linux/arch/cris
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
..
arch-v10 vfs: define struct filename and have getname() return it 2012-10-12 20:14:55 -04:00
arch-v32 vfs: define struct filename and have getname() return it 2012-10-12 20:14:55 -04:00
boot Fix common misspellings 2011-03-31 11:26:23 -03:00
configs kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
include tracing,x86: Add a TSC trace_clock 2012-11-13 15:48:27 -05:00
kernel cris: Add missing RCU idle APIs on idle loop 2012-09-23 07:44:44 -07:00
mm readahead: fault retry breaks mmap file read random detection 2012-10-09 16:22:47 +09:00
Kconfig Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-14 13:39:34 -07:00
Kconfig.debug Kconfig: remove a few puzzling comments 2011-10-31 10:58:48 +01:00
Makefile UAPI: Partition the header include path sets and add uapi/ header directories 2012-10-02 18:01:26 +01:00