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| author | Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2013-12-11 12:44:40 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-12-16 14:37:50 +0100 |
| commit | c716832513f30430179b60ac5ffd203c53f7eb40 (patch) | |
| tree | c9b29a4b189b928661cca6751c72db5b29d07573 /arch/s390/kernel/perf_event.c | |
| parent | s390/oprofile: move hwsampler interfaces to cpu_mf.h (diff) | |
| download | linux-c716832513f30430179b60ac5ffd203c53f7eb40.tar.xz linux-c716832513f30430179b60ac5ffd203c53f7eb40.zip | |
s390/cpum_cf: Export event names in sysfs
Provide PMU event attributes for supported counters and export their symbolic
names to the sysfs "events" directory.
See the /sys/devices/cpum_cf/events/ directory for a list of available counters.
Note that you might require counter set authorizations for the LPAR to use them.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/perf_event.c')
| -rw-r--r-- | arch/s390/kernel/perf_event.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/s390/kernel/perf_event.c b/arch/s390/kernel/perf_event.c index 2343c218b8f9..4c1d336ce941 100644 --- a/arch/s390/kernel/perf_event.c +++ b/arch/s390/kernel/perf_event.c @@ -16,6 +16,7 @@ #include <linux/kvm_host.h> #include <linux/percpu.h> #include <linux/export.h> +#include <linux/sysfs.h> #include <asm/irq.h> #include <asm/cpu_mf.h> #include <asm/lowcore.h> @@ -172,3 +173,14 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry, __store_trace(entry, head, S390_lowcore.thread_info, S390_lowcore.thread_info + THREAD_SIZE); } + +/* Perf defintions for PMU event attributes in sysfs */ +ssize_t cpumf_events_sysfs_show(struct device *dev, + struct device_attribute *attr, char *page) +{ + struct perf_pmu_events_attr *pmu_attr; + + pmu_attr = container_of(attr, struct perf_pmu_events_attr, attr); + return sprintf(page, "event=0x%04llx,name=%s\n", + pmu_attr->id, attr->attr.name); +} |