Steven Rostedt
567cd4da54
ring-buffer: User context bit recursion checking
...
Using context bit recursion checking, we can help increase the
performance of the ring buffer.
Before this patch:
# echo function > /debug/tracing/current_tracer
# for i in `seq 10`; do ./hackbench 50; done
Time: 10.285
Time: 10.407
Time: 10.243
Time: 10.372
Time: 10.380
Time: 10.198
Time: 10.272
Time: 10.354
Time: 10.248
Time: 10.253
(average: 10.3012)
Now we have:
# echo function > /debug/tracing/current_tracer
# for i in `seq 10`; do ./hackbench 50; done
Time: 9.712
Time: 9.824
Time: 9.861
Time: 9.827
Time: 9.962
Time: 9.905
Time: 9.886
Time: 10.088
Time: 9.861
Time: 9.834
(average: 9.876)
a 4% savings!
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-01-22 23:38:03 -05:00
..
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
ftrace: Move ARCH_SUPPORTS_FTRACE_SAVE_REGS in Kconfig
2013-01-21 13:22:35 -05:00
Makefile
power-traces.c
ring_buffer.c
ring-buffer: User context bit recursion checking
2013-01-22 23:38:03 -05:00
ring_buffer_benchmark.c
rpm-traces.c
trace.c
tracing: Fix race with max_tr and changing tracers
2013-01-22 23:33:07 -05:00
trace.h
ring-buffer: User context bit recursion checking
2013-01-22 23:38:03 -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: Remove trace.h header from trace_clock.c
2013-01-22 12:06:56 -05:00
trace_entries.h
trace_event_perf.c
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
ftrace: Use only the preempt version of function tracing
2013-01-22 23:38:02 -05:00
trace_functions_graph.c
tracing/fgraph: Add max_graph_depth to limit function_graph depth
2013-01-21 13:22:34 -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
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