linux-kernel - [PATCH v1] perf arm_spe: Add a macro definition to handle offset value

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Message-Id: <20251016083019.27935-1-tanze@kylinos.cn>
Date: Thu, 16 Oct 2025 16:30:19 +0800
From: tanze <tanze@...inos.cn>
To: james.clark@...aro.org
Cc: linux-arm-kernel@...ts.infradead.org,
	linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	graham.woodward@....com,
	tanze <tanze@...inos.cn>
Subject: [PATCH v1] perf arm_spe: Add a macro definition to handle offset value

Add a macro definition SPE_SYNTH_ID_OFFSET to handle the offset value
and improve readability.

Signed-off-by: tanze <tanze@...inos.cn>
---
 tools/perf/util/arm-spe.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c
index 71be979f5077..645048ac7708 100644
--- a/tools/perf/util/arm-spe.c
+++ b/tools/perf/util/arm-spe.c
@@ -36,6 +36,7 @@
 
 #include "../../arch/arm64/include/asm/cputype.h"
 #define MAX_TIMESTAMP (~0ULL)
+#define SPE_SYNTH_ID_OFFSET (1000000000ULL)
 
 #define is_ldst_op(op)		(!!((op) & ARM_SPE_OP_LDST))
 
@@ -1732,7 +1733,7 @@ arm_spe_synth_events(struct arm_spe *spe, struct perf_session *session)
 	attr.sample_period = spe->synth_opts.period;
 
 	/* create new id val to be a fixed offset from evsel id */
-	id = evsel->core.id[0] + 1000000000;
+	id = evsel->core.id[0] + SPE_SYNTH_ID_OFFSET;
 
 	if (!id)
 		id = 1;
-- 
2.25.1