From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 26 Feb 2009 17:47:11 +0000 (+0100)
Subject: tracing: implement trace_clock_*() APIs
X-Git-Tag: v2.6.30-rc1~2^2~79
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=14131f2f98ac350ee9e73faed916d2238a8b6a0d;p=pandora-kernel.git

tracing: implement trace_clock_*() APIs

Impact: implement new tracing timestamp APIs

Add three trace clock variants, with differing scalability/precision
tradeoffs:

 -   local: CPU-local trace clock
 -  medium: scalable global clock with some jitter
 -  global: globally monotonic, serialized clock

Make the ring-buffer use the local trace clock internally.

Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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