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Message-ID: <1623220863-58233-2-git-send-email-liuqi115@huawei.com>
Date: Wed, 9 Jun 2021 14:40:57 +0800
From: Qi Liu <liuqi115@...wei.com>
To: <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <will@...nel.org>
CC: <linuxarm@...wei.com>, Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: [PATCH v4 1/7] perf: Add EVENT_ATTR_ID to simplify event attributes
Similar EVENT_ATTR macros are defined in many PMU drivers,
like Arm PMU driver, Arm SMMU PMU driver. So add a generic
macro to simplify code.
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Signed-off-by: Qi Liu <liuqi115@...wei.com>
---
include/linux/perf_event.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index f5a6a2f..2d510ad 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1576,6 +1576,12 @@ static struct perf_pmu_events_attr _var = { \
.event_str = _str, \
};
+#define PMU_EVENT_ATTR_ID(_name, _show, _id) \
+ (&((struct perf_pmu_events_attr[]) { \
+ { .attr = __ATTR(_name, 0444, _show, NULL), \
+ .id = _id, } \
+ })[0].attr.attr)
+
#define PMU_FORMAT_ATTR(_name, _format) \
static ssize_t \
_name##_show(struct device *dev, \
--
2.7.4
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