Advantages:
* It provides a nice large console (128 cols + 48 lines with 1024x768)
- without using tiny, unreadable fonts.
+ without using tiny, unreadable fonts (NOT on the Dreamcast)
* You can run XF86_FBDev on top of /dev/fb0
* Most important: boot logo :-)
Disadvantages:
- * Driver is currently limited to the Dreamcast PowerVR 2 implementation
- at the time of this writing.
+ * Driver is largely untested on non-Dreamcast systems.
Configuration
=============
font:X - default font to use. All fonts are supported, including the
SUN12x22 font which is very nice at high resolutions.
-mode:X - default video mode. The following video modes are supported:
- 640x240-60, 640x480-60.
+mode:X - default video mode with format [xres]x[yres]-<bpp>@<refresh rate>
+ The following video modes are supported:
+ 640x640-16@60, 640x480-24@60, 640x480-32@60. The Dreamcast
+ defaults to 640x480-16@60. At the time of writing the
+ 24bpp and 32bpp modes function poorly. Work to fix that is
+ ongoing
+
Note: the 640x240 mode is currently broken, and should not be
- used for any reason. It is only mentioned as a reference.
+ used for any reason. It is only mentioned here as a reference.
inverse - invert colors on screen (for LCD displays)
X11
===
-XF86_FBDev should work, in theory. At the time of this writing it is
-totally untested and may or may not even portray the beginnings of
-working. If you end up testing this, please let me know!
+XF86_FBDev has been shown to work on the Dreamcast in the past - though not yet
+on any 2.6 series kernel.
--
Paul Mundt <lethal@linuxdc.org>
+Updated by Adrian McMenamin <adrian@mcmen.demon.co.uk>
+---------------------------------------------------------------------------
+!!!!!!!!!!!!!!!WARNING!!!!!!!!
+The zero page is a kernel internal data structure, not a stable ABI. It might change
+without warning and the kernel has no way to detect old version of it.
+If you're writing some external code like a boot loader you should only use
+the stable versioned real mode boot protocol described in boot.txt. Otherwise the kernel
+might break you at any time.
+!!!!!!!!!!!!!WARNING!!!!!!!!!!!
+----------------------------------------------------------------------------
+
Summary of boot_params layout (kernel point of view)
( collected by Hans Lermen and Martin Mares )
times, the limit is set to the largest selection.
Reverse dependencies can only be used with boolean or tristate
symbols.
+ Note:
+ select is evil.... select will by brute force set a symbol
+ equal to 'y' without visiting the dependencies. So abusing
+ select you are able to select a symbol FOO even if FOO depends
+ on BAR that is not set. In general use select only for
+ non-visible symbols (no promts anywhere) and for symbols with
+ no dependencies. That will limit the usefulness but on the
+ other hand avoid the illegal configurations all over. kconfig
+ should one day warn about such things.
- numerical ranges: "range" <symbol> <symbol> ["if" <expr>]
This allows to limit the range of possible input values for int
See header of drivers/scsi/wd7000.c.
wdt= [WDT] Watchdog
- See Documentation/watchdog/watchdog.txt.
+ See Documentation/watchdog/wdt.txt.
xd= [HW,XT] Original XT pre-IDE (RLL encoded) disks.
xd_geo= See header of drivers/block/xd.c.
--- /dev/null
+==============
+Memory Hotplug
+==============
+
+Last Updated: Jul 28 2007
+
+This document is about memory hotplug including how-to-use and current status.
+Because Memory Hotplug is still under development, contents of this text will
+be changed often.
+
+1. Introduction
+ 1.1 purpose of memory hotplug
+ 1.2. Phases of memory hotplug
+ 1.3. Unit of Memory online/offline operation
+2. Kernel Configuration
+3. sysfs files for memory hotplug
+4. Physical memory hot-add phase
+ 4.1 Hardware(Firmware) Support
+ 4.2 Notify memory hot-add event by hand
+5. Logical Memory hot-add phase
+ 5.1. State of memory
+ 5.2. How to online memory
+6. Logical memory remove
+ 6.1 Memory offline and ZONE_MOVABLE
+ 6.2. How to offline memory
+7. Physical memory remove
+8. Future Work List
+
+Note(1): x86_64's has special implementation for memory hotplug.
+ This text does not describe it.
+Note(2): This text assumes that sysfs is mounted at /sys.
+
+
+---------------
+1. Introduction
+---------------
+
+1.1 purpose of memory hotplug
+------------
+Memory Hotplug allows users to increase/decrease the amount of memory.
+Generally, there are two purposes.
+
+(A) For changing the amount of memory.
+ This is to allow a feature like capacity on demand.
+(B) For installing/removing DIMMs or NUMA-nodes physically.
+ This is to exchange DIMMs/NUMA-nodes, reduce power consumption, etc.
+
+(A) is required by highly virtualized environments and (B) is required by
+hardware which supports memory power management.
+
+Linux memory hotplug is designed for both purpose.
+
+
+1.2. Phases of memory hotplug
+---------------
+There are 2 phases in Memory Hotplug.
+ 1) Physical Memory Hotplug phase
+ 2) Logical Memory Hotplug phase.
+
+The First phase is to communicate hardware/firmware and make/erase
+environment for hotplugged memory. Basically, this phase is necessary
+for the purpose (B), but this is good phase for communication between
+highly virtualized environments too.
+
+When memory is hotplugged, the kernel recognizes new memory, makes new memory
+management tables, and makes sysfs files for new memory's operation.
+
+If firmware supports notification of connection of new memory to OS,
+this phase is triggered automatically. ACPI can notify this event. If not,
+"probe" operation by system administration is used instead.
+(see Section 4.).
+
+Logical Memory Hotplug phase is to change memory state into
+avaiable/unavailable for users. Amount of memory from user's view is
+changed by this phase. The kernel makes all memory in it as free pages
+when a memory range is available.
+
+In this document, this phase is described as online/offline.
+
+Logical Memory Hotplug phase is triggred by write of sysfs file by system
+administrator. For the hot-add case, it must be executed after Physical Hotplug
+phase by hand.
+(However, if you writes udev's hotplug scripts for memory hotplug, these
+ phases can be execute in seamless way.)
+
+
+1.3. Unit of Memory online/offline operation
+------------
+Memory hotplug uses SPARSEMEM memory model. SPARSEMEM divides the whole memory
+into chunks of the same size. The chunk is called a "section". The size of
+a section is architecture dependent. For example, power uses 16MiB, ia64 uses
+1GiB. The unit of online/offline operation is "one section". (see Section 3.)
+
+To determine the size of sections, please read this file:
+
+/sys/devices/system/memory/block_size_bytes
+
+This file shows the size of sections in byte.
+
+-----------------------
+2. Kernel Configuration
+-----------------------
+To use memory hotplug feature, kernel must be compiled with following
+config options.
+
+- For all memory hotplug
+ Memory model -> Sparse Memory (CONFIG_SPARSEMEM)
+ Allow for memory hot-add (CONFIG_MEMORY_HOTPLUG)
+
+- To enable memory removal, the followings are also necessary
+ Allow for memory hot remove (CONFIG_MEMORY_HOTREMOVE)
+ Page Migration (CONFIG_MIGRATION)
+
+- For ACPI memory hotplug, the followings are also necessary
+ Memory hotplug (under ACPI Support menu) (CONFIG_ACPI_HOTPLUG_MEMORY)
+ This option can be kernel module.
+
+- As a related configuration, if your box has a feature of NUMA-node hotplug
+ via ACPI, then this option is necessary too.
+ ACPI0004,PNP0A05 and PNP0A06 Container Driver (under ACPI Support menu)
+ (CONFIG_ACPI_CONTAINER).
+ This option can be kernel module too.
+
+--------------------------------
+3 sysfs files for memory hotplug
+--------------------------------
+All sections have their device information under /sys/devices/system/memory as
+
+/sys/devices/system/memory/memoryXXX
+(XXX is section id.)
+
+Now, XXX is defined as start_address_of_section / section_size.
+
+For example, assume 1GiB section size. A device for a memory starting at
+0x100000000 is /sys/device/system/memory/memory4
+(0x100000000 / 1Gib = 4)
+This device covers address range [0x100000000 ... 0x140000000)
+
+Under each section, you can see 3 files.
+
+/sys/devices/system/memory/memoryXXX/phys_index
+/sys/devices/system/memory/memoryXXX/phys_device
+/sys/devices/system/memory/memoryXXX/state
+
+'phys_index' : read-only and contains section id, same as XXX.
+'state' : read-write
+ at read: contains online/offline state of memory.
+ at write: user can specify "online", "offline" command
+'phys_device': read-only: designed to show the name of physical memory device.
+ This is not well implemented now.
+
+NOTE:
+ These directories/files appear after physical memory hotplug phase.
+
+
+--------------------------------
+4. Physical memory hot-add phase
+--------------------------------
+
+4.1 Hardware(Firmware) Support
+------------
+On x86_64/ia64 platform, memory hotplug by ACPI is supported.
+
+In general, the firmware (ACPI) which supports memory hotplug defines
+memory class object of _HID "PNP0C80". When a notify is asserted to PNP0C80,
+Linux's ACPI handler does hot-add memory to the system and calls a hotplug udev
+script. This will be done automatically.
+
+But scripts for memory hotplug are not contained in generic udev package(now).
+You may have to write it by yourself or online/offline memory by hand.
+Please see "How to online memory", "How to offline memory" in this text.
+
+If firmware supports NUMA-node hotplug, and defines an object _HID "ACPI0004",
+"PNP0A05", or "PNP0A06", notification is asserted to it, and ACPI handler
+calls hotplug code for all of objects which are defined in it.
+If memory device is found, memory hotplug code will be called.
+
+
+4.2 Notify memory hot-add event by hand
+------------
+In some environments, especially virtualized environment, firmware will not
+notify memory hotplug event to the kernel. For such environment, "probe"
+interface is supported. This interface depends on CONFIG_ARCH_MEMORY_PROBE.
+
+Now, CONFIG_ARCH_MEMORY_PROBE is supported only by powerpc but it does not
+contain highly architecture codes. Please add config if you need "probe"
+interface.
+
+Probe interface is located at
+/sys/devices/system/memory/probe
+
+You can tell the physical address of new memory to the kernel by
+
+% echo start_address_of_new_memory > /sys/devices/system/memory/probe
+
+Then, [start_address_of_new_memory, start_address_of_new_memory + section_size)
+memory range is hot-added. In this case, hotplug script is not called (in
+current implementation). You'll have to online memory by yourself.
+Please see "How to online memory" in this text.
+
+
+
+------------------------------
+5. Logical Memory hot-add phase
+------------------------------
+
+5.1. State of memory
+------------
+To see (online/offline) state of memory section, read 'state' file.
+
+% cat /sys/device/system/memory/memoryXXX/state
+
+
+If the memory section is online, you'll read "online".
+If the memory section is offline, you'll read "offline".
+
+
+5.2. How to online memory
+------------
+Even if the memory is hot-added, it is not at ready-to-use state.
+For using newly added memory, you have to "online" the memory section.
+
+For onlining, you have to write "online" to the section's state file as:
+
+% echo online > /sys/devices/system/memory/memoryXXX/state
+
+After this, section memoryXXX's state will be 'online' and the amount of
+available memory will be increased.
+
+Currently, newly added memory is added as ZONE_NORMAL (for powerpc, ZONE_DMA).
+This may be changed in future.
+
+
+
+------------------------
+6. Logical memory remove
+------------------------
+
+6.1 Memory offline and ZONE_MOVABLE
+------------
+Memory offlining is more complicated than memory online. Because memory offline
+has to make the whole memory section be unused, memory offline can fail if
+the section includes memory which cannot be freed.
+
+In general, memory offline can use 2 techniques.
+
+(1) reclaim and free all memory in the section.
+(2) migrate all pages in the section.
+
+In the current implementation, Linux's memory offline uses method (2), freeing
+all pages in the section by page migration. But not all pages are
+migratable. Under current Linux, migratable pages are anonymous pages and
+page caches. For offlining a section by migration, the kernel has to guarantee
+that the section contains only migratable pages.
+
+Now, a boot option for making a section which consists of migratable pages is
+supported. By specifying "kernelcore=" or "movablecore=" boot option, you can
+create ZONE_MOVABLE...a zone which is just used for movable pages.
+(See also Documentation/kernel-parameters.txt)
+
+Assume the system has "TOTAL" amount of memory at boot time, this boot option
+creates ZONE_MOVABLE as following.
+
+1) When kernelcore=YYYY boot option is used,
+ Size of memory not for movable pages (not for offline) is YYYY.
+ Size of memory for movable pages (for offline) is TOTAL-YYYY.
+
+2) When movablecore=ZZZZ boot option is used,
+ Size of memory not for movable pages (not for offline) is TOTAL - ZZZZ.
+ Size of memory for movable pages (for offline) is ZZZZ.
+
+
+Note) Unfortunately, there is no information to show which section belongs
+to ZONE_MOVABLE. This is TBD.
+
+
+6.2. How to offline memory
+------------
+You can offline a section by using the same sysfs interface that was used in
+memory onlining.
