diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2024-11-05 09:14:48 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-11-07 02:14:45 +0100 |
| commit | 647da5f709f112319c0d51e06f330d8afecb1940 (patch) | |
| tree | d4e72435fc95dfd2879d0197782f64c5299ca1b8 /include | |
| parent | signal: Cleanup unused posix-timer leftovers (diff) | |
| download | linux-647da5f709f112319c0d51e06f330d8afecb1940.tar.gz linux-647da5f709f112319c0d51e06f330d8afecb1940.zip | |
posix-timers: Move sequence logic into struct k_itimer
The posix timer signal handling uses siginfo::si_sys_private for handling
the sequence counter check. That indirection is not longer required and the
sequence count value at signal queueing time can be stored in struct
k_itimer itself.
This removes the requirement of treating siginfo::si_sys_private special as
it's now always zero as the kernel does not touch it anymore.
Suggested-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Link: https://lore.kernel.org/all/20241105064213.852619866@linutronix.de
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/posix-timers.h | 2 | ||||
| -rw-r--r-- | include/uapi/asm-generic/siginfo.h | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 28c0a30e0853..49a89614d900 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -162,6 +162,7 @@ static inline void posix_cputimers_init_work(void) { } * @it_overrun: The overrun counter for pending signals * @it_overrun_last: The overrun at the time of the last delivered signal * @it_signal_seq: Sequence count to control signal delivery + * @it_sigqueue_seq: The sequence count at the point where the signal was queued * @it_sigev_notify: The notify word of sigevent struct for signal delivery * @it_interval: The interval for periodic timers * @it_signal: Pointer to the creators signal struct @@ -184,6 +185,7 @@ struct k_itimer { s64 it_overrun; s64 it_overrun_last; unsigned int it_signal_seq; + unsigned int it_sigqueue_seq; int it_sigev_notify; enum pid_type it_pid_type; ktime_t it_interval; diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h index b7bc545ec3b2..5a1ca43b5fc6 100644 --- a/include/uapi/asm-generic/siginfo.h +++ b/include/uapi/asm-generic/siginfo.h @@ -46,7 +46,7 @@ union __sifields { __kernel_timer_t _tid; /* timer id */ int _overrun; /* overrun count */ sigval_t _sigval; /* same as below */ - int _sys_private; /* not to be passed to user */ + int _sys_private; /* Not used by the kernel. Historic leftover. Always 0. */ } _timer; /* POSIX.1b signals */ |