Micha Kalfon [Tue, 13 Jan 2015 09:47:20 +0000 (11:47 +0200)]
prctl: fix misplaced PR_SET_TIMERSLACK_PID case
The case clause for the PR_SET_TIMERSLACK_PID option was placed inside
the an internal switch statement for PR_MCE_KILL (see commits
37a591d4
and
8ae872f1) . This commit moves it to the right place.
Change-Id: I63251669d7e2f2aa843d1b0900e7df61518c3dea
Signed-off-by: Micha Kalfon <micha@cellrox.com>
Acked-by: Oren Laadan <orenl@cellrox.com>
Ruchi Kandoi [Sat, 14 Jun 2014 00:03:01 +0000 (17:03 -0700)]
prctl: adds the capable(CAP_SYS_NICE) check to PR_SET_TIMERSLACK_PID.
Adds a capable() check to make sure that arbitary apps do not change the
timer slack for other apps.
Bug:
15000427
Change-Id: I558a2551a0e3579c7f7e7aae54b28aa9d982b209
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Ruchi Kandoi [Fri, 18 Apr 2014 21:07:28 +0000 (14:07 -0700)]
prctl: adds PR_SET_TIMERSLACK_PID for setting timer slack of an arbitrary thread.
Second argument is similar to PR_SET_TIMERSLACK, if non-zero then the
slack is set to that value otherwise sets it to the default for the thread.
Takes PID of the thread as the third argument.
This allows power/performance management software to set timer slack for
other threads according to its policy for the thread (such as when the
thread is designated foreground vs. background activity)
Change-Id: I744d451ff4e60dae69f38f53948ff36c51c14a3f
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Martijn Coenen [Thu, 14 Jan 2016 13:33:52 +0000 (14:33 +0100)]
UPSTREAM: memcg: Only free spare array when readers are done
A spare array holding mem cgroup threshold events is kept around
to make sure we can always safely deregister an event and have an
array to store the new set of events in.
In the scenario where we're going from 1 to 0 registered events, the
pointer to the primary array containing 1 event is copied to the spare
slot, and then the spare slot is freed because no events are left.
However, it is freed before calling synchronize_rcu(), which means
readers may still be accessing threshold->primary after it is freed.
Fixed by only freeing after synchronize_rcu().
Signed-off-by: Martijn Coenen <maco@google.com>
Amit Pundir [Mon, 21 Dec 2015 10:31:10 +0000 (16:01 +0530)]
cgroup: refactor allow_attach handler for 4.4
Refactor *allow_attach() handler to align it with the changes
from mainline commit
1f7dd3e5a6e4 "cgroup: fix handling of
multi-destination migration from subtree_control enabling".
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Dmitry Shmidt [Wed, 28 Oct 2015 01:18:04 +0000 (18:18 -0700)]
cgroup: fix cgroup_taskset_for_each call in allow_attach() for 4.1
Change-Id: I05013f6e76c30b0ece3671f9f2b4bbdc626cd35c
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Daniel Rosenberg [Mon, 12 Jan 2015 22:21:52 +0000 (14:21 -0800)]
include: linux: cgroup: Fix compiler warning
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Christian Poetzsch [Wed, 3 Jun 2015 11:07:33 +0000 (12:07 +0100)]
Fix generic cgroup subsystem permission checks
In
53b5e2f generic cgroup subsystem permission checks have been added.
When this is been done within procs_write an empty taskset is added to
the tasks css set. When a task later on migrates to a new group we see a
dmesg warning cause the mg_node isn't empty (cgroup.c:2086). Cause this
happens all the time this spams dmesg.
I am not really familiar with this code, but it looks to me like adding
the taskset is just a temporary action in this context. Therefore this
taskset should be removed after the actual check. This is what this fix
does.
This problem was seen and the fix tested on x86 using l-mr1 and master.
Change-Id: I9894d39e8b5692ef65149002b07e65a84a33ffea
Signed-off-by: Christian Poetzsch <christian.potzsch@imgtec.com>
Rom Lemarchand [Wed, 27 May 2015 00:00:44 +0000 (17:00 -0700)]
cgroup: Fix issues in allow_attach callback
- Return -EINVAL when cgroups support isn't enabled
- Add allow_attach callback in CPU cgroups
Change-Id: Id3360b4a39919524fc4b6fcbd44fa2050009f000
Signed-off-by: Rom Lemarchand <romlem@android.com>
Amit Pundir [Wed, 1 Apr 2015 08:28:39 +0000 (13:58 +0530)]
cgroup: memcg: pass correct argument to subsys_cgroup_allow_attach
Pass correct argument to subsys_cgroup_allow_attach(), which
expects 'struct cgroup_subsys_state *' argument but we pass
'struct cgroup *' instead which doesn't seem right.
This fixes following 'incompatible pointer type' compiler warning:
----------
CC mm/memcontrol.o
mm/memcontrol.c: In function ‘mem_cgroup_allow_attach’:
mm/memcontrol.c:5052:2: warning: passing argument 1 of ‘subsys_cgroup_allow_attach’ from incompatible pointer type [enabled by default]
In file included from include/linux/memcontrol.h:22:0,
from mm/memcontrol.c:29:
include/linux/cgroup.h:953:5: note: expected ‘struct cgroup_subsys_state *’ but argument is of type ‘struct cgroup *’
----------
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Colin Cross [Wed, 13 Jul 2011 02:53:24 +0000 (19:53 -0700)]
cgroup: Add generic cgroup subsystem permission checks
Rather than using explicit euid == 0 checks when trying to move
tasks into a cgroup via CFS, move permission checks into each
specific cgroup subsystem. If a subsystem does not specify a
'allow_attach' handler, then we fall back to doing our checks
the old way.
Use the 'allow_attach' handler for the 'cpu' cgroup to allow
non-root processes to add arbitrary processes to a 'cpu' cgroup
if it has the CAP_SYS_NICE capability set.
This version of the patch adds a 'allow_attach' handler instead
of reusing the 'can_attach' handler. If the 'can_attach' handler
is reused, a new cgroup that implements 'can_attach' but not
the permission checks could end up with no permission checks
at all.
Change-Id: Icfa950aa9321d1ceba362061d32dc7dfa2c64f0c
Original-Author: San Mehat <san@google.com>
Signed-off-by: Colin Cross <ccross@android.com>
Rom Lemarchand [Fri, 7 Nov 2014 17:42:40 +0000 (09:42 -0800)]
memcg: add permission check
Use the 'allow_attach' handler for the 'mem' cgroup to allow
non-root processes to add arbitrary processes to a 'mem' cgroup
if it has the CAP_SYS_NICE capability set.
Bug:
18260435
Change-Id: If7d37bf90c1544024c4db53351adba6a64966250
Signed-off-by: Rom Lemarchand <romlem@android.com>
Rom Lemarchand [Fri, 7 Nov 2014 20:48:17 +0000 (12:48 -0800)]
cgroup: refactor allow_attach function into common code
move cpu_cgroup_allow_attach to a common subsys_cgroup_allow_attach.
This allows any process with CAP_SYS_NICE to move tasks across cgroups if
they use this function as their allow_attach handler.
Bug:
18260435
Change-Id: I6bb4933d07e889d0dc39e33b4e71320c34a2c90f
Signed-off-by: Rom Lemarchand <romlem@android.com>
Ruchi Kandoi [Wed, 5 Aug 2015 23:54:53 +0000 (16:54 -0700)]
wakeup_reason: use vsnprintf instead of snsprintf for vargs.
Bug:
22368519
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Amit Pundir [Mon, 13 Apr 2015 21:08:20 +0000 (02:38 +0530)]
power: wakeup_reason: fix suspend time reporting
Suspend time reporting Change-Id: I2cb9a9408a5fd12166aaec11b935a0fd6a408c63
(Power: Report suspend times from last_suspend_time), is broken on 3.16+
kernels because get_xtime_and_monotonic_and_sleep_offset() hrtimer helper
routine is removed from kernel timekeeping.
The replacement helper routines ktime_get_update_offsets_{tick,now}()
are private to core kernel timekeeping so we can't use them, hence using
ktime_get() and ktime_get_boottime() instead and sampling the time twice.
Idea is to use Monotonic boottime offset to calculate total time spent
in last suspend state and CLOCK_MONOTONIC to calculate time spent in
last suspend-resume process.
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Ruchi Kandoi [Wed, 8 Apr 2015 22:42:29 +0000 (15:42 -0700)]
wakeup: Add last wake up source logging for suspend abort reason.
There is a possibility that a wakeup source event is received after
the device prepares to suspend which might cause the suspend to abort.
This patch adds the functionality of reporting the last active wakeup
source which is currently not active but caused the suspend to abort reason
via the /sys/kernel/power/last_wakeup_reason file.
Change-Id: I1760d462f497b33e425f5565cb6cff5973932ec3
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
jinqian [Wed, 25 Mar 2015 23:18:44 +0000 (16:18 -0700)]
Power: Report suspend times from last_suspend_time
This node epxorts two values separated by space.
From left to right:
1. time spent in suspend/resume process
2. time spent sleep in suspend state
Change-Id: I2cb9a9408a5fd12166aaec11b935a0fd6a408c63
Dylan Reid [Tue, 3 Mar 2015 17:38:28 +0000 (09:38 -0800)]
power: Remove HAS_WAKELOCK config and document WAKELOCK
Remove the HAS_WAKELOCK config as it doesn't seem to have been used in
the 3.10 or 3.14 kernels.
Add some Documentation to CONFIG_WAKELOCK so that it is selectable and
can be disabled is desired.
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Lorenzo Colitti [Thu, 27 Nov 2014 06:12:10 +0000 (15:12 +0900)]
Make suspend abort reason logging depend on CONFIG_PM_SLEEP
This unbreaks the build on architectures such as um that do not
support CONFIG_PM_SLEEP.
Change-Id: Ia846ed0a7fca1d762ececad20748d23610e8544f
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Dmitry Shmidt [Fri, 31 Oct 2014 23:05:46 +0000 (16:05 -0700)]
power: Add check_wakeup_reason() to verify wakeup source irq
Wakeup reason is set before driver resume handlers are called.
It is cleared before driver suspend handlers are called, on
PM_SUSPEND_PREPARE.
Change-Id: I04218c9b0c115a7877e8029c73e6679ff82e0aa4
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Ruchi Kandoi [Wed, 29 Oct 2014 17:36:27 +0000 (10:36 -0700)]
power: Adds functionality to log the last suspend abort reason.
Extends the last_resume_reason to log suspend abort reason. The abort
reasons will have "Abort:" appended at the start to distinguish itself
from the resume reason.
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Change-Id: I3207f1844e3d87c706dfc298fb10e1c648814c5f
Ruchi Kandoi [Wed, 15 Oct 2014 00:43:21 +0000 (17:43 -0700)]
power: Avoids bogus error messages for the suspend aborts.
Avoids printing bogus error message "tasks refusing to freeze", in cases
where pending wakeup source caused the suspend abort.
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Change-Id: I913ad290f501b31cd536d039834c8d24c6f16928
Todd Poynor [Thu, 12 Dec 2013 23:59:09 +0000 (15:59 -0800)]
power: Add property CHARGE_COUNTER_EXT and 64-bit precision properties
Add POWER_SUPPLY_PROP_CHARGE_COUNTER_EXT that stores accumulated charge
in nAh units as a signed 64-bit value.
Add generic support for signed 64-bit property values.
Change-Id: I2bd34b1e95ffba24e7bfef81f398f22bd2aaf05e
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Ruchi Kandoi [Thu, 24 Apr 2014 21:31:57 +0000 (14:31 -0700)]
Power: Changes the permission to read only for sysfs file /sys/kernel/wakeup_reasons/last_resume_reason
Change-Id: I8ac568a7cb58c31decd379195de517ff3c6f9c65
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Greg Hackmann [Mon, 10 Mar 2014 21:21:30 +0000 (14:21 -0700)]
power: wakeup_reason: rename irq_count to irqcount
On x86, irq_count conflicts with a declaration in
arch/x86/include/asm/processor.h
Change-Id: I3e4fde0ff64ef59ff5ed2adc0ea3a644641ee0b7
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Ruchi Kandoi [Fri, 7 Mar 2014 20:54:30 +0000 (12:54 -0800)]
Power: Add guard condition for maximum wakeup reasons
Ensure the array for the wakeup reason IRQs does not overflow.
Change-Id: Iddc57a3aeb1888f39d4e7b004164611803a4d37c
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
(cherry picked from commit
b5ea40cdfcf38296535f931a7e5e7bf47b6fad7f)
Ruchi Kandoi [Fri, 21 Feb 2014 03:47:38 +0000 (19:47 -0800)]
POWER: fix compile warnings in log_wakeup_reason
Change I81addaf420f1338255c5d0638b0d244a99d777d1 introduced compile
warnings, fix these.
Change-Id: I05482a5335599ab96c0a088a7d175c8d4cf1cf69
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Ruchi Kandoi [Wed, 19 Feb 2014 23:30:47 +0000 (15:30 -0800)]
Power: add an API to log wakeup reasons
Add API log_wakeup_reason() and expose it to userspace via sysfs path
/sys/kernel/wakeup_reasons/last_resume_reason
Change-Id: I81addaf420f1338255c5d0638b0d244a99d777d1
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Todd Poynor [Wed, 30 May 2012 00:33:56 +0000 (17:33 -0700)]
PM / Suspend: Print wall time at suspend entry and exit
Change-Id: I92f252414c013b018b9a392eae1ee039aa0e89dc
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Benoit Goby [Thu, 13 Aug 2009 16:40:42 +0000 (09:40 -0700)]
drivers: power: Add watchdog timer to catch drivers which lockup during suspend.
Rather than hard-lock the kernel, dump the suspend thread stack and
BUG() when a driver takes too long to suspend. The timeout is set
to 12 seconds to be longer than the usbhid 10 second timeout.
Exclude from the watchdog the time spent waiting for children that
are resumed asynchronously and time every device, whether or not they
resumed synchronously.
Change-Id: Ifd211c06b104860c2fee6eecfe0d61774aa4508a
Original-author: San Mehat <san@google.com>
Signed-off-by: Benoit Goby <benoit@android.com>
Todd Poynor [Wed, 18 Jul 2012 23:28:50 +0000 (16:28 -0700)]
power: power_supply: add POWER_SUPPLY_PROP_CHARGE_ENABLED
Change-Id: I3e93b502452811cbfc4d904202b4f1d94edc143d
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Todd Poynor [Fri, 13 Jul 2012 20:30:04 +0000 (13:30 -0700)]
power: power_supply: add POWER_SUPPLY_PROP_USB_OTG
Change-Id: Idfc6ef2e37d62aad6f26cc8eafa53db642cd352b
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Todd Poynor [Fri, 13 Jul 2012 03:27:16 +0000 (20:27 -0700)]
power: power_supply: move POWER_SUPPLY_PROP_USB_HC to type 'int' order
Change-Id: I001af30ab5fe06dde5f368241f21b9e0864777a1
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Todd Poynor [Tue, 3 Jul 2012 22:41:20 +0000 (15:41 -0700)]
power_supply: Add custom property for USB High Current mode
For smb347.
Change-Id: I3323469072e1ee5085d61af8a89612b06b91f94a
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Colin Cross [Wed, 9 May 2012 23:09:50 +0000 (16:09 -0700)]
trace: power: add trace_clock_set_parent
Adds a new trace event to be called from clk_set_parent. Some
cpufreq drivers, including Tegra, reparent the cpu clock to a
slower clock while the main pll is relocking, tracing
clk_set_parent allows traces to show how for long the cpu is
running slower.
Uses a separate TRACE_EVENT instead of the clock event class to
allow the event to contain string names for the child and the
parent.
Signed-off-by: Colin Cross <ccross@android.com>
Amit Pundir [Thu, 1 Oct 2015 05:14:36 +0000 (10:44 +0530)]
misc seq_printf fixes for 4.4
Update seq_printf() usage in aosp patches to align
with changes from mainline commit
6798a8caaf64
"fs/seq_file: convert int seq_vprint/seq_printf/etc...
returns to void".
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Arve Hjønnevåg [Tue, 14 May 2013 03:34:22 +0000 (20:34 -0700)]
misc: uidstat: Remove use of obsolete create_proc_read_entry api
Signed-off-by: Arve Hjønnevåg <arve@android.com>
JP Abgrall [Thu, 30 May 2013 22:31:17 +0000 (15:31 -0700)]
misc: uidstat: avoid create_stat() race and blockage.
* create_stat() race would lead to:
[ 58.132324] proc_dir_entry 'uid_stat/10061' already registered
* blocking kmalloc reported by sbranden
tcp_read_sock()
uid_stat_tcp_rcv()
create_stat()
kmalloc(GFP_KERNEL)
Signed-off-by: JP Abgrall <jpa@google.com>
Ruchi Kandoi [Fri, 20 Nov 2015 00:07:19 +0000 (16:07 -0800)]
trace: cpufreq: Add tracing for min/max cpufreq
Change-Id: I73f6ec437c1f805437d9376abb6510d1364b07ec
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Arun Bharadwaj [Wed, 3 Jul 2013 17:35:02 +0000 (10:35 -0700)]
tracing/sched: Add trace events to track cpu hotplug.
Add ftrace event trace_sched_cpu_hotplug to track cpu
hot-add and hot-remove events.
This is useful in a variety of power, performance and
debug analysis scenarios.
Change-Id: I5d202c7a229ffacc3aafb7cf9afee0b0ee7b0931
Signed-off-by: Arun Bharadwaj <abharadw@codeaurora.org>
Dmitry Shmidt [Wed, 28 Oct 2015 17:45:04 +0000 (10:45 -0700)]
trace: fix compilation for 4.1
Change-Id: Id88b5d30847bc6d3cfe1d8cd00cbdc975c9712d1
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Ken Sumrall [Thu, 16 May 2013 03:13:13 +0000 (20:13 -0700)]
mmc: Add tracepoints of mmc block operations
Add tracepoints to record the start and end of each mmc block
operation. This includes read, write, erase, secure erase,
trim, secure trim1 and secure trim 2, discard and
sanitize commands.
Change-Id: Ic5d1cbdb9adb940d8b1a2a13c73970023575df50
Signed-off-by: Ken Sumrall <ksumrall@android.com>
Jamie Gennis [Fri, 19 Apr 2013 03:36:21 +0000 (20:36 -0700)]
trace/events: fix gpu event timestamp formatting
This change fixes the how the gpu_sched_switch timestamp field is formatted.
Signed-off-by: Jamie Gennis <jgennis@google.com>
Change-Id: I273234935254ed15772c9e561c9af20e480004ae
Jamie Gennis [Thu, 22 Nov 2012 04:14:09 +0000 (20:14 -0800)]
trace: add non-hierarchical function_graph option
Add the 'funcgraph-flat' option to the function_graph tracer to use the default
trace printing format rather than the hierarchical formatting normally used.
Change-Id: If2900bfb86e6f8f51379f56da4f6fabafa630909
Signed-off-by: Jamie Gennis <jgennis@google.com>
Jamie Gennis [Wed, 21 Nov 2012 23:04:25 +0000 (15:04 -0800)]
trace: Add an option to show tgids in trace output
The tgids are tracked along side the saved_cmdlines tracking, and can be
included in trace output by enabling the 'print-tgid' trace option. This is
useful when doing post-processing of the trace data, as it allows events to be
grouped by tgid.
Change-Id: I52ed04c3a8ca7fddbb868b792ce5d21ceb76250e
Signed-off-by: Jamie Gennis <jgennis@google.com>
Jamie Gennis [Fri, 22 Feb 2013 01:55:28 +0000 (17:55 -0800)]
trace/events: add gpu trace events
Change-Id: I0607b9c776acf61cb796b8572cf8cfb8b2dc1377
Signed-off-by: Jamie Gennis <jgennis@google.com>
Andrew Bresticker [Mon, 12 Oct 2015 20:31:45 +0000 (13:31 -0700)]
CHROMIUM: android: Unconditionally remove callbacks in sync_fence_free()
Using fence->status to determine whether or not there are callbacks
remaining on the sync_fence is racy since fence->status may have been
decremented to 0 on another CPU before fence_check_cb_func() has
completed. By unconditionally calling fence_remove_callback() for each
fence in the sync_fence, we guarantee that each callback has either
completed (since fence_remove_callback() grabs the fence lock) or been
removed.
BUG=chrome-os-partner:46382
TEST=Reboot cycle test on Smaug; no crashes seen.
Change-Id: I837180ef633aed3c5ae1e52e0d6ded838342b8fa
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/305331
Reviewed-by: Puneet Kumar <puneetster@chromium.org>
Dmitry Torokhov [Wed, 9 Sep 2015 00:30:52 +0000 (17:30 -0700)]
CHROMIUM: android: fix warning when releasing active sync point
Userspace can close the sync device while there are still active fence
points, in which case kernel produces the following warning:
[ 43.853176] ------------[ cut here ]------------
[ 43.857834] WARNING: CPU: 0 PID: 892 at /mnt/host/source/src/third_party/kernel/v3.18/drivers/staging/android/sync.c:439 android_fence_release+0x88/0x104()
[ 43.871741] CPU: 0 PID: 892 Comm: Binder_5 Tainted: G U
3.18.0-07661-g0550ce9 #1
[ 43.880176] Hardware name: Google Tegra210 Smaug Rev 1+ (DT)
[ 43.885834] Call trace:
[ 43.888294] [<
ffffffc000207464>] dump_backtrace+0x0/0x10c
[ 43.893697] [<
ffffffc000207580>] show_stack+0x10/0x1c
[ 43.898756] [<
ffffffc000ab1258>] dump_stack+0x74/0xb8
[ 43.903814] [<
ffffffc00021d414>] warn_slowpath_common+0x84/0xb0
[ 43.909736] [<
ffffffc00021d530>] warn_slowpath_null+0x14/0x20
[ 43.915482] [<
ffffffc00088aefc>] android_fence_release+0x84/0x104
[ 43.921582] [<
ffffffc000671cc4>] fence_release+0x104/0x134
[ 43.927066] [<
ffffffc00088b0cc>] sync_fence_free+0x74/0x9c
[ 43.932552] [<
ffffffc00088b128>] sync_fence_release+0x34/0x48
[ 43.938304] [<
ffffffc000317bbc>] __fput+0x100/0x1b8
[ 43.943185] [<
ffffffc000317cc8>] ____fput+0x8/0x14
[ 43.947982] [<
ffffffc000237f38>] task_work_run+0xb0/0xe4
[ 43.953297] [<
ffffffc000207074>] do_notify_resume+0x44/0x5c
[ 43.958867] ---[ end trace
5a2aa4027cc5d171 ]---
Let's fix it by introducing a new optional callback (disable_signaling)
to fence operations so that drivers can do proper clean ups when we
remove last callback for given fence.
BUG=chrome-os-partner:40303
TEST=Boot Smaug and observe that warning is gone.
Change-Id: I05c34dcf74438c28405438c7ead0706b1f810fff
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/303409
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Erik Gilling [Fri, 14 Sep 2012 21:36:34 +0000 (14:36 -0700)]
sync: add Documentation/sync.txt
Change-Id: Ic7f3a6d4622083be607b82ddd8d676609225bb8f
Signed-off-by: Erik Gilling <konkers@android.com>
Amit Pundir [Mon, 6 Jul 2015 19:39:40 +0000 (01:09 +0530)]
video: adf: build fixes for 4.1
Couple of ADF build fixes for v4.1
adf/adf_fops.c fix:
get_unused_fd() is obsolete, use get_unused_fd_flags(O_CLOEXEC)
instead to allocate a default file descriptor. This fix is a
followup of upstream commit
f938612dd97d "include/linux/file.h:
remove get_unused_fd() macro".
adf/adf_memblock.c fix:
Fix dma_buf_export() call. Based on mainline commit
d8fbe341beb6
"dma-buf: cleanup dma_buf_export() to make it easily extensible".
