at boot.
Signed-off-by: Denis Carikli <denis@eukrea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Yi Zhang [Tue, 3 Jun 2014 13:03:08 +0000 (21:03 +0800)]
staging: android: timed_output: fix use after free of dev
tdev->dev has been freed in device_destroy(), it's not right to
use dev_set_drvdata() after that;
Signed-off-by: Yi Zhang <yizhang@marvell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stephen Boyd [Tue, 3 Jun 2014 18:30:03 +0000 (11:30 -0700)]
unicore32: Remove ARCH_HAS_CPUFREQ config option
This config exists entirely to hide the cpufreq menu from the
kernel configuration unless a platform has selected it. Nothing
is actually built if this config is 'Y' and it just leads to more
patches that add a select under a platform Kconfig so that some
other CPUfreq option can be chosen. Let's remove the option so
that we can always enable CPUfreq drivers on unicore32 platforms.
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Guan Xuetao [Mon, 26 May 2014 23:53:10 +0000 (07:53 +0800)]
UniCore32: Change git tree location information in MAINTAINERS
UniCore32 git repo has moved to github.
Branch 'unicore32' is used for prepared patches, and automatically merged to linux-next.
Branch 'unicore32-working' is used for development.
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Chen Gang [Tue, 27 May 2014 00:08:06 +0000 (08:08 +0800)]
arch: unicore32: ksyms: export '__cpuc_coherent_kern_range' to avoid compiling failure
flush_icache_range() is '__cpuc_coherent_kern_range' under unicore32,
and lkdtm.ko needs it. At present, '__cpuc_coherent_kern_range' is
still used by unicore32, so export it to avoid compiling failure.
The related error (with allmodconfig under unicore32):
ERROR: "__cpuc_coherent_kern_range" [drivers/misc/lkdtm.ko] undefined!
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Tue, 27 May 2014 00:04:24 +0000 (08:04 +0800)]
arch: unicore32: ksyms: export 'pm_power_off' to avoid compiling failure.
Two driver modules need 'pm_power_off', so export it.
The related error (with allmodconfig under unicore32):
MODPOST 4039 modules
ERROR: "pm_power_off" [drivers/mfd/retu-mfd.ko] undefined!
ERROR: "pm_power_off" [drivers/char/ipmi/ipmi_poweroff.ko] undefined!
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Tue, 27 May 2014 00:03:19 +0000 (08:03 +0800)]
arch: unicore32: ksyms: export additional find_first_*() to avoid compiling failure
Some modules need find_first_bit() and find_first_zero_bit(), so export
them.
The related error (with allmodconfig under unicore32):
MODPOST 4039 modules
ERROR: "find_first_bit" [sound/soc/codecs/snd-soc-uda1380.ko] undefined!
ERROR: "find_first_zero_bit" [net/sctp/sctp.ko] undefined!
...
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Tue, 15 Apr 2014 01:21:30 +0000 (09:21 +0800)]
arch:unicore32:mm: add devmem_is_allowed() to support STRICT_DEVMEM
unicore32 supports STRICT_DEVMEM, so it needs devmem_is_allowed(), like
some of other architectures have done (e.g. arm, powerpc, x86 ...).
The related error with allmodconfig:
CC drivers/char/mem.o
drivers/char/mem.c: In function â\80\98range_is_allowedâ\80\99:
drivers/char/mem.c:69: error: implicit declaration of function â\80\98devmem_is_allowedâ\80\99
make[2]: *** [drivers/char/mem.o] Error 1
make[1]: *** [drivers/char] Error 2
make: *** [drivers] Error 2
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Tue, 15 Apr 2014 01:49:48 +0000 (09:49 +0800)]
unicore32: include: asm: add missing ')' for PAGE_* macros in pgtable.h
Missing related ')', the related compiling error:
CC [M] drivers/gpu/drm/udl/udl_fb.o
drivers/gpu/drm/udl/udl_fb.c: In function ‘udl_fb_mmap’:
drivers/gpu/drm/udl/udl_fb.c:273: error: expected ‘)’ before ‘return’
drivers/gpu/drm/udl/udl_fb.c:281: error: expected expression before ‘}’ token
make[4]: *** [drivers/gpu/drm/udl/udl_fb.o] Error 1
make[3]: *** [drivers/gpu/drm/udl] Error 2
make[2]: *** [drivers/gpu/drm] Error 2
make[1]: *** [drivers/gpu] Error 2
make: *** [drivers] Error 2
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Wed, 21 May 2014 23:08:23 +0000 (07:08 +0800)]
arch/unicore32/kernel/setup.c: add generic 'screen_info' to avoid compiling failure
Add generic 'screen_info' just like another architectures have done
(e.g. tile, sh, score, ia64, hexagon, and cris).
