Commit b6c00fb9 authored by Kan Liang's avatar Kan Liang Committed by Ingo Molnar
Browse files

perf: Add PMU_FORMAT_ATTR_SHOW 



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: default avatarKan Liang <kan.liang@linux.intel.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230104201349.1451191-1-kan.liang@linux.intel.com
parent 8e791f7e

include/linux/perf_event.h

+4 −1
Original line number Diff line number Diff line
@@ -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)