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perf tools: Convert to LIBELF_SUPPORT

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For building perf without libelf, we can set NO_LIBELF=1 as a argument
of make.  It then defines NO_LIBELF_SUPPORT macro for C code to do the
proper handling.  However it usually used in a negative semantics -
e.g. #ifndef - so we saw double negations which can be misleading.
Convert it to a positive form to make it more readable.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1348824728-14025-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2012-09-28 18:31:59 +09:00 • committed by Arnaldo Carvalho de Melo
parent e4898336a1
commit 29a0fc9b2b
6 changed files with 13 additions and 14 deletions
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2
tools/perf/builtin-inject.c
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@ -194,7 +194,7 @@ static int perf_event__inject_buildid(struct perf_tool *tool,
* account this as unresolved.
*/
} else {
#ifndef NO_LIBELF_SUPPORT
#ifdef LIBELF_SUPPORT
pr_warning("no symbols found in %s, maybe "
"install a debug package?\n",
al.map->dso->long_name);