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posix-cpu-timers: Move expiry cache into struct posix_cputimers

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The expiry cache belongs into the posix_cputimers container where the other
cpu timers information is.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lkml.kernel.org/r/20190821192921.014444012@linutronix.de
This commit is contained in:
Thomas Gleixner 2019-08-21 21:09:06 +02:00
parent 9eacb5c7e6
commit 3a245c0f11
6 changed files with 56 additions and 53 deletions
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22
include/linux/posix-timers.h
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@ -62,24 +62,43 @@ static inline int clockid_to_fd(const clockid_t clk)
return ~(clk >> 3);
}
/*
* Alternate field names for struct task_cputime when used on cache
* expirations. Will go away soon.
*/
#define virt_exp utime
#define prof_exp stime
#define sched_exp sum_exec_runtime
#ifdef CONFIG_POSIX_TIMERS
/**
* posix_cputimers - Container for posix CPU timer related data
* @cputime_expires: Earliest-expiration cache
* @cpu_timers: List heads to queue posix CPU timers
*
* Used in task_struct and signal_struct
*/
struct posix_cputimers {
struct task_cputime cputime_expires;
struct list_head cpu_timers[CPUCLOCK_MAX];
};
static inline void posix_cputimers_init(struct posix_cputimers *pct)
{
memset(&pct->cputime_expires, 0, sizeof(pct->cputime_expires));
INIT_LIST_HEAD(&pct->cpu_timers[0]);
INIT_LIST_HEAD(&pct->cpu_timers[1]);
INIT_LIST_HEAD(&pct->cpu_timers[2]);
}
void posix_cputimers_group_init(struct posix_cputimers *pct, u64 cpu_limit);
static inline void posix_cputimers_rt_watchdog(struct posix_cputimers *pct,
u64 runtime)
{
pct->cputime_expires.sched_exp = runtime;
}
/* Init task static initializer */
#define INIT_CPU_TIMERLISTS(c) { \
LIST_HEAD_INIT(c.cpu_timers[0]), \
@ -94,6 +113,9 @@ static inline void posix_cputimers_init(struct posix_cputimers *pct)
#else
struct posix_cputimers { };
#define INIT_CPU_TIMERS(s)
static inline void posix_cputimers_init(struct posix_cputimers *pct) { }
static inline void posix_cputimers_group_init(struct posix_cputimers *pct,
u64 cpu_limit) { }
#endif
#define REQUEUE_PENDING 1