Otherwise we run into following build failures:
----------
CC drivers/video/adf/adf_fops.o
CC drivers/video/adf/adf_memblock.o
drivers/video/adf/adf_memblock.c: In function ‘adf_memblock_export’:
drivers/video/adf/adf_memblock.c:154:2: warning: passing argument 1 of ‘dma_buf_export’ from incompatible pointer type [enabled by default]
In file included from drivers/video/adf/adf_memblock.c:15:0:
include/linux/dma-buf.h:211:17: note: expected ‘const struct dma_buf_export_info *’ but argument is of type ‘struct adf_memblock_pdata *’
drivers/video/adf/adf_memblock.c:154:2: error: too many arguments to function ‘dma_buf_export’
In file included from drivers/video/adf/adf_memblock.c:15:0:
include/linux/dma-buf.h:211:17: note: declared here
make[3]: *** [drivers/video/adf/adf_memblock.o] Error 1
make[3]: *** Waiting for unfinished jobs....
drivers/video/adf/adf_fops.c: In function ‘adf_device_post_config’:
drivers/video/adf/adf_fops.c:228:2: error: implicit declaration of function ‘get_unused_fd’ [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[3]: *** [drivers/video/adf/adf_fops.o] Error 1
make[2]: *** [drivers/video/adf] Error 2
make[2]: *** Waiting for unfinished jobs....
----------
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Amit Pundir [Wed, 1 Apr 2015 11:14:44 +0000 (16:44 +0530)]
video: adf: fix memblock build failure
Pass 'NULL' as the 5th argument to dma_buf_export() to fix
the following build failure:
----------
CC drivers/video/adf/adf_memblock.o
drivers/video/adf/adf_memblock.c: In function ‘adf_memblock_export’:
drivers/video/adf/adf_memblock.c:154:60: error: macro "dma_buf_export" requires 5 arguments, but only 4 given
drivers/video/adf/adf_memblock.c:154:8: error: ‘dma_buf_export’ undeclared (first use in this function)
drivers/video/adf/adf_memblock.c:154:8: note: each undeclared identifier is reported only once for each function it appears in
make[3]: *** [drivers/video/adf/adf_memblock.o] Error 1
make[2]: *** [drivers/video/adf] Error 2
----------
5th argument to dma_buf_export() is a pointer to 'reservation-object'
and a new 'reservation-object' is allocated in case 'NULL' is passed.
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Greg Hackmann [Tue, 16 Dec 2014 23:59:51 +0000 (15:59 -0800)]
video: adf: fix wrong bitops in adf_modeinfo_to_fb_videomode()
Change-Id: I1296153e382c0b66b713a0e7d09665ed5961f13d
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Jonathan Hamilton [Thu, 17 Jul 2014 22:54:44 +0000 (15:54 -0700)]
video: adf: Cleanup sw_sync timeline at adf_device_destroy
If a sw_sync timeline was created by ADF (for drivers that do not implement
ops->complete_fence) we should clean it up when the ADF device is
destroyed.
Change-Id: Idd90180fcae56a87111f7d12bdd80190756a6b80
Signed-off-by: Jonathan Hamilton <jonathan.hamilton@imgtec.com>
Greg Hackmann [Tue, 29 Apr 2014 18:18:45 +0000 (11:18 -0700)]
video: adf: fbdev: add stubs for kernels without ADF_FBDEV
Change-Id: I42e087cddc29f6b93749791606e80dbd3e6f59ce
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Tue, 29 Apr 2014 00:00:44 +0000 (17:00 -0700)]
video: adf: memblock: map buffer for dma
Change-Id: I4df13c8b45b57fd0594b5e7bf351a4da33a8cb11
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Alistair Strachan [Mon, 21 Apr 2014 20:09:23 +0000 (13:09 -0700)]
video: adf: use rb_erase in adf_obj_destroy.
Not calling rb_erase() can cause slab corruption, as the rb_first() call
after kfree() in adf_obj_destroy() can return the same node twice unless
it is erased.
This problem was reproduced by unloading a kernel module that used the
adf framework *after* a vsync event was registered. A crash would occur
in rb_first(). (Just loading and immediately unloading the module without
the vsync event worked correctly.)
Change-Id: I9fa7cb5d7519691e38a281439844aa193da13d1b
Signed-off-by: Alistair Strachan <alistair.strachan@imgtec.com>
Cc: Jonathan Hamilton <jonathan.hamilton@imgtec.com>
Cc: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Tue, 8 Apr 2014 20:07:29 +0000 (13:07 -0700)]
video: adf: adf_memblock_export symbol should be exported
Change-Id: I228db28da885b47b6fa9fc7e4001663797d24f49
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Tue, 8 Apr 2014 19:36:41 +0000 (12:36 -0700)]
video: adf: add buffer padding quirk
Quirks specify common behaviors that vary slightly among devices, and
which ADF must account for.
The buffer padding quirk captures the way different devices fetch the
last scanline in a buffer: some devices fetch an entire line (including
padding to the pitch) while others only fetch up to the visible width.
ADF's buffer size validation now takes this quirk into account.
Change-Id: I828b13316e27621d8a9efd9d5fffa6ce12a525ff
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Tue, 8 Apr 2014 19:25:12 +0000 (12:25 -0700)]
video: adf: document adf_format_validate_yuv's origin
Change-Id: I929045a96a56bdb2c915be92b8ef11b560f3ab79
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Wed, 26 Mar 2014 23:43:23 +0000 (16:43 -0700)]
video: adf: ensure consistent alignment on userspace facing structs
64-bit types in structs create alignment problems when a 32-bit x86
userspace talks to an x86_64 kernel. In most cases the 64-bit types can
be replaced with 32-bit ones, since they're being used for fds and
should have been __s32 in the first place. For adf_vsync_event,
alignment can be enforced by making the timestamp an __aligned_u64.
Change-Id: I87cf73d8f57730bd7bb43ffce6b7b411eb0ff198
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Mon, 24 Mar 2014 23:45:43 +0000 (16:45 -0700)]
video: adf: replace fbdev helper's open flag with refcount
A device's fb_info is shared between clients. fb_release() is called
when each client is released, not just the last one. Since the fbdev
helper needs to release its dma-buf when the last client goes away, it
must keep its own reference count.
fbmem and fbcon hold different locks while calling fb_release(), so
explicit locking is needed.
