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tools headers: Sync uapi/linux/prctl.h with the kernel source

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To pick up the changes in these csets:

  5ca243f6e3 ("prctl: add arch-agnostic prctl()s for indirect branch tracking")
  28621ec2d4 ("rseq: Add prctl() to enable time slice extensions")

That don't introduced these new prctls:

  $ tools/perf/trace/beauty/prctl_option.sh > before.txt
  $ cp include/uapi/linux/prctl.h tools/perf/trace/beauty/include/uapi/linux/prctl.h
  $ tools/perf/trace/beauty/prctl_option.sh > after.txt
  $ diff -u before.txt after.txt
  --- before.txt	2026-02-27 09:07:16.435611457 -0300
  +++ after.txt	2026-02-27 09:07:28.189816531 -0300
  @@ -73,6 +73,10 @@
   	[76] = "LOCK_SHADOW_STACK_STATUS",
   	[77] = "TIMER_CREATE_RESTORE_IDS",
   	[78] = "FUTEX_HASH",
  +	[79] = "RSEQ_SLICE_EXTENSION",
  +	[80] = "GET_INDIR_BR_LP_STATUS",
  +	[81] = "SET_INDIR_BR_LP_STATUS",
  +	[82] = "LOCK_INDIR_BR_LP_STATUS",
   };
   static const char *prctl_set_mm_options[] = {
   	[1] = "START_CODE",
  $

That now will be used to decode the syscall option and also to compose
filters, for instance:

  [root@five ~]# perf trace -e syscalls:sys_enter_prctl --filter option==SET_NAME
       0.000 Isolated Servi/3474327 syscalls:sys_enter_prctl(option: SET_NAME, arg2: 0x7f23f13b7aee)
       0.032 DOM Worker/3474327 syscalls:sys_enter_prctl(option: SET_NAME, arg2: 0x7f23deb25670)
       7.920 :3474328/3474328 syscalls:sys_enter_prctl(option: SET_NAME, arg2: 0x7f23e24fbb10)
       7.935 StreamT~s #374/3474328 syscalls:sys_enter_prctl(option: SET_NAME, arg2: 0x7f23e24fb970)
       8.400 Isolated Servi/3474329 syscalls:sys_enter_prctl(option: SET_NAME, arg2: 0x7f23e24bab10)
       8.418 StreamT~s #374/3474329 syscalls:sys_enter_prctl(option: SET_NAME, arg2: 0x7f23e24ba970)
  ^C[root@five ~]#

This addresses these perf build warnings:

  Warning: Kernel ABI header differences:
    diff -u tools/perf/trace/beauty/include/uapi/linux/prctl.h include/uapi/linux/prctl.h

Please see tools/include/uapi/README for further details.

Cc: Deepak Gupta <debug@rivosinc.com>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2026-02-27 09:08:14 -03:00
parent 0031c06807
commit cfdf6456c0
1 changed files with 37 additions and 0 deletions
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tools/perf/trace/beauty/include/uapi/linux/prctl.h
+37
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@@ -386,4 +386,41 @@ struct prctl_mm_map {
# define PR_FUTEX_HASH_SET_SLOTS 1
# define PR_FUTEX_HASH_GET_SLOTS 2
/* RSEQ time slice extensions */
#define PR_RSEQ_SLICE_EXTENSION 79
# define PR_RSEQ_SLICE_EXTENSION_GET 1
# define PR_RSEQ_SLICE_EXTENSION_SET 2
/*
* Bits for RSEQ_SLICE_EXTENSION_GET/SET
* PR_RSEQ_SLICE_EXT_ENABLE: Enable
*/
# define PR_RSEQ_SLICE_EXT_ENABLE 0x01
/*
* Get the current indirect branch tracking configuration for the current
* thread, this will be the value configured via PR_SET_INDIR_BR_LP_STATUS.
*/
#define PR_GET_INDIR_BR_LP_STATUS 80
/*
* Set the indirect branch tracking configuration. PR_INDIR_BR_LP_ENABLE will
* enable cpu feature for user thread, to track all indirect branches and ensure
* they land on arch defined landing pad instruction.
* x86 - If enabled, an indirect branch must land on an ENDBRANCH instruction.
* arch64 - If enabled, an indirect branch must land on a BTI instruction.
* riscv - If enabled, an indirect branch must land on an lpad instruction.
* PR_INDIR_BR_LP_DISABLE will disable feature for user thread and indirect
* branches will no more be tracked by cpu to land on arch defined landing pad
* instruction.
*/
#define PR_SET_INDIR_BR_LP_STATUS 81
# define PR_INDIR_BR_LP_ENABLE (1UL << 0)
/*
* Prevent further changes to the specified indirect branch tracking
* configuration. All bits may be locked via this call, including
* undefined bits.
*/
#define PR_LOCK_INDIR_BR_LP_STATUS 82
#endif /* _LINUX_PRCTL_H */