Commit 4a53a67e authored by Leo Yan's avatar Leo Yan Committed by Namhyung Kim
Browse files

perf arm-spe: Set sample flags with supplement info 



Based on the supplement information in the record, this commit sets the
sample flags for conditional branch, function call, return.  It also
sets events in flags, such as mispredict, not taken, and in transaction.

Reviewed-by: default avatarIan Rogers <irogers@google.com>
Reviewed-by: default avatarJames Clark <james.clark@linaro.org>
Signed-off-by: default avatarLeo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/20250304111240.3378214-11-leo.yan@arm.com


Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
parent 5c1b1583

tools/perf/util/arm-spe.c

+20 −0
Original line number Diff line number Diff line
@@ -484,6 +484,26 @@ static void arm_spe__sample_flags(struct arm_spe_queue *speq) 


		if (record->type & ARM_SPE_BRANCH_MISS)

			speq->flags |= PERF_IP_FLAG_BRANCH_MISS;



		if (record->type & ARM_SPE_BRANCH_NOT_TAKEN)

			speq->flags |= PERF_IP_FLAG_NOT_TAKEN;



		if (record->type & ARM_SPE_IN_TXN)

			speq->flags |= PERF_IP_FLAG_IN_TX;



		if (record->op & ARM_SPE_OP_BR_COND)

			speq->flags |= PERF_IP_FLAG_CONDITIONAL;



		if (record->op & ARM_SPE_OP_BR_CR_BL)

			speq->flags |= PERF_IP_FLAG_CALL;

		else if (record->op & ARM_SPE_OP_BR_CR_RET)

			speq->flags |= PERF_IP_FLAG_RETURN;

		/*

		 * Indirect branch instruction without link (e.g. BR),

		 * take it as a function return.

		 */

		else if (record->op & ARM_SPE_OP_BR_INDIRECT)

			speq->flags |= PERF_IP_FLAG_RETURN;

	}

}