From: Steven Rostedt <srostedt@redhat.com>
Date: Wed, 3 Jun 2009 15:10:44 +0000 (-0400)
Subject: tracing: add annotation to what type of stack trace is recorded
X-Git-Tag: v2.6.31-rc1~401^2~10^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=563af16c30ede41eda2d614195d88e07f7c7103d;p=pandora-kernel.git

tracing: add annotation to what type of stack trace is recorded

The current method of printing out a stack trace is to add a new line
and print out the trace:

    yum-updatesd-3120  [002]   573.691303:
 => do_softirq
 => irq_exit
 => smp_apic_timer_interrupt
 => apic_timer_interrupt

This looks a bit awkward, and if we have both stack and user stack traces
running, it would be nice to have a title to tell them apart, although
it is easy to tell by the output.

This patch adds an annotation to the start of the stack traces:

            init-1     [003]   929.304979: <stack trace>
 => user_path_at
 => vfs_fstatat
 => vfs_stat
 => sys_newstat
 => system_call_fastpath

             cat-3459  [002]  1016.824040: <user stack trace>
 =>  <0000003aae6c0250>
 =>  <00007ffff4b06ae4>
 =>  <69636172742f6775>

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

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