From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 24 Mar 2010 19:40:15 +0000 (-0300)
Subject: perf symbols: Avoid unnecessary symbol loading when dso list is specified
X-Git-Tag: v2.6.35-rc1~522^2~151
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=96415e4d3f5fdf9cdb12eedfcbc58152b1e1458c;p=pandora-kernel.git

perf symbols: Avoid unnecessary symbol loading when dso list is specified

We were performing the full thread__find_addr_location
operation, i.e. resolving to a map/dso _and_ loading its symbols
when we can optimize it by first calling thread__find_addr_map
to find just the map/dso, check if it is one that we are
interested in (passed via --dsos/-d in 'perf annotate', 'perf
report', etc) and if not avoid loading the symtab.

Nice speedup when we know which DSO we're interested in.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1269459619-982-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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