diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-04 16:23:30 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-04 16:23:30 -0700 |
commit | 98959948a7ba33cf8c708626e0d2a1456397e1c6 (patch) | |
tree | 8ba9b6c2679a06e89f23bdd7018e9bb0249e3bda /drivers | |
parent | ef35ad26f8ff44d2c93e29952cdb336bda729d9d (diff) | |
parent | cd3bd4e628a6d57d66afe77835fe8d93ae3e41f8 (diff) |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- Move the nohz kick code out of the scheduler tick to a dedicated IPI,
from Frederic Weisbecker.
This necessiated quite some background infrastructure rework,
including:
* Clean up some irq-work internals
* Implement remote irq-work
* Implement nohz kick on top of remote irq-work
* Move full dynticks timer enqueue notification to new kick
* Move multi-task notification to new kick
* Remove unecessary barriers on multi-task notification
- Remove proliferation of wait_on_bit() action functions and allow
wait_on_bit_action() functions to support a timeout. (Neil Brown)
- Another round of sched/numa improvements, cleanups and fixes. (Rik
van Riel)
- Implement fast idling of CPUs when the system is partially loaded,
for better scalability. (Tim Chen)
- Restructure and fix the CPU hotplug handling code that may leave
cfs_rq and rt_rq's throttled when tasks are migrated away from a dead
cpu. (Kirill Tkhai)
- Robustify the sched topology setup code. (Peterz Zijlstra)
- Improve sched_feat() handling wrt. static_keys (Jason Baron)
- Misc fixes.
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
sched/fair: Fix 'make xmldocs' warning caused by missing description
sched: Use macro for magic number of -1 for setparam
sched: Robustify topology setup
sched: Fix sched_setparam() policy == -1 logic
sched: Allow wait_on_bit_action() functions to support a timeout
sched: Remove proliferation of wait_on_bit() action functions
sched/numa: Revert "Use effective_load() to balance NUMA loads"
sched: Fix static_key race with sched_feat()
sched: Remove extra static_key*() function indirection
sched/rt: Fix replenish_dl_entity() comments to match the current upstream code
sched: Transform resched_task() into resched_curr()
sched/deadline: Kill task_struct->pi_top_task
sched: Rework check_for_tasks()
sched/rt: Enqueue just unthrottled rt_rq back on the stack in __disable_runtime()
sched/fair: Disable runtime_enabled on dying rq
sched/numa: Change scan period code to match intent
sched/numa: Rework best node setting in task_numa_migrate()
sched/numa: Examine a task move when examining a task swap
sched/numa: Simplify task_numa_compare()
sched/numa: Use effective_load() to balance NUMA loads
...
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/md/dm-bufio.c | 41 | ||||
-rw-r--r-- | drivers/md/dm-snap.c | 10 | ||||
-rw-r--r-- | drivers/media/usb/dvb-usb-v2/dvb_usb_core.c | 12 |
3 files changed, 17 insertions, 46 deletions
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c index d724459860d9..ab472c557d18 100644 --- a/drivers/md/dm-bufio.c +++ b/drivers/md/dm-bufio.c @@ -615,16 +615,6 @@ static void write_endio(struct bio *bio, int error) } /* - * This function is called when wait_on_bit is actually waiting. - */ -static int do_io_schedule(void *word) -{ - io_schedule(); - - return 0; -} - -/* * Initiate a write on a dirty buffer, but don't wait for it. * * - If the buffer is not dirty, exit. @@ -640,8 +630,7 @@ static void __write_dirty_buffer(struct dm_buffer *b, return; clear_bit(B_DIRTY, &b->state); - wait_on_bit_lock(&b->state, B_WRITING, - do_io_schedule, TASK_UNINTERRUPTIBLE); + wait_on_bit_lock_io(&b->state, B_WRITING, TASK_UNINTERRUPTIBLE); if (!write_list) submit_io(b, WRITE, b->block, write_endio); @@ -675,9 +664,9 @@ static void __make_buffer_clean(struct dm_buffer *b) if (!b->state) /* fast case */ return; - wait_on_bit(&b->state, B_READING, do_io_schedule, TASK_UNINTERRUPTIBLE); + wait_on_bit_io(&b->state, B_READING, TASK_UNINTERRUPTIBLE); __write_dirty_buffer(b, NULL); - wait_on_bit(&b->state, B_WRITING, do_io_schedule, TASK_UNINTERRUPTIBLE); + wait_on_bit_io(&b->state, B_WRITING, TASK_UNINTERRUPTIBLE); } /* @@ -1030,7 +1019,7 @@ static void *new_read(struct dm_bufio_client *c, sector_t block, if (need_submit) submit_io(b, READ, b->block, read_endio); - wait_on_bit(&b->state, B_READING, do_io_schedule, TASK_UNINTERRUPTIBLE); + wait_on_bit_io(&b->state, B_READING, TASK_UNINTERRUPTIBLE); if (b->read_error) { int error = b->read_error; @@ -1209,15 +1198,13 @@ again: dropped_lock = 1; b->hold_count++; dm_bufio_unlock(c); - wait_on_bit(&b->state, B_WRITING, - do_io_schedule, - TASK_UNINTERRUPTIBLE); + wait_on_bit_io(&b->state, B_WRITING, + TASK_UNINTERRUPTIBLE); dm_bufio_lock(c); b->hold_count--; } else - wait_on_bit(&b->state, B_WRITING, - do_io_schedule, - TASK_UNINTERRUPTIBLE); + wait_on_bit_io(&b->state, B_WRITING, + TASK_UNINTERRUPTIBLE); } if (!test_bit(B_DIRTY, &b->state) && @@ -1321,15 +1308,15 @@ retry: __write_dirty_buffer(b, NULL); if (b->hold_count == 1) { - wait_on_bit(&b->state, B_WRITING, - do_io_schedule, TASK_UNINTERRUPTIBLE); + wait_on_bit_io(&b->state, B_WRITING, + TASK_UNINTERRUPTIBLE); set_bit(B_DIRTY, &b->state); __unlink_buffer(b); __link_buffer(b, new_block, LIST_DIRTY); } else { sector_t old_block; - wait_on_bit_lock(&b->state, B_WRITING, - do_io_schedule, TASK_UNINTERRUPTIBLE); + wait_on_bit_lock_io(&b->state, B_WRITING, + TASK_UNINTERRUPTIBLE); /* * Relink buffer to "new_block" so that write_callback * sees "new_block" as a block number. @@ -1341,8 +1328,8 @@ retry: __unlink_buffer(b); __link_buffer(b, new_block, b->list_mode); submit_io(b, WRITE, new_block, write_endio); - wait_on_bit(&b->state, B_WRITING, - do_io_schedule, TASK_UNINTERRUPTIBLE); + wait_on_bit_io(&b->state, B_WRITING, + TASK_UNINTERRUPTIBLE); __unlink_buffer(b); __link_buffer(b, old_block, b->list_mode); } diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index 5bd2290cfb1e..864b03f47727 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -1032,21 +1032,13 @@ static void start_merge(struct dm_snapshot *s) snapshot_merge_next_chunks(s); } -static int wait_schedule(void *ptr) -{ - schedule(); - - return 0; -} - /* * Stop the merging process and wait until it finishes. */ static void stop_merge(struct dm_snapshot *s) { set_bit(SHUTDOWN_MERGE, &s->state_bits); - wait_on_bit(&s->state_bits, RUNNING_MERGE, wait_schedule, - TASK_UNINTERRUPTIBLE); + wait_on_bit(&s->state_bits, RUNNING_MERGE, TASK_UNINTERRUPTIBLE); clear_bit(SHUTDOWN_MERGE, &s->state_bits); } diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c index e35580618936..f296394bb7c5 100644 --- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c +++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c @@ -253,13 +253,6 @@ static int dvb_usbv2_adapter_stream_exit(struct dvb_usb_adapter *adap) return usb_urb_exitv2(&adap->stream); } -static int wait_schedule(void *ptr) -{ - schedule(); - - return 0; -} - static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed) { struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv; @@ -273,8 +266,7 @@ static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed) dvbdmxfeed->pid, dvbdmxfeed->index); /* wait init is done */ - wait_on_bit(&adap->state_bits, ADAP_INIT, wait_schedule, - TASK_UNINTERRUPTIBLE); + wait_on_bit(&adap->state_bits, ADAP_INIT, TASK_UNINTERRUPTIBLE); if (adap->active_fe == -1) return -EINVAL; @@ -568,7 +560,7 @@ static int dvb_usb_fe_sleep(struct dvb_frontend *fe) if (!adap->suspend_resume_active) { set_bit(ADAP_SLEEP, &adap->state_bits); - wait_on_bit(&adap->state_bits, ADAP_STREAMING, wait_schedule, + wait_on_bit(&adap->state_bits, ADAP_STREAMING, TASK_UNINTERRUPTIBLE); } |