diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2025-12-15 19:52:15 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-01-22 13:11:17 +0300 |
| commit | 99d2592023e5d0a31f5f5a83c694df48239a1e6c (patch) | |
| tree | f58a294e6f752c04fdf00f9d6c7360380722d4d4 /scripts | |
| parent | 28621ec2d46c6adf7d33a6facbd83e2fa566bd34 (diff) | |
| download | linux-99d2592023e5d0a31f5f5a83c694df48239a1e6c.tar.xz | |
rseq: Implement sys_rseq_slice_yield()
Provide a new syscall which has the only purpose to yield the CPU after the
kernel granted a time slice extension.
sched_yield() is not suitable for that because it unconditionally
schedules, but the end of the time slice extension is not required to
schedule when the task was already preempted. This also allows to have a
strict check for termination to catch user space invoking random syscalls
including sched_yield() from a time slice extension region.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20251215155708.929634896@linutronix.de
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/syscall.tbl | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/syscall.tbl b/scripts/syscall.tbl index e74868be513c..7a42b32b6577 100644 --- a/scripts/syscall.tbl +++ b/scripts/syscall.tbl @@ -411,3 +411,4 @@ 468 common file_getattr sys_file_getattr 469 common file_setattr sys_file_setattr 470 common listns sys_listns +471 common rseq_slice_yield sys_rseq_slice_yield |