linux/sound/core/seq
Arnd Bergmann 3915bf2946 ALSA: seq_timer: use monotonic times internally
The sequencer client manager reports timestamps in units of unsigned
32-bit seconds/nanoseconds, but that does not suffer from the y2038
overflow because it stores only the delta since the 'last_update'
time was recorded.

However, the use of the do_gettimeofday() function is problematic
and we have to replace it to avoid the overflow on on 32-bit
architectures.

This uses 'struct timespec64' to record 'last_update', and changes
the code to use monotonic timestamps that do not suffer from leap
seconds and settimeofday updates.

As a side-effect, the code can now use the timespec64_sub() helper
and become more readable and also avoid a multiplication to convert
from microseconds to nanoseconds.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-17 22:56:13 +02:00
..
oss ALSA: seq_oss: Change structure initialisation to C99 style 2016-06-15 10:13:54 +02:00
Kconfig ALSA: clean up the logic for building sequencer modules 2009-05-29 11:49:42 +02:00
Makefile ALSA: core: Fix randconfig build wrt CONFIG_PROC_FS 2015-05-29 07:21:02 +02:00
seq_clientmgr.c ALSA: seq: Provide card number / PID via sequencer client info 2016-03-08 10:52:52 +01:00
seq_clientmgr.h ALSA: seq: Provide card number / PID via sequencer client info 2016-03-08 10:52:52 +01:00
seq_compat.c ALSA: seq: Fix snd_seq_call_port_info_ioctl in compat mode 2016-01-18 14:39:13 +01:00
seq_device.c ALSA: core: Fix randconfig build wrt CONFIG_PROC_FS 2015-05-29 07:21:02 +02:00
seq_dummy.c ALSA: seq: Drop snd_seq_autoload_lock() and _unlock() 2015-02-12 14:42:31 +01:00
seq_fifo.c ALSA: seq: Drop superfluous error/debug messages after malloc failures 2015-03-10 15:41:18 +01:00
seq_fifo.h
seq_info.c ALSA: core: Build conditionally and remove superfluous ifdefs 2015-04-24 17:31:07 +02:00
seq_info.h ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS 2015-05-27 21:25:19 +02:00
seq_lock.c ALSA: seq: Use standard printk helpers 2014-02-14 08:14:18 +01:00
seq_lock.h
seq_memory.c ALSA: seq: Fix leak of pool buffer at concurrent writes 2016-02-15 16:26:52 +01:00
seq_memory.h ALSA: core: sparse cleanups 2011-02-14 17:10:11 +01:00
seq_midi_emul.c ALSA: seq: potential out of bounds in do_control() 2015-02-12 11:07:48 +01:00
seq_midi_event.c sound: Add module.h to the previously silent sound users 2011-10-31 19:31:21 -04:00
seq_midi.c ALSA: seq: Drop snd_seq_autoload_lock() and _unlock() 2015-02-12 14:42:31 +01:00
seq_ports.c ALSA: seq: Fix double port list deletion 2016-02-16 14:37:19 +01:00
seq_ports.h ALSA: seq: remove unused callback_all field 2015-01-26 13:56:58 +01:00
seq_prioq.c ALSA: seq: Drop superfluous error/debug messages after malloc failures 2015-03-10 15:41:18 +01:00
seq_prioq.h
seq_queue.c ALSA: seq: Fix race at timer setup and close 2016-01-12 17:50:41 +01:00
seq_queue.h
seq_system.c sound: Add export.h for THIS_MODULE/EXPORT_SYMBOL where needed 2011-10-31 19:31:22 -04:00
seq_system.h
seq_timer.c ALSA: seq_timer: use monotonic times internally 2016-06-17 22:56:13 +02:00
seq_timer.h ALSA: seq_timer: use monotonic times internally 2016-06-17 22:56:13 +02:00
seq_virmidi.c ALSA: rawmidi: Make snd_rawmidi_transmit() race-free 2016-02-03 14:51:28 +01:00
seq.c ALSA: timer: remove legacy rtctimer 2016-04-25 10:41:46 +02:00