+
+% echo offline > /sys/devices/system/memory/memoryXXX/state
+
+If offline succeeds, the state of the memory section is changed to be "offline".
+If it fails, some error core (like -EBUSY) will be returned by the kernel.
+Even if a section does not belong to ZONE_MOVABLE, you can try to offline it.
+If it doesn't contain 'unmovable' memory, you'll get success.
+
+A section under ZONE_MOVABLE is considered to be able to be offlined easily.
+But under some busy state, it may return -EBUSY. Even if a memory section
+cannot be offlined due to -EBUSY, you can retry offlining it and may be able to
+offline it (or not).
+(For example, a page is referred to by some kernel internal call and released
+ soon.)
+
+Consideration:
+Memory hotplug's design direction is to make the possibility of memory offlining
+higher and to guarantee unplugging memory under any situation. But it needs
+more work. Returning -EBUSY under some situation may be good because the user
+can decide to retry more or not by himself. Currently, memory offlining code
+does some amount of retry with 120 seconds timeout.
+
+-------------------------
+7. Physical memory remove
+-------------------------
+Need more implementation yet....
+ - Notification completion of remove works by OS to firmware.
+ - Guard from remove if not yet.
+
+--------------
+8. Future Work
+--------------
+ - allowing memory hot-add to ZONE_MOVABLE. maybe we need some switch like
+ sysctl or new control file.
+ - showing memory section and physical device relationship.
+ - showing memory section and node relationship (maybe good for NUMA)
+ - showing memory section is under ZONE_MOVABLE or not
+ - test and make it better memory offlining.
+ - support HugeTLB page migration and offlining.
+ - memmap removing at memory offline.
+ - physical remove memory.
+
Linux Magic System Request Key Hacks
Documentation for sysrq.c
-Last update: 2007-MAR-14
+Last update: 2007-AUG-04
* What is the magic SysRq key?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
'g' - Used by kgdb on ppc and sh platforms.
'h' - Will display help (actually any other key than those listed
- above will display help. but 'h' is easy to remember :-)
+ here will display help. but 'h' is easy to remember :-)
'i' - Send a SIGKILL to all processes, except for init.
W: http://xf.iksaif.net/acpi4asus
S: Maintained
+ASYNCHRONOUS TRANSFERS/TRANSFORMS API
+P: Dan Williams
+M: dan.j.williams@intel.com
+P: Shannon Nelson
+M: shannon.nelson@intel.com
+L: linux-kernel@vger.kernel.org
+W: http://sourceforge.net/projects/xscaleiop
+S: Supported
+
ATA OVER ETHERNET DRIVER
P: Ed L. Cashin
M: ecashin@coraid.com
AUDIT SUBSYSTEM
P: David Woodhouse
M: dwmw2@infradead.org
-L: linux-audit@redhat.com
+L: linux-audit@redhat.com (subscribers-only)
W: http://people.redhat.com/sgrubb/audit/
T: git kernel.org:/pub/scm/linux/kernel/git/dwmw2/audit-2.6.git
S: Maintained
L: netdev@vger.kernel.org
S: Maintained
-DMA GENERIC MEMCPY SUBSYSTEM
+DMA GENERIC OFFLOAD ENGINE SUBSYSTEM
P: Shannon Nelson
M: shannon.nelson@intel.com
+P: Dan Williams
+M: dan.j.williams@intel.com
L: linux-kernel@vger.kernel.org
-S: Maintained
+S: Supported
DME1737 HARDWARE MONITOR DRIVER
P: Juerg Haefliger
L: linux-kernel@vger.kernel.org
S: Supported
+INTEL IOP-ADMA DMA DRIVER
+P: Dan Williams
+M: dan.j.williams@intel.com
+L: linux-kernel@vger.kernel.org
+S: Supported
+
INTEL IXP4XX RANDOM NUMBER GENERATOR SUPPORT
P: Deepak Saxena
M: dsaxena@plexity.net
/*
* Titan Family
*/
+static void __init
+titan_request_irq(unsigned int irq, irq_handler_t handler,
+ unsigned long irqflags, const char *devname,
+ void *dev_id)
+{
+ int err;
+ err = request_irq(irq, handler, irqflags, devname, dev_id);
+ if (err) {
+ printk("titan_request_irq for IRQ %d returned %d; ignoring\n",
+ irq, err);
+ }
+}
+
static void __init
titan_late_init(void)
{
* all reported to the kernel as machine checks, so the handler
* is a nop so it can be called to count the individual events.
*/
- request_irq(63+16, titan_intr_nop, IRQF_DISABLED,
+ titan_request_irq(63+16, titan_intr_nop, IRQF_DISABLED,
"CChip Error", NULL);
- request_irq(62+16, titan_intr_nop, IRQF_DISABLED,
+ titan_request_irq(62+16, titan_intr_nop, IRQF_DISABLED,
"PChip 0 H_Error", NULL);
- request_irq(61+16, titan_intr_nop, IRQF_DISABLED,
+ titan_request_irq(61+16, titan_intr_nop, IRQF_DISABLED,
"PChip 1 H_Error", NULL);
- request_irq(60+16, titan_intr_nop, IRQF_DISABLED,
+ titan_request_irq(60+16, titan_intr_nop, IRQF_DISABLED,
"PChip 0 C_Error", NULL);
- request_irq(59+16, titan_intr_nop, IRQF_DISABLED,
+ titan_request_irq(59+16, titan_intr_nop, IRQF_DISABLED,
"PChip 1 C_Error", NULL);
/*
* Hook a couple of extra err interrupts that the
* common titan code won't.
*/
- request_irq(53+16, titan_intr_nop, IRQF_DISABLED,
+ titan_request_irq(53+16, titan_intr_nop, IRQF_DISABLED,
"NMI", NULL);
- request_irq(50+16, titan_intr_nop, IRQF_DISABLED,
+ titan_request_irq(50+16, titan_intr_nop, IRQF_DISABLED,
"Temperature Warning", NULL);
/*
#include <linux/module.h>
#include <linux/init_task.h>
#include <linux/mqueue.h>
+#include <linux/fs.h>
static struct fs_struct init_fs = INIT_FS;
static struct files_struct init_files = INIT_FILES;
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/uaccess.h>
+#include <linux/fs.h>
+#include <linux/err.h>
#include <asm/blackfin.h>
#include <asm/fixed_code.h>
#include <linux/syscalls.h>
#include <linux/mman.h>
#include <linux/file.h>
+#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/ipc.h>
#include <linux/unistd.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kallsyms.h>
+#include <linux/fs.h>
#include <asm/traps.h>
#include <asm/cacheflush.h>
#include <asm/blackfin.h>
source "drivers/telephony/Kconfig"
-source "drivers/cdrom/Kconfig"
-
#
# input before char - char/joystick depends on it. As does USB.
#
.long sys_signalfd
.long sys_timerfd
.long sys_eventfd
+ .long sys_fallocate
syscall_table_size = (. - sys_call_table)
#include <asm/mce.h>
#include <asm/nmi.h>
+#define MAX_PATCH_LEN (255-1)
+
#ifdef CONFIG_HOTPLUG_CPU
static int smp_alt_once;
#endif /* CONFIG_X86_64 */
-static void nop_out(void *insns, unsigned int len)
+/* Use this to add nops to a buffer, then text_poke the whole buffer. */
+static void add_nops(void *insns, unsigned int len)
{
unsigned char **noptable = find_nop_table();
unsigned int noplen = len;
if (noplen > ASM_NOP_MAX)
noplen = ASM_NOP_MAX;
- text_poke(insns, noptable[noplen], noplen);
+ memcpy(insns, noptable[noplen], noplen);
insns += noplen;
len -= noplen;
}
void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
{
struct alt_instr *a;
- u8 *instr;
- int diff;
+ char insnbuf[MAX_PATCH_LEN];
DPRINTK("%s: alt table %p -> %p\n", __FUNCTION__, start, end);
for (a = start; a < end; a++) {
+ u8 *instr = a->instr;
BUG_ON(a->replacementlen > a->instrlen);
+ BUG_ON(a->instrlen > sizeof(insnbuf));
if (!boot_cpu_has(a->cpuid))
continue;
- instr = a->instr;
#ifdef CONFIG_X86_64
/* vsyscall code is not mapped yet. resolve it manually. */
if (instr >= (u8 *)VSYSCALL_START && instr < (u8*)VSYSCALL_END) {
__FUNCTION__, a->instr, instr);
}
#endif
- memcpy(instr, a->replacement, a->replacementlen);
- diff = a->instrlen - a->replacementlen;
- nop_out(instr + a->replacementlen, diff);
+ memcpy(insnbuf, a->replacement, a->replacementlen);
+ add_nops(insnbuf + a->replacementlen,
+ a->instrlen - a->replacementlen);
+ text_poke(instr, insnbuf, a->instrlen);
}
}
static void alternatives_smp_unlock(u8 **start, u8 **end, u8 *text, u8 *text_end)
{
u8 **ptr;
+ char insn[1];
if (noreplace_smp)
return;
+ add_nops(insn, 1);
for (ptr = start; ptr < end; ptr++) {
if (*ptr < text)
continue;
if (*ptr > text_end)
continue;
- nop_out(*ptr, 1);
+ text_poke(*ptr, insn, 1);
};
}
struct paravirt_patch_site *end)
{
struct paravirt_patch_site *p;
+ char insnbuf[MAX_PATCH_LEN];
if (noreplace_paravirt)
return;
for (p = start; p < end; p++) {
unsigned int used;
- used = paravirt_ops.patch(p->instrtype, p->clobbers, p->instr,
- p->len);
+ BUG_ON(p->len > MAX_PATCH_LEN);
+ used = paravirt_ops.patch(p->instrtype, p->clobbers, insnbuf,
+ (unsigned long)p->instr, p->len);
BUG_ON(used > p->len);
/* Pad the rest with nops */
- nop_out(p->instr + used, p->len - used);
+ add_nops(insnbuf + used, p->len - used);
+ text_poke(p->instr, insnbuf, p->len);
}
}
extern struct paravirt_patch_site __start_parainstructions[],
that might execute the to be patched code.
Other CPUs are not running. */
stop_nmi();
-#ifdef CONFIG_MCE
+#ifdef CONFIG_X86_MCE
stop_mce();
#endif
local_irq_restore(flags);
restart_nmi();
-#ifdef CONFIG_MCE
+#ifdef CONFIG_X86_MCE
restart_mce();
#endif
}
/* Local APIC timer verification ok */
static int local_apic_timer_verify_ok;
-/* Disable local APIC timer from the kernel commandline or via dmi quirk */
-static int local_apic_timer_disabled;
+/* Disable local APIC timer from the kernel commandline or via dmi quirk
+ or using CPU MSR check */
+int local_apic_timer_disabled;
/* Local APIC timer works in C2 */
int local_apic_timer_c2_ok;
EXPORT_SYMBOL_GPL(local_apic_timer_c2_ok);
long delta, deltapm;
int pm_referenced = 0;
- if (boot_cpu_has(X86_FEATURE_LAPIC_TIMER_BROKEN))
- local_apic_timer_disabled = 1;
-
/*
* The local apic timer can be disabled via the kernel
- * commandline or from the test above. Register the lapic
+ * commandline or from the CPU detection code. Register the lapic
* timer as a dummy clock event source on SMP systems, so the
* broadcast mechanism is used. On UP systems simply ignore it.
