kernel-ark/kernel/trace
David Sharp 8cbd9cc625 tracing,x86: Add a TSC trace_clock
In order to promote interoperability between userspace tracers and ftrace,
add a trace_clock that reports raw TSC values which will then be recorded
in the ring buffer. Userspace tracers that also record TSCs are then on
exactly the same time base as the kernel and events can be unambiguously
interlaced.

Tested: Enabled a tracepoint and the "tsc" trace_clock and saw very large
timestamp values.

v2:
Move arch-specific bits out of generic code.
v3:
Rename "x86-tsc", cleanups
v7:
Generic arch bits in Kbuild.

Google-Bug-Id: 6980623
Link: http://lkml.kernel.org/r/1352837903-32191-1-git-send-email-dhsharp@google.com

Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@linux.intel.com>
Signed-off-by: David Sharp <dhsharp@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2012-11-13 15:48:27 -05:00
..
blktrace.c
ftrace.c tracing: Allow tracers to start at core initcall 2012-10-31 16:45:24 -04:00
Kconfig tracing: Use irq_work for wake ups and remove *_nowake_*() functions 2012-11-02 10:21:52 -04:00
Makefile trace: Stop compiling in trace_clock unconditionally 2012-09-13 22:52:08 -04:00
power-traces.c
ring_buffer_benchmark.c
ring_buffer.c ring-buffer: Change unsigned long type of ring_buffer_oldest_event_ts() to u64 2012-11-02 10:21:48 -04:00
rpm-traces.c
trace_branch.c tracing: Cache comms only after an event occurred 2012-10-31 16:45:31 -04:00
trace_clock.c
trace_entries.h
trace_event_perf.c perf/core improvements and fixes: 2012-08-21 11:27:00 +02:00
trace_events_filter_test.h
trace_events_filter.c tracing: Replace strict_strto* with kstrto* 2012-10-31 16:45:23 -04:00
trace_events.c tracing: Use irq_work for wake ups and remove *_nowake_*() functions 2012-11-02 10:21:52 -04:00
trace_export.c
trace_functions_graph.c tracing: Cache comms only after an event occurred 2012-10-31 16:45:31 -04:00
trace_functions.c tracing: Allow tracers to start at core initcall 2012-10-31 16:45:24 -04:00
trace_irqsoff.c tracing: Change tracer's integer flags to bool 2012-10-31 16:45:25 -04:00
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: Register the ftrace internal events during early boot 2012-06-14 15:22:14 -04:00
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 tracing: Change tracer's integer flags to bool 2012-10-31 16:45:25 -04:00
trace_selftest_dynamic.c
trace_selftest.c tracing: Use irq_work for wake ups and remove *_nowake_*() functions 2012-11-02 10:21:52 -04:00
trace_stack.c ftrace: Add default recursion protection for function tracing 2012-07-31 10:29:52 -04:00
trace_stat.c
trace_stat.h
trace_syscalls.c tracing: Cleanup unnecessary function declarations 2012-10-31 16:45:34 -04:00
trace_uprobe.c tracing: Replace strict_strto* with kstrto* 2012-10-31 16:45:23 -04:00
trace.c tracing,x86: Add a TSC trace_clock 2012-11-13 15:48:27 -05:00
trace.h tracing: Use irq_work for wake ups and remove *_nowake_*() functions 2012-11-02 10:21:52 -04:00