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authorThomas Gleixner <tglx@linutronix.de>2017-05-30 23:15:38 +0200
committerThomas Gleixner <tglx@linutronix.de>2017-06-04 15:40:22 +0200
commit3a06c7ac24f9f24ec059cd77c2dbdf7fbfd0aaaf (patch)
tree840a255c75e7d5f400722236ff7ee4a13a73a779 /kernel/time/posix-clock.c
parentposix-timers: Remove unused export of posix_timer_event() (diff)
downloadlinux-3a06c7ac24f9f24ec059cd77c2dbdf7fbfd0aaaf.tar.xz
linux-3a06c7ac24f9f24ec059cd77c2dbdf7fbfd0aaaf.zip
posix-clocks: Remove interval timer facility and mmap/fasync callbacks
The only user of this facility is ptp_clock, which does not implement any of those functions. Remove them to prevent accidental users. Especially the interval timer interfaces are now more or less impossible to implement because the necessary infrastructure has been confined to the core code. Aside of that it's really complex to make these callbacks implemented according to spec as the alarm timer implementation demonstrates. If at all then a nanosleep callback might be a reasonable extension. For now keep just what ptp_clock needs. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20170530211656.145036286@linutronix.de
Diffstat (limited to 'kernel/time/posix-clock.c')
-rw-r--r--kernel/time/posix-clock.c113
1 files changed, 0 insertions, 113 deletions
diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c
index 7e453005e078..bd4fb785652f 100644
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -82,38 +82,6 @@ static unsigned int posix_clock_poll(struct file *fp, poll_table *wait)
return result;
}
-static int posix_clock_fasync(int fd, struct file *fp, int on)
-{
- struct posix_clock *clk = get_posix_clock(fp);
- int err = 0;
-
- if (!clk)
- return -ENODEV;
-
- if (clk->ops.fasync)
- err = clk->ops.fasync(clk, fd, fp, on);
-
- put_posix_clock(clk);
-
- return err;
-}
-
-static int posix_clock_mmap(struct file *fp, struct vm_area_struct *vma)
-{
- struct posix_clock *clk = get_posix_clock(fp);
- int err = -ENODEV;
-
- if (!clk)
- return -ENODEV;
-
- if (clk->ops.mmap)
- err = clk->ops.mmap(clk, vma);
-
- put_posix_clock(clk);
-
- return err;
-}
-
static long posix_clock_ioctl(struct file *fp,
unsigned int cmd, unsigned long arg)
{
@@ -199,8 +167,6 @@ static const struct file_operations posix_clock_file_operations = {
.unlocked_ioctl = posix_clock_ioctl,
.open = posix_clock_open,
.release = posix_clock_release,
- .fasync = posix_clock_fasync,
- .mmap = posix_clock_mmap,
#ifdef CONFIG_COMPAT
.compat_ioctl = posix_clock_compat_ioctl,
#endif
@@ -359,88 +325,9 @@ out:
return err;
}
-static int pc_timer_create(struct k_itimer *kit)
-{
- clockid_t id = kit->it_clock;
- struct posix_clock_desc cd;
- int err;
-
- err = get_clock_desc(id, &cd);
- if (err)
- return err;
-
- if (cd.clk->ops.timer_create)
- err = cd.clk->ops.timer_create(cd.clk, kit);
- else
- err = -EOPNOTSUPP;
-
- put_clock_desc(&cd);
-
- return err;
-}
-
-static int pc_timer_delete(struct k_itimer *kit)
-{
- clockid_t id = kit->it_clock;
- struct posix_clock_desc cd;
- int err;
-
- err = get_clock_desc(id, &cd);
- if (err)
- return err;
-
- if (cd.clk->ops.timer_delete)
- err = cd.clk->ops.timer_delete(cd.clk, kit);
- else
- err = -EOPNOTSUPP;
-
- put_clock_desc(&cd);
-
- return err;
-}
-
-static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec64 *ts)
-{
- clockid_t id = kit->it_clock;
- struct posix_clock_desc cd;
-
- if (get_clock_desc(id, &cd))
- return;
-
- if (cd.clk->ops.timer_gettime)
- cd.clk->ops.timer_gettime(cd.clk, kit, ts);
-
- put_clock_desc(&cd);
-}
-
-static int pc_timer_settime(struct k_itimer *kit, int flags,
- struct itimerspec64 *ts, struct itimerspec64 *old)
-{
- clockid_t id = kit->it_clock;
- struct posix_clock_desc cd;
- int err;
-
- err = get_clock_desc(id, &cd);
- if (err)
- return err;
-
- if (cd.clk->ops.timer_settime)
- err = cd.clk->ops.timer_settime(cd.clk, kit, flags, ts, old);
- else
- err = -EOPNOTSUPP;
-
- put_clock_desc(&cd);
-
- return err;
-}
-
const struct k_clock clock_posix_dynamic = {
.clock_getres = pc_clock_getres,
.clock_set = pc_clock_settime,
.clock_get = pc_clock_gettime,
.clock_adj = pc_clock_adjtime,
- .timer_create = pc_timer_create,
- .timer_set = pc_timer_settime,
- .timer_del = pc_timer_delete,
- .timer_get = pc_timer_gettime,
};