Jan Beulich 9ea811973d perf bench: Make "default" memcpy() selection actually use glibc's implementation ... Since arch/x86/lib/memcpy_64.S implements not only __memcpy, but also memcpy, without further precautions this function will get chose by the static linker for resolving all references, and hence the "default" measurement didn't really measure anything else than the "x86-64-unrolled" one. Fix this by renaming (through the pre-processor) the conflicting symbol. On my Westmere system, the glibc variant turns out to require about 4% less instructions, but 15% more cycles for the default 1Mb block size measured. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/4F16D6FD020000780006D72F@nat28.tlf.novell.com Signed-off-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2012-01-24 19:50:19 -02:00
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bench.h
mem-memcpy-arch.h	perf bench: Add feature that measures the performance of the arch/x86/lib/memcpy_64.S memcpy routines via 'perf bench mem'	2010-11-26 08:15:57 +01:00
mem-memcpy-x86-64-asm-def.h	perf bench: Add feature that measures the performance of the arch/x86/lib/memcpy_64.S memcpy routines via 'perf bench mem'	2010-11-26 08:15:57 +01:00
mem-memcpy-x86-64-asm.S	perf bench: Make "default" memcpy() selection actually use glibc's implementation	2012-01-24 19:50:19 -02:00
mem-memcpy.c	perf bench: Print both of prefaulted and no prefaulted results by default	2010-11-26 08:15:57 +01:00
sched-messaging.c
sched-pipe.c	perf tool: Fix gcc 4.6.0 issues	2011-02-07 12:41:41 -02:00