android_kernel_motorola_sm6375/kernel/trace
Repository files (latest commit first)
Filename Latest commit message Latest commit date
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