diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/perf_event.h | 2 | ||||
| -rw-r--r-- | include/uapi/linux/perf_event.h | 6 |
2 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 6e89d11e340e..3cc93d7a708a 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -994,7 +994,7 @@ extern void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct extern struct perf_callchain_entry * get_perf_callchain(struct pt_regs *regs, u32 init_nr, bool kernel, bool user, u32 max_stack, bool crosstask, bool add_mark); -extern int get_callchain_buffers(void); +extern int get_callchain_buffers(int max_stack); extern void put_callchain_buffers(void); extern int sysctl_perf_event_max_stack; diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index 686da166aeec..a1cc04cb8d6e 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -270,6 +270,9 @@ enum perf_event_read_format { /* * Hardware event_id to monitor via a performance monitoring event: + * + * @sample_max_stack: Max number of frame pointers in a callchain, + * should be < /proc/sys/kernel/perf_event_max_stack */ struct perf_event_attr { @@ -380,7 +383,8 @@ struct perf_event_attr { * Wakeup watermark for AUX area */ __u32 aux_watermark; - __u32 __reserved_2; /* align to __u64 */ + __u16 sample_max_stack; + __u16 __reserved_2; /* align to __u64 */ }; #define perf_flags(attr) (*(&(attr)->read_format + 1)) |