Commit-ID:  a7fde09a78a8ae40b81cfb5096c3cefef6c078c9
Gitweb:     http://git.kernel.org/tip/a7fde09a78a8ae40b81cfb5096c3cefef6c078c9
Author:     Adrian Hunter <[email protected]>
AuthorDate: Tue, 14 Jul 2015 15:32:41 +0300
Committer:  Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Wed, 15 Jul 2015 11:57:28 -0300

perf auxtrace: Fix misplaced check for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT

Move the checking for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT for AUX area mmaps
until after checking if such mmaps are used anyway.

Reported-by: Alexey Brodkin <[email protected]>
Signed-off-by: Adrian Hunter <[email protected]>
Tested-by: Alexey Brodkin <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/util/auxtrace.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index 7e7405c..83d9dd9 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -53,11 +53,6 @@ int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
 {
        struct perf_event_mmap_page *pc = userpg;
 
-#if BITS_PER_LONG != 64 && !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
-       pr_err("Cannot use AUX area tracing mmaps\n");
-       return -1;
-#endif
-
        WARN_ONCE(mm->base, "Uninitialized auxtrace_mmap\n");
 
        mm->userpg = userpg;
@@ -73,6 +68,11 @@ int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
                return 0;
        }
 
+#if BITS_PER_LONG != 64 && !defined(HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT)
+       pr_err("Cannot use AUX area tracing mmaps\n");
+       return -1;
+#endif
+
        pc->aux_offset = mp->offset;
        pc->aux_size = mp->len;
 
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