From: Arnaldo Carvalho de Melo Date: Fri, 27 Feb 2026 12:08:14 +0000 (-0300) Subject: tools headers: Sync uapi/linux/prctl.h with the kernel source X-Git-Tag: v7.0-rc4~21^2~21 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=cfdf6456c0aca337ff05cb1eb6e6f453e1d9dea1;p=thirdparty%2Fkernel%2Fstable.git tools headers: Sync uapi/linux/prctl.h with the kernel source To pick up the changes in these csets: 5ca243f6e3c30b97 ("prctl: add arch-agnostic prctl()s for indirect branch tracking") 28621ec2d46c6adf ("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 Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Thomas Gleixner Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/trace/beauty/include/uapi/linux/prctl.h b/tools/perf/trace/beauty/include/uapi/linux/prctl.h index 51c4e8c82b1e9..55b0446fff9d9 100644 --- a/tools/perf/trace/beauty/include/uapi/linux/prctl.h +++ b/tools/perf/trace/beauty/include/uapi/linux/prctl.h @@ -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 */