linux-kernel - [tip:perf/core] perf unwind: Remove unnecessary test

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Message-ID: <tip-e2736219e6ca3117e10651e215b96d66775220da@git.kernel.org>
Date:   Fri, 16 Aug 2019 14:01:07 -0700
From:   tip-bot for John Keeping <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     namhyung@...nel.org, linux-kernel@...r.kernel.org,
        mingo@...nel.org, alexander.shishkin@...ux.intel.com,
        khlebnikov@...dex-team.ru, peterz@...radead.org, acme@...hat.com,
        jolsa@...nel.org, john@...anate.com, hpa@...or.com,
        tglx@...utronix.de
Subject: [tip:perf/core] perf unwind: Remove unnecessary test

Commit-ID:  e2736219e6ca3117e10651e215b96d66775220da
Gitweb:     https://git.kernel.org/tip/e2736219e6ca3117e10651e215b96d66775220da
Author:     John Keeping <john@...anate.com>
AuthorDate: Thu, 15 Aug 2019 11:01:46 +0100
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Fri, 16 Aug 2019 12:30:14 -0300

perf unwind: Remove unnecessary test

If dwarf_callchain_users is false, then unwind__prepare_access() will
not set unwind_libunwind_ops so the remaining test here is sufficient.

Signed-off-by: John Keeping <john@...anate.com>
Reviewed-by: Jiri Olsa <jolsa@...nel.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: john keeping <john@...anate.com>
Link: http://lkml.kernel.org/r/20190815100146.28842-3-john@metanate.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/unwind-libunwind.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c
index b843f9d0a9ea..6499b22b158b 100644
--- a/tools/perf/util/unwind-libunwind.c
+++ b/tools/perf/util/unwind-libunwind.c
@@ -69,18 +69,12 @@ out_register:
 
 void unwind__flush_access(struct map_groups *mg)
 {
-	if (!dwarf_callchain_users)
-		return;
-
 	if (mg->unwind_libunwind_ops)
 		mg->unwind_libunwind_ops->flush_access(mg);
 }
 
 void unwind__finish_access(struct map_groups *mg)
 {
-	if (!dwarf_callchain_users)
-		return;
-
 	if (mg->unwind_libunwind_ops)
 		mg->unwind_libunwind_ops->finish_access(mg);
 }