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| author | Davidlohr Bueso <dave@stgolabs.net> | 2021-01-10 20:28:55 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-12 12:52:28 +0100 |
| commit | 8653d71ce3763aedcf3d2331f59beda3fecd79e4 (patch) | |
| tree | c7b041caeb00e3466c430d4280247148cc8b3812 /tools/perf/scripts/python | |
| parent | 0c0a20f6da04780b94e3ccc43101dde6f536ab37 (diff) | |
| download | kernel-8653d71ce3763aedcf3d2331f59beda3fecd79e4.tar.gz | |
usb/gadget: f_midi: Replace tasklet with work
Currently a tasklet is used to transmit input substream buffer
data. However, tasklets have long been deprecated as being too
heavy on the system by running in irq context - and this is not
a performance critical path. If a higher priority process wants
to run, it must wait for the tasklet to finish before doing so.
Deferring work to a workqueue and executing in process context
should be fine considering the callback already does
f_midi_do_transmit() under the transmit_lock and thus changes in
semantics are ok regarding concurrency - tasklets being serialized
against itself.
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Link: https://lore.kernel.org/r/20210111042855.73289-1-dave@stgolabs.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions