diff options
author | Clemens Ladisch <clemens@ladisch.de> | 2011-02-10 16:15:44 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-17 15:36:59 -0800 |
commit | 9f2d7ebc444664e791e357075ebb80174fb7daf6 (patch) | |
tree | 79e67e7bb35a00d67ca5822319ca4caf10202f41 /ipc | |
parent | 1e81d74b8bbd77d990a367cbe380637eaa12513d (diff) |
ALSA: hrtimer: handle delayed timer interrupts
commit b1d4f7f4bdcf9915c41ff8cfc4425c84dabb1fde upstream.
If a timer interrupt was delayed too much, hrtimer_forward_now() will
forward the timer expiry more than once. When this happens, the
additional number of elapsed ALSA timer ticks must be passed to
snd_timer_interrupt() to prevent the ALSA timer from falling behind.
This mostly fixes MIDI slowdown problems on highly-loaded systems with
badly behaved interrupt handlers.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Reported-and-tested-by: Arthur Marsh <arthur.marsh@internode.on.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'ipc')
0 files changed, 0 insertions, 0 deletions