Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Steven Rostedt (Red Hat) d8741e2e88 tracing: Add help of snapshot feature when snapshot is empty ... When cat'ing the snapshot file, instead of showing an empty trace header like the trace file does, show how to use the snapshot feature. Also, this is a good place to show if the snapshot has been allocated or not. Users may want to "pre allocate" the snapshot to have a fast "swap" of the current buffer. Otherwise, a swap would be slow and might fail as it would need to allocate the snapshot buffer, and that might fail under tight memory constraints. Here's what it looked like before: # tracer: nop # # entries-in-buffer/entries-written: 0/0 #P:4 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | Here's what it looks like now: # tracer: nop # # # * Snapshot is freed * # # Snapshot commands: # echo 0 > snapshot : Clears and frees snapshot buffer # echo 1 > snapshot : Allocates snapshot buffer, if not already allocated. # Takes a snapshot of the main buffer. # echo 2 > snapshot : Clears snapshot buffer (but does not allocate) # (Doesn't have to be '2' works with any number that # is not a '0' or '1') Acked-by: Hiraku Toyooka <hiraku.toyooka.gu@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2013-03-07 10:31:22 -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	ftrace: Call ftrace cleanup module notifier after all other notifiers	2013-02-18 23:09:26 -05:00
Kconfig	ftrace: Update the kconfig for DYNAMIC_FTRACE	2013-02-27 21:58:01 -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: Add help of snapshot feature when snapshot is empty	2013-03-07 10:31:22 -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	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 17:49:41 -08:00
trace_entries.h
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
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
trace_probe.c	tracing: Replace strict_strto* with kstrto*	2012-10-31 16:45:23 -04:00
trace_probe.h	uprobes/tracing: Introduce is_trace_uprobe_enabled()	2013-02-08 18:24:30 +01:00
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	sched/rt: Move rt specific bits into new header file	2013-02-07 20:51:08 +01:00
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: Allow archs to ignore tracing compat syscalls	2013-02-12 17:46:28 -05:00
trace_uprobe.c	uprobes/perf: Avoid uprobe_apply() whenever possible	2013-02-08 18:28:08 +01:00