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Age	Commit message (Collapse)	Author	Files	Lines
2017-12-20	lock: Add additional lock auditing code	Benjamin Herrenschmidt	1	-5/+28
	Keep track of lock owner name and replace lock_depth counter with a per-cpu list of locks held by the cpu. This allows us to print the actual locks held in case we hit the (in)famous message about opal_pollers being run with a lock held. It also allows us to warn (and drop them) if locks are still held when returning to the OS or completing a scheduled job. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> [stewart: fix unit tests] Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-12-20	lock: Move cmpxchg() primitives to their own file	Benjamin Herrenschmidt	1	-57/+1
	Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-12-03	core/lock: Introduce atomic cmpxchg and implement try_lock with it	Nicholas Piggin	1	-2/+59
	cmpxchg will be used in a subsequent change, and this reduces the amount of asm code. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [stewart: fix some ifdef __TEST__ foo to ensure unittests work] Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-12	Use LOCK_UNLOCKED macro to in init_lock()	Michael Neuling	1	-2/+1
	Avoids duplication of init values. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2014-07-08	lock: Add helper to check if this CPU is already holding a lock	Benjamin Herrenschmidt	1	-0/+2
	For debug purposes essentially Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-02	Initial commit of Open Source release	Benjamin Herrenschmidt	1	-0/+83
	Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>