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authorThomas Gleixner <tglx@linutronix.de>2019-08-21 22:09:04 +0300
committerThomas Gleixner <tglx@linutronix.de>2019-08-28 12:50:33 +0300
commit2b69942f9021bf75bd1b001f53bd2578361fadf3 (patch)
tree1d51a30bd34edc3c0a723a306199b1018e404db3 /kernel/fork.c
parentab693c5a5e3107f035d5162e6ada9aaf7dd76a1d (diff)
downloadlinux-2b69942f9021bf75bd1b001f53bd2578361fadf3.tar.xz
posix-cpu-timers: Create a container struct
Per task/process data of posix CPU timers is all over the place which makes the code hard to follow and requires ifdeffery. Create a container to hold all this information in one place, so data is consolidated and the ifdeffery can be confined to the posix timer header file and removed from places like fork. As a first step, move the cpu_timers list head array into the new struct and clean up the initializers and simplify fork. The remaining #ifdef in fork will be removed later. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lkml.kernel.org/r/20190821192920.819418976@linutronix.de
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index d8ae0f1b4148..b6a135e4275b 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1523,6 +1523,7 @@ void __cleanup_sighand(struct sighand_struct *sighand)
*/
static void posix_cpu_timers_init_group(struct signal_struct *sig)
{
+ struct posix_cputimers *pct = &sig->posix_cputimers;
unsigned long cpu_limit;
cpu_limit = READ_ONCE(sig->rlim[RLIMIT_CPU].rlim_cur);
@@ -1531,10 +1532,7 @@ static void posix_cpu_timers_init_group(struct signal_struct *sig)
sig->cputimer.running = true;
}
- /* The timer lists. */
- INIT_LIST_HEAD(&sig->cpu_timers[0]);
- INIT_LIST_HEAD(&sig->cpu_timers[1]);
- INIT_LIST_HEAD(&sig->cpu_timers[2]);
+ posix_cputimers_init(pct);
}
#else
static inline void posix_cpu_timers_init_group(struct signal_struct *sig) { }
@@ -1649,9 +1647,8 @@ static void posix_cpu_timers_init(struct task_struct *tsk)
tsk->cputime_expires.prof_exp = 0;
tsk->cputime_expires.virt_exp = 0;
tsk->cputime_expires.sched_exp = 0;
- INIT_LIST_HEAD(&tsk->cpu_timers[0]);
- INIT_LIST_HEAD(&tsk->cpu_timers[1]);
- INIT_LIST_HEAD(&tsk->cpu_timers[2]);
+
+ posix_cputimers_init(&tsk->posix_cputimers);
}
#else
static inline void posix_cpu_timers_init(struct task_struct *tsk) { }