diff options
| author | Anton Blanchard <anton@ozlabs.org> | 2018-10-02 02:01:05 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-10-04 16:00:31 +0300 |
| commit | 817593604e5b244dc55344d298d96122457c20bd (patch) | |
| tree | 3eef8b709b42a878faceade92ab08390602f345e /arch | |
| parent | 8b78fdb045de60a4eb35460092bbd3cffa925353 (diff) | |
| download | linux-817593604e5b244dc55344d298d96122457c20bd.tar.xz | |
powerpc/time: Add set_state_oneshot_stopped decrementer callback
If CONFIG_PPC_WATCHDOG is enabled we always cap the decrementer to
0x7fffffff:
if (IS_ENABLED(CONFIG_PPC_WATCHDOG))
set_dec(0x7fffffff);
else
set_dec(decrementer_max);
If there are no future events, we don't reprogram the decrementer
after this and we end up with 0x7fffffff even on a large decrementer
capable system.
As suggested by Nick, add a set_state_oneshot_stopped callback
so we program the decrementer with decrementer_max if there are
no future events.
Signed-off-by: Anton Blanchard <anton@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/time.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 6a1f0a084ca3..40868f3ee113 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -111,6 +111,7 @@ struct clock_event_device decrementer_clockevent = { .rating = 200, .irq = 0, .set_next_event = decrementer_set_next_event, + .set_state_oneshot_stopped = decrementer_shutdown, .set_state_shutdown = decrementer_shutdown, .tick_resume = decrementer_shutdown, .features = CLOCK_EVT_FEAT_ONESHOT | |