Steven Rostedt
3eefae994d
ftrace: limit trace entries ...
Currently there is no protection from the root user to use up all of
memory for trace buffers. If the root user allocates too many entries,
the OOM killer might start kill off all tasks.
This patch adds an algorith to check the following condition:
pages_requested > (freeable_memory + current_trace_buffer_pages) / 4
If the above is met then the allocation fails. The above prevents more
than 1/4th of freeable memory from being used by trace buffers.
To determine the freeable_memory, I made determine_dirtyable_memory in
mm/page-writeback.c global.
Special thanks goes to Peter Zijlstra for suggesting the above calculation.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-23 22:05:14 +02:00
asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace
2008-05-14 19:11:14 -07:00
Merge branch 'omap-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
2008-05-17 22:56:29 +01:00
avr32: types: use <asm-generic/int-*.h> for the avr32 architecture
2008-05-02 16:18:20 -07:00
Blackfin serial driver: add extra IRQ flag for 8250 serial driver
2008-05-17 18:21:57 +08:00
cris: types: use <asm-generic/int-*.h> for the cris architecture
2008-05-02 16:18:20 -07:00
read_barrier_depends arch fixlets
2008-05-14 10:05:18 -07:00
types: add C99-style constructors to <asm-generic/int-*.h>
2008-05-02 16:18:42 -07:00
asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace
2008-05-14 19:11:14 -07:00
KVM: ia64: Set KVM_IOAPIC_NUM_PINS to 48
2008-05-18 14:34:16 +03:00
m32r: types: use <asm-generic/int-*.h> for the m32r architecture
2008-05-02 16:18:21 -07:00
m68k: Prefix ISA type with ISA_TYPE_
2008-05-18 13:28:50 -07:00
m68knommu: rework definition of HZ
2008-05-01 08:08:36 -07:00
[MIPS] Get rid of __ilog2
2008-05-12 16:46:55 +01:00
MN10300: Make cpu_relax() invoke barrier()
2008-05-08 10:49:39 -07:00
parisc: use conditional macro for 64-bit wide ops
2008-05-15 11:03:43 -04:00
[POWERPC] Fix uninitialized variable bug in copy_{to|from}_user
2008-05-15 20:49:52 +10:00
[POWERPC] ppc: More compile fixes
2008-05-12 22:57:51 +10:00
[S390] s390dbf: Use const char * for dbf name.
2008-05-15 16:52:39 +02:00
sh: use the common ascii hex helpers
2008-05-16 15:09:08 +09:00
sparc: remove CVS keywords
2008-05-20 00:33:44 -07:00
sparc64: Add global register dumping facility.
2008-05-20 00:33:45 -07:00
asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace
2008-05-14 19:11:14 -07:00
asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace
2008-05-14 19:11:14 -07:00
x86: add a list for custom page fault handlers.
2008-05-23 21:16:38 +02:00
asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace
2008-05-14 19:11:14 -07:00
[CRYPTO] api: Fix scatterwalk_sg_chain
2008-05-01 18:22:28 +08:00
ftrace: limit trace entries
2008-05-23 22:05:14 +02:00
Fix a deadlock in the bttv driver
2008-05-20 10:12:26 -07:00
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/linville/wireless-2.6
2008-05-19 16:29:40 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
2008-05-02 13:52:35 -07:00
[ALSA] ASoC: build fix for snd_soc_info_bool_ext
2008-05-13 14:47:44 +02:00
3eefae994d