Ything-RepoMirrors/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-01-24 23:16:46 +00:00
Code Issues Packages Projects Releases Wiki Activity

tools headers UAPI: Sync linux/perf_event.h for deferred callchains

Browse Source 
It needs to sync with the kernel to support user space changes for the
deferred callchains.

Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Namhyung Kim
2025-11-20 15:47:59 -08:00
parent d9f2ce394c
commit 22b0ceee1c
1 changed files with 20 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
tools/include/uapi/linux/perf_event.h
View File

@@ -464,7 +464,9 @@ struct perf_event_attr {
inherit_thread : 1, /* children only inherit if cloned with CLONE_THREAD */
remove_on_exec : 1, /* event is removed from task on exec */
sigtrap : 1, /* send synchronous SIGTRAP on event */
__reserved_1 : 26;
defer_callchain: 1, /* request PERF_RECORD_CALLCHAIN_DEFERRED records */
defer_output : 1, /* output PERF_RECORD_CALLCHAIN_DEFERRED records */
__reserved_1 : 24;
union {
__u32 wakeup_events; /* wake up every n events */
@@ -1241,6 +1243,22 @@ enum perf_event_type {
*/
PERF_RECORD_AUX_OUTPUT_HW_ID = 21,
/*
* This user callchain capture was deferred until shortly before
* returning to user space. Previous samples would have kernel
* callchains only and they need to be stitched with this to make full
* callchains.
*
* struct {
* struct perf_event_header header;
* u64 cookie;
* u64 nr;
* u64 ips[nr];
* struct sample_id sample_id;
* };
*/
PERF_RECORD_CALLCHAIN_DEFERRED = 22,
PERF_RECORD_MAX, /* non-ABI */
};
@@ -1271,6 +1289,7 @@ enum perf_callchain_context {
PERF_CONTEXT_HV = (__u64)-32,
PERF_CONTEXT_KERNEL = (__u64)-128,
PERF_CONTEXT_USER = (__u64)-512,
PERF_CONTEXT_USER_DEFERRED = (__u64)-640,
PERF_CONTEXT_GUEST = (__u64)-2048,
PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176,