Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Hiraku Toyooka debdd57f51 tracing: Make a snapshot feature available from userspace ... Ftrace has a snapshot feature available from kernel space and latency tracers (e.g. irqsoff) are using it. This patch enables user applictions to take a snapshot via debugfs. Add "snapshot" debugfs file in "tracing" directory. snapshot: This is used to take a snapshot and to read the output of the snapshot. # echo 1 > snapshot This will allocate the spare buffer for snapshot (if it is not allocated), and take a snapshot. # cat snapshot This will show contents of the snapshot. # echo 0 > snapshot This will free the snapshot if it is allocated. Any other positive values will clear the snapshot contents if the snapshot is allocated, or return EINVAL if it is not allocated. Link: http://lkml.kernel.org/r/20121226025300.3252.86850.stgit@liselsia Cc: Jiri Olsa <jolsa@redhat.com> Cc: David Sharp <dhsharp@google.com> Signed-off-by: Hiraku Toyooka <hiraku.toyooka.gu@hitachi.com> [ Fixed irqsoff selftest and also a conflict with a change that fixes the update_max_tr. ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2013-01-30 11:02:06 -05:00
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blktrace.c	tracing: Use this_cpu_ptr per-cpu helper	2013-01-21 13:22:30 -05:00
ftrace.c	tracing: Avoid unnecessary multiple recursion checks	2013-01-22 23:38:01 -05:00
Kconfig	tracing: Make a snapshot feature available from userspace	2013-01-30 11:02:06 -05:00
Makefile	trace: Stop compiling in trace_clock unconditionally	2012-09-13 22:52:08 -04:00
power-traces.c
ring_buffer.c	ring-buffer: Add stats field for amount read from trace ring buffer	2013-01-30 11:01:53 -05:00
ring_buffer_benchmark.c
rpm-traces.c
trace.c	tracing: Make a snapshot feature available from userspace	2013-01-30 11:02:06 -05:00
trace.h	tracing: Make a snapshot feature available from userspace	2013-01-30 11:02:06 -05:00
trace_branch.c	tracing: Cache comms only after an event occurred	2012-10-31 16:45:31 -04:00
trace_clock.c	tracing: Use sched_clock_cpu for trace_clock_global	2013-01-30 11:02:05 -05:00
trace_entries.h	Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent	2012-03-24 08:19:09 +01:00
trace_event_perf.c	perf/core improvements and fixes:	2012-08-21 11:27:00 +02:00
trace_events.c	tracing: Remove the extra 4 bytes of padding in events	2013-01-21 21:05:41 -05:00
trace_events_filter.c	tracing: Replace strict_strto* with kstrto*	2012-10-31 16:45:23 -04:00
trace_events_filter_test.h
trace_export.c	tracing: Do not enable function event with enable	2012-05-10 15:55:43 -04:00
trace_functions.c	tracing: Fix unsigned int compare of zero in recursion check	2013-01-24 07:52:34 -05:00
trace_functions_graph.c	tracing/fgraph: Adjust fgraph depth before calling trace return callback	2013-01-29 17:30:31 -05:00
trace_irqsoff.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-12-13 12:00:02 -08:00
trace_kdb.c
trace_kprobe.c	tracing: Use irq_work for wake ups and remove *_nowake_*() functions	2012-11-02 10:21:52 -04:00
trace_mmiotrace.c
trace_nop.c
trace_output.c	tracing: Format non-nanosec times from tsc clock without a decimal point.	2012-11-13 15:48:40 -05:00
trace_output.h
trace_printk.c	tracing: Add percpu buffers for trace_printk()	2012-04-23 21:15:55 -04:00
trace_probe.c	tracing: Replace strict_strto* with kstrto*	2012-10-31 16:45:23 -04:00
trace_probe.h	tracing: Provide trace events interface for uprobes	2012-05-07 14:30:17 +02:00
trace_sched_switch.c	tracing: Use irq_work for wake ups and remove *_nowake_*() functions	2012-11-02 10:21:52 -04:00
trace_sched_wakeup.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-12-13 12:00:02 -08:00
trace_selftest.c	ftrace: Fix function tracing recursion self test	2013-01-22 23:37:58 -05:00
trace_selftest_dynamic.c
trace_stack.c	tracing: Remove unneeded checks from the stack tracer	2012-11-19 15:07:13 -05:00
trace_stat.c
trace_stat.h
trace_syscalls.c	tracing/syscalls: Make local functions static	2013-01-21 13:22:31 -05:00
trace_uprobe.c	tracing: Verify target file before registering a uprobe event	2013-01-21 13:22:31 -05:00