Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Steven Rostedt 492a74f421 ring-buffer: Check if ring buffer iterator has stale data ... Usually reads of the ring buffer is performed by a single task. There are two types of reads from the ring buffer. One is a consuming read which will consume the entry that was read and the next read will be the entry that follows. The other is an iterator that will let the user read the contents of the ring buffer without modifying it. When an iterator is allocated, writes to the ring buffer are disabled to protect the iterator. The problem exists when consuming reads happen while an iterator is allocated. Specifically, the kind of read that swaps out an entire page (used by splice) and replaces it with a new read. If the iterator is on the page that is swapped out, then the next read may read from this swapped out page and return garbage. This patch adds a check when reading the iterator to make sure that the iterator contents are still valid. If a consuming read has taken place, the iterator is reset. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2010-01-26 16:09:30 -05:00
..
blktrace.c	Add a tracepoint for block request remapping	2009-10-01 21:19:34 +02:00
ftrace.c	ftrace: Fix MATCH_END_ONLY function filter	2010-01-14 22:38:03 -05:00
Kconfig	tracing: Kconfig spelling fixes and cleanups	2009-12-28 10:37:54 +01:00
kmemtrace.c	kmemtrace: Fix up tracer registration	2009-10-01 11:53:44 +02:00
Makefile	Merge branch 'tracing/hw-breakpoints' into perf/core	2009-11-21 14:07:23 +01:00
power-traces.c	tracing/power: Remove two exports	2009-12-13 18:37:28 +01:00
ring_buffer.c	ring-buffer: Check if ring buffer iterator has stale data	2010-01-26 16:09:30 -05:00
ring_buffer_benchmark.c	ring-buffer-benchmark: Add parameters to set produce/consumer priorities	2009-11-25 14:14:15 -05:00
trace.c	tracing: Prevent kernel oops with corrupted buffer	2010-01-25 15:11:53 -05:00
trace.h	Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-12-16 12:02:25 -08:00
trace_boot.c	tracing: add filter event logic to special, mmiotrace and boot tracers	2009-09-12 23:34:04 -04:00
trace_branch.c	tracing: user local buffer variable for trace branch tracer	2009-10-07 21:53:41 -04:00
trace_clock.c	locking: Convert __raw_spin* functions to arch_spin*	2009-12-14 23:55:32 +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	tracing: Change event->profile_count to be int type	2009-12-13 18:37:28 +01:00
trace_events.c	tracing: Move a printk out of ftrace_raw_reg_event_foo()	2009-12-13 18:37:25 +01:00
trace_events_filter.c	tracing/filters: Add comment for match callbacks	2010-01-14 22:38:14 -05:00
trace_export.c	tracing: Fix sign fields in ftrace_define_fields_##call()	2009-12-30 10:27:06 -05:00
trace_functions.c	tracing: switch function prints from %pf to %ps	2009-09-17 15:53:40 -04:00
trace_functions_graph.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_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 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-12-31 11:52:01 -08:00
trace_ksym.c	ksym_tracer: Remove trace_stat	2009-12-30 07:50:50 +01:00
trace_mmiotrace.c	tracing: add filter event logic to special, mmiotrace and boot tracers	2009-09-12 23:34:04 -04:00
trace_nop.c
trace_output.c	tracing: Add full state to trace_seq	2009-12-09 14:05:49 -05:00
trace_output.h	tracing: consolidate code between trace_output.c and trace_function_graph.c	2009-09-11 14:24:13 -04:00
trace_printk.c	tracing: Remove markers	2009-09-18 21:22:08 +02:00
trace_sched_switch.c	tracing: pass around ring buffer instead of tracer	2009-09-04 18:59:39 -04:00
trace_sched_wakeup.c	locking: Convert __raw_spin* functions to arch_spin*	2009-12-14 23:55:32 +01:00
trace_selftest.c	locking: Convert __raw_spin* functions to arch_spin*	2009-12-14 23:55:32 +01:00
trace_selftest_dynamic.c
trace_stack.c	locking: Convert __raw_spin* functions to arch_spin*	2009-12-14 23:55:32 +01:00
trace_stat.c	trace_stat: Fix missing entry in stat file	2009-08-17 11:25:09 +02:00
trace_stat.h	tracing/stat: Add stat_release() callback	2009-07-10 12:14:05 +02:00
trace_syscalls.c	tracing: Move a printk out of ftrace_raw_reg_event_foo()	2009-12-13 18:37:25 +01:00
trace_sysprof.c	perf events, x86/stacktrace: Make stack walking optional	2009-12-17 09:56:19 +01:00
trace_workqueue.c	tracing/workqueues: Add refcnt to struct cpu_workqueue_stats	2009-07-10 12:14:07 +02:00