The related error (with allmodconfig under unicore32):
LD init/built-in.o
drivers/built-in.o: In function `vgacon_save_screen':
powercap_sys.c:(.text+0x21788): undefined reference to `screen_info'
drivers/built-in.o: In function `vgacon_resize':
powercap_sys.c:(.text+0x21b54): undefined reference to `screen_info'
drivers/built-in.o: In function `vgacon_switch':
powercap_sys.c:(.text+0x21cb4): undefined reference to `screen_info'
drivers/built-in.o: In function `vgacon_init':
powercap_sys.c:(.text+0x2296c): undefined reference to `screen_info'
drivers/built-in.o: In function `vgacon_startup':
powercap_sys.c:(.text+0x22e80): undefined reference to `screen_info'
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Fri, 9 May 2014 01:19:39 +0000 (09:19 +0800)]
drivers: scsi: mvsas: fix compiling issue by adding 'MVS_' for "enum pci_interrupt_cause"
The direct cause is IRQ_SPI is already defined as a macro in unicore32
architecture (also, blackfin and mips architectures define it). The
related error (unicore32 with allmodconfig)
CC [M] drivers/scsi/mvsas/mv_94xx.o
In file included from drivers/scsi/mvsas/mv_94xx.c:27:
drivers/scsi/mvsas/mv_94xx.h:176: error: expected identifier before numeric constant
And IRQ_SAS_A and IRQ_SAS_B are used as 'u32' (although "enum
pci_interrupt_cause" is not used directly, now).
All together, need add 'MVS_' for "enum pci_interrupt_cause".
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Wed, 21 May 2014 01:37:08 +0000 (09:37 +0800)]
arch: unicore32: kernel: ksyms: remove 'bswapsi2' and 'muldi3' to avoid compiling failure
After check the code, 'bswapsi2' and 'muldi3' are useless for
unicore32, so can remove them to avoid compiling failure.
The related error (with allmodconfig under unicore32):
LD init/built-in.o
arch/unicore32/kernel/built-in.o:(___ksymtab+__muldi3+0x0): undefined reference to `__muldi3'
arch/unicore32/kernel/built-in.o:(___ksymtab+__bswapsi2+0x0): undefined reference to `__bswapsi2'
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Wed, 21 May 2014 00:57:53 +0000 (08:57 +0800)]
arch/unicore32/kernel/ksyms.c: remove 2 export symbols to avoid compiling failure
'csum_partial' and 'csum_partial_copy_from_user' have already been
exported in "lib/", so need not export them again, or it will cause
compiling error.
The related error (with allmodconfig under unicore32):
LD vmlinux.o
lib/built-in.o:(___ksymtab+csum_partial+0x0): multiple definition of `__ksymtab_csum_partial'
arch/unicore32/kernel/built-in.o:(___ksymtab+csum_partial+0x0): first defined here
lib/built-in.o:(___ksymtab+csum_partial_copy_from_user+0x0): multiple definition of `__ksymtab_csum_partial_copy_from_user'
arch/unicore32/kernel/built-in.o:(___ksymtab+csum_partial_copy_from_user+0x0): first defined here
make: *** [vmlinux] Error 1
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Sat, 3 May 2014 05:09:02 +0000 (13:09 +0800)]
drivers/rtc/rtc-puv3.c: remove "&dev->" for typo issue MIME-Version: 1.0
It is only a typo issue, the related commit:
"
1fbc4c4 drivers/rtc/rtc-puv3.c: use dev_dbg() instead of pr_debug()"
The related error (for unicore32 with allmodconfig):
CC [M] drivers/rtc/rtc-puv3.o
drivers/rtc/rtc-puv3.c: In function 'puv3_rtc_setalarm':
drivers/rtc/rtc-puv3.c:143: error: 'struct device' has no member named 'dev'
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Sat, 3 May 2014 05:07:57 +0000 (13:07 +0800)]
drivers/rtc/rtc-puv3.c: use dev_dbg() instead of dev_debug() for typo issue
It is only a typo issue, the related commit:
"
1fbc4c4 drivers/rtc/rtc-puv3.c: use dev_dbg() instead of pr_debug()"
The related error (unicore32 with allmodconfig):
CC [M] drivers/rtc/rtc-puv3.o
drivers/rtc/rtc-puv3.c: In function 'puv3_rtc_setpie':
drivers/rtc/rtc-puv3.c:74: error: implicit declaration of function 'dev_debug'
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Sat, 3 May 2014 01:06:28 +0000 (09:06 +0800)]
