| commit | deab83237341ae1a0fcf8dc399a76b7c4afced1b | |
| author | Clemens Ladisch <clemens@ladisch.de> | |
| Thu, 10 Feb 2011 15:15:44 +0000 (10 16:15 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Thu, 17 Feb 2011 23:14:10 +0000 (17 15:14 -0800) | ||
| tree | e6184d941a712f022bacb0239cccd364d0847296 | treesnapshot (tar.gz zip) |
| parent | 397435355c1704173b300025e657c5a32ebab210 | commitdiff |
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>
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>
| sound/core/hrtimer.c | diffblobblamehistory |