*/
#include <linux/mm.h>
#include <asm/io.h>
#include <asm/processor.h>
+#include <asm/apic.h>
#include "cpu.h"
extern void vide(void);
__asm__(".align 4\nvide: ret");
+#ifdef CONFIG_X86_LOCAL_APIC
#define ENABLE_C1E_MASK 0x18000000
#define CPUID_PROCESSOR_SIGNATURE 1
#define CPUID_XFAM 0x0ff00000
}
return 0;
}
+#endif
int force_mwait __cpuinitdata;
num_cache_leaves = 3;
}
+#ifdef CONFIG_X86_LOCAL_APIC
if (amd_apic_timer_broken())
- set_bit(X86_FEATURE_LAPIC_TIMER_BROKEN, c->x86_capability);
+ local_apic_timer_disabled = 1;
+#endif
if (c->x86 == 0x10 && !force_mwait)
clear_bit(X86_FEATURE_MWAIT, c->x86_capability);
static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE];
#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE)
-#define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + 0x1000000)
+#define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM)
static void doublefault_fn(void)
{
store_gdt(&gdt_desc);
gdt = gdt_desc.address;
- printk("double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size);
+ printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size);
if (ptr_ok(gdt)) {
gdt += GDT_ENTRY_TSS << 3;
tss = *(u16 *)(gdt+2);
tss += *(u8 *)(gdt+4) << 16;
tss += *(u8 *)(gdt+7) << 24;
- printk("double fault, tss at %08lx\n", tss);
+ printk(KERN_EMERG "double fault, tss at %08lx\n", tss);
if (ptr_ok(tss)) {
struct i386_hw_tss *t = (struct i386_hw_tss *)tss;
- printk("eip = %08lx, esp = %08lx\n", t->eip, t->esp);
+ printk(KERN_EMERG "eip = %08lx, esp = %08lx\n", t->eip, t->esp);
- printk("eax = %08lx, ebx = %08lx, ecx = %08lx, edx = %08lx\n",
+ printk(KERN_EMERG "eax = %08lx, ebx = %08lx, ecx = %08lx, edx = %08lx\n",
t->eax, t->ebx, t->ecx, t->edx);
- printk("esi = %08lx, edi = %08lx\n",
+ printk(KERN_EMERG "esi = %08lx, edi = %08lx\n",
t->esi, t->edi);
}
}
.cs = __KERNEL_CS,
.ss = __KERNEL_DS,
.ds = __USER_DS,
+ .fs = __KERNEL_PERCPU,
.__cr3 = __pa(swapper_pg_dir)
}
* which will be freed later
*/
-#ifdef CONFIG_HOTPLUG_CPU
-.section .text,"ax",@progbits
-#else
+#ifndef CONFIG_HOTPLUG_CPU
.section .init.text,"ax",@progbits
#endif
DEF_NATIVE(ud2a, "ud2a");
-static unsigned native_patch(u8 type, u16 clobbers, void *insns, unsigned len)
+static unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
+ unsigned long addr, unsigned len)
{
const unsigned char *start, *end;
unsigned ret;
#undef SITE
patch_site:
- ret = paravirt_patch_insns(insns, len, start, end);
+ ret = paravirt_patch_insns(ibuf, len, start, end);
break;
case PARAVIRT_PATCH(make_pgd):
break;
default:
- ret = paravirt_patch_default(type, clobbers, insns, len);
+ ret = paravirt_patch_default(type, clobbers, ibuf, addr, len);
break;
}
u32 delta;
} __attribute__((packed));
-unsigned paravirt_patch_call(void *target, u16 tgt_clobbers,
- void *site, u16 site_clobbers,
+unsigned paravirt_patch_call(void *insnbuf,
+ const void *target, u16 tgt_clobbers,
+ unsigned long addr, u16 site_clobbers,
unsigned len)
{
- unsigned char *call = site;
- unsigned long delta = (unsigned long)target - (unsigned long)(call+5);
- struct branch b;
+ struct branch *b = insnbuf;
+ unsigned long delta = (unsigned long)target - (addr+5);
if (tgt_clobbers & ~site_clobbers)
return len; /* target would clobber too much for this site */
if (len < 5)
return len; /* call too long for patch site */
- b.opcode = 0xe8; /* call */
- b.delta = delta;
- BUILD_BUG_ON(sizeof(b) != 5);
- text_poke(call, (unsigned char *)&b, 5);
+ b->opcode = 0xe8; /* call */
+ b->delta = delta;
+ BUILD_BUG_ON(sizeof(*b) != 5);
return 5;
}
-unsigned paravirt_patch_jmp(void *target, void *site, unsigned len)
+unsigned paravirt_patch_jmp(const void *target, void *insnbuf,
+ unsigned long addr, unsigned len)
{
- unsigned char *jmp = site;
- unsigned long delta = (unsigned long)target - (unsigned long)(jmp+5);
- struct branch b;
+ struct branch *b = insnbuf;
+ unsigned long delta = (unsigned long)target - (addr+5);
if (len < 5)
return len; /* call too long for patch site */
- b.opcode = 0xe9; /* jmp */
- b.delta = delta;
- text_poke(jmp, (unsigned char *)&b, 5);
+ b->opcode = 0xe9; /* jmp */
+ b->delta = delta;
return 5;
}
-unsigned paravirt_patch_default(u8 type, u16 clobbers, void *site, unsigned len)
+unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
+ unsigned long addr, unsigned len)
{
void *opfunc = *((void **)¶virt_ops + type);
unsigned ret;
if (opfunc == NULL)
/* If there's no function, patch it with a ud2a (BUG) */
- ret = paravirt_patch_insns(site, len, start_ud2a, end_ud2a);
+ ret = paravirt_patch_insns(insnbuf, len, start_ud2a, end_ud2a);
else if (opfunc == paravirt_nop)
/* If the operation is a nop, then nop the callsite */
ret = paravirt_patch_nop();
else if (type == PARAVIRT_PATCH(iret) ||
type == PARAVIRT_PATCH(irq_enable_sysexit))
/* If operation requires a jmp, then jmp */
- ret = paravirt_patch_jmp(opfunc, site, len);
+ ret = paravirt_patch_jmp(opfunc, insnbuf, addr, len);
else
/* Otherwise call the function; assume target could
clobber any caller-save reg */
- ret = paravirt_patch_call(opfunc, CLBR_ANY,
- site, clobbers, len);
+ ret = paravirt_patch_call(insnbuf, opfunc, CLBR_ANY,
+ addr, clobbers, len);
return ret;
}
-unsigned paravirt_patch_insns(void *site, unsigned len,
+unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
const char *start, const char *end)
{
unsigned insn_len = end - start;
if (insn_len > len || start == NULL)
insn_len = len;
else
- memcpy(site, start, insn_len);
+ memcpy(insnbuf, start, insn_len);
return insn_len;
}
#define IRQ_PATCH_INT_MASK 0
#define IRQ_PATCH_DISABLE 5
-static inline void patch_offset(unsigned char *eip, unsigned char *dest)
+static inline void patch_offset(void *insnbuf,
+ unsigned long eip, unsigned long dest)
{
- *(unsigned long *)(eip+1) = dest-eip-5;
+ *(unsigned long *)(insnbuf+1) = dest-eip-5;
}
-static unsigned patch_internal(int call, unsigned len, void *insns)
+static unsigned patch_internal(int call, unsigned len, void *insnbuf,
+ unsigned long eip)
{
u64 reloc;
struct vmi_relocation_info *const rel = (struct vmi_relocation_info *)&reloc;
switch(rel->type) {
case VMI_RELOCATION_CALL_REL:
BUG_ON(len < 5);
- *(char *)insns = MNEM_CALL;
- patch_offset(insns, rel->eip);
+ *(char *)insnbuf = MNEM_CALL;
+ patch_offset(insnbuf, eip, (unsigned long)rel->eip);
return 5;
case VMI_RELOCATION_JUMP_REL:
BUG_ON(len < 5);
- *(char *)insns = MNEM_JMP;
- patch_offset(insns, rel->eip);
+ *(char *)insnbuf = MNEM_JMP;
+ patch_offset(insnbuf, eip, (unsigned long)rel->eip);
return 5;
case VMI_RELOCATION_NOP:
* Apply patch if appropriate, return length of new instruction
* sequence. The callee does nop padding for us.
*/
-static unsigned vmi_patch(u8 type, u16 clobbers, void *insns, unsigned len)
+static unsigned vmi_patch(u8 type, u16 clobbers, void *insns,
+ unsigned long eip, unsigned len)
{
switch (type) {
case PARAVIRT_PATCH(irq_disable):
- return patch_internal(VMI_CALL_DisableInterrupts, len, insns);
+ return patch_internal(VMI_CALL_DisableInterrupts, len,
+ insns, eip);
case PARAVIRT_PATCH(irq_enable):
- return patch_internal(VMI_CALL_EnableInterrupts, len, insns);
+ return patch_internal(VMI_CALL_EnableInterrupts, len,
+ insns, eip);
case PARAVIRT_PATCH(restore_fl):
- return patch_internal(VMI_CALL_SetInterruptMask, len, insns);
+ return patch_internal(VMI_CALL_SetInterruptMask, len,
+ insns, eip);
case PARAVIRT_PATCH(save_fl):
- return patch_internal(VMI_CALL_GetInterruptMask, len, insns);
+ return patch_internal(VMI_CALL_GetInterruptMask, len,
+ insns, eip);
case PARAVIRT_PATCH(iret):
- return patch_internal(VMI_CALL_IRET, len, insns);
+ return patch_internal(VMI_CALL_IRET, len, insns, eip);
case PARAVIRT_PATCH(irq_enable_sysexit):
- return patch_internal(VMI_CALL_SYSEXIT, len, insns);
+ return patch_internal(VMI_CALL_SYSEXIT, len, insns, eip);
default:
break;
}
struct page *p;
/* High level code is not ready for clflush yet */
- if (cpu_has_clflush) {
+ if (0 && cpu_has_clflush) {
list_for_each_entry (p, lh, lru)
cache_flush_page(p);
} else if (boot_cpu_data.x86_model >= 4)
if (!dev->msi_enabled && pcibios_disable_irq)
pcibios_disable_irq(dev);
}
+
+struct pci_bus *pci_scan_bus_with_sysdata(int busno)
+{
+ struct pci_bus *bus = NULL;
+ struct pci_sysdata *sd;
+
+ /*
+ * Allocate per-root-bus (not per bus) arch-specific data.
+ * TODO: leak; this memory is never freed.
+ * It's arguable whether it's worth the trouble to care.
+ */
+ sd = kzalloc(sizeof(*sd), GFP_KERNEL);
+ if (!sd) {
+ printk(KERN_ERR "PCI: OOM, skipping PCI bus %02x\n", busno);
+ return NULL;
+ }
+ sd->node = -1;
+ bus = pci_scan_bus(busno, &pci_root_ops, sd);
+ if (!bus)
+ kfree(sd);
+
+ return bus;
+}
pci_read_config_byte(d, reg++, &subb);
DBG("i450NX PXB %d: %02x/%02x/%02x\n", pxb, busno, suba, subb);
if (busno)
- pci_scan_bus(busno, &pci_root_ops, NULL); /* Bus A */
+ pci_scan_bus_with_sysdata(busno); /* Bus A */
if (suba < subb)
- pci_scan_bus(suba+1, &pci_root_ops, NULL); /* Bus B */
+ pci_scan_bus_with_sysdata(suba+1); /* Bus B */
}
pcibios_last_bus = -1;
}
u8 busno;
pci_read_config_byte(d, 0x4a, &busno);
printk(KERN_INFO "PCI: i440KX/GX host bridge %s: secondary bus %02x\n", pci_name(d), busno);
- pci_scan_bus(busno, &pci_root_ops, NULL);
+ pci_scan_bus_with_sysdata(busno);
pcibios_last_bus = -1;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454GX, pci_fixup_i450gx);
for(i = 1; i < 256; i++) {
if (!busmap[i] || pci_find_bus(0, i))
continue;
- if (pci_scan_bus(i, &pci_root_ops, NULL))
- printk(KERN_INFO "PCI: Discovered primary peer bus %02x [IRQ]\n", i);
+ if (pci_scan_bus_with_sysdata(i))
+ printk(KERN_INFO "PCI: Discovered primary peer "
+ "bus %02x [IRQ]\n", i);
}
pcibios_last_bus = -1;
}
l != 0x0000 && l != 0xffff) {
DBG("Found device at %02x:%02x [%04x]\n", n, devfn, l);
printk(KERN_INFO "PCI: Discovered peer bus %02x\n", n);
- pci_scan_bus(n, &pci_root_ops, NULL);
+ pci_scan_bus_with_sysdata(n);
break;
}
}
switch (len) {
case 1:
- *value = readb(mmcfg_virt_addr + reg);
+ *value = mmio_config_readb(mmcfg_virt_addr + reg);
break;
case 2:
- *value = readw(mmcfg_virt_addr + reg);
+ *value = mmio_config_readw(mmcfg_virt_addr + reg);
break;
case 4:
- *value = readl(mmcfg_virt_addr + reg);
+ *value = mmio_config_readl(mmcfg_virt_addr + reg);
break;
}
-
spin_unlock_irqrestore(&pci_config_lock, flags);
return 0;
switch (len) {
case 1:
- writeb(value, mmcfg_virt_addr + reg);
+ mmio_config_writeb(mmcfg_virt_addr, value);
break;
case 2:
- writew(value, mmcfg_virt_addr + reg);
+ mmio_config_writew(mmcfg_virt_addr, value);
break;
case 4:
- writel(value, mmcfg_virt_addr + reg);
+ mmio_config_writel(mmcfg_virt_addr, value);
break;
}
-
spin_unlock_irqrestore(&pci_config_lock, flags);
return 0;
pci_read_config_byte(d, reg++, &suba);
pci_read_config_byte(d, reg++, &subb);
DBG("i450NX PXB %d: %02x/%02x/%02x\n", pxb, busno, suba, subb);
- if (busno)
- pci_scan_bus(QUADLOCAL2BUS(quad,busno), &pci_root_ops, NULL); /* Bus A */
- if (suba < subb)
- pci_scan_bus(QUADLOCAL2BUS(quad,suba+1), &pci_root_ops, NULL); /* Bus B */
+ if (busno) {
+ /* Bus A */
+ pci_scan_bus_with_sysdata(QUADLOCAL2BUS(quad, busno));
+ }
+ if (suba < subb) {
+ /* Bus B */
+ pci_scan_bus_with_sysdata(QUADLOCAL2BUS(quad, suba+1));
+ }
}
pcibios_last_bus = -1;
}
continue;
printk("Scanning PCI bus %d for quad %d\n",
QUADLOCAL2BUS(quad,0), quad);
- pci_scan_bus(QUADLOCAL2BUS(quad,0),
- &pci_root_ops, NULL);
+ pci_scan_bus_with_sysdata(QUADLOCAL2BUS(quad, 0));
}
return 0;
}
extern int __init pci_mmcfg_arch_reachable(unsigned int seg, unsigned int bus,
unsigned int devfn);
extern int __init pci_mmcfg_arch_init(void);
+
+/*
+ * AMD Fam10h CPUs are buggy, and cannot access MMIO config space
+ * on their northbrige except through the * %eax register. As such, you MUST
+ * NOT use normal IOMEM accesses, you need to only use the magic mmio-config
+ * accessor functions.