arch/unicore32/include/asm/io.h: add readl_relaxed() generic definition
Need generic definition for readl_relaxed(), like other architectures
have done. Or can not pass compiling with allmodconfig, the related
error:
CC [M] drivers/message/fusion/mptbase.o
drivers/message/fusion/mptbase.c: In function 'mpt_send_handshake_request':
drivers/message/fusion/mptbase.c:1224: error: implicit declaration of function 'readl_relaxed'
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Mon, 24 Mar 2014 12:54:11 +0000 (20:54 +0800)]
arch/unicore32/include/asm/ptrace.h: add generic definition for profile_pc()
Add generic definition just like another architectures have done, or
can not pass compiling with allmodconfig, the related error:
CC kernel/profile.o
kernel/profile.c: In function 'profile_tick':
kernel/profile.c:419: error: implicit declaration of function 'profile_pc'
make[1]: *** [kernel/profile.o] Error 1
make: *** [kernel] Error 2
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Mon, 24 Mar 2014 12:17:44 +0000 (20:17 +0800)]
arch/unicore32/mm/alignment.c: include "asm/pgtable.h" to avoid compiling error
Need include "asm/pgtable.h" to include "asm-generic/pgtable-nopmd.h",
so can let 'pmd_t' defined. The related error with allmodconfig:
CC arch/unicore32/mm/alignment.o
In file included from arch/unicore32/mm/alignment.c:24:
arch/unicore32/include/asm/tlbflush.h:135: error: expected .). before .*. token
arch/unicore32/include/asm/tlbflush.h:154: error: expected .). before .*. token
In file included from arch/unicore32/mm/alignment.c:27:
arch/unicore32/mm/mm.h:15: error: expected .=., .,., .;., .sm. or ._attribute__. before .*. token
arch/unicore32/mm/mm.h:20: error: expected .=., .,., .;., .sm. or ._attribute__. before .*. token
arch/unicore32/mm/mm.h:25: error: expected .=., .,., .;., .sm. or ._attribute__. before .*. token
make[1]: *** [arch/unicore32/mm/alignment.o] Error 1
make: *** [arch/unicore32/mm] Error 2
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Fri, 14 Mar 2014 01:19:39 +0000 (09:19 +0800)]
arch/unicore32/kernel/clock.c: add readl() and writel() for 'PM_' macros
Add readl() and writel() for 'PM_' macros, just like another areas have
done within unicored32, or will cause compiling issue.
The related error (allmodconfig for unicored32):
CC arch/unicore32/kernel/clock.o
arch/unicore32/kernel/clock.c: In function 'clk_set_rate':
arch/unicore32/kernel/clock.c:182: warning: initialization makes integer from pointer without a cast
arch/unicore32/kernel/clock.c:204: error: lvalue required as left operand of assignment
arch/unicore32/kernel/clock.c:206: error: lvalue required as left operand of assignment
arch/unicore32/kernel/clock.c:207: error: invalid operands to binary & (have 'void *' and 'long unsigned int')
make[1]: *** [arch/unicore32/kernel/clock.o] Error 1
make: *** [arch/unicore32/kernel] Error 2
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Fri, 14 Mar 2014 00:49:27 +0000 (08:49 +0800)]
arch/unicore32/kernel/module.c: use __vmalloc_node_range() instead of __vmalloc_area()
__vmalloc_area() has already been removed from upstream kernel, need
use __vmalloc_node_range() instead of.
The related commit: "
d0a2126 mm: unify module_alloc code for vmalloc".
The related error (allmodconfig for unicore32):
CC arch/unicore32/kernel/module.o
arch/unicore32/kernel/module.c: In function 'module_alloc' :
arch/unicore32/kernel/module.c:34: error: implicit declaration of function '__vmalloc_area'
arch/unicore32/kernel/module.c:34: warning: return makes pointer from integer without a cast
make[1]: *** [arch/unicore32/kernel/module.o] Error 1
make: *** [arch/unicore32/kernel] Error 2
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Chen Gang [Thu, 13 Mar 2014 13:27:12 +0000 (21:27 +0800)]
arch/unicore32/kernel/ksyms.c: remove several undefined exported symbols
For 'csum_partial_copy_nocheck()', it has default definition in
'asm-generic'.
