[tip: perf/urgent] perf diff: Use llabs() with 64-bit values

[tip-bot2 for Arnaldo Carvalho de Melo]

The following commit has been merged into the perf/urgent branch of tip:

Commit-ID:     2b1ac6403f8800babed0f16ab1d29ee3300be122
Gitweb:        https://git.kernel.org/tip/2b1ac6403f8800babed0f16ab1d29ee3300be122
Author:        Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate:    Wed, 27 Nov 2019 09:58:22 -03:00
Committer:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitterDate: Thu, 28 Nov 2019 08:08:38 -03:00

perf diff: Use llabs() with 64-bit values

To fix this build error on a debian mipsel cross build environment:

  builtin-diff.c: In function 'compute_cycles_diff':
  builtin-diff.c:649:10: error: absolute value function 'labs' given an argument of type 's64' {aka 'long long int'} but has parameter of type 'long int' which may cause truncation of value [-Werror=absolute-value]
    649 |    val = labs(pair->block_info->cycles_spark[i] -
        |          ^~~~

Fixes: cebf7d51a6c3 ("perf diff: Report noisy for cycles diff")
Cc: Jin Yao <yao.jin@xxxxxxxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-pn7szy5uw384ntjgk6zckh6a@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/builtin-diff.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index eae8793..f8b6ae5 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -646,7 +646,7 @@ static void compute_cycles_diff(struct hist_entry *he,
 			if (i >= he->block_info->num || i >= NUM_SPARKS)
 				break;
 
-			val = labs(pair->block_info->cycles_spark[i] -
+			val = llabs(pair->block_info->cycles_spark[i] -
 				     he->block_info->cycles_spark[i]);
 
 			update_spark_value(pair->diff.svals, NUM_SPARKS,