Change-Id: I42cd659f7633adba7c11f407d4b594bd43305d6a
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Alistair Strachan [Tue, 11 Mar 2014 00:00:25 +0000 (17:00 -0700)]
video: adf: export the adf_attachment_allow symbol to modules.
There are no in-tree users of adf_attachment_allow, but out-of-tree
modules want to use it. It looks like this function should be
EXPORT_SYMBOL.
Change-Id: Iad522dc5d32ac09fec6483bbc317db8ecae12e97
Signed-off-by: Alistair Strachan <alistair.strachan@imgtec.com>
Greg Hackmann [Fri, 14 Feb 2014 23:35:38 +0000 (15:35 -0800)]
video: adf: use %zu when printing size_t
Change-Id: I9cf7ebc368bad0a83db9e5aa370feadf117b21c0
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Fri, 14 Feb 2014 23:38:49 +0000 (15:38 -0800)]
video: adf: fix compat ioctls calling ioctl with wrong cmd
Change-Id: Icdbac3edd123b3114103dc138a60e6955006cda4
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Fri, 14 Feb 2014 23:39:52 +0000 (15:39 -0800)]
video: adf: use ADF_IOCTL_TYPE in compat ioctl definitions
Change-Id: I7451a282d9d972c9957568b366c164b67b4b47e8
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Mon, 13 Jan 2014 23:24:24 +0000 (15:24 -0800)]
video: adf: define constants for device-custom ioctls
Device-custom ADF ioctls can use type ADF_IOCTL_TYPE and
nr >= ADF_IOCTL_NR_CUSTOM
Change-Id: Ia8270973df5100e996ca0e021ede60e54b9af72a
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Fri, 22 Nov 2013 21:50:24 +0000 (13:50 -0800)]
video: adf: fix fbdev blank -> dpms state mapping
Change-Id: I96132a1b7275d389a6d0ba8899c6be838b63c422
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Wed, 20 Nov 2013 20:10:35 +0000 (12:10 -0800)]
video: adf: validate dpms state passed to blank
Change-Id: I3a4228d50fc4a2553b3e92e5675a94cbc6e71b8a
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Mon, 11 Nov 2013 22:31:12 +0000 (14:31 -0800)]
video: adf: fix ADF_MAX_ATTACHMENTS declaration
Userspace-facing ADF_MAX_ATTACHMENTS must be in terms of
userspace-facing struct adf_attachment_config
Change-Id: Iaaddcd6366f13b3e52eb3911efcfff8a61e0b225
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Wed, 20 Nov 2013 22:02:09 +0000 (14:02 -0800)]
video: adf: remove PAGE_SIZE from userspace-facing header
Systems may define PAGE_SIZE in userspace limits.h but don't have to.
PAGE_SIZE was picked as an arbitrary "reasonable" limit so just use 4096
instead.
Change-Id: I9555e39aba64a3a70f61eb6ded2a4129ab236ce0
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Thu, 7 Nov 2013 18:12:00 +0000 (10:12 -0800)]
video: adf: make device node names less hierarchical
adf/foobar/device -> adf0
adf/foobar/interface1 -> adf-interface0.1
adf/foobar/overlay-engine1 -> adf-overlay-engine0.1
Change-Id: I7af7f84ce3f101ecb02f448070c200ff3e03f2ec
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Thu, 17 Oct 2013 20:18:53 +0000 (13:18 -0700)]
video: adf: expose adf_modeinfo_set_{name,vrefresh} to drivers
Change-Id: Id9f8b2184927a77b244ce0b33d619d6e44a0f17a
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Wed, 16 Oct 2013 21:53:12 +0000 (14:53 -0700)]
video: adf: set default interface dpms_state to OFF
Interfaces default to unplugged, so they should also default to off
Change-Id: I36500a54b11f354a0d7dd2c9924a79e0d9c6f855
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Thu, 15 Aug 2013 19:51:22 +0000 (12:51 -0700)]
video: adf: make dpms_state sysfs attribute writable
Change-Id: I04e7785cbddac160003e6c9edaf62d20b367fdc9
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Tue, 15 Oct 2013 19:51:20 +0000 (12:51 -0700)]
video: adf: add helpers for validating custom formats
Many custom formats look a lot like the standard ones, but with
different subsampling, bpp, etc. Expose and document
adf_buffer_validate()'s main body, so drivers can reuse its logic when
validating these formats.
Change-Id: I1d06981c9e5aab26f3ab2956c08c679f2c823bcc
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Fri, 13 Sep 2013 18:23:05 +0000 (11:23 -0700)]
video: adf: add informational flags to interfaces
Informational flags don't affect ADF directly but may be useful to
clients. Currently used to indicate primary and external displays.
Change-Id: I343c7f0148da0869244c8e818350e9855525df85
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Tue, 9 Jul 2013 20:07:26 +0000 (13:07 -0700)]
video: adf: add fbdev compatibility helper
Change-Id: I2b82bb625f805e8edb27799743b290dda5befb97
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Tue, 11 Jun 2013 19:59:41 +0000 (12:59 -0700)]
video: adf: add supported formats to adf_overlay_engine_data
Change-Id: If2aa783b9ece60160f465bf697508fc58682e1bc
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Thu, 10 Oct 2013 20:03:26 +0000 (13:03 -0700)]
video: adf: support "simple" buffers
Simple buffers are linear RGB buffers analogous to KMS's dumb buffers.
Simple buffers can be allocated and posted to a display interface
without any driver-private data.
Internally, ADF drivers provide the driver-private data needed (if any)
to post a simple buffer to the display.
