perf buildid-cache: Check relocation when checking for existing kcore
authorAdrian Hunter <adrian.hunter@intel.com>
Wed, 29 Jan 2014 14:14:44 +0000 (16:14 +0200)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Fri, 31 Jan 2014 20:21:54 +0000 (17:21 -0300)
commitd3b70220292c40d3b499797fd2f33f608fc35edb
treefd8198cd128aa99e87c73515a3330d57a097734c
parentd9b62aba87a82939c73f451a166c7a21342350d6
perf buildid-cache: Check relocation when checking for existing kcore

perf buildid-cache does not make another copy of kcore if the buildid
and modules match an existing copy.

That does not take into account the possibility that the kernel has been
relocated.

Extend the check to check if the reference relocation symbol matches
too, otherwise do make a copy.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1391004884-10334-10-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/builtin-buildid-cache.c