From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 25 Aug 2010 19:05:36 +0000 (-0300)
Subject: perf hists browser: replace rb_first() != NULL by !RB_EMPTY_ROOT()
X-Git-Tag: v2.6.37-rc1~214^2~101
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=293db47f4753f5746e5aaa998ceb24dff662cf7e;p=pandora-kernel.git

perf hists browser: replace rb_first() != NULL by !RB_EMPTY_ROOT()

Its way too stupid to use rb_first() for just caching if there are
children, use the cheaper RB_EMPTY_ROOT() instead.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

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