Lai Jiangshan 52fbe9cde7 ring-buffer: Move disabled check into preempt disable section ...

The ring buffer resizing and resetting relies on a schedule RCU
action. The buffers are disabled, a synchronize_sched() is called
and then the resize or reset takes place.

But this only works if the disabling of the buffers are within the
preempt disabled section, otherwise a window exists that the buffers
can be written to while a reset or resize takes place.

Cc: stable@kernel.org
Reported-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
LKML-Reference: <4B949E43.2010906@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2010-03-12 20:26:56 -05:00

..

blktrace.c

blktrace: perform cleanup after setup error

2010-02-28 19:47:19 +01:00

ftrace.c

Merge branch 'tip/tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/urgent

2010-03-11 13:39:33 +01:00

Kconfig

Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core

2010-02-27 10:06:10 +01:00

kmemtrace.c

…

Makefile

perf events: Remove CONFIG_EVENT_PROFILE

2009-12-28 10:33:06 +01:00

power-traces.c

tracing/power: Remove two exports

2009-12-13 18:37:28 +01:00

ring_buffer_benchmark.c

ring-buffer-benchmark: Add parameters to set produce/consumer priorities

2009-11-25 14:14:15 -05:00

ring_buffer.c

ring-buffer: Move disabled check into preempt disable section

2010-03-12 20:26:56 -05:00

trace_boot.c

…

trace_branch.c

tracing: Add correct/incorrect to sort keys for branch annotation output

2010-02-09 21:35:05 -05:00

trace_clock.c

tracing: Include irqflags headers from trace clock

2010-02-28 19:45:01 +01:00

trace_entries.h

hw-breakpoints: Rewrite the hw-breakpoints layer on top of perf events

2009-11-08 15:34:42 +01:00

trace_event_profile.c

perf: Factorize trace events raw sample buffer operations

2010-01-29 02:02:57 +01:00

trace_events_filter.c

Merge branch 'perf/urgent' into perf/core

2010-01-29 10:36:22 +01:00

trace_events.c

tracing: Simplify memory recycle of trace_define_field

2010-02-25 10:42:55 -05:00

trace_export.c

tracing: Remove show_format and related macros from TRACE_EVENT

2010-01-06 12:08:46 -05:00

trace_functions_graph.c

function-graph: Add tracing_thresh support to function_graph tracer

2010-03-05 21:20:57 -05:00

trace_functions.c

…

trace_hw_branches.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2009-12-14 09:58:24 -08:00

trace_irqsoff.c

tracing: Add stack trace to irqsoff tracer

2009-12-11 13:19:51 -05:00

trace_kprobe.c

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2010-02-28 10:20:25 -08:00

trace_ksym.c

ksym_tracer: Remove trace_stat

2009-12-30 07:50:50 +01:00

trace_mmiotrace.c

…

trace_nop.c

…

trace_output.c

tracing: Add full state to trace_seq

2009-12-09 14:05:49 -05:00

trace_output.h

…

trace_printk.c

…

trace_sched_switch.c

…

trace_sched_wakeup.c

locking: Convert __raw_spin* functions to arch_spin*

2009-12-14 23:55:32 +01:00

trace_selftest_dynamic.c

…

trace_selftest.c

locking: Convert __raw_spin* functions to arch_spin*

2009-12-14 23:55:32 +01:00

trace_stack.c

tracing: Fix circular dead lock in stack trace

2010-02-02 10:20:18 -05:00

trace_stat.c

…

trace_stat.h

…

trace_syscalls.c

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2010-02-28 10:20:25 -08:00

trace_sysprof.c

perf events, x86/stacktrace: Make stack walking optional

2009-12-17 09:56:19 +01:00

trace_workqueue.c

…

trace.c

Merge branch 'tip/tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/urgent

2010-03-11 13:39:33 +01:00

trace.h

function-graph: Add tracing_thresh support to function_graph tracer

2010-03-05 21:20:57 -05:00