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| author |   Clemens Ladisch <clemens@ladisch.de> | 2011-02-10 16:15:44 +0100 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2011-02-10 18:53:29 +0100 |
| commit | b1d4f7f4bdcf9915c41ff8cfc4425c84dabb1fde (patch) | |
| tree | 092e1575eb7c098670ebebd568566067e11a8c32 /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | ALSA: HDA: Add subwoofer quirk for Acer Aspire 8942G (diff) | |
| download | linux-dev-b1d4f7f4bdcf9915c41ff8cfc4425c84dabb1fde.tar.xz linux-dev-b1d4f7f4bdcf9915c41ff8cfc4425c84dabb1fde.zip | |
ALSA: hrtimer: handle delayed timer interrupts
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>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions