[PATCH 1/2] perf annotate: Treat 'call' instruction as stack operation

[Namhyung Kim <namhyung@kernel.org>]

I found some portion of mem-store events sampled on CALL instruction
which has no memory access.  But it actually saves a return address
into stack.  It should be considered as a stack operation like RET
instruction.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/util/annotate.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 4990c70b1794d7a9..1a347a711dcf5c62 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -2474,6 +2474,7 @@ static bool is_stack_operation(struct arch *arch, struct disasm_line *dl)
 	if (arch__is(arch, "x86")) {
 		if (!strncmp(dl->ins.name, "push", 4) ||
 		    !strncmp(dl->ins.name, "pop", 3) ||
+		    !strncmp(dl->ins.name, "call", 4) ||
 		    !strncmp(dl->ins.name, "ret", 3))
 			return true;
 	}
-- 
2.46.0.598.g6f2099f65c-goog