Juri Lelli 52d85d7630 ftrace: Fix stddev calculation in function profiler ... When FUNCTION_GRAPH_TRACER is enabled, ftrace can profile kernel functions and print basic statistics about them. Unfortunately, running stddev calculation is wrong. This patch corrects it implementing Welford’s method: s^2 = 1 / (n * (n-1)) * (n * \Sum (x_i)^2 - (\Sum x_i)^2) . Link: http://lkml.kernel.org/r/1371031398-24048-1-git-send-email-juri.lelli@gmail.com Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Juri Lelli <juri.lelli@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>		2013-06-19 23:32:09 -04:00
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blktrace.c	Merge branch 'for-3.10/drivers' of git://git.kernel.dk/linux-block	2013-05-08 11:51:05 -07:00
ftrace.c	ftrace: Fix stddev calculation in function profiler	2013-06-19 23:32:09 -04:00
Kconfig	ring-buffer: Select IRQ_WORK	2013-05-03 19:24:17 -04:00
Makefile
power-traces.c	PM / tracing: remove deprecated power trace API	2013-01-26 00:39:12 +01:00
ring_buffer.c	ring-buffer: Do not poll non allocated cpu buffers	2013-05-28 10:53:20 -04:00
ring_buffer_benchmark.c
rpm-traces.c
trace.c	tracing: Disable tracing on warning	2013-06-19 23:32:07 -04:00
trace.h	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-04-30 07:41:01 -07:00
trace_branch.c	tracing: Fix the branch tracer that broke with buffer change	2013-03-15 00:35:54 -04:00
trace_clock.c	tracing: Add "uptime" trace clock that uses jiffies	2013-03-15 00:36:09 -04:00
trace_entries.h	tracing: Add trace_puts() for even faster trace_printk() tracing	2013-03-15 00:35:55 -04:00
trace_event_perf.c
trace_events.c	tracing: Do not call kmem_cache_free() on allocation failure	2013-06-11 18:38:52 -04:00
trace_events_filter.c	tracing: Add binary '&' filter for events	2013-06-19 23:30:40 -04:00
trace_events_filter_test.h
trace_export.c	tracing: Fix some section mismatch warnings	2013-03-15 00:34:54 -04:00
trace_functions.c	tracing: Add function probe to trigger a ftrace dump of current CPU trace	2013-06-11 18:38:48 -04:00
trace_functions_graph.c	tracing: Consolidate max_tr into main trace_array structure	2013-03-15 00:35:40 -04:00
trace_irqsoff.c	tracing: Add function-trace option to disable function tracing of latency tracers	2013-03-15 00:36:08 -04:00
trace_kdb.c	tracing: Consolidate max_tr into main trace_array structure	2013-03-15 00:35:40 -04:00
trace_kprobe.c	tracing/kprobes: Remove unnecessary checking of trace_probe_is_enabled	2013-06-19 23:32:08 -04:00
trace_mmiotrace.c	tracing: Consolidate max_tr into main trace_array structure	2013-03-15 00:35:40 -04:00
trace_nop.c
trace_output.c	Tracing updates for Linux 3.10	2013-04-29 13:55:38 -07:00
trace_output.h	tracing: Rename trace_event_mutex to trace_event_sem	2013-03-15 13:22:10 -04:00
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: Consolidate max_tr into main trace_array structure	2013-03-15 00:35:40 -04:00
trace_sched_wakeup.c	tracing: Add function-trace option to disable function tracing of latency tracers	2013-03-15 00:36:08 -04:00
trace_selftest.c	tracing: Fix bad parameter passed in branch selftest	2013-05-29 16:00:03 -04:00
trace_selftest_dynamic.c
trace_stack.c	Tracing updates for Linux 3.10	2013-04-29 13:55:38 -07:00
trace_stat.c	tracing: Check return value of tracing_init_dentry()	2013-04-12 23:02:32 -04:00
trace_stat.h
trace_syscalls.c	tracing: Fix comment about prefix in arch_syscall_match_sym_name()	2013-03-15 13:22:09 -04:00
trace_uprobe.c	uprobes/perf: Avoid perf_trace_buf_prepare/submit if ->perf_events is empty	2013-04-15 17:39:52 +02:00