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Robin Getz 648eee52cc Blackfin: optimize strncpy a bit ... Add a little strncpy optimization which can easily cut boot time by 20%. When the kernel is booting with initramfs, it builds up the filesystem from a cpio archive by calling strncpy_from_user() via fs/namei.c's do_getname() on every file in the archive (which can be lots) with a length of PATH_MAX (1024). This causes the dest of the strncpy to be padded with many NUL bytes. This optimization mostly causes these NUL bytes to be padded with a call to memset() which is already optimized for filling memory quickly, but the hardware loop helps a little bit as well. Boot time measured with 'loglevel=0' so UART speed doesn't get in the way. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>		15 years ago
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Makefile	…
ashldi3.c	…
ashrdi3.c	…
divsi3.S	…
gcclib.h	…
ins.S	…
lshrdi3.c	…
memchr.S	…
memcmp.S	…
memcpy.S	…
memmove.S	…
memset.S	Blackfin: optimize strncpy a bit	15 years ago
modsi3.S	…
muldi3.S	…
outs.S	…
smulsi3_highpart.S	…
strcmp.S	Blackfin: move string functions to normal lib/ assembly	15 years ago
strcpy.S	Blackfin: move string functions to normal lib/ assembly	15 years ago
strncmp.S	Blackfin: move string functions to normal lib/ assembly	15 years ago
strncpy.S	Blackfin: optimize strncpy a bit	15 years ago
udivsi3.S	…
umodsi3.S	…
umulsi3_highpart.S	…