For '__raw_reads?()' and '__raw_writes?()' are used by the drivers
which no relationship with allmodconfig for unicode32, the related
modules are:
drivers/mmc/host/omap.c
drivers/mtd/nand/atmel_nand.c
drivers/mtd/nand/pxa3xx_nand.c
drivers/usb/gadget/at91_udc.c
Others are only within some architectures (not kernel wide).
The related error with allmodconfig for unicode32:
CC arch/unicore32/kernel/ksyms.o
arch/unicore32/kernel/ksyms.c:29: error: ._backtrace. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:29: error: type defaults to .nt. in declaration of ._backtrace.
arch/unicore32/kernel/ksyms.c:38: error: .sum_partial_copy_nocheck. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:38: error: type defaults to .nt. in declaration of .sum_partial_copy_nocheck.
arch/unicore32/kernel/ksyms.c:39: error: ._csum_ipv6_magic. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:39: error: type defaults to .nt. in declaration of ._csum_ipv6_magic.
arch/unicore32/kernel/ksyms.c:43: error: ._raw_readsb. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:43: error: type defaults to .nt. in declaration of ._raw_readsb.
arch/unicore32/kernel/ksyms.c:46: error: ._raw_readsw. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:46: error: type defaults to .nt. in declaration of ._raw_readsw.
arch/unicore32/kernel/ksyms.c:49: error: ._raw_readsl. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:49: error: type defaults to .nt. in declaration of ._raw_readsl.
arch/unicore32/kernel/ksyms.c:52: error: ._raw_writesb. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:52: error: type defaults to .nt. in declaration of ._raw_writesb.
arch/unicore32/kernel/ksyms.c:55: error: ._raw_writesw. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:55: error: type defaults to .nt. in declaration of ._raw_writesw.
arch/unicore32/kernel/ksyms.c:58: error: ._raw_writesl. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:58: error: type defaults to .nt. in declaration of ._raw_writesl.
arch/unicore32/kernel/ksyms.c:79: error: ._get_user_1. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:79: error: type defaults to .nt. in declaration of ._get_user_1.
arch/unicore32/kernel/ksyms.c:80: error: ._get_user_2. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:80: error: type defaults to .nt. in declaration of ._get_user_2.
arch/unicore32/kernel/ksyms.c:81: error: ._get_user_4. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:81: error: type defaults to .nt. in declaration of ._get_user_4.
arch/unicore32/kernel/ksyms.c:83: error: ._put_user_1. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:83: error: type defaults to .nt. in declaration of ._put_user_1.
arch/unicore32/kernel/ksyms.c:84: error: ._put_user_2. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:84: error: type defaults to .nt. in declaration of ._put_user_2.
arch/unicore32/kernel/ksyms.c:85: error: ._put_user_4. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:85: error: type defaults to .nt. in declaration of ._put_user_4.
arch/unicore32/kernel/ksyms.c:86: error: ._put_user_8. undeclared here (not in a function)
arch/unicore32/kernel/ksyms.c:86: error: type defaults to .nt. in declaration of ._put_user_8.
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
Miao Xie [Thu, 19 Jun 2014 02:42:55 +0000 (10:42 +0800)]
Btrfs: fix wrong error handle when the device is missing or is not writeable
The original bio might be submitted, so we shoud increase bi_remaining to
account for it when we deal with the error that the device is missing or
is not writeable, or we would skip the endio handle.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Miao Xie [Thu, 19 Jun 2014 02:42:54 +0000 (10:42 +0800)]
Btrfs: fix deadlock when mounting a degraded fs
The deadlock happened when we mount degraded filesystem, the reproduced
steps are following:
# mkfs.btrfs -f -m raid1 -d raid1 <dev0> <dev1>
# echo 1 > /sys/block/`basename <dev0>`/device/delete
# mount -o degraded <dev1> <mnt>
The reason was that the counter -- bi_remaining was wrong. If the missing
or unwriteable device was the last device in the mapping array, we would
not submit the original bio, so we shouldn't increase bi_remaining of it
in btrfs_end_bio(), or we would skip the final endio handle.
