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authorNamhyung Kim <namhyung.kim@lge.com>2012-09-28 18:32:00 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-10-02 17:56:01 -0300
commit95485b1cda827e4db7102ad5fde1791087a0f4c5 (patch)
tree63ea6df23c175b2780c491092b0bcf9bd7dd4746 /tools/perf/util/unwind.h
parent29a0fc9b2b6084e7a8810481df62a0fa496d8957 (diff)
downloadop-kernel-dev-95485b1cda827e4db7102ad5fde1791087a0f4c5.zip
op-kernel-dev-95485b1cda827e4db7102ad5fde1791087a0f4c5.tar.gz
perf tools: Convert to LIBUNWIND_SUPPORT
For building perf without libunwind, we can set NO_LIBUNWIND=1 as a argument of make. It then defines NO_LIBUNWIND_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. Also change NO_PERF_REGS macro to HAVE_PERF_REGS for the same reason. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1348824728-14025-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/unwind.h')
-rw-r--r--tools/perf/util/unwind.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/util/unwind.h b/tools/perf/util/unwind.h
index a78c8b3..cb6bc50 100644
--- a/tools/perf/util/unwind.h
+++ b/tools/perf/util/unwind.h
@@ -13,7 +13,7 @@ struct unwind_entry {
typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
-#ifndef NO_LIBUNWIND_SUPPORT
+#ifdef LIBUNWIND_SUPPORT
int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
struct machine *machine,
struct thread *thread,
@@ -31,5 +31,5 @@ unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
{
return 0;
}
-#endif /* NO_LIBUNWIND_SUPPORT */
+#endif /* LIBUNWIND_SUPPORT */
#endif /* __UNWIND_H */
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