+ * In fact just use pci_config_*, nothing else please.
+ */
+static inline unsigned char mmio_config_readb(void __iomem *pos)
+{
+ u8 val;
+ asm volatile("movb (%1),%%al" : "=a" (val) : "r" (pos));
+ return val;
+}
+
+static inline unsigned short mmio_config_readw(void __iomem *pos)
+{
+ u16 val;
+ asm volatile("movw (%1),%%ax" : "=a" (val) : "r" (pos));
+ return val;
+}
+
+static inline unsigned int mmio_config_readl(void __iomem *pos)
+{
+ u32 val;
+ asm volatile("movl (%1),%%eax" : "=a" (val) : "r" (pos));
+ return val;
+}
+
+static inline void mmio_config_writeb(void __iomem *pos, u8 val)
+{
+ asm volatile("movb %%al,(%1)" :: "a" (val), "r" (pos) : "memory");
+}
+
+static inline void mmio_config_writew(void __iomem *pos, u16 val)
+{
+ asm volatile("movw %%ax,(%1)" :: "a" (val), "r" (pos) : "memory");
+}
+
+static inline void mmio_config_writel(void __iomem *pos, u32 val)
+{
+ asm volatile("movl %%eax,(%1)" :: "a" (val), "r" (pos) : "memory");
+}
"bridge B (PIIX4) bus: %u\n", pci_bus1, pci_bus0);
raw_pci_ops = &pci_direct_conf1;
- pci_scan_bus(pci_bus0, &pci_root_ops, NULL);
- pci_scan_bus(pci_bus1, &pci_root_ops, NULL);
+ pci_scan_bus_with_sysdata(pci_bus0);
+ pci_scan_bus_with_sysdata(pci_bus1);
pci_fixup_irqs(visws_swizzle, visws_map_irq);
pcibios_resource_survey();
return 0;
}
}
-static unsigned xen_patch(u8 type, u16 clobbers, void *insns, unsigned len)
+static unsigned xen_patch(u8 type, u16 clobbers, void *insnbuf,
+ unsigned long addr, unsigned len)
{
char *start, *end, *reloc;
unsigned ret;
if (start == NULL || (end-start) > len)
goto default_patch;
- ret = paravirt_patch_insns(insns, len, start, end);
+ ret = paravirt_patch_insns(insnbuf, len, start, end);
/* Note: because reloc is assigned from something that
appears to be an array, gcc assumes it's non-null,
end. */
if (reloc > start && reloc < end) {
int reloc_off = reloc - start;
- long *relocp = (long *)(insns + reloc_off);
- long delta = start - (char *)insns;
+ long *relocp = (long *)(insnbuf + reloc_off);
+ long delta = start - (char *)addr;
*relocp += delta;
}
default_patch:
default:
- ret = paravirt_patch_default(type, clobbers, insns, len);
+ ret = paravirt_patch_default(type, clobbers, insnbuf,
+ addr, len);
break;
}
movl %eax, %ds
movl %eax, %es
movl %eax, %ss
+ movl %eax, %fs
+ movl %eax, %gs
+ lldt %ax
+ movl $0x20, %eax
+ ltr %ax
/* Compute the decompressed kernel start address. It is where
* we were loaded at aligned to a 2M boundary. %rbp contains the
.quad 0x0000000000000000 /* NULL descriptor */
.quad 0x00af9a000000ffff /* __KERNEL_CS */
.quad 0x00cf92000000ffff /* __KERNEL_DS */
+ .quad 0x0080890000000000 /* TS descriptor */
+ .quad 0x0000000000000000 /* TS continued */
gdt_end:
.bss
/* Stack for uncompression */
/* wait for irq slice */
if (hpet_address && hpet_use_timer) {
- int trigger = hpet_readl(HPET_T0_CMP);
- while (hpet_readl(HPET_COUNTER) >= trigger)
- /* do nothing */ ;
- while (hpet_readl(HPET_COUNTER) < trigger)
+ u32 trigger = hpet_readl(HPET_T0_CMP);
+ while (hpet_readl(HPET_T0_CMP) == trigger)
/* do nothing */ ;
} else {
int c1, c2;
pdev = to_pci_dev(dev);
- /* is the device behind a bridge? */
- if (unlikely(pdev->bus->parent))
- pbus = pdev->bus->parent;
- else
- pbus = pdev->bus;
+ pbus = pdev->bus;
+
+ /* is the device behind a bridge? Look for the root bus */
+ while (pbus->parent)
+ pbus = pbus->parent;
tbl = pci_iommu(pbus);
- BUG_ON(pdev->bus->parent &&
- (tbl->it_busno != pdev->bus->parent->number));
+ BUG_ON(tbl && (tbl->it_busno != pbus->number));
return tbl;
}
/* When clflush is available always use it because it is
much cheaper than WBINVD. */
- if (!cpu_has_clflush)
+ /* clflush is still broken. Disable for now. */
+ if (1 || !cpu_has_clflush)
asm volatile("wbinvd" ::: "memory");
else list_for_each_entry(pg, l, lru) {
void *adr = page_address(pg);
switch (len) {
case 1:
- *value = readb(addr + reg);
+ *value = mmio_config_readb(addr + reg);
break;
case 2:
- *value = readw(addr + reg);
+ *value = mmio_config_readw(addr + reg);
break;
case 4:
- *value = readl(addr + reg);
+ *value = mmio_config_readl(addr + reg);
break;
}
switch (len) {
case 1:
- writeb(value, addr + reg);
+ mmio_config_writeb(addr + reg, value);
break;
case 2:
- writew(value, addr + reg);
+ mmio_config_writew(addr + reg, value);
break;
case 4:
- writel(value, addr + reg);
+ mmio_config_writel(addr + reg, value);
break;
}
bio->bi_sector += p->start_sect;
bio->bi_bdev = bdev->bd_contains;
+
+ blk_add_trace_remap(bdev_get_queue(bio->bi_bdev), bio,
+ bdev->bd_dev, bio->bi_sector,
+ bio->bi_sector - p->start_sect);
}
}
return (AE_CTRL_TERMINATE);
}
-ACPI_EXPORT_SYMBOL(acpi_rs_match_vendor_resource)
-
/*******************************************************************************
*
* FUNCTION: acpi_walk_resources
{
ReadCapdata_struct *buf;
int return_code;
- buf = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
- if (buf == NULL) {
+
+ buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
+ if (!buf) {
printk(KERN_WARNING "cciss: out of memory\n");
return;
}
- memset(buf, 0, sizeof(ReadCapdata_struct));
+
if (withirq)
return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
ctlr, buf, sizeof(ReadCapdata_struct),
printk(KERN_INFO " blocks= %llu block_size= %d\n",
(unsigned long long)*total_size+1, *block_size);
kfree(buf);
- return;
}
static void
{
ReadCapdata_struct_16 *buf;
int return_code;
- buf = kmalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL);
- if (buf == NULL) {
+
+ buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL);
+ if (!buf) {
printk(KERN_WARNING "cciss: out of memory\n");
return;
}
- memset(buf, 0, sizeof(ReadCapdata_struct_16));
+
if (withirq) {
return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16,
ctlr, buf, sizeof(ReadCapdata_struct_16),
printk(KERN_INFO " blocks= %llu block_size= %d\n",
(unsigned long long)*total_size+1, *block_size);
kfree(buf);
- return;
}
static int cciss_revalidate(struct gendisk *disk)
goto Enomem2;
}
- hba[i]->cmd_pool = (cmdlist_t *)pci_alloc_consistent(
+ hba[i]->cmd_pool = pci_alloc_consistent(
hba[i]->pci_dev, NR_CMDS * sizeof(cmdlist_t),
&(hba[i]->cmd_pool_dhandle));
- hba[i]->cmd_pool_bits = kmalloc(
- ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long),
+ hba[i]->cmd_pool_bits = kcalloc(
+ (NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG, sizeof(unsigned long),
GFP_KERNEL);
if (!hba[i]->cmd_pool_bits || !hba[i]->cmd_pool)
goto Enomem1;
memset(hba[i]->cmd_pool, 0, NR_CMDS * sizeof(cmdlist_t));
- memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
printk(KERN_INFO "cpqarray: Finding drives on %s",
hba[i]->devname);
info_p->log_drv_map = 0;
- id_ldrive = kmalloc(sizeof(id_log_drv_t), GFP_KERNEL);
- if(id_ldrive == NULL)
- {
+ id_ldrive = kzalloc(sizeof(id_log_drv_t), GFP_KERNEL);
+ if (!id_ldrive) {
printk( KERN_ERR "cpqarray: out of memory.\n");
- return;
+ goto err_0;
}
- id_ctlr_buf = kmalloc(sizeof(id_ctlr_t), GFP_KERNEL);
- if(id_ctlr_buf == NULL)
- {
- kfree(id_ldrive);
+ id_ctlr_buf = kzalloc(sizeof(id_ctlr_t), GFP_KERNEL);
+ if (!id_ctlr_buf) {
printk( KERN_ERR "cpqarray: out of memory.\n");
- return;
+ goto err_1;
}
- id_lstatus_buf = kmalloc(sizeof(sense_log_drv_stat_t), GFP_KERNEL);
- if(id_lstatus_buf == NULL)
- {
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
+ id_lstatus_buf = kzalloc(sizeof(sense_log_drv_stat_t), GFP_KERNEL);
+ if (!id_lstatus_buf) {
printk( KERN_ERR "cpqarray: out of memory.\n");
- return;
+ goto err_2;
}
- sense_config_buf = kmalloc(sizeof(config_t), GFP_KERNEL);
- if(sense_config_buf == NULL)
- {
- kfree(id_lstatus_buf);
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
+ sense_config_buf = kzalloc(sizeof(config_t), GFP_KERNEL);
+ if (!sense_config_buf) {
printk( KERN_ERR "cpqarray: out of memory.\n");
- return;
+ goto err_3;
}
- memset(id_ldrive, 0, sizeof(id_log_drv_t));
- memset(id_ctlr_buf, 0, sizeof(id_ctlr_t));
- memset(id_lstatus_buf, 0, sizeof(sense_log_drv_stat_t));
- memset(sense_config_buf, 0, sizeof(config_t));
-
info_p->phys_drives = 0;
info_p->log_drv_map = 0;
info_p->drv_assign_map = 0;
* so the idastubopen will fail on all logical drives
* on the controller.
*/
- /* Free all the buffers and return */
printk(KERN_ERR "cpqarray: error sending ID controller\n");
- kfree(sense_config_buf);
- kfree(id_lstatus_buf);
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
- return;
+ goto err_4;
}
info_p->log_drives = id_ctlr_buf->nr_drvs;
" failed to report status of logical drive %d\n"
"Access to this controller has been disabled\n",
ctlr, log_unit);
- /* Free all the buffers and return */
- kfree(sense_config_buf);
- kfree(id_lstatus_buf);
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
- return;
+ goto err_4;
}
/*
Make sure the logical drive is configured
sizeof(config_t), 0, 0, log_unit);
if (ret_code == IO_ERROR) {
info_p->log_drv_map = 0;
- /* Free all the buffers and return */
printk(KERN_ERR "cpqarray: error sending sense config\n");
- kfree(sense_config_buf);
- kfree(id_lstatus_buf);
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
- return;
-
+ goto err_4;
}
info_p->phys_drives =
log_index = log_index + 1;
} /* end of if logical drive configured */
} /* end of for log_unit */
+
+ /* Free all the buffers and return */
+err_4:
kfree(sense_config_buf);
- kfree(id_ldrive);
+err_3:
kfree(id_lstatus_buf);
+err_2:
kfree(id_ctlr_buf);
+err_1:
+ kfree(id_ldrive);
+err_0:
return;
-
}
static void __exit cpqarray_exit(void)
#include <linux/dma-mapping.h>
#include <linux/completion.h>
#include <linux/device.h>
-#include <linux/kernel.h>
#include <asm/uaccess.h>
#include <asm/vio.h>
return 0;
}
-static int ace_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+static int ace_getgeo(struct block_device *bdev, struct hd_geometry *geo)
{
- struct ace_device *ace = inode->i_bdev->bd_disk->private_data;
- struct hd_geometry __user *geo = (struct hd_geometry __user *)arg;
- struct hd_geometry g;
- dev_dbg(ace->dev, "ace_ioctl()\n");
-
- switch (cmd) {
- case HDIO_GETGEO:
- g.heads = ace->cf_id.heads;
- g.sectors = ace->cf_id.sectors;
- g.cylinders = ace->cf_id.cyls;
- g.start = 0;
- return copy_to_user(geo, &g, sizeof(g)) ? -EFAULT : 0;
+ struct ace_device *ace = bdev->bd_disk->private_data;
- default:
- return -ENOTTY;
- }
- return -ENOTTY;
+ dev_dbg(ace->dev, "ace_getgeo()\n");
+
+ geo->heads = ace->cf_id.heads;
+ geo->sectors = ace->cf_id.sectors;
+ geo->cylinders = ace->cf_id.cyls;
+
+ return 0;
}
static struct block_device_operations ace_fops = {
.release = ace_release,
.media_changed = ace_media_changed,
.revalidate_disk = ace_revalidate_disk,
- .ioctl = ace_ioctl,
+ .getgeo = ace_getgeo,
};
/* --------------------------------------------------------------------
#include <linux/err.h>
#include <linux/init.h>
#include <linux/lguest_bus.h>
+#include <asm/paravirt.h>
#include "hvc_console.h"
/*D:340 This is our single console input buffer, with associated "struct
{
struct cm4000_dev *dev;
struct pcmcia_device *link;
- int rc, minor = iminor(inode);
+ int minor = iminor(inode);
if (minor >= CM4000_MAX_DEV)
return -ENODEV;
start_monitor(dev);
link->open = 1; /* only one open per device */
- rc = 0;
DEBUGP(2, dev, "<- cmm_open\n");
return nonseekable_open(inode, filp);
static void cm4000_release(struct pcmcia_device *link)
{
- cmm_cm4000_release(link->priv); /* delay release until device closed */
+ cmm_cm4000_release(link); /* delay release until device closed */
pcmcia_disable_device(link);
}
static void reader_release(struct pcmcia_device *link)
{
- cm4040_reader_release(link->priv);
+ cm4040_reader_release(link);
pcmcia_disable_device(link);
}
}
/**
- * tty_buffer_flush - flush full tty buffers
+ * __tty_buffer_flush - flush full tty buffers
* @tty: tty to flush
*
- * flush all the buffers containing receive data
+ * flush all the buffers containing receive data. Caller must
+ * hold the buffer lock and must have ensured no parallel flush to
+ * ldisc is running.
