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authorThomas Gleixner <tglx@linutronix.de>2019-08-21 22:09:06 +0300
committerThomas Gleixner <tglx@linutronix.de>2019-08-28 12:50:35 +0300
commit3a245c0f110e2bfcf7f2cd2248a29005c78999e3 (patch)
treee567b3e5ebfc8d4abf1a5efc043290daf1d4021c /include/linux/posix-timers.h
parent9eacb5c7e6607aba00a7322b21cad83fc8b101c8 (diff)
downloadlinux-3a245c0f110e2bfcf7f2cd2248a29005c78999e3.tar.xz
posix-cpu-timers: Move expiry cache into struct posix_cputimers
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
Diffstat (limited to 'include/linux/posix-timers.h')
-rw-r--r--include/linux/posix-timers.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index cdef89750b2c..a3731ba15bce 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -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