From: Cody P Schafer <c...@linux.vnet.ibm.com>
(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.
CC: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com>
CC: Haren Myneni <hb...@us.ibm.com>
CC: Cody P Schafer <d...@codyps.com>
Signed-off-by: Cody P Schafer <c...@linux.vnet.ibm.com>
---
include/linux/perf_event.h | 3 +++
kernel/events/core.c | 8 ++++++++
2 files changed, 11 insertions(+)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 893a0d0..da442a0 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -894,6 +894,9 @@ 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), \
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 733c616..9ef60e5 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -8210,6 +8210,14 @@ 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);
+ return sprintf(page, "%s\n", pmu_attr->event_str);
+}
+
static int __init perf_event_sysfs_init(void)
{
struct pmu *pmu;
--
1.8.3.1
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