linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2006-09-26	[PATCH] optimize hweight64 for x86_64	Andi Kleen	1	-0/+2
	Based on patch from David Rientjes <rientjes@google.com>, but changed by AK. Optimizes the 64-bit hamming weight for x86_64 processors assuming they have fast multiplication. Uses five fewer bitops than the generic hweight64. Benchmark on one EMT64 showed ~25% speedup with 2^24 consecutive calls. Define a new ARCH_HAS_FAST_MULTIPLIER that can be set by other architectures that can also multiply fast. Signed-off-by: Andi Kleen <ak@suse.de>
2006-06-26	[PATCH] x86_64: x86_64 version of the smp alternative patch.	Gerd Hoffmann	1	-6/+1
	Changes are largely identical to the i386 version: * alternative #define are moved to the new alternative.h file. * one new elf section with pointers to the lock prefixes which can be nop'ed out for non-smp. * two new elf sections simliar to the "classic" alternatives to replace SMP code with simpler UP code. * fixup headers to use alternative.h instead of defining their own LOCK / LOCK_PREFIX macros. The patch reuses the i386 version of the alternatives code to avoid code duplication. The code in alternatives.c was shuffled around a bit to reduce the number of #ifdefs needed. It also got some tweaks needed for x86_64 (vsyscall page handling) and new features (noreplacement option which was x86_64 only up to now). Debug printk's are changed from compile-time to runtime. Loosely based on a early version from Bastian Blank <waldi@debian.org> Signed-off-by: Gerd Hoffmann <kraxel@suse.de> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-26	Don't include linux/config.h from anywhere else in include/	David Woodhouse	1	-1/+0
	Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-03-26	[PATCH] bitops: x86_64: use generic bitops	Akinobu Mita	1	-36/+6
	- remove sched_find_first_bit() - remove generic_hweight{64,32,16,8}() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11	[PATCH] x86_64: fls in asm for x86_64	Stephen Hemminger	1	-3/+16
	Use single instruction for find largest set bit on x86_64. [Updated by Jan Beulich to fix wrong asm constraints in original patch -AK] Cc: jbeulich@novell.com Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11	[PATCH] i386/x86-64: Use input/output dependencies for bitops	Andi Kleen	1	-12/+12
	Noticed by Andreas Schwab Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-03	[FLS64]: x86_64 version	Stephen Hemminger	1	-1/+27
	Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-03	[FLS64]: generic version	Stephen Hemminger	1	-0/+1
	Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-07-28	[PATCH] x86_64: Fix gcc 4 warning in sched_find_first_bit	Jesse Millan	1	-2/+1
	This patch eliminates the GCC4 warning on the x86_64 platform: kernel/sched.c:1824: warning: control may reach end of non-void function 'sched_find_first_bit' being inlined. The change follows the lead of others, i.e. it is guaranteed that at least one of b[0], b[1], or b[2] will have a bit set and evaluate to true. That being said, GCC4.0.0 notices that the code flow does not return anything if b[0], b[1] and b[2] are not true. Since we know better, if it's not b[0] or b[1], it has to be b[2]. Signed-off-by: Jesse Millan <jessem@cs.pdx.edu> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23	[PATCH] add x86-64 specific support for sparsemem	Matt Tolentino	1	-2/+0
	This patch adds in the necessary support for sparsemem such that x86-64 kernels may use sparsemem as an alternative to discontigmem for NUMA kernels. Note that this does no preclude one from continuing to build NUMA kernels using discontigmem, but merely allows the option to build NUMA kernels with sparsemem. Interestingly, the use of sparsemem in lieu of discontigmem in NUMA kernels results in reduced text size for otherwise equivalent kernels as shown in the example builds below: text data bss dec hex filename 2371036 765884 1237108 4374028 42be0c vmlinux.discontig 2366549 776484 1302772 4445805 43d66d vmlinux.sparse Signed-off-by: Matt Tolentino <matthew.e.tolentino@intel.com> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16	Linux-2.6.12-rc2	Linus Torvalds	1	-0/+418
	Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!