Change-Id: Ib0b737622eaf343111310f6623f99d69cf3807d2
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Mon, 8 Jul 2013 21:18:18 +0000 (14:18 -0700)]
video: adf: add memblock helper
Provides a dma-buf exporter for memblocks, mainly useful for ADF devices
to wrap their bootloader logos
Change-Id: I936a9b5df099ab6084d433fcaf50f3bc29f93289
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Greg Hackmann [Wed, 22 May 2013 21:23:10 +0000 (14:23 -0700)]
video: add atomic display framework
Change-Id: I693257e269a99012cd0dbb57576ac222869cf4c7
Signed-off-by: Greg Hackmann <ghackmann@google.com>
rahul.khandelwal [Fri, 17 Apr 2015 06:15:23 +0000 (11:45 +0530)]
subsystem: CPU FREQUENCY DRIVERS- Set cpu_load calculation on current frequency
In timer, cpu_load is calcuated on target_freq.
cpu_load = loadadjfreq / pcpu->target_freq;
But cpu is actually running on current freq i.e. pcpu->policy->cur. So cpu_load
should be calculated on current frequency.
cpu_load = loadadjfreq / pcpu->policy->cur;
Change-Id: I89db6b68e9f82aa52077f6bf7d819dab74265790
Signed-off-by: rahul.khandelwal <rahul.khandelwal@spreadtrum.com>
Amit Pundir [Fri, 20 Nov 2015 13:24:30 +0000 (18:54 +0530)]
cpufreq: interactive: build fixes for 4.4
Bring back cpufreq_{get,put}_global_kobject() definitions
removed by upstream commit
8eec1020f0c0 "cpufreq: create
cpu/cpufreq at boot time" to fix build failures.
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Amit Pundir [Tue, 3 Nov 2015 15:23:29 +0000 (20:53 +0530)]
cpufreq: interactive: replace strict_strtoul() with kstrtoul()
strict_strtoul() is obsolete. Use kstrtoul() instead.
Otherwise we run into following build error:
CC drivers/cpufreq/cpufreq_interactive.o
drivers/cpufreq/cpufreq_interactive.c: In function ‘store_hispeed_freq’:
drivers/cpufreq/cpufreq_interactive.c:784:2: error: implicit declaration of function ‘strict_strtoul’ [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[2]: *** [drivers/cpufreq/cpufreq_interactive.o] Error 1
Change-Id: Ib91b9df3af5fe2a244861c2f598bd20ec8115e6c
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Rohit Gupta [Sat, 7 Mar 2015 02:46:04 +0000 (18:46 -0800)]
cpufreq: interactive: Rearm governor timer at max freq
Interactive governor doesn't rearm per-cpu timer if target_freq is
equal to policy->max. However, this does not have clear performance
benefits. Profiling doesn't show any difference in benchmarks, games
or other workloads, if timers are always rearmed.
At same time, there are a few issues caused by not rearming timer
at policy->max.
1) min_sample_time enforcement is inconsistent
For target frequency that is lower than policy->max, it will not
drop until min_sample_time has passed since last frequency evaluation
selected current frequency. However, for policy->max, it will
always drop immediately as long as CPU has been run for longer than
min_sample_time. This is because timer is not running and thus
floor_freq and floor_validate_time is not updated.
Example: assume min_sample_time is 59ms and timer_rate is 20ms.
Frequency X < Y. Let's say CPU would pick the following frequencies
before accounting for min_sample_time in each 20ms sampling window.
Y, Y, Y, Y, X, X, X, X, X
If Y is not policy->max, the final target_freq after considering
min_sample_time will be Y, Y, Y, Y, *Y, *Y, X, X, X
* marks the windows where frequency is prevented from dropping.
If Y is policy->max, the final target_freq will be
Y, Y, Y, Y, X, X, X, X, X
2) Rearm timer in IDLE_START does not work as intended
IDLE_START/END is sent in arch_cpu_idle_enter/exit(). However, next
wake up is decided in tick_nohz_idle_enter(), which traverses the
timer list before idle notification is sent out. Therefore, rearming
timer in idle notification won't take effect until CPU wakes up at
least once. In rare scenarios when a CPU goes to idle and sleeps for a
long time immediately after a heavy load stops, it may not wake up
to drop its frequency vote for a long time, defeating the purpose of
having a slack_timer.
3) Need to rearm timer for policy->max change
commit
535a553fc1c4b4c3627c73214ade6326615a7463
(cpufreq: interactive: restructure CPUFREQ_GOV_LIMITS) mentions the
problem of timer getting indefinitely pushed back due to frequency
changes in policy->min/max. However, it still cancels and rearms timer
if policy->max is increased, and same problem could still happen if
policy->max is frequently changing after the fix. The best solution is
to always rearm timer for each CPU even if it's running at
policy->max.
Rearming timers even if target_freq is policy->max solves these
problems cleanly. It also simplifies the design and code of interactive
governor.
Change-Id: I973853d2375ea6f697fa4cee04a89efe6b8bf735
Reviewed-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Signed-off-by: Rohit Gupta <rohgup@codeaurora.org>
Junjie Wu [Tue, 24 Mar 2015 22:51:10 +0000 (15:51 -0700)]
cpufreq: interactive: Implement cluster-based min_sample_time
min_sample_time needs to be cluster-based to match
above_hispeed_delay. If each CPU keeps making local decisions, it's
possible min_sample_time is not correctly enforced at cluster level,
which results in undesired frequency drops.
Change-Id: Ia2ec2ad9b7a8d715d4408c924d6762b7e532e4b4
Reviewed-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Saravana Kannan [Wed, 15 Oct 2014 19:44:18 +0000 (12:44 -0700)]
cpufreq: interactive: Exercise hispeed settings at a policy level
If a heavy task migrates between otherwise idle CPUs in a policy during
every sample window, the above hispeed delay window for the CPUs would get
restarted for every sample window. Due to the continuous restart of above
hispeed delay window, none of the CPUs would ever pick a target frequency
higher than hispeed frequency. This causes the policy's frequency to be
stuck at hispeed freq even if the load justifies a higher frequency.
To fix this, the above high speed delay window is restarted only when the
policy frequency changes. This ensures that tasks migrating between CPUs in
a policy are handled correctly.
Also, the hispeed load/frequency heuristic is only necessary when the
information is insufficient to determine if the load on the CPU needs at
least hispeed frequency. When the policy frequency is already at or above
hispeed frequency, if the CPU load% based on policy frequency is not above
hispeed load, then the information is clearly sufficient to determine that
the load on the CPU does not need hispeed frequency.
Therefore, compute CPU load% (which is used only to compare against hispeed
load) based on policy frequency instead of CPU target frequency.
Change-Id: I8b5dfe6c50bee567a6719f0980e3f7757876ce4b
Signed-off-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Junjie Wu [Fri, 15 Aug 2014 23:34:37 +0000 (16:34 -0700)]
cpufreq: interactive: Round up timer_rate to match jiffy
Timers are scheduled in unit of jiffies. Round up timer_rate so that
it matches the actual sampling period.
