linux

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History

Ingo Molnar 95108fa34a x86: usercopy: check for total size when deciding non-temporal cutoff

Impact: make more types of copies non-temporal

This change makes the following simple fix:

  30d697f: x86: fix performance regression in write() syscall

A bit more sophisticated: we check the 'total' number of bytes
written to decide whether to copy in a cached or a non-temporal
way.

This will for example cause the tail (modulo 4096 bytes) chunk
of a large write() to be non-temporal too - not just the page-sized
chunks.

Cc: Salman Qazi <sqazi@google.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2009-02-25 10:20:05 +01:00

boot

Merge branches 'x86/asm', 'x86/cleanups' and 'x86/headers' into x86/core

2009-02-20 17:40:50 +01:00

configs

Merge branches 'x86/acpi', 'x86/asm', 'x86/cpudetect', 'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/doc', 'x86/header-fixes', 'x86/headers' and 'x86/minor-fixes' into x86/core

2009-02-13 09:46:36 +01:00

crypto

crypto: crc32c-intel - Switch to shash

2008-12-25 11:01:37 +11:00

ia32

Merge branch 'linus' into x86/apic