op-kernel-dev - Development kernel branch for OpenPOWER systems

	Commit message (Collapse)	Author	Age	Files	Lines
*	rcu: Fix hlist_bl_set_first_rcu() annotation	Steven Whitehouse	2013-03-12	1	-1/+1
\| \| \| \| \| \| \| \| \| \| \| \|	Abhi noticed that we were getting a complaint from the RCU subsystem about access of an RCU protected list under the write side bit lock. This commit adds additional annotation to check both the RCU read lock and the write side bit lock before printing a message. Reported by: Abhijith Das <adas@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Tested-by: Abhijith Das <adas@redhat.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
*	fs: hlist UP debug fixup	Nick Piggin	2011-01-14	1	-1/+2
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Po-Yu Chuang <ratbert.chuang@gmail.com> noticed that hlist_bl_set_first could crash on a UP system when LIST_BL_LOCKMASK is 0, because LIST_BL_BUG_ON(!((unsigned long)h->first & LIST_BL_LOCKMASK)); always evaulates to true. Fix the expression, and also avoid a dependency between bit spinlock implementation and list bl code (list code shouldn't know anything except that bit 0 is set when adding and removing elements). Eventually if a good use case comes up, we might use this list to store 1 or more arbitrary bits of data, so it really shouldn't be tied to locking either, but for now they are helpful for debugging. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
*	kernel: add bl_list	Nick Piggin	2011-01-07	1	-0/+127
	Introduce a type of hlist that can support the use of the lowest bit in the hlist_head. This will be subsequently used to implement per-bucket bit spinlock for inode and dentry hashes, and may be useful in other cases such as network hashes. Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Nick Piggin <npiggin@kernel.dk>