Change-Id: I88386a5a448e40333f9a9b9f0cf72af58cb54656
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Junjie Wu [Mon, 6 Apr 2015 18:16:45 +0000 (11:16 -0700)]
cpufreq: interactive: Don't set floor_validate_time during boost
Frequency selection algorithm guarantees its chosen frequency
is not lower than hispeed_freq as long as boost is enabled.
Setting floor_freq and floor_validate_time during boost could block
CPU frequency from going below hispeed_freq even after
boostpulse_duration expires, if min_sample_time is higher than
boostpulse_duration. This conflicts with the intention of commit
de091367ead15b6e95dd1d0743a18f0da5a07ee5
(cpufreq: interactive: specify duration of CPU speed boost pulse)
to allow CPU to ramp down immediately after boost expires. It also
makes boost behavior inconsistent since it depends on min_sample_time.
Avoid setting floor_freq and floor_validate_time when boost starts.
Change-Id: I12852998af46cfbfaf8661eb5e8d5301b6f631e7
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Junjie Wu [Sat, 7 Feb 2015 04:28:37 +0000 (20:28 -0800)]
cpufreq: interactive: Put global cpufreq kobject on failure
Fix failure recovery path in cpufreq_governor_interactive(). Call
cpufreq_put_global_kobject() to release cpufreq global kobject upon
governor init failure.
Change-Id: I7a977070b7a3c75c90acccd2c117064ed1a10d0e
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Lianwei Wang [Wed, 3 Dec 2014 01:20:50 +0000 (17:20 -0800)]
cpufreq: interactive: only boost tunable affected cpus
It is not correct to boost all the cpus when tunable boost
parameters are changed. It also does not need to boost the
cpus which is already boosted.
Signed-off-by: Lianwei Wang <a22439@motorola.com>
Minsung Kim [Sat, 29 Nov 2014 12:43:53 +0000 (21:43 +0900)]
cpufreq: interactive: don't skip waking up speedchange_task if target_freq > policy->cur
When __cpufreq_driver_target() in speedchange_task failed for some reason, the
policy->cur could be lower than the target_freq. The governor misses to change
the target_freq if the target_freq is equal to the next_freq at the next sample
time.
Added a check to prevent the CPU to stay at the speed that is lower than the
target_freq for long duration.
Change-Id: Ibfdcd193b8280390b8f8374a63218aa31267f310
Signed-off-by: Minsung Kim <ms925.kim@samsung.com>
Cylen Yao [Sat, 6 Sep 2014 01:27:38 +0000 (18:27 -0700)]
cpufreq: interactive: make common_tunables static
common_tunables should be static.
Change-Id: I502ee3062bece5082fea7861eff2f6237e25cede
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Ruchi Kandoi [Fri, 13 Jun 2014 23:24:15 +0000 (16:24 -0700)]
cpufreq: interactive: prevents the frequency to directly raise above the hispeed_freq from a lower frequency.
When the load was below go_hispeed_load, there is a possibility that
choose_freq() would return a frequency which would be higher than the
hispeed_freq. According to the policy we should first jump to the
hispeed_freq, stay there for above_hispeed_delay and then be allowed to
raise higher than that.
Added a check to prevent the frequency to be directly raised to
something higher than the hispeed_freq.
Change-Id: Icda5d848dd9beadcc18835082ddf269732c75bd0
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Ruchi Kandoi [Wed, 9 Apr 2014 23:47:59 +0000 (16:47 -0700)]
cpufreq: interactive: remove compilation error from commit
49cc72365fb7ee87762a7ccc6a32ef68627216c5
Change-Id: I068b18281d03ac879ef64d8ff36ed43367293767
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Ruchi Kandoi [Thu, 3 Apr 2014 22:39:23 +0000 (15:39 -0700)]
cpufreq: interactive: turn boost_pulse off on boost off
Change-Id: I36fe217fa047d68ea90e78b12c7db4537ea8010b
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Badhri Jagan Sridharan [Tue, 8 Apr 2014 01:26:30 +0000 (18:26 -0700)]
cpufreq: interactive: restructure CPUFREQ_GOV_LIMITS
The cpufreq_interactive_timer gets cancelled and rescheduled
whenever the cpufreq_policy is changed. When the cpufreq policy is
changed at a rate faster than the sampling_rate of the interactive
governor, then the governor misses to change the target frequency
for long duration. The patch removes the need of cancelling the
timers when policy->min is changed.
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: Ibd98d151e1c73b8bd969484583ff98ee9f1135ef
Greg Hackmann [Mon, 8 Dec 2014 18:08:35 +0000 (10:08 -0800)]
cpufreq: interactive: hold reference on global cpufreq kobject if needed
2361be23666232dbb4851a527f466c4cbf5340fc changed cpufreq to add the
global cpufreq kobject to sysfs on demand.
To ensure this happens, cpufreq_interactive must hold a reference on
this object on devices where it intends to use it (i.e., devices where
have_governor_per_policy() returns false). Otherwise a parentless
kobject will be passed to sysfs_create_group() which will subsequently
BUG().
Change-Id: I7dd03956e1d3c6c3c0cc17c799882c235804ae09
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Viresh Kumar [Thu, 16 May 2013 08:52:49 +0000 (14:22 +0530)]
cpufreq: interactive: Use generic get_cpu_idle_time() from cpufreq.c
Now that a generic version of get_cpu_idle_time() is available, use that for the interactive governor.
[toddpoynor@google.com: commit text changes]
Change-Id: Ia38b57085aac99ec3d415fe44471d5dfde519c2c
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Minsung Kim [Sun, 19 Jan 2014 05:32:42 +0000 (14:32 +0900)]
cpufreq: interactive: fix NULL pointer dereference at sysfs ops
sysfs ops for target_loads and above_hispeed_delay can be called before
initializing tunables at CPUFREQ_GOV_POLICY_INIT. Create sysfs entries after
initialization.
Change-Id: I50356198d7629731c0d32a3066d61fe8354e0001
Signed-off-by: Minsung Kim <ms925.kim@samsung.com>