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Commit 3b5d8510 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull core locking changes from Ingo Molnar:
 "The biggest change is the rwsem lock-steal improvements, both to the
  assembly optimized and the spinlock based variants.

  The other notable change is the clean up of the seqlock implementation
  to be based on the seqcount infrastructure.

  The rest is assorted smaller debuggability, cleanup and continued -rt
  locking changes."

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rwsem-spinlock: Implement writer lock-stealing for better scalability
  futex: Revert "futex: Mark get_robust_list as deprecated"
  generic: Use raw local irq variant for generic cmpxchg
  lockdep: Selftest: convert spinlock to raw spinlock
  seqlock: Use seqcount infrastructure
  seqlock: Remove unused functions
  ntp: Make ntp_lock raw
  intel_idle: Convert i7300_idle_lock to raw_spinlock
  locking: Various static lock initializer fixes
  lockdep: Print more info when MAX_LOCK_DEPTH is exceeded
  rwsem: Implement writer lock-stealing for better scalability
  lockdep: Silence warning if CONFIG_LOCKDEP isn't set
  watchdog: Use local_clock for get_timestamp()
  lockdep: Rename print_unlock_inbalance_bug() to print_unlock_imbalance_bug()
  locking/stat: Fix a typo
parents c47f39e3 41ef8f82

Documentation/lockstat.txt

+1 −1
Original line number Diff line number Diff line
@@ -65,7 +65,7 @@ that had to wait on lock acquisition. 


 - CONFIGURATION



Lock statistics are enabled via CONFIG_LOCK_STATS.

Lock statistics are enabled via CONFIG_LOCK_STAT.



 - USAGE

drivers/char/random.c

+3 −3
Original line number Diff line number Diff line
@@ -445,7 +445,7 @@ static struct entropy_store input_pool = { 
	.poolinfo = &poolinfo_table[0],

	.name = "input",

	.limit = 1,

	.lock = __SPIN_LOCK_UNLOCKED(&input_pool.lock),

	.lock = __SPIN_LOCK_UNLOCKED(input_pool.lock),

	.pool = input_pool_data

};
@@ -454,7 +454,7 @@ static struct entropy_store blocking_pool = { 
	.name = "blocking",

	.limit = 1,

	.pull = &input_pool,

	.lock = __SPIN_LOCK_UNLOCKED(&blocking_pool.lock),

	.lock = __SPIN_LOCK_UNLOCKED(blocking_pool.lock),

	.pool = blocking_pool_data

};
@@ -462,7 +462,7 @@ static struct entropy_store nonblocking_pool = { 
	.poolinfo = &poolinfo_table[1],

	.name = "nonblocking",

	.pull = &input_pool,

	.lock = __SPIN_LOCK_UNLOCKED(&nonblocking_pool.lock),

	.lock = __SPIN_LOCK_UNLOCKED(nonblocking_pool.lock),

	.pool = nonblocking_pool_data

};

drivers/idle/i7300_idle.c

+4 −4
Original line number Diff line number Diff line
@@ -75,7 +75,7 @@ static unsigned long past_skip; 


static struct pci_dev *fbd_dev;



static spinlock_t i7300_idle_lock;

static raw_spinlock_t i7300_idle_lock;

static int i7300_idle_active;



static u8 i7300_idle_thrtctl_saved;
@@ -457,7 +457,7 @@ static int i7300_idle_notifier(struct notifier_block *nb, unsigned long val, 
		idle_begin_time = ktime_get();

	}



	spin_lock_irqsave(&i7300_idle_lock, flags);

	raw_spin_lock_irqsave(&i7300_idle_lock, flags);

	if (val == IDLE_START) {



		cpumask_set_cpu(smp_processor_id(), idle_cpumask);
@@ -506,7 +506,7 @@ static int i7300_idle_notifier(struct notifier_block *nb, unsigned long val, 
		}

	}

end:

	spin_unlock_irqrestore(&i7300_idle_lock, flags);

	raw_spin_unlock_irqrestore(&i7300_idle_lock, flags);

	return 0;

}
@@ -548,7 +548,7 @@ struct debugfs_file_info { 


static int __init i7300_idle_init(void)

{

	spin_lock_init(&i7300_idle_lock);

	raw_spin_lock_init(&i7300_idle_lock);

	total_us = 0;



	if (i7300_idle_platform_probe(&fbd_dev, &ioat_dev, forceload))

drivers/usb/chipidea/debug.c

+1 −1
Original line number Diff line number Diff line
@@ -222,7 +222,7 @@ static struct { 
} dbg_data = {

	.idx = 0,

	.tty = 0,

	.lck = __RW_LOCK_UNLOCKED(lck)

	.lck = __RW_LOCK_UNLOCKED(dbg_data.lck)

};



/**

fs/file.c

+1 −1
Original line number Diff line number Diff line
@@ -516,7 +516,7 @@ struct files_struct init_files = { 
		.close_on_exec	= init_files.close_on_exec_init,

		.open_fds	= init_files.open_fds_init,

	},

	.file_lock	= __SPIN_LOCK_UNLOCKED(init_task.file_lock),

	.file_lock	= __SPIN_LOCK_UNLOCKED(init_files.file_lock),

};



/*