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authorAl Viro <viro@ZenIV.linux.org.uk>2017-06-07 09:42:28 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-06-14 00:00:40 +0200
commit192a82f9003fe8fabd6088aa646e829225a94c55 (patch)
tree86c755bd9c5ef78d53006bc75170030b092297a8 /kernel/time
parent15f27ce24cb613e6e01ce27c4094c55e55dde5d4 (diff)
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hrtimer_nanosleep(): Pass rmtp in restart_block
Store the pointer to the timespec which gets updated with the remaining time in the restart block and remove the function argument. [ tglx: Added changelog ] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170607084241.28657-3-viro@ZenIV.linux.org.uk
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/hrtimer.c11
-rw-r--r--kernel/time/posix-stubs.c5
-rw-r--r--kernel/time/posix-timers.c5
3 files changed, 14 insertions, 7 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index ac053bb5296e..4ae777f159de 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -1503,10 +1503,11 @@ out:
return ret;
}
-long hrtimer_nanosleep(struct timespec64 *rqtp, struct timespec __user *rmtp,
+long hrtimer_nanosleep(struct timespec64 *rqtp,
const enum hrtimer_mode mode, const clockid_t clockid)
{
- struct restart_block *restart;
+ struct restart_block *restart = &current->restart_block;
+ struct timespec __user *rmtp;
struct hrtimer_sleeper t;
int ret = 0;
u64 slack;
@@ -1526,16 +1527,15 @@ long hrtimer_nanosleep(struct timespec64 *rqtp, struct timespec __user *rmtp,
goto out;
}
+ rmtp = restart->nanosleep.rmtp;
if (rmtp) {
ret = update_rmtp(&t.timer, rmtp);
if (ret <= 0)
goto out;
}
- restart = &current->restart_block;
restart->fn = hrtimer_nanosleep_restart;
restart->nanosleep.clockid = t.timer.base->clockid;
- restart->nanosleep.rmtp = rmtp;
restart->nanosleep.expires = hrtimer_get_expires_tv64(&t.timer);
ret = -ERESTART_RESTARTBLOCK;
@@ -1557,7 +1557,8 @@ SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp,
if (!timespec64_valid(&tu64))
return -EINVAL;
- return hrtimer_nanosleep(&tu64, rmtp, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
+ current->restart_block.nanosleep.rmtp = rmtp;
+ return hrtimer_nanosleep(&tu64, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
}
/*
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c
index c0cd53eb018a..156a5e6f3bd2 100644
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -115,7 +115,10 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
t64 = timespec_to_timespec64(t);
if (!timespec64_valid(&t64))
return -EINVAL;
- return hrtimer_nanosleep(&t64, rmtp, flags & TIMER_ABSTIME ?
+ if (flags & TIMER_ABSTIME)
+ rmtp = NULL;
+ current->restart_block.nanosleep.rmtp = rmtp;
+ return hrtimer_nanosleep(&t64, flags & TIMER_ABSTIME ?
HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
which_clock);
default:
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 58c0f60b132f..1a9f59f8afc2 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1043,7 +1043,10 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
static int common_nsleep(const clockid_t which_clock, int flags,
struct timespec64 *tsave, struct timespec __user *rmtp)
{
- return hrtimer_nanosleep(tsave, rmtp, flags & TIMER_ABSTIME ?
+ if (flags & TIMER_ABSTIME)
+ rmtp = NULL;
+ current->restart_block.nanosleep.rmtp = rmtp;
+ return hrtimer_nanosleep(tsave, flags & TIMER_ABSTIME ?
HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
which_clock);
}