*
- * Locking: none
+ * Locking: Caller must hold tty->buf.lock
*/
-static void tty_buffer_flush(struct tty_struct *tty)
+static void __tty_buffer_flush(struct tty_struct *tty)
{
struct tty_buffer *thead;
- unsigned long flags;
- spin_lock_irqsave(&tty->buf.lock, flags);
while((thead = tty->buf.head) != NULL) {
tty->buf.head = thead->next;
tty_buffer_free(tty, thead);
}
tty->buf.tail = NULL;
+}
+
+/**
+ * tty_buffer_flush - flush full tty buffers
+ * @tty: tty to flush
+ *
+ * flush all the buffers containing receive data. If the buffer is
+ * being processed by flush_to_ldisc then we defer the processing
+ * to that function
+ *
+ * Locking: none
+ */
+
+static void tty_buffer_flush(struct tty_struct *tty)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&tty->buf.lock, flags);
+
+ /* If the data is being pushed to the tty layer then we can't
+ process it here. Instead set a flag and the flush_to_ldisc
+ path will process the flush request before it exits */
+ if (test_bit(TTY_FLUSHING, &tty->flags)) {
+ set_bit(TTY_FLUSHPENDING, &tty->flags);
+ spin_unlock_irqrestore(&tty->buf.lock, flags);
+ wait_event(tty->read_wait,
+ test_bit(TTY_FLUSHPENDING, &tty->flags) == 0);
+ return;
+ } else
+ __tty_buffer_flush(tty);
spin_unlock_irqrestore(&tty->buf.lock, flags);
}
return;
spin_lock_irqsave(&tty->buf.lock, flags);
+ set_bit(TTY_FLUSHING, &tty->flags); /* So we know a flush is running */
head = tty->buf.head;
if (head != NULL) {
tty->buf.head = NULL;
tty_buffer_free(tty, tbuf);
continue;
}
+ /* Ldisc or user is trying to flush the buffers
+ we are feeding to the ldisc, stop feeding the
+ line discipline as we want to empty the queue */
+ if (test_bit(TTY_FLUSHPENDING, &tty->flags))
+ break;
if (!tty->receive_room) {
schedule_delayed_work(&tty->buf.work, 1);
break;
disc->receive_buf(tty, char_buf, flag_buf, count);
spin_lock_irqsave(&tty->buf.lock, flags);
}
+ /* Restore the queue head */
tty->buf.head = head;
}
+ /* We may have a deferred request to flush the input buffer,
+ if so pull the chain under the lock and empty the queue */
+ if (test_bit(TTY_FLUSHPENDING, &tty->flags)) {
+ __tty_buffer_flush(tty);
+ clear_bit(TTY_FLUSHPENDING, &tty->flags);
+ wake_up(&tty->read_wait);
+ }
+ clear_bit(TTY_FLUSHING, &tty->flags);
spin_unlock_irqrestore(&tty->buf.lock, flags);
tty_ldisc_deref(disc);
/* Now our patch routine is fairly simple (based on the native one in
* paravirt.c). If we have a replacement, we copy it in and return how much of
* the available space we used. */
-static unsigned lguest_patch(u8 type, u16 clobber, void *insns, unsigned len)
+static unsigned lguest_patch(u8 type, u16 clobber, void *ibuf,
+ unsigned long addr, unsigned len)
{
unsigned int insn_len;
/* Don't do anything special if we don't have a replacement */
if (type >= ARRAY_SIZE(lguest_insns) || !lguest_insns[type].start)
- return paravirt_patch_default(type, clobber, insns, len);
+ return paravirt_patch_default(type, clobber, ibuf, addr, len);
insn_len = lguest_insns[type].end - lguest_insns[type].start;
/* Similarly if we can't fit replacement (shouldn't happen, but let's
* be thorough). */
if (len < insn_len)
- return paravirt_patch_default(type, clobber, insns, len);
+ return paravirt_patch_default(type, clobber, ibuf, addr, len);
/* Copy in our instructions. */
- memcpy(insns, lguest_insns[type].start, insn_len);
+ memcpy(ibuf, lguest_insns[type].start, insn_len);
return insn_len;
}
#include <linux/bootmem.h>
#include <linux/lguest_bus.h>
#include <asm/io.h>
+#include <asm/paravirt.h>
static ssize_t type_show(struct device *_dev,
struct device_attribute *attr, char *buf)
/* the bio has been remapped so dispatch it */
blk_add_trace_remap(bdev_get_queue(clone->bi_bdev), clone,
- tio->io->bio->bi_bdev->bd_dev, sector,
- clone->bi_sector);
+ tio->io->bio->bi_bdev->bd_dev,
+ clone->bi_sector, sector);
generic_make_request(clone);
} else if (r < 0 || r == DM_MAPIO_REQUEUE) {
#include <linux/device.h>
#include <linux/fs.h>
+#include <linux/mm.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
unsigned nsecs; /* (clock cycle time)/2 */
- u32 sysclk;
+ u32 spibrg; /* SPIBRG input clock */
u32 rx_shift; /* RX data reg shift when in qe mode */
u32 tx_shift; /* TX data reg shift when in qe mode */
if (value == BITBANG_CS_ACTIVE) {
u32 regval = mpc83xx_spi_read_reg(&mpc83xx_spi->base->mode);
u32 len = spi->bits_per_word;
+ u8 pm;
+
if (len == 32)
len = 0;
else
regval |= SPMODE_LEN(len);
- if ((mpc83xx_spi->sysclk / spi->max_speed_hz) >= 64) {
- u8 pm = mpc83xx_spi->sysclk / (spi->max_speed_hz * 64);
+ if ((mpc83xx_spi->spibrg / spi->max_speed_hz) >= 64) {
+ pm = mpc83xx_spi->spibrg / (spi->max_speed_hz * 64) - 1;
if (pm > 0x0f) {
- printk(KERN_WARNING "MPC83xx SPI: SPICLK can't be less then a SYSCLK/1024!\n"
- "Requested SPICLK is %d Hz. Will use %d Hz instead.\n",
- spi->max_speed_hz, mpc83xx_spi->sysclk / 1024);
+ dev_err(&spi->dev, "Requested speed is too "
+ "low: %d Hz. Will use %d Hz instead.\n",
+ spi->max_speed_hz,
+ mpc83xx_spi->spibrg / 1024);
pm = 0x0f;
}
regval |= SPMODE_PM(pm) | SPMODE_DIV16;
} else {
- u8 pm = mpc83xx_spi->sysclk / (spi->max_speed_hz * 4);
+ pm = mpc83xx_spi->spibrg / (spi->max_speed_hz * 4);
+ if (pm)
+ pm--;
regval |= SPMODE_PM(pm);
}
mpc83xx_spi->bitbang.chipselect = mpc83xx_spi_chipselect;
mpc83xx_spi->bitbang.setup_transfer = mpc83xx_spi_setup_transfer;
mpc83xx_spi->bitbang.txrx_bufs = mpc83xx_spi_bufs;
- mpc83xx_spi->sysclk = pdata->sysclk;
mpc83xx_spi->activate_cs = pdata->activate_cs;
mpc83xx_spi->deactivate_cs = pdata->deactivate_cs;
mpc83xx_spi->qe_mode = pdata->qe_mode;
mpc83xx_spi->get_rx = mpc83xx_spi_rx_buf_u8;
mpc83xx_spi->get_tx = mpc83xx_spi_tx_buf_u8;
+ if (mpc83xx_spi->qe_mode)
+ mpc83xx_spi->spibrg = pdata->sysclk / 2;
+ else
+ mpc83xx_spi->spibrg = pdata->sysclk;
+
mpc83xx_spi->rx_shift = 0;
mpc83xx_spi->tx_shift = 0;
if (mpc83xx_spi->qe_mode) {
if (u_tmp->rx_buf) {
k_tmp->rx_buf = buf;
- if (!access_ok(VERIFY_WRITE, u_tmp->rx_buf, u_tmp->len))
+ if (!access_ok(VERIFY_WRITE, (u8 __user *)
+ (ptrdiff_t) u_tmp->rx_buf,
+ u_tmp->len))
goto done;
}
if (u_tmp->tx_buf) {
static int fbcon_is_default = 1;
static int fbcon_has_exited;
static int primary_device = -1;
+
+#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
static int map_override;
+static inline void fbcon_map_override(void)
+{
+ map_override = 1;
+}
+#else
+static inline void fbcon_map_override(void)
+{
+}
+#endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */
+
/* font data */
static char fontname[40];
(options[j++]-'0') % FB_MAX;
}
- map_override = 1;
+ fbcon_map_override();
}
return 1;
tmp |= M1064_XPIXCLKCTRL_PLL_UP;
}
matroxfb_DAC_out(PMINFO M1064_XPIXCLKCTRL, tmp);
-#ifdef __powerpc__
- /* This is necessary to avoid jitter on PowerPC
- * (OpenFirmware) systems, but apparently
- * introduces jitter, at least on a x86-64
- * using DVI.
- * A simple workaround is disable for non-PPC.