Fix this problem by adding a flag into btrfs bio structure. If we submit
the original bio, we will set the flag, and we increase bi_remaining counter,
or we don't.
Though there is another way to fix it -- decrease bi_remaining counter of the
original bio when we make sure the original bio is not submitted, this method
need add more check and is easy to make mistake.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
Miao Xie [Thu, 19 Jun 2014 02:42:53 +0000 (10:42 +0800)]
Btrfs: use bio_endio_nodec instead of open code
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Wang Shilong [Thu, 19 Jun 2014 02:42:52 +0000 (10:42 +0800)]
Btrfs: fix NULL pointer crash when running balance and scrub concurrently
While running balance, scrub, fsstress concurrently we hit the
following kernel crash:
[56561.448845] BTRFS info (device sde): relocating block group
11005853696 flags 132
[56561.524077] BUG: unable to handle kernel NULL pointer dereference at
0000000000000078
[56561.524237] IP: [<
ffffffffa038956d>] scrub_chunk.isra.12+0xdd/0x130 [btrfs]
[56561.524297] PGD
9be28067 PUD
7f3dd067 PMD 0
[56561.524325] Oops: 0000 [#1] SMP
[....]
[56561.527237] Call Trace:
[56561.527309] [<
ffffffffa038980e>] scrub_enumerate_chunks+0x24e/0x490 [btrfs]
[56561.527392] [<
ffffffff810abe00>] ? abort_exclusive_wait+0x50/0xb0
[56561.527476] [<
ffffffffa038add4>] btrfs_scrub_dev+0x1a4/0x530 [btrfs]
[56561.527561] [<
ffffffffa0368107>] btrfs_ioctl+0x13f7/0x2a90 [btrfs]
[56561.527639] [<
ffffffff811c82f0>] do_vfs_ioctl+0x2e0/0x4c0
[56561.527712] [<
ffffffff8109c384>] ? vtime_account_user+0x54/0x60
[56561.527788] [<
ffffffff810f768c>] ? __audit_syscall_entry+0x9c/0xf0
[56561.527870] [<
ffffffff811c8551>] SyS_ioctl+0x81/0xa0
[56561.527941] [<
ffffffff815707f7>] tracesys+0xdd/0xe2
[...]
[56561.528304] RIP [<
ffffffffa038956d>] scrub_chunk.isra.12+0xdd/0x130 [btrfs]
[56561.528395] RSP <
ffff88004c0f5be8>
[56561.528454] CR2:
0000000000000078
This is because in btrfs_relocate_chunk(), we will free @bdev directly while
scrub may still hold extent mapping, and may access freed memory.
Fix this problem by wrapping freeing @bdev work into free_extent_map() which
is based on reference count.
Reported-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Qu Wenruo [Thu, 19 Jun 2014 02:42:51 +0000 (10:42 +0800)]
btrfs: Skip scrubbing removed chunks to avoid -ENOENT.
When run scrub with balance, sometimes -ENOENT will be returned, since
in scrub_enumerate_chunks() will search dev_extent in *COMMIT_ROOT*, but
btrfs_lookup_block_group() will search block group in *MEMORY*, so if a
chunk is removed but not committed, -ENOENT will be returned.
However, there is no need to stop scrubbing since other chunks may be
scrubbed without problem.
So this patch changes the behavior to skip removed chunks and continue
to scrub the rest.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Miao Xie [Thu, 19 Jun 2014 02:42:50 +0000 (10:42 +0800)]
Btrfs: fix broken free space cache after the system crashed
When we mounted the filesystem after the crash, we got the following
message:
BTRFS error (device xxx): block group xxxx has wrong amount of free space
BTRFS error (device xxx): failed to load free space cache for block group xxx
It is because we didn't update the metadata of the allocated space (in extent
tree) until the file data was written into the disk. During this time, there was
no information about the allocated spaces in either the extent tree nor the
free space cache. when we wrote out the free space cache at this time (commit
transaction), those spaces were lost. In fact, only the free space that is
used to store the file data had this problem, the others didn't because
the metadata of them is updated in the same transaction context.
There are many methods which can fix the above problem
- track the allocated space, and write it out when we write out the free
space cache
- account the size of the allocated space that is used to store the file
data, if the size is not zero, don't write out the free space cache.
The first one is complex and may make the performance drop down.
