On Fri, 2008-02-29 at 11:04 -0500, Steven Rostedt wrote: > strncmp is defined in assembly for bootup, but it is not defined in the > normal running kernel. This patch takes the strncmp code from the bootup > and copies it to the kernel proper. > > Signed-off-by: Steven Rostedt <[EMAIL PROTECTED]> > ---
Do we have any indication that it performs better than the C one ? Ben. > arch/powerpc/kernel/ppc_ksyms.c | 1 + > arch/powerpc/lib/string.S | 12 ++++++++++++ > include/asm-powerpc/string.h | 2 ++ > 3 files changed, 15 insertions(+) > > Index: linux-sched-devel.git/arch/powerpc/kernel/ppc_ksyms.c > =================================================================== > --- linux-sched-devel.git.orig/arch/powerpc/kernel/ppc_ksyms.c > 2008-02-27 14:01:38.000000000 -0800 > +++ linux-sched-devel.git/arch/powerpc/kernel/ppc_ksyms.c 2008-02-29 > 07:24:22.000000000 -0800 > @@ -78,6 +78,7 @@ EXPORT_SYMBOL(strncpy); > EXPORT_SYMBOL(strcat); > EXPORT_SYMBOL(strlen); > EXPORT_SYMBOL(strcmp); > +EXPORT_SYMBOL(strncmp); > > EXPORT_SYMBOL(csum_partial); > EXPORT_SYMBOL(csum_partial_copy_generic); > Index: linux-sched-devel.git/arch/powerpc/lib/string.S > =================================================================== > --- linux-sched-devel.git.orig/arch/powerpc/lib/string.S 2008-02-27 > 14:01:38.000000000 -0800 > +++ linux-sched-devel.git/arch/powerpc/lib/string.S 2008-02-29 > 07:24:22.000000000 -0800 > @@ -75,6 +75,18 @@ _GLOBAL(strcmp) > beq 1b > blr > > +_GLOBAL(strncmp) > + mtctr r5 > + addi r5,r3,-1 > + addi r4,r4,-1 > +1: lbzu r3,1(r5) > + cmpwi 1,r3,0 > + lbzu r0,1(r4) > + subf. r3,r0,r3 > + beqlr 1 > + bdnzt eq,1b > + blr > + > _GLOBAL(strlen) > addi r4,r3,-1 > 1: lbzu r0,1(r4) > Index: linux-sched-devel.git/include/asm-powerpc/string.h > =================================================================== > --- linux-sched-devel.git.orig/include/asm-powerpc/string.h 2008-02-27 > 14:01:58.000000000 -0800 > +++ linux-sched-devel.git/include/asm-powerpc/string.h 2008-02-29 > 07:24:22.000000000 -0800 > @@ -7,6 +7,7 @@ > #define __HAVE_ARCH_STRNCPY > #define __HAVE_ARCH_STRLEN > #define __HAVