posix_cpu_timer: consolidate expiry time type
The posix cpu timer expiry time is stored in a union of two types: a 64
bits field if we rely on scheduler precise accounting, or a cputime_t if
we rely on jiffies.
This results in quite some duplicate code and special cases to handle the
two types.
Just unify this into a single 64 bits field. cputime_t can always fit
into it.
Signed-off-by: Frederic Weisbecker <[email protected]>
Cc: Stanislaw Gruszka <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: KOSAKI Motohiro <[email protected]>
Cc: Olivier Langlois <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 7794d75e..907f3fd 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -7,14 +7,20 @@
#include <linux/timex.h>
#include <linux/alarmtimer.h>
-union cpu_time_count {
- cputime_t cpu;
- unsigned long long sched;
-};
+
+static inline unsigned long long cputime_to_expires(cputime_t expires)
+{
+ return (__force unsigned long long)expires;
+}
+
+static inline cputime_t expires_to_cputime(unsigned long long expires)
+{
+ return (__force cputime_t)expires;
+}
struct cpu_timer_list {
struct list_head entry;
- union cpu_time_count expires, incr;
+ unsigned long long expires, incr;
struct task_struct *task;
int firing;
};