This patch chose the second method, we use a per-block-group variant to
account the size of that allocated space. Besides that, we also introduce
a per-block-group read-write semaphore to avoid the race between
the allocation and the free space cache write out.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Miao Xie [Thu, 19 Jun 2014 02:42:49 +0000 (10:42 +0800)]
Btrfs: make free space cache write out functions more readable
This patch makes the free space cache write out functions more readable,
and beisdes that, it also reduces the stack space that the function --
__btrfs_write_out_cache uses from 194bytes to 144bytes.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Filipe Manana [Mon, 16 Jun 2014 12:14:25 +0000 (13:14 +0100)]
Btrfs: remove unused wait queue in struct extent_buffer
The lock_wq wait queue is not used anywhere, therefore just remove it.
On a x86_64 system, this reduced sizeof(struct extent_buffer) from 320
bytes down to 296 bytes, which means a 4Kb page can now be used for
13 extent buffers instead of 12.
Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Chris Mason <clm@fb.com>
Chris Mason [Thu, 19 Jun 2014 21:16:52 +0000 (14:16 -0700)]
Btrfs: fix deadlocks with trylock on tree nodes
The Btrfs tree trylock function is poorly named. It always takes
the spinlock and backs off if the blocking lock is held. This
can lead to surprising lockups because people expect it to really be a
trylock.
This commit makes it a pure trylock, both for the spinlock and the
blocking lock. It also reworks the nested lock handling slightly to
avoid taking the read lock while a spinning write lock might be held.
Signed-off-by: Chris Mason <clm@fb.com>
Rob Herring [Thu, 12 Jun 2014 17:52:44 +0000 (12:52 -0500)]
tty/serial: fix 8250 early console option passing to regular console
In the conversion to generic early console, the passing of options from
the early 8250 console to the regular ttyS console was broken. This
resulted in the baud rate changing when switching consoles during boot.
This feature allows specifying a single console option on the kernel
command line rather than both an early console and regular serial tty
console. It would be nice to generalize this feature. However, it only
works if the correct baud rate can be probed early which is not the
case on many platforms which have non-standard UART clock rates. So for
now, this is left as an 8250 specific feature.
Reported-and-tested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Mon, 16 Jun 2014 12:10:42 +0000 (08:10 -0400)]
tty: Correct INPCK handling
If INPCK is not set, input parity detection should be disabled. This means
parity errors should not be received from the tty driver, and the data
received should be treated normally.
SUS v3, 11.2.2, General Terminal Interface - Input Modes, states:
"If INPCK is set, input parity checking shall be enabled. If INPCK is
not set, input parity checking shall be disabled, allowing output parity
generation without input parity errors. Note that whether input parity
checking is enabled or disabled is independent of whether parity detection
is enabled or disabled (see Control Modes). If parity detection is enabled
but input parity checking is disabled, the hardware to which the terminal
is connected shall recognize the parity bit, but the terminal special file
shall not check whether or not this bit is correctly set."
Ignore parity errors reported by the tty driver when INPCK is not set, and
handle the received data normally.
Fixes: Bugzilla #71681, 'Improvement of n_tty_receive_parity_error from n_tty.c'
Reported-by: Ivan <athlon_@mail.ru>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Mon, 16 Jun 2014 12:10:41 +0000 (08:10 -0400)]
serial: Fix IGNBRK handling
If IGNBRK is set without either BRKINT or PARMRK set, some uart
drivers send a 0x00 byte for BREAK without the TTYBREAK flag to the
line discipline, when it should send either nothing or the TTYBREAK flag
set. This happens because the read_status_mask masks out the BI
condition, which uart_insert_char() then interprets as a normal 0x00 byte.
SUS v3 is clear regarding the meaning of IGNBRK; Section 11.2.2, General
Terminal Interface - Input Modes, states:
"If IGNBRK is set, a break condition detected on input shall be ignored;
that is, not put on the input queue and therefore not read by any
process."
Fix read_status_mask to include the BI bit if IGNBRK is set; the
lsr status retains the BI bit if a BREAK is recv'd, which is
subsequently ignored in uart_insert_char() when masked with the
ignore_status_mask.
