From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Wed, 3 Dec 2008 01:30:37 +0000 (+0100)
Subject: tracing/function-graph-tracer: display unified style cmdline and pid
X-Git-Tag: v2.6.29-rc1~586^2~34^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11e84acc400921743cc8d488e4a265cd98a655c7;p=pandora-kernel.git

tracing/function-graph-tracer: display unified style cmdline and pid

Impact: extend function-graph output: let one know which thread called a function

This patch implements a helper function to print the couple cmdline/pid.
Its output is provided during task switching and on each row if the new
"funcgraph-proc" defualt-off option is set through trace_options file.

The output is center aligned and never exceeds 14 characters. The cmdline
is truncated over 7 chars.
But note that if the pid exceeds 6 characters, the column will overflow (but
the situation is abnormal).

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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