- */
- matroxfb_DAC_out(PMINFO M1064_XDVICLKCTRL, 0);
-#endif /* __powerpc__ */
- matroxfb_DAC_out(PMINFO M1064_XPWRCTRL, xpwrctrl);
+ /* DVI PLL preferred for frequencies up to
+ panel link max, standard PLL otherwise */
+ if (fout >= MINFO->max_pixel_clock_panellink)
+ tmp = 0;
+ else tmp =
+ M1064_XDVICLKCTRL_DVIDATAPATHSEL |
+ M1064_XDVICLKCTRL_C1DVICLKSEL |
+ M1064_XDVICLKCTRL_C1DVICLKEN |
+ M1064_XDVICLKCTRL_DVILOOPCTL |
+ M1064_XDVICLKCTRL_P1LOOPBWDTCTL;
+ matroxfb_DAC_out(PMINFO M1064_XDVICLKCTRL,tmp);
+ matroxfb_DAC_out(PMINFO M1064_XPWRCTRL,
+ xpwrctrl);
matroxfb_DAC_unlock_irqrestore(flags);
}
#define M1064_XCURCTRL_3COLOR 0x01 /* transparent, 0, 1, 2 */
#define M1064_XCURCTRL_XGA 0x02 /* 0, 1, transparent, complement */
#define M1064_XCURCTRL_XWIN 0x03 /* transparent, transparent, 0, 1 */
+ /* drive DVI by standard(0)/DVI(1) PLL */
+ /* if set(1), C?DVICLKEN and C?DVICLKSEL must be set(1) */
+#define M1064_XDVICLKCTRL_DVIDATAPATHSEL 0x01
+ /* drive CRTC1 by standard(0)/DVI(1) PLL */
+#define M1064_XDVICLKCTRL_C1DVICLKSEL 0x02
+ /* drive CRTC2 by standard(0)/DVI(1) PLL */
+#define M1064_XDVICLKCTRL_C2DVICLKSEL 0x04
+ /* pixel clock allowed to(0)/blocked from(1) driving CRTC1 */
+#define M1064_XDVICLKCTRL_C1DVICLKEN 0x08
+ /* DVI PLL loop filter bandwidth selection bits */
+#define M1064_XDVICLKCTRL_DVILOOPCTL 0x30
+ /* CRTC2 pixel clock allowed to(0)/blocked from(1) driving CRTC2 */
+#define M1064_XDVICLKCTRL_C2DVICLKEN 0x40
+ /* P1PLL loop filter bandwith selection */
+#define M1064_XDVICLKCTRL_P1LOOPBWDTCTL 0x80
#define M1064_XCURCOL0RED 0x08
#define M1064_XCURCOL0GREEN 0x09
#define M1064_XCURCOL0BLUE 0x0A
} mmio;
unsigned int max_pixel_clock;
+ unsigned int max_pixel_clock_panellink;
struct matrox_switch* hw_switch;
MINFO->values.reg.mctlwtst_core = (MINFO->values.reg.mctlwtst & ~7) |
wtst_xlat[MINFO->values.reg.mctlwtst & 7];
}
+ MINFO->max_pixel_clock_panellink = bd->pins[47] * 4000;
return 0;
}
#define DISP_DIWCONF (DISP_BASE + 0xe8)
#define DISP_DIWHSTRT (DISP_BASE + 0xec)
#define DISP_DIWVSTRT (DISP_BASE + 0xf0)
+#define DISP_PIXDEPTH (DISP_BASE + 0x108)
/* Pixel clocks, one for TV output, doubled for VGA output */
#define TV_CLK 74239
unsigned char is_lowres; /* Is horizontal pixel-doubling enabled? */
unsigned long mmio_base; /* MMIO base */
+ u32 palette[16];
} *currentpar;
static struct fb_info *fb_info;
/* bits per pixel */
fb_writel(fb_readl(DISP_DIWMODE) | (--bytesperpixel << 2), DISP_DIWMODE);
+ fb_writel(bytesperpixel << 2, DISP_PIXDEPTH);
/* video enable, color sync, interlace,
* hsync and vsync polarity (currently unused) */
fb_info->fbops = &pvr2fb_ops;
fb_info->fix = pvr2_fix;
fb_info->par = currentpar;
- fb_info->pseudo_palette = (void *)(fb_info->par + 1);
+ fb_info->pseudo_palette = currentpar->palette;
fb_info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
if (video_output == VO_VGA)
if (register_framebuffer(fb_info) < 0)
goto out_err;
+ /*Must write PIXDEPTH to register before anything is displayed - so force init */
+ pvr2_init_display(fb_info);
modememused = get_line_length(fb_info->var.xres_virtual,
fb_info->var.bits_per_pixel);
#endif
size = sizeof(struct fb_info) + sizeof(struct pvr2fb_par) + 16 * sizeof(u32);
- fb_info = kzalloc(size, GFP_KERNEL);
+ fb_info = framebuffer_alloc(sizeof(struct pvr2fb_par), NULL);
+
if (!fb_info) {
printk(KERN_ERR "Failed to allocate memory for fb_info\n");
return -ENOMEM;
}
- currentpar = (struct pvr2fb_par *)(fb_info + 1);
+ currentpar = fb_info->par;
for (i = 0; i < ARRAY_SIZE(board_driver); i++) {
struct pvr2_board *pvr_board = board_driver + i;
if (ret != 0) {
printk(KERN_ERR "pvr2fb: Failed init of %s device\n",
pvr_board->name);
- kfree(fb_info);
+ framebuffer_release(fb_info);
break;
}
}
#endif
unregister_framebuffer(fb_info);
- kfree(fb_info);
+ framebuffer_release(fb_info);
}
module_init(pvr2fb_init);
/* only supported cards are allowed */
switch (fb->id) {
case CRT_ID_VISUALIZE_EG:
- /* look for a double buffering device like e.g. the
- "INTERNAL_EG_DX1024" in the RDI precisionbook laptop
- which won't work. The same device in non-double
- buffering mode returns "INTERNAL_EG_X1024". */
- if (strstr(sti->outptr.dev_name, "EG_DX")) {
- printk(KERN_WARNING
- "stifb: ignoring '%s'. Disable double buffering in IPL menu.\n",
+ /* Visualize cards can run either in "double buffer" or
+ "standard" mode. Depending on the mode, the card reports
+ a different device name, e.g. "INTERNAL_EG_DX1024" in double
+ buffer mode and "INTERNAL_EG_X1024" in standard mode.
+ Since this driver only supports standard mode, we check
+ if the device name contains the string "DX" and tell the
+ user how to reconfigure the card. */
+ if (strstr(sti->outptr.dev_name, "DX")) {
+ printk(KERN_WARNING "WARNING: stifb framebuffer driver does not "
+ "support '%s' in double-buffer mode.\n"
+ KERN_WARNING "WARNING: Please disable the double-buffer mode "
+ "in IPL menu (the PARISC-BIOS).\n",
sti->outptr.dev_name);
goto out_err0;
}
dio->get_block = get_block;
dio->end_io = end_io;
dio->map_bh.b_private = NULL;
+ dio->map_bh.b_state = 0;
dio->final_block_in_bio = -1;
dio->next_block_for_io = -1;
ecryptfs_printk(KERN_DEBUG, "Is a symlink; returning\n");
goto out;
}
+ if (special_file(lower_inode->i_mode)) {
+ ecryptfs_printk(KERN_DEBUG, "Is a special file; returning\n");
+ goto out;
+ }
if (!nd) {
ecryptfs_printk(KERN_DEBUG, "We have a NULL nd, just leave"
"as we *think* we are about to unlink\n");
return rc;
}
+static void do_sysfs_unregistration(void)
+{
+ sysfs_remove_file(&ecryptfs_subsys.kobj,
+ &sysfs_attr_version.attr);
+ sysfs_remove_file(&ecryptfs_subsys.kobj,
+ &sysfs_attr_version_str.attr);
+ subsystem_unregister(&ecryptfs_subsys);
+}
+
static int __init ecryptfs_init(void)
{
int rc;
if (rc) {
ecryptfs_printk(KERN_ERR, "Failure occured while attempting to "
"initialize the eCryptfs netlink socket\n");
+ do_sysfs_unregistration();
+ unregister_filesystem(&ecryptfs_fs_type);
+ ecryptfs_free_kmem_caches();
}
out:
return rc;
static void __exit ecryptfs_exit(void)
{
- sysfs_remove_file(&ecryptfs_subsys.kobj,
- &sysfs_attr_version.attr);
- sysfs_remove_file(&ecryptfs_subsys.kobj,
- &sysfs_attr_version_str.attr);
- subsystem_unregister(&ecryptfs_subsys);
+ do_sysfs_unregistration();
ecryptfs_release_messaging(ecryptfs_transport);
unregister_filesystem(&ecryptfs_fs_type);
ecryptfs_free_kmem_caches();
{
int status;
struct buffer_head *last_eb_bh = NULL;
- struct buffer_head *bh = NULL;
struct ocfs2_insert_type insert = {0, };
struct ocfs2_extent_rec rec;
ocfs2_extent_map_insert_rec(inode, &rec);
bail:
- if (bh)
- brelse(bh);
-
if (last_eb_bh)
brelse(last_eb_bh);
struct o2net_node *nn = o2net_nn_from_num(sc->sc_node->nd_num);
ssize_t ret;
-
- mutex_lock(&sc->sc_send_lock);
- ret = sc->sc_sock->ops->sendpage(sc->sc_sock,
- virt_to_page(kmalloced_virt),
- (long)kmalloced_virt & ~PAGE_MASK,
- size, MSG_DONTWAIT);
- mutex_unlock(&sc->sc_send_lock);
- if (ret != size) {
+ while (1) {
+ mutex_lock(&sc->sc_send_lock);
+ ret = sc->sc_sock->ops->sendpage(sc->sc_sock,
+ virt_to_page(kmalloced_virt),
+ (long)kmalloced_virt & ~PAGE_MASK,
+ size, MSG_DONTWAIT);
+ mutex_unlock(&sc->sc_send_lock);
+ if (ret == size)
+ break;
+ if (ret == (ssize_t)-EAGAIN) {
+ mlog(0, "sendpage of size %zu to " SC_NODEF_FMT
+ " returned EAGAIN\n", size, SC_NODEF_ARGS(sc));
+ cond_resched();
+ continue;
+ }
mlog(ML_ERROR, "sendpage of size %zu to " SC_NODEF_FMT
" failed with %zd\n", size, SC_NODEF_ARGS(sc), ret);
o2net_ensure_shutdown(nn, sc, 0);
+ break;
}
}
int ret;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
handle_t *handle;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *) bh->b_data;
mlog_entry_void();
goto out;
}
+ ret = ocfs2_journal_access(handle, inode, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ /*
+ * Don't use ocfs2_mark_inode_dirty() here as we don't always
+ * have i_mutex to guard against concurrent changes to other
+ * inode fields.
+ */
inode->i_atime = CURRENT_TIME;
- ret = ocfs2_mark_inode_dirty(handle, inode, bh);
+ di->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
+ di->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
+
+ ret = ocfs2_journal_dirty(handle, bh);
if (ret < 0)
mlog_errno(ret);
+out_commit:
ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
out:
mlog_exit(ret);
}
if (size_change && attr->ia_size != i_size_read(inode)) {
+ if (attr->ia_size > sb->s_maxbytes) {
+ status = -EFBIG;
+ goto bail_unlock;
+ }
+
if (i_size_read(inode) > attr->ia_size)
status = ocfs2_truncate_file(inode, bh, attr->ia_size);
else
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct buffer_head *di_bh = NULL;
handle_t *handle;
- unsigned long long max_off = ocfs2_max_file_offset(inode->i_sb->s_blocksize_bits);
+ unsigned long long max_off = inode->i_sb->s_maxbytes;
if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
return -EROFS;
}
dst = kmap_atomic(page, KM_USER0);
- memcpy(dst + (pos & (PAGE_CACHE_SIZE - 1)), buf, bytes);
+ memcpy(dst + (pos & (loff_t)(PAGE_CACHE_SIZE - 1)), buf, bytes);
kunmap_atomic(dst, KM_USER0);
flush_dcache_page(page);
ocfs2_put_write_source(user_page);
struct buffer_head *old_inode_de_bh = NULL; // if old_dentry is a dir,
// this is the 1st dirent bh
nlink_t old_dir_nlink = old_dir->i_nlink;
+ struct ocfs2_dinode *old_di;
/* At some point it might be nice to break this function up a
* bit. */
old_inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(old_inode);
- ocfs2_mark_inode_dirty(handle, old_inode, old_inode_bh);
+
+ status = ocfs2_journal_access(handle, old_inode, old_inode_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (status >= 0) {
+ old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
+
+ old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
+ old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
+
+ status = ocfs2_journal_dirty(handle, old_inode_bh);
+ if (status < 0)
+ mlog_errno(status);
+ } else
+ mlog_errno(status);
/* now that the name has been added to new_dir, remove the old name */
status = ocfs2_delete_entry(handle, old_dir, old_de, old_de_bh);
/*
* Find the 1st page index which covers the given clusters.
*/
-static inline unsigned long ocfs2_align_clusters_to_page_index(struct super_block *sb,
+static inline pgoff_t ocfs2_align_clusters_to_page_index(struct super_block *sb,
u32 clusters)
{
unsigned int cbits = OCFS2_SB(sb)->s_clustersize_bits;
- unsigned long index = clusters;
+ pgoff_t index = clusters;
if (PAGE_CACHE_SHIFT > cbits) {
- index = clusters >> (PAGE_CACHE_SHIFT - cbits);
+ index = (pgoff_t)clusters >> (PAGE_CACHE_SHIFT - cbits);
} else if (PAGE_CACHE_SHIFT < cbits) {
- index = clusters << (cbits - PAGE_CACHE_SHIFT);
+ index = (pgoff_t)clusters << (cbits - PAGE_CACHE_SHIFT);
}
return index;
kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
}
-/* From xfs_super.c:xfs_max_file_offset
- * Copyright (c) 2000-2004 Silicon Graphics, Inc.
- */
-unsigned long long ocfs2_max_file_offset(unsigned int blockshift)
+static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
+ unsigned int cbits)
{
- unsigned int pagefactor = 1;
- unsigned int bitshift = BITS_PER_LONG - 1;
-
- /* Figure out maximum filesize, on Linux this can depend on
- * the filesystem blocksize (on 32 bit platforms).
- * __block_prepare_write does this in an [unsigned] long...
- * page->index << (PAGE_CACHE_SHIFT - bbits)
- * So, for page sized blocks (4K on 32 bit platforms),
- * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
- * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
- * but for smaller blocksizes it is less (bbits = log2 bsize).
- * Note1: get_block_t takes a long (implicit cast from above)
- * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
- * can optionally convert the [unsigned] long from above into
- * an [unsigned] long long.
+ unsigned int bytes = 1 << cbits;
+ unsigned int trim = bytes;
+ unsigned int bitshift = 32;
+
+ /*
+ * i_size and all block offsets in ocfs2 are always 64 bits
+ * wide. i_clusters is 32 bits, in cluster-sized units. So on
+ * 64 bit platforms, cluster size will be the limiting factor.
