openslx/kernel-qcow2-linux.git - In-kernel qcow2 (Kernel part)

	Commit message (Collapse)	Author	Age	Files	Lines
*	locking/rwlock, x86: Delete unused asm/rwlock.h and rwlock.S	Waiman Long	2014-09-10	1	-49/+0
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	This patch removes the unused asm/rwlock.h and rwlock.S files. Signed-off-by: Waiman Long <Waiman.Long@hp.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: http://lkml.kernel.org/r/1408037251-45918-3-git-send-email-Waiman.Long@hp.com Cc: Scott J Norton <scott.norton@hp.com> Cc: Borislav Petkov <bp@suse.de> Cc: Daniel Borkmann <dborkman@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Francesco Fusco <ffusco@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Graf <tgraf@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
*	x86: Fix write lock scalability 64-bit issue	Jan Beulich	2011-07-21	1	-1/+42
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	With the write lock path simply subtracting RW_LOCK_BIAS there is, on large systems, the theoretical possibility of overflowing the 32-bit value that was used so far (namely if 128 or more CPUs manage to do the subtraction, but don't get to do the inverse addition in the failure path quickly enough). A first measure is to modify RW_LOCK_BIAS itself - with the new value chosen, it is good for up to 2048 CPUs each allowed to nest over 2048 times on the read path without causing an issue. Quite possibly it would even be sufficient to adjust the bias a little further, assuming that allowing for significantly less nesting would suffice. However, as the original value chosen allowed for even more nesting levels, to support more than 2048 CPUs (possible currently only for 64-bit kernels) the lock itself gets widened to 64 bits. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/4E258E0D020000780004E3F0@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
*	x86: Fix ASM_X86__ header guards	H. Peter Anvin	2008-10-23	1	-3/+3
\| \| \| \| \| \| \| \| \|	Change header guards named "ASM_X86__" to "_ASM_X86_" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
*	x86, um: ... and asm-x86 move	Al Viro	2008-10-23	1	-0/+8
	Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>