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Commit fd979c01 authored by Cody P Schafer's avatar Cody P Schafer Committed by Michael Ellerman
Browse files

perf: provide sysfs_show for struct perf_pmu_events_attr 



(struct perf_pmu_events_attr) is defined in include/linux/perf_event.h,
but the only "show" for it is in x86 and contains x86 specific stuff.

Make a generic one for those of us who are just using the event_str.

Signed-off-by: default avatarCody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: default avatarSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Acked-by: default avatarJiri Olsa <jolsa@redhat.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent fe12545e

include/linux/perf_event.h

+3 −0
Original line number Diff line number Diff line
@@ -897,6 +897,9 @@ struct perf_pmu_events_attr { 
	const char *event_str;

};



ssize_t perf_event_sysfs_show(struct device *dev, struct device_attribute *attr,

			      char *page);



#define PMU_EVENT_ATTR(_name, _var, _id, _show)				\

static struct perf_pmu_events_attr _var = {				\

	.attr = __ATTR(_name, 0444, _show, NULL),			\

kernel/events/core.c

+12 −0
Original line number Diff line number Diff line
@@ -8276,6 +8276,18 @@ void __init perf_event_init(void) 
		     != 1024);

}



ssize_t perf_event_sysfs_show(struct device *dev, struct device_attribute *attr,

			      char *page)

{

	struct perf_pmu_events_attr *pmu_attr =

		container_of(attr, struct perf_pmu_events_attr, attr);



	if (pmu_attr->event_str)

		return sprintf(page, "%s\n", pmu_attr->event_str);



	return 0;

}



static int __init perf_event_sysfs_init(void)

{

	struct pmu *pmu;