Anton Blanchard cf8fb5533f powerpc: Optimise the 64bit optimised __clear_user ... I blame Mikey for this. He elevated my slightly dubious testcase: to benchmark status. And naturally we need to be number 1 at creating zeros. So lets improve __clear_user some more. As Paul suggests we can use dcbz for large lengths. This patch gets the destination cacheline aligned then uses dcbz on whole cachelines. Before: 10485760000 bytes (10 GB) copied, 0.414744 s, 25.3 GB/s After: 10485760000 bytes (10 GB) copied, 0.268597 s, 39.0 GB/s 39 GB/s, a new record. Signed-off-by: Anton Blanchard <anton@samba.org> Tested-by: Olof Johansson <olof@lixom.net> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2012-07-03 14:14:48 +10:00
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Makefile	powerpc: POWER7 optimised memcpy using VMX and enhanced prefetch	2012-07-03 14:14:46 +10:00
alloc.c	Disintegrate asm/system.h for PowerPC	2012-03-28 18:30:02 +01:00
checksum_32.S	powerpc: Rename files to have consistent _32/_64 suffixes	2005-10-10 21:52:43 +10:00
checksum_64.S	powerpc: Optimise 64bit csum_partial_copy_generic and add csum_and_copy_from_user	2010-09-02 14:07:30 +10:00
checksum_wrappers_64.c	powerpc: various straight conversions from module.h --> export.h	2011-10-31 19:30:44 -04:00
code-patching.c	powerpc: Have patch_instruction detect faults	2012-07-03 14:14:38 +10:00
copy_32.S	powerpc: Fix incorrect .stabs entry for copy_32.S	2010-09-02 14:07:34 +10:00
copypage_64.S	powerpc: POWER7 optimised copy_page using VMX and enhanced prefetch	2012-07-03 14:14:44 +10:00
copypage_power7.S	powerpc: POWER7 optimised copy_page using VMX and enhanced prefetch	2012-07-03 14:14:44 +10:00
copyuser_64.S	powerpc: Remove CONFIG_POWER4_ONLY	2012-04-30 15:37:26 +10:00
copyuser_power7.S	powerpc: Use enhanced touch instructions in POWER7 copy_to_user/copy_from_user	2012-07-03 14:14:45 +10:00
crtsavres.S	powerpc: Fix module building for gcc 4.5 and 64 bit	2010-07-08 18:11:38 +10:00
devres.c	powerpc: various straight conversions from module.h --> export.h	2011-10-31 19:30:44 -04:00
div64.S	powerpc: Fix a corner case in __div64_32	2005-10-20 09:37:02 +10:00
feature-fixups-test.S	powerpc: Ensure the else case of feature sections will fit	2011-01-21 14:08:33 +11:00
feature-fixups.c	powerpc: Copy down exception vectors after feature fixups	2011-11-16 14:47:54 +11:00
hweight_64.S	powerpc: Hardcode popcnt instructions for old assemblers	2010-12-09 15:35:30 +11:00
ldstfp.S	powerpc: mtmsrd not defined	2010-09-02 14:07:34 +10:00
locks.c	powerpc: Remove FW_FEATURE ISERIES from arch code	2012-03-21 11:16:11 +11:00
mem_64.S	powerpc: Remove CONFIG_POWER4_ONLY	2012-04-30 15:37:26 +10:00
memcpy_64.S	powerpc: POWER7 optimised memcpy using VMX and enhanced prefetch	2012-07-03 14:14:46 +10:00
memcpy_power7.S	powerpc: POWER7 optimised memcpy using VMX and enhanced prefetch	2012-07-03 14:14:46 +10:00
rheap.c	powerpc: various straight conversions from module.h --> export.h	2011-10-31 19:30:44 -04:00
sstep.c	Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2011-05-20 13:28:01 -07:00
string.S	powerpc: 64bit optimised __clear_user	2012-07-03 14:14:41 +10:00
string_64.S	powerpc: Optimise the 64bit optimised __clear_user	2012-07-03 14:14:48 +10:00
usercopy_64.c	powerpc: Rename files to have consistent _32/_64 suffixes	2005-10-10 21:52:43 +10:00
vmx-helper.c	powerpc: POWER7 optimised copy_page using VMX and enhanced prefetch	2012-07-03 14:14:44 +10:00