From: David Miller <davem@davemloft.net>
Date: Fri, 12 Oct 2018 05:46:55 +0000 (-0700)
Subject: perf cpu_map: Align cpu map synthesized events properly.
X-Git-Tag: v4.9.137~120
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1c696b9797fb97d4540c9f7ac035722ad560622b;p=platform%2Fkernel%2Flinux-amlogic.git

perf cpu_map: Align cpu map synthesized events properly.

[ Upstream commit 0ed149cf5239cc6e7e65bf00f769e8f1e91076c0 ]

The size of the resulting cpu map can be smaller than a multiple of
sizeof(u64), resulting in SIGBUS on cpus like Sparc as the next event
will not be aligned properly.

Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Fixes: 6c872901af07 ("perf cpu_map: Add cpu_map event synthesize function")
Link: http://lkml.kernel.org/r/20181011.224655.716771175766946817.davem@davemloft.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 6631923..2d5744d 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -839,6 +839,7 @@ void *cpu_map_data__alloc(struct cpu_map *map, size_t *size, u16 *type, int *max
 	}
 
 	*size += sizeof(struct cpu_map_data);
+	*size = PERF_ALIGN(*size, sizeof(u64));
 	return zalloc(*size);
 }