diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-13 16:23:15 +0200 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-13 16:23:15 +0200 |
commit | faafcba3b5e15999cf75d5c5a513ac8e47e2545f (patch) | |
tree | 47d58d1c00e650e820506c91eb9a41268756bdda /drivers | |
parent | 13ead805c5a14b0e7ecd34f61404a5bfba655895 (diff) | |
parent | f10e00f4bf360c36edbe6bf18a6c75b171cbe012 (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:
"The main changes in this cycle were:
- Optimized support for Intel "Cluster-on-Die" (CoD) topologies (Dave
Hansen)
- Various sched/idle refinements for better idle handling (Nicolas
Pitre, Daniel Lezcano, Chuansheng Liu, Vincent Guittot)
- sched/numa updates and optimizations (Rik van Riel)
- sysbench speedup (Vincent Guittot)
- capacity calculation cleanups/refactoring (Vincent Guittot)
- Various cleanups to thread group iteration (Oleg Nesterov)
- Double-rq-lock removal optimization and various refactorings
(Kirill Tkhai)
- various sched/deadline fixes
... and lots of other changes"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits)
sched/dl: Use dl_bw_of() under rcu_read_lock_sched()
sched/fair: Delete resched_cpu() from idle_balance()
sched, time: Fix build error with 64 bit cputime_t on 32 bit systems
sched: Improve sysbench performance by fixing spurious active migration
sched/x86: Fix up typo in topology detection
x86, sched: Add new topology for multi-NUMA-node CPUs
sched/rt: Use resched_curr() in task_tick_rt()
sched: Use rq->rd in sched_setaffinity() under RCU read lock
sched: cleanup: Rename 'out_unlock' to 'out_free_new_mask'
sched: Use dl_bw_of() under RCU read lock
sched/fair: Remove duplicate code from can_migrate_task()
sched, mips, ia64: Remove __ARCH_WANT_UNLOCKED_CTXSW
sched: print_rq(): Don't use tasklist_lock
sched: normalize_rt_tasks(): Don't use _irqsave for tasklist_lock, use task_rq_lock()
sched: Fix the task-group check in tg_has_rt_tasks()
sched/fair: Leverage the idle state info when choosing the "idlest" cpu
sched: Let the scheduler see CPU idle states
sched/deadline: Fix inter- exclusive cpusets migrations
sched/deadline: Clear dl_entity params when setscheduling to different class
sched/numa: Kill the wrong/dead TASK_DEAD check in task_numa_fault()
...
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/cpuidle/cpuidle.c | 15 | ||||
-rw-r--r-- | drivers/gpu/vga/vgaarb.c | 1 | ||||
-rw-r--r-- | drivers/md/dm-bufio.c | 1 | ||||
-rw-r--r-- | drivers/parisc/power.c | 1 | ||||
-rw-r--r-- | drivers/s390/net/claw.c | 2 | ||||
-rw-r--r-- | drivers/scsi/fcoe/fcoe.c | 1 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_os.c | 1 | ||||
-rw-r--r-- | drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c | 3 | ||||
-rw-r--r-- | drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c | 1 | ||||
-rw-r--r-- | drivers/staging/lustre/lustre/libcfs/fail.c | 1 | ||||
-rw-r--r-- | drivers/tty/bfin_jtag_comm.c | 1 |
11 files changed, 8 insertions, 20 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index ee9df5e3f5e..125150dc6e8 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -223,8 +223,14 @@ void cpuidle_uninstall_idle_handler(void) { if (enabled_devices) { initialized = 0; - kick_all_cpus_sync(); + wake_up_all_idle_cpus(); } + + /* + * Make sure external observers (such as the scheduler) + * are done looking at pointed idle states. + */ + synchronize_rcu(); } /** @@ -530,11 +536,6 @@ EXPORT_SYMBOL_GPL(cpuidle_register); #ifdef CONFIG_SMP -static void smp_callback(void *v) -{ - /* we already woke the CPU up, nothing more to do */ -} - /* * This function gets called when a part of the kernel has a new latency * requirement. This means we need to get all processors out of their C-state, @@ -544,7 +545,7 @@ static void smp_callback(void *v) static int cpuidle_latency_notify(struct notifier_block *b, unsigned long l, void *v) { - smp_call_function(smp_callback, NULL, 1); + wake_up_all_idle_cpus(); return NOTIFY_OK; } diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c index 77711623b97..7bcbf863656 100644 --- a/drivers/gpu/vga/vgaarb.c +++ b/drivers/gpu/vga/vgaarb.c @@ -400,7 +400,6 @@ int vga_get(struct pci_dev *pdev, unsigned int rsrc, int interruptible) } schedule(); remove_wait_queue(&vga_wait_queue, &wait); - set_current_state(TASK_RUNNING); } return rc; } diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c index ab472c557d1..0505559f096 100644 --- a/drivers/md/dm-bufio.c +++ b/drivers/md/dm-bufio.c @@ -720,7 +720,6 @@ static void __wait_for_free_buffer(struct dm_bufio_client *c) io_schedule(); - set_task_state(current, TASK_RUNNING); remove_wait_queue(&c->free_buffer_wait, &wait); dm_bufio_lock(c); diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c index 90cca5e3805..ef31b77404e 100644 --- a/drivers/parisc/power.c +++ b/drivers/parisc/power.c @@ -121,7 +121,6 @@ static int kpowerswd(void *param) unsigned long soft_power_reg = (unsigned long) param; schedule_timeout_interruptible(pwrsw_enabled ? HZ : HZ/POWERSWITCH_POLL_PER_SEC); - __set_current_state(TASK_RUNNING); if (unlikely(!pwrsw_enabled)) continue; diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c index fbc6701bef3..213e54ee8a6 100644 --- a/drivers/s390/net/claw.c +++ b/drivers/s390/net/claw.c @@ -481,7 +481,6 @@ claw_open(struct net_device *dev) spin_unlock_irqrestore( get_ccwdev_lock(privptr->channel[i].cdev), saveflags); schedule(); - set_current_state(TASK_RUNNING); remove_wait_queue(&privptr->channel[i].wait, &wait); if(rc != 0) ccw_check_return_code(privptr->channel[i].cdev, rc); @@ -828,7 +827,6 @@ claw_release(struct net_device *dev) spin_unlock_irqrestore( get_ccwdev_lock(privptr->channel[i].cdev), saveflags); schedule(); - set_current_state(TASK_RUNNING); remove_wait_queue(&privptr->channel[i].wait, &wait); if (rc != 0) { ccw_check_return_code(privptr->channel[i].cdev, rc); diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 00ee0ed642a..4a8ac7d8c76 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -1884,7 +1884,6 @@ retry: set_current_state(TASK_INTERRUPTIBLE); spin_unlock_bh(&p->fcoe_rx_list.lock); schedule(); - set_current_state(TASK_RUNNING); goto retry; } diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index dabd25429c5..db3dbd999cb 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -4875,7 +4875,6 @@ qla2x00_do_dpc(void *data) "DPC handler sleeping.\n"); schedule(); - __set_current_state(TASK_RUNNING); if (!base_vha->flags.init_done || ha->flags.mbox_busy) goto end_loop; diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c index 86f1a91e896..14c9c8d18d0 100644 --- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c +++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c @@ -3215,7 +3215,6 @@ kiblnd_connd (void *arg) schedule_timeout(timeout); - set_current_state(TASK_RUNNING); remove_wait_queue(&kiblnd_data.kib_connd_waitq, &wait); spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags); } @@ -3432,7 +3431,6 @@ kiblnd_scheduler(void *arg) busy_loops = 0; remove_wait_queue(&sched->ibs_waitq, &wait); - set_current_state(TASK_RUNNING); spin_lock_irqsave(&sched->ibs_lock, flags); } @@ -3507,7 +3505,6 @@ kiblnd_failover_thread(void *arg) rc = schedule_timeout(long_sleep ? cfs_time_seconds(10) : cfs_time_seconds(1)); - set_current_state(TASK_RUNNING); remove_wait_queue(&kiblnd_data.kib_failover_waitq, &wait); write_lock_irqsave(glock, flags); diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c index bcfee7c2194..d29f5f134b8 100644 --- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c +++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c @@ -2232,7 +2232,6 @@ ksocknal_connd (void *arg) nloops = 0; schedule_timeout(timeout); - set_current_state(TASK_RUNNING); remove_wait_queue(&ksocknal_data.ksnd_connd_waitq, &wait); spin_lock_bh(connd_lock); } diff --git a/drivers/staging/lustre/lustre/libcfs/fail.c b/drivers/staging/lustre/lustre/libcfs/fail.c index 1bf9c90b478..e73ca3df973 100644 --- a/drivers/staging/lustre/lustre/libcfs/fail.c +++ b/drivers/staging/lustre/lustre/libcfs/fail.c @@ -131,7 +131,6 @@ int __cfs_fail_timeout_set(__u32 id, __u32 value, int ms, int set) id, ms); set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(cfs_time_seconds(ms) / 1000); - set_current_state(TASK_RUNNING); CERROR("cfs_fail_timeout id %x awake\n", id); } return ret; diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c index 8096fcbe2dc..d7b198c400c 100644 --- a/drivers/tty/bfin_jtag_comm.c +++ b/drivers/tty/bfin_jtag_comm.c @@ -77,7 +77,6 @@ bfin_jc_emudat_manager(void *arg) pr_debug("waiting for readers\n"); __set_current_state(TASK_UNINTERRUPTIBLE); schedule(); - __set_current_state(TASK_RUNNING); continue; } |