linux - linux

	Commit message (Collapse)	Author	Age	Files	Lines
*	dmapools: protect page_list walk in show_pools()	Thomas Gleixner	2009-07-01	1	-0/+2
\| \| \| \| \| \| \| \| \| \| \|	show_pools() walks the page_list of a pool w/o protection against the list modifications in alloc/free. Take pool->lock to avoid stomping into nirvana. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
*	dmapool: enable debugging for CONFIG_SLUB_DEBUG_ON too	Andi Kleen	2008-04-28	1	-4/+8
\| \| \| \| \| \| \| \| \| \| \| \|	Previously it was only enabled for CONFIG_DEBUG_SLAB. Not hooked into the slub runtime debug configuration, so you currently only get it with CONFIG_SLUB_DEBUG_ON, not plain CONFIG_SLUB_DEBUG Acked-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
*	pool: Improve memory usage for devices which can't cross boundaries	Matthew Wilcox	2007-12-04	1	-16/+20
\| \| \| \| \| \| \| \| \| \| \| \| \|	The previous implementation simply refused to allocate more than a boundary's worth of data from an entire page. Some users didn't know this, so specified things like SMP_CACHE_BYTES, not realising the horrible waste of memory that this was. It's fairly easy to correct this problem, just by ensuring we don't cross a boundary within a page. This even helps drivers like EHCI (which can't cross a 4k boundary) on machines with larger page sizes. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: David S. Miller <davem@davemloft.net>
*	Change dmapool free block management	Matthew Wilcox	2007-12-04	1	-61/+58
\| \| \| \| \| \| \| \| \|	Use a list of free blocks within a page instead of using a bitmap. Update documentation to reflect this. As well as being a slight reduction in memory allocation, locked ops and lines of code, it speeds up a transaction processing benchmark by 0.4%. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
*	dmapool: Tidy up includes and add comments	Matthew Wilcox	2007-12-04	1	-10/+30
\| \| \| \| \| \| \| \| \| \|	We were missing a copyright statement and license, so add GPLv2, David Brownell's copyright and my copyright. The asm/io.h include was superfluous, but we were missing a few other necessary includes. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
*	dmapool: Validate parameters to dma_pool_create	Matthew Wilcox	2007-12-04	1	-7/+8
\| \| \| \| \| \| \| \| \|	Check that 'align' is a power of two, like the API specifies. Align 'size' to 'align' correctly -- the current code has an off-by-one. The ALIGN macro in kernel.h doesn't. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: David S. Miller <davem@davemloft.net>
*	Avoid taking waitqueue lock in dmapool	Matthew Wilcox	2007-12-04	1	-4/+5
\| \| \| \| \| \| \| \| \| \|	With one trivial change (taking the lock slightly earlier on wakeup from schedule), all uses of the waitq are under the pool lock, so we can use the locked (or __) versions of the wait queue functions, and avoid the extra spinlock. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: David S. Miller <davem@davemloft.net>
*	dmapool: Fix style problems	Matthew Wilcox	2007-12-04	1	-146/+142
\| \| \| \| \| \|	Run Lindent and fix all issues reported by checkpatch.pl Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
*	Move dmapool.c to mm/ directory	Matthew Wilcox	2007-12-04	1	-0/+481
	Signed-off-by: Matthew Wilcox <willy@linux.intel.com>