*/
#if BITS_PER_LONG == 32
# if defined(CONFIG_LBD)
BUILD_BUG_ON(sizeof(sector_t) != 8);
- pagefactor = PAGE_CACHE_SIZE;
- bitshift = BITS_PER_LONG;
+ /*
+ * We might be limited by page cache size.
+ */
+ if (bytes > PAGE_CACHE_SIZE) {
+ bytes = PAGE_CACHE_SIZE;
+ trim = 1;
+ /*
+ * Shift by 31 here so that we don't get larger than
+ * MAX_LFS_FILESIZE
+ */
+ bitshift = 31;
+ }
# else
- pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
+ /*
+ * We are limited by the size of sector_t. Use block size, as
+ * that's what we expose to the VFS.
+ */
+ bytes = 1 << bbits;
+ trim = 1;
+ bitshift = 31;
# endif
#endif
- return (((unsigned long long)pagefactor) << bitshift) - 1;
+ /*
+ * Trim by a whole cluster when we can actually approach the
+ * on-disk limits. Otherwise we can overflow i_clusters when
+ * an extent start is at the max offset.
+ */
+ return (((unsigned long long)bytes) << bitshift) - trim;
}
static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
int sector_size)
{
int status = 0;
- int i;
- struct ocfs2_dinode *di = NULL;
+ int i, cbits, bbits;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
struct inode *inode = NULL;
struct buffer_head *bitmap_bh = NULL;
struct ocfs2_journal *journal;
sb->s_fs_info = osb;
sb->s_op = &ocfs2_sops;
sb->s_export_op = &ocfs2_export_ops;
+ sb->s_time_gran = 1;
sb->s_flags |= MS_NOATIME;
/* this is needed to support O_LARGEFILE */
- sb->s_maxbytes = ocfs2_max_file_offset(sb->s_blocksize_bits);
+ cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
+ bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
+ sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
osb->sb = sb;
/* Save off for ocfs2_rw_direct */
goto bail;
}
- di = (struct ocfs2_dinode *)bh->b_data;
-
osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
#define ocfs2_abort(sb, fmt, args...) __ocfs2_abort(sb, __PRETTY_FUNCTION__, fmt, ##args)
-unsigned long long ocfs2_max_file_offset(unsigned int blockshift);
-
#endif /* OCFS2_SUPER_H */
#define __NR_signalfd 321
#define __NR_timerfd 322
#define __NR_eventfd 323
+#define __NR_fallocate 324
#ifdef __KERNEL__
-#define NR_syscalls 324
+#define NR_syscalls 325
#define __ARCH_WANT_IPC_PARSE_VERSION
/* #define __ARCH_WANT_OLD_READDIR */
#define _ASM_GENERIC_PGTABLE_H
#ifndef __ASSEMBLY__
+#ifdef CONFIG_MMU
#ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
/*
#define move_pte(pte, prot, old_addr, new_addr) (pte)
#endif
-/*
- * A facility to provide lazy MMU batching. This allows PTE updates and
- * page invalidations to be delayed until a call to leave lazy MMU mode
- * is issued. Some architectures may benefit from doing this, and it is
- * beneficial for both shadow and direct mode hypervisors, which may batch
- * the PTE updates which happen during this window. Note that using this
- * interface requires that read hazards be removed from the code. A read
- * hazard could result in the direct mode hypervisor case, since the actual
- * write to the page tables may not yet have taken place, so reads though
- * a raw PTE pointer after it has been modified are not guaranteed to be
- * up to date. This mode can only be entered and left under the protection of
- * the page table locks for all page tables which may be modified. In the UP
- * case, this is required so that preemption is disabled, and in the SMP case,
- * it must synchronize the delayed page table writes properly on other CPUs.
- */
-#ifndef __HAVE_ARCH_ENTER_LAZY_MMU_MODE
-#define arch_enter_lazy_mmu_mode() do {} while (0)
-#define arch_leave_lazy_mmu_mode() do {} while (0)
-#define arch_flush_lazy_mmu_mode() do {} while (0)
-#endif
-
-/*
- * A facility to provide batching of the reload of page tables with the
- * actual context switch code for paravirtualized guests. By convention,
- * only one of the lazy modes (CPU, MMU) should be active at any given
- * time, entry should never be nested, and entry and exits should always
- * be paired. This is for sanity of maintaining and reasoning about the
- * kernel code.
- */
-#ifndef __HAVE_ARCH_ENTER_LAZY_CPU_MODE
-#define arch_enter_lazy_cpu_mode() do {} while (0)
-#define arch_leave_lazy_cpu_mode() do {} while (0)
-#define arch_flush_lazy_cpu_mode() do {} while (0)
-#endif
-
/*
* When walking page tables, get the address of the next boundary,
* or the end address of the range if that comes earlier. Although no
}
return 0;
}
+#endif /* CONFIG_MMU */
+
+/*
+ * A facility to provide lazy MMU batching. This allows PTE updates and
+ * page invalidations to be delayed until a call to leave lazy MMU mode
+ * is issued. Some architectures may benefit from doing this, and it is
+ * beneficial for both shadow and direct mode hypervisors, which may batch
+ * the PTE updates which happen during this window. Note that using this
+ * interface requires that read hazards be removed from the code. A read
+ * hazard could result in the direct mode hypervisor case, since the actual
+ * write to the page tables may not yet have taken place, so reads though
+ * a raw PTE pointer after it has been modified are not guaranteed to be
+ * up to date. This mode can only be entered and left under the protection of
+ * the page table locks for all page tables which may be modified. In the UP
+ * case, this is required so that preemption is disabled, and in the SMP case,
+ * it must synchronize the delayed page table writes properly on other CPUs.
+ */
+#ifndef __HAVE_ARCH_ENTER_LAZY_MMU_MODE
+#define arch_enter_lazy_mmu_mode() do {} while (0)
+#define arch_leave_lazy_mmu_mode() do {} while (0)
+#define arch_flush_lazy_mmu_mode() do {} while (0)
+#endif
+
+/*
+ * A facility to provide batching of the reload of page tables with the
+ * actual context switch code for paravirtualized guests. By convention,
+ * only one of the lazy modes (CPU, MMU) should be active at any given
+ * time, entry should never be nested, and entry and exits should always
+ * be paired. This is for sanity of maintaining and reasoning about the
+ * kernel code.
+ */
+#ifndef __HAVE_ARCH_ENTER_LAZY_CPU_MODE
+#define arch_enter_lazy_cpu_mode() do {} while (0)
+#define arch_leave_lazy_cpu_mode() do {} while (0)
+#define arch_flush_lazy_cpu_mode() do {} while (0)
+#endif
+
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_GENERIC_PGTABLE_H */
extern int timer_over_8254;
extern int local_apic_timer_c2_ok;
+extern int local_apic_timer_disabled;
+
#else /* !CONFIG_X86_LOCAL_APIC */
static inline void lapic_shutdown(void) { }
#define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Intel Architectural PerfMon */
#define X86_FEATURE_PEBS (3*32+12) /* Precise-Event Based Sampling */
#define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */
-#define X86_FEATURE_LAPIC_TIMER_BROKEN (3*32+ 14) /* lapic timer broken in C1 */
+/* 14 free */
#define X86_FEATURE_SYNC_RDTSC (3*32+15) /* RDTSC synchronizes the CPU */
#define X86_FEATURE_REP_GOOD (3*32+16) /* rep microcode works well on this CPU */
* The patch function should return the number of bytes of code
* generated, as we nop pad the rest in generic code.
*/
- unsigned (*patch)(u8 type, u16 clobber, void *firstinsn, unsigned len);
+ unsigned (*patch)(u8 type, u16 clobber, void *insnbuf,
+ unsigned long addr, unsigned len);
/* Basic arch-specific setup */
void (*arch_setup)(void);
unsigned paravirt_patch_nop(void);
unsigned paravirt_patch_ignore(unsigned len);
-unsigned paravirt_patch_call(void *target, u16 tgt_clobbers,
- void *site, u16 site_clobbers,
+unsigned paravirt_patch_call(void *insnbuf,
+ const void *target, u16 tgt_clobbers,
+ unsigned long addr, u16 site_clobbers,
unsigned len);
-unsigned paravirt_patch_jmp(void *target, void *site, unsigned len);
-unsigned paravirt_patch_default(u8 type, u16 clobbers, void *site, unsigned len);
+unsigned paravirt_patch_jmp(const void *target, void *insnbuf,
+ unsigned long addr, unsigned len);
+unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
+ unsigned long addr, unsigned len);
-unsigned paravirt_patch_insns(void *site, unsigned len,
+unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
const char *start, const char *end);
int paravirt_disable_iospace(void);
int node; /* NUMA node */
};
+/* scan a bus after allocating a pci_sysdata for it */
+extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
+
#include <linux/mm.h> /* for struct page */
/* Can be used to override the logic in pci_scan_bus for skipping
void* iommu; /* IOMMU private data */
};
+extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
+
#ifdef CONFIG_CALGARY_IOMMU
static inline void* pci_iommu(struct pci_bus *bus)
{
#include <linux/mempool.h>
#include <linux/ioprio.h>
+#ifdef CONFIG_BLOCK
+
/* Platforms may set this to teach the BIO layer about IOMMU hardware. */
#include <asm/io.h>
__bio_kmap_irq((bio), (bio)->bi_idx, (flags))
#define bio_kunmap_irq(buf,flags) __bio_kunmap_irq(buf, flags)
+#endif /* CONFIG_BLOCK */
#endif /* __LINUX_BIO_H */
*/
struct blk_io_trace_remap {
__be32 device;
- u32 __pad;
+ __be32 device_from;
__be64 sector;
};
return;
r.device = cpu_to_be32(dev);
+ r.device_from = cpu_to_be32(bio->bi_bdev->bd_dev);
r.sector = cpu_to_be64(to);
__blk_add_trace(bt, from, bio->bi_size, bio->bi_rw, BLK_TA_REMAP, !bio_flagged(bio, BIO_UPTODATE), sizeof(r), &r);
extern void clockevents_set_mode(struct clock_event_device *dev,
enum clock_event_mode mode);
extern int clockevents_register_notifier(struct notifier_block *nb);
-extern void clockevents_unregister_notifier(struct notifier_block *nb);
extern int clockevents_program_event(struct clock_event_device *dev,
ktime_t expires, ktime_t now);
extern int generic_file_mmap(struct file *, struct vm_area_struct *);
extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);
extern int file_read_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size);
-extern int file_send_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size);
int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk);
extern ssize_t generic_file_aio_read(struct kiocb *, const struct iovec *, unsigned long, loff_t);
extern ssize_t generic_file_aio_write(struct kiocb *, const struct iovec *, unsigned long, loff_t);
#define __init __attribute__ ((__section__ (".init.text"))) __cold
#define __initdata __attribute__ ((__section__ (".init.data")))
#define __exitdata __attribute__ ((__section__(".exit.data")))
-#define __exit_call __attribute_used__ __attribute__ ((__section__ (".exitcall.exit"))) __cold
+#define __exit_call __attribute_used__ __attribute__ ((__section__ (".exitcall.exit")))
/* modpost check for section mismatches during the kernel build.
