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perf: Add PMU_FORMAT_ATTR_SHOW

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The macro PMU_FORMAT_ATTR facilitates the definition of both the "show"
function and "format_attr". But it only works for a non-hybrid platform.
For a hybrid platform, the name "format_attr_hybrid_" is used.

The definition of the "show" function can be shared between a non-hybrid
platform and a hybrid platform. Add a new macro PMU_FORMAT_ATTR_SHOW.

No functional change. The PMU_FORMAT_ATTR_SHOW will be used in the
following patch.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230104201349.1451191-1-kan.liang@linux.intel.com
This commit is contained in:
Kan Liang 2023-01-04 12:13:41 -08:00 committed by Ingo Molnar
parent 8e791f7eba
commit b6c00fb994
1 changed files with 4 additions and 1 deletions
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5
include/linux/perf_event.h
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@ -1724,7 +1724,7 @@ static struct perf_pmu_events_attr _var = { \
.id = _id, } \
})[0].attr.attr)
#define PMU_FORMAT_ATTR(_name, _format) \
#define PMU_FORMAT_ATTR_SHOW(_name, _format) \
static ssize_t \
_name##_show(struct device *dev, \
struct device_attribute *attr, \
@ -1733,6 +1733,9 @@ _name##_show(struct device *dev, \
BUILD_BUG_ON(sizeof(_format) >= PAGE_SIZE); \
return sprintf(page, _format "\n"); \
} \
#define PMU_FORMAT_ATTR(_name, _format) \
PMU_FORMAT_ATTR_SHOW(_name, _format) \
\
static struct device_attribute format_attr_##_name = __ATTR_RO(_name)