Affected drivers:
8250 - all
serial_txx9
mfd
amba-pl010
amba-pl011
atmel_serial
bfin_uart
dz
ip22zilog
max310x
mxs-auart
netx-serial
pnx8xxx_uart
pxa
sb1250-duart
sccnxp
serial_ks8695
sirfsoc_uart
st-asc
vr41xx_siu
zs
sunzilog
fsl_lpuart
sunsab
ucc_uart
bcm63xx_uart
sunsu
efm32-uart
pmac_zilog
mpsc
msm_serial
m32r_sio
Unaffected drivers:
omap-serial
rp2
sa1100
imx
icom
Annotated for fixes:
altera_uart
mcf
Drivers without break detection:
21285
xilinx-uartps
altera_jtaguart
apbuart
arc-uart
clps711x
max3100
uartlite
msm_serial_hs
nwpserial
lantiq
vt8500_serial
Unknown:
samsung
mpc52xx_uart
bfin_sport_uart
cpm_uart/core
Fixes: Bugzilla #71651, '8250_core.c incorrectly handles IGNBRK flag'
Reported-by: Ivan <athlon_@mail.ru>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Davidlohr Bueso [Mon, 16 Jun 2014 18:14:26 +0000 (11:14 -0700)]
perf bench sched-messaging: Drop barf()
Instead of reinventing the wheel, we can use err(2) when dealing with
fatal errors. Exit code is now always EXIT_FAILURE (1).
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1402942467-10671-9-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Davidlohr Bueso [Mon, 16 Jun 2014 18:14:25 +0000 (11:14 -0700)]
perf bench mem: The -o and -n options are mutually exclusive
-o, --only-prefault Show only the result with page faults before mem*
-n, --no-prefault Show only the result without page faults before mem*
Makes no sense to call together. Applies to both memset and memcpy.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1402942467-10671-8-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Davidlohr Bueso [Mon, 16 Jun 2014 18:14:23 +0000 (11:14 -0700)]
perf bench futex: Use global --repeat option
This option is available through perf-bench, use it instead and free the
local option.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1402942467-10671-6-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Davidlohr Bueso [Mon, 16 Jun 2014 18:14:19 +0000 (11:14 -0700)]
perf bench: Add --repeat option
There are a number of benchmarks that do single runs and as a result
does not really help users gain a general idea of how the workload
performs. So the user must either manually do multiple runs or just use
single bogus results.
This option will enable users to specify the amount of runs (arbitrarily
defaulted to 10, to use the existing benchmarks default) through the
'--repeat' option. Add it to perf-bench instead of implementing it
always in each specific benchmark.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1402942467-10671-2-git-send-email-davidlohr@hp.com
[ Kept the existing default of 10, changing it to something else should
be done on separate patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Davidlohr Bueso [Mon, 16 Jun 2014 18:14:22 +0000 (11:14 -0700)]
perf bench sched-messaging: Plug memleak
Explicitly free the thread array ('pth_tab').
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1402942467-10671-5-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Thu, 19 Jun 2014 11:41:14 +0000 (13:41 +0200)]
perf ui browser: Fix scrollbar refresh row index
The ui_browser__gotorc function needs offset from 'y' member, so the row
index has to begin with 0, which happens by accident in current code,
because we display only one header line.
The bug shows when we want to display more than 1 header lines like
columns headers in following patches.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1403178076-14072-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Jiri Olsa [Thu, 19 Jun 2014 11:41:13 +0000 (13:41 +0200)]
perf hists browser: Remove ev_name argument from perf_evsel__hists_browse
Removing ev_name argument from perf_evsel__hists_browse function,
because it's not needed. We can get the name out of the 'struct
perf_evsel' which is passed as argument as well.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1403178076-14072-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 17 Jun 2014 17:29:24 +0000 (14:29 -0300)]
perf trace: Cache the is_exit syscall test
No need to use two strcmp calls per syscall entry, do it just once, when
reading the per syscall info.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-lymtxhz0mg3adyt5e2pssn8f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Mon, 16 Jun 2014 20:21:59 +0000 (17:21 -0300)]
perf trace: Remove needless reassignments
The thread->priv value is already obtained a few lines earlier from the
thread__trace() call. Leftovers from before thread__trace().
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-96laa634vzfwlwxurevo40wp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Arnaldo Carvalho de Melo [Tue, 10 Jun 2014 20:18:54 +0000 (17:18 -0300)]
perf evlist: Add suggestion of how to set perf_event_paranoid sysctl
Minor hint to speed up problem resolution and get 'trace' working for
non root users.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-abdqi8km4fj9osrn70q2zj9v@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
projects / firefly-linux-kernel-4.4.55.git / log