* A section mismatch happens when there are references from a
int prefix_type, int rowsize, int groupsize,
const void *buf, size_t len, bool ascii);
extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
- void *buf, size_t len);
+ const void *buf, size_t len);
#define hex_asc(x) "0123456789abcdef"[x]
#ifdef DEBUG
write_proc_t *write_proc;
atomic_t count; /* use count */
int deleted; /* delete flag */
- void *set;
int pde_users; /* number of callers into module in progress */
spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */
struct completion *pde_unload_completion;
extern void FASTCALL(call_rcu_bh(struct rcu_head *head,
void (*func)(struct rcu_head *head)));
extern void synchronize_rcu(void);
-void synchronize_idle(void);
extern void rcu_barrier(void);
#endif /* __KERNEL__ */
#define TTY_PTY_LOCK 16 /* pty private */
#define TTY_NO_WRITE_SPLIT 17 /* Preserve write boundaries to driver */
#define TTY_HUPPED 18 /* Post driver->hangup() */
+#define TTY_FLUSHING 19 /* Flushing to ldisc in progress */
+#define TTY_FLUSHPENDING 20 /* Queued buffer flush pending */
#define TTY_WRITE_FLUSH(tty) tty_write_flush((tty))
EXPORT_SYMBOL_GPL(unregister_kprobe);
EXPORT_SYMBOL_GPL(register_jprobe);
EXPORT_SYMBOL_GPL(unregister_jprobe);
+#ifdef CONFIG_KPROBES
EXPORT_SYMBOL_GPL(jprobe_return);
+#endif
+
+#ifdef CONFIG_KPROBES
EXPORT_SYMBOL_GPL(register_kretprobe);
EXPORT_SYMBOL_GPL(unregister_kretprobe);
+#endif
region->end_pfn << PAGE_SHIFT);
for (pfn = region->start_pfn; pfn < region->end_pfn; pfn++)
- memory_bm_set_bit(bm, pfn);
+ if (pfn_valid(pfn))
+ memory_bm_set_bit(bm, pfn);
}
}
EXPORT_SYMBOL_GPL(unregister_timer_hook);
EXPORT_SYMBOL_GPL(task_handoff_register);
EXPORT_SYMBOL_GPL(task_handoff_unregister);
+EXPORT_SYMBOL_GPL(profile_event_register);
+EXPORT_SYMBOL_GPL(profile_event_unregister);
#endif /* CONFIG_PROFILING */
-EXPORT_SYMBOL_GPL(profile_event_register);
-EXPORT_SYMBOL_GPL(profile_event_unregister);
#ifdef CONFIG_SMP
/*
unsigned int clock_warps, clock_overflows;
unsigned int clock_unstable_events;
+ u64 tick_timestamp;
atomic_t nr_iowait;
/*
* Catch too large forward jumps too:
*/
- if (unlikely(delta > 2*TICK_NSEC)) {
- clock++;
+ if (unlikely(clock + delta > rq->tick_timestamp + TICK_NSEC)) {
+ if (clock < rq->tick_timestamp + TICK_NSEC)
+ clock = rq->tick_timestamp + TICK_NSEC;
+ else
+ clock++;
rq->clock_overflows++;
} else {
if (unlikely(delta > rq->clock_max_delta))
int cpu = smp_processor_id();
struct rq *rq = cpu_rq(cpu);
struct task_struct *curr = rq->curr;
+ u64 next_tick = rq->tick_timestamp + TICK_NSEC;
spin_lock(&rq->lock);
__update_rq_clock(rq);
+ /*
+ * Let rq->clock advance by at least TICK_NSEC:
+ */
+ if (unlikely(rq->clock < next_tick))
+ rq->clock = next_tick;
+ rq->tick_timestamp = rq->clock;
update_cpu_load(rq);
if (curr != rq->idle) /* FIXME: needed? */
curr->sched_class->task_tick(rq, curr);
void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
{
- SEQ_printf(m, "\ncfs_rq %p\n", cfs_rq);
+ SEQ_printf(m, "\ncfs_rq\n");
#define P(x) \
SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(cfs_rq->x))
for_each_leaf_cfs_rq(busiest, busy_cfs_rq) {
#ifdef CONFIG_FAIR_GROUP_SCHED
struct cfs_rq *this_cfs_rq;
- long imbalances;
+ long imbalance;
unsigned long maxload;
this_cfs_rq = cpu_cfs_rq(busy_cfs_rq, this_cpu);
- imbalance = busy_cfs_rq->load.weight -
- this_cfs_rq->load.weight;
+ imbalance = busy_cfs_rq->load.weight - this_cfs_rq->load.weight;
/* Don't pull if this_cfs_rq has more load than busy_cfs_rq */
if (imbalance <= 0)
continue;
*this_best_prio = cfs_rq_best_prio(this_cfs_rq);
#else
-#define maxload rem_load_move
+# define maxload rem_load_move
#endif
/* pass busy_cfs_rq argument into
* load_balance_[start|next]_fair iterators
.mode = 0644,
.proc_handler = &proc_doulongvec_minmax,
},
+#endif
#ifdef CONFIG_NUMA
{
.ctl_name = CTL_UNNUMBERED,
.strategy = &sysctl_string,
},
#endif
-#endif
#if defined(CONFIG_X86_32) || \
(defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL))
{
return ret;
}
-/**
- * clockevents_unregister_notifier - unregister a clock events change listener
- */
-void clockevents_unregister_notifier(struct notifier_block *nb)
-{
- spin_lock(&clockevents_lock);
- raw_notifier_chain_unregister(&clockevents_chain, nb);
- spin_unlock(&clockevents_lock);
-}
-
/*
* Notify about a clock event change. Called with clockevents_lock
* held.
* rowsize of 16, groupsize of 1, and ASCII output included.
*/
void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
- void *buf, size_t len)
+ const void *buf, size_t len)
{
print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, 16, 1,
buf, len, 1);
/**
* do_generic_mapping_read - generic file read routine
* @mapping: address_space to be read
- * @ra: file's readahead state
+ * @_ra: file's readahead state
* @filp: the file to read
* @ppos: current file position
* @desc: read_descriptor
}
EXPORT_SYMBOL(generic_file_aio_read);
-int file_send_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size)
-{
- ssize_t written;
- unsigned long count = desc->count;
- struct file *file = desc->arg.data;
-
- if (size > count)
- size = count;
-
- written = file->f_op->sendpage(file, page, offset,
- size, &file->f_pos, size<count);
- if (written < 0) {
- desc->error = written;
- written = 0;
- }
- desc->count = count - written;
- desc->written += written;
- return written;
-}
-
static ssize_t
do_readahead(struct address_space *mapping, struct file *filp,
unsigned long index, unsigned long nr)
my $P = $0;
$P =~ s@.*/@@g;
-my $V = '0.08';
+my $V = '0.09';
use Getopt::Long qw(:config no_auto_abbrev);
my $Ident = qr{[A-Za-z\d_]+};
my $Storage = qr{extern|static};
- my $Sparse = qr{__user|__kernel|__force|__iomem};
+ my $Sparse = qr{__user|__kernel|__force|__iomem|__must_check|__init_refok};
my $NonptrType = qr{
\b
(?:const\s+)?
unsigned|
float|
double|
+ bool|
long\s+int|
long\s+long|
long\s+long\s+int|
}x;
my $Type = qr{
\b$NonptrType\b
- (?:\s*\*+\s*const|\s*\*+)?
+ (?:\s*\*+\s*const|\s*\*+|(?:\s*\[\s*\])+)?
+ (?:\s+$Sparse)*
}x;
my $Declare = qr{(?:$Storage\s+)?$Type};
my $Attribute = qr{const|__read_mostly|__init|__initdata|__meminit};
ERROR("use tabs not spaces\n" . $herevet);
}
- #
- # The rest of our checks refer specifically to C style
- # only apply those _outside_ comments.
- #
- next if ($in_comment);
-
# Remove comments from the line before processing.
- $line =~ s@/\*.*\*/@@g;
- $line =~ s@/\*.*@@;
- $line =~ s@.*\*/@@;
+ my $comment_edge = ($line =~ s@/\*.*\*/@@g) +
+ ($line =~ s@/\*.*@@) +
+ ($line =~ s@^(.).*\*/@$1@);
+
+# The rest of our checks refer specifically to C style
+# only apply those _outside_ comments. Only skip
+# lines in the middle of comments.
+ next if (!$comment_edge && $in_comment);
# Standardise the strings and chars within the input to simplify matching.
$line = sanitise_line($line);
if (($prevline !~ /^}/) &&
($prevline !~ /^\+}/) &&
($prevline !~ /^ }/) &&
- ($prevline !~ /\s$name(?:\s+$Attribute)?\s*(?:;|=)/)) {
+ ($prevline !~ /\b\Q$name\E(?:\s+$Attribute)?\s*(?:;|=)/)) {
WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
}
}
# check for spaces between functions and their parentheses.
if ($line =~ /($Ident)\s+\(/ &&
- $1 !~ /^(?:if|for|while|switch|return|volatile)$/ &&
+ $1 !~ /^(?:if|for|while|switch|return|volatile|__volatile__|__attribute__|format|__extension__|Copyright)$/ &&
$line !~ /$Type\s+\(/ && $line !~ /^.\#\s*define\b/) {
- ERROR("no space between function name and open parenthesis '('\n" . $herecurr);
+ WARN("no space between function name and open parenthesis '('\n" . $herecurr);
}
# Check operator spacing.
# Note we expand the line with the leading + as the real
$c = 'W' if ($elements[$n + 2] =~ /^\s/);
$c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/);
$c = 'O' if ($elements[$n + 2] eq '');
+ $c = 'E' if ($elements[$n + 2] =~ /\s*\\$/);
} else {
$c = 'E';
}
# All the others need spaces both sides.
} elsif ($ctx !~ /[EW]x[WE]/) {
- ERROR("need spaces around that '$op' $at\n" . $hereptr);
+ # Ignore email addresses <foo@bar>
+ if (!($op eq '<' && $cb =~ /$;\S+\@\S+>/) &&
+ !($op eq '>' && $cb =~ /<\S+\@\S+$;/)) {
+ ERROR("need spaces around that '$op' $at\n" . $hereptr);
+ }
}
$off += length($elements[$n + 1]);
}
WARN("multiple assignments should be avoided\n" . $herecurr);
}
-# check for multiple declarations, allowing for a function declaration
-# continuation.
- if ($line =~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Ident.*/ &&
- $line !~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Type\s*$Ident.*/) {
- WARN("declaring multiple variables together should be avoided\n" . $herecurr);
- }
+## # check for multiple declarations, allowing for a function declaration
+## # continuation.
+## if ($line =~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Ident.*/ &&
+## $line !~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Type\s*$Ident.*/) {
+##
+## # Remove any bracketed sections to ensure we do not
+## # falsly report the parameters of functions.
+## my $ln = $line;
+## while ($ln =~ s/\([^\(\)]*\)//g) {
+## }
+## if ($ln =~ /,/) {
+## WARN("declaring multiple variables together should be avoided\n" . $herecurr);
+## }
+## }
#need space before brace following if, while, etc
- if ($line =~ /\(.*\){/ || $line =~ /do{/) {
+ if (($line =~ /\(.*\){/ && $line !~ /\($Type\){/) ||
+ $line =~ /do{/) {
ERROR("need a space before the open brace '{'\n" . $herecurr);
}
ERROR("need a space after that close brace '}'\n" . $herecurr);
}
+# check spacing on square brackets
+ if ($line =~ /\[\s/ && $line !~ /\[\s*$/) {
+ ERROR("no space after that open square bracket '['\n" . $herecurr);
+ }
+ if ($line =~ /\s\]/) {
+ ERROR("no space before that close square bracket ']'\n" . $herecurr);
+ }
+
+# check spacing on paretheses
+ if ($line =~ /\(\s/ && $line !~ /\(\s*$/) {
+ ERROR("no space after that open parenthesis '('\n" . $herecurr);
+ }
+ if ($line =~ /\s\)/) {
+ ERROR("no space before that close parenthesis ')'\n" . $herecurr);
+ }
+
#goto labels aren't indented, allow a single space however
if ($line=~/^.\s+[A-Za-z\d_]+:(?![0-9]+)/ and
!($line=~/^. [A-Za-z\d_]+:/) and !($line=~/^.\s+default:/)) {
# grabbing the statement after the identifier
$prevline =~ m{^(.#\s*define\s*$Ident(?:\([^\)]*\))?\s*)(.*)\\\s*$};
##print "1<$1> 2<$2>\n";
- if ($2 ne '') {
+ if (defined $2 && $2 ne '') {
$off = length($1);
$ln--;
$cnt++;
my ($lvl, @block) = ctx_block_level($nr, $cnt);
my $stmt = join(' ', @block);
- $stmt =~ s/^[^{]*{//;
- $stmt =~ s/}[^}]*$//;
+ $stmt =~ s/(^[^{]*){//;
+ my $before = $1;
+ $stmt =~ s/}([^}]*$)//;
+ my $after = $1;
#print "block<" . join(' ', @block) . "><" . scalar(@block) . ">\n";
#print "stmt<$stmt>\n\n";
# Also nested if's often require braces to
# disambiguate the else binding so shhh there.
my @semi = ($stmt =~ /;/g);
+ push(@semi, "/**/") if ($stmt =~ m@/\*@);
##print "semi<" . scalar(@semi) . ">\n";
if ($lvl == 0 && scalar(@semi) < 2 &&
- $stmt !~ /{/ && $stmt !~ /\bif\b/) {
+ $stmt !~ /{/ && $stmt !~ /\bif\b/ &&
+ $before !~ /}/ && $after !~ /{/) {
my $herectx = "$here\n" . join("\n", @control, @block[1 .. $#block]) . "\n";
shift(@block);
- ERROR("braces {} are not necessary for single statement blocks\n" . $herectx);
+ WARN("braces {} are not necessary for single statement blocks\n" . $herectx);
}
}
}
# $clean = 0;
# }
+# warn about spacing in #ifdefs
+ if ($line =~ /^.#\s*(ifdef|ifndef|elif)\s\s+/) {
+ ERROR("exactly one space required after that #$1\n" . $herecurr);
+ }
+
# check for spinlock_t definitions without a comment.
if ($line =~ /^.\s*(struct\s+mutex|spinlock_t)\s+\S+;/) {
my $which = $1;
}
}
# check of hardware specific defines
- if ($line =~ m@^.#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@) {
+ if ($line =~ m@^.#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
CHK("architecture specific defines should be avoided\n" . $herecurr);
}
# check the location of the inline attribute, that it is between
# storage class and type.
- if ($line =~ /$Type\s+(?:inline|__always_inline)\b/ ||
- $line =~ /\b(?:inline|always_inline)\s+$Storage/) {
+ if ($line =~ /$Type\s+(?:inline|__always_inline|noinline)\b/ ||
+ $line =~ /\b(?:inline|__always_inline|noinline)\s+$Storage/) {
ERROR("inline keyword should sit between storage class and type\n" . $herecurr);
}
projects / firefly-linux-kernel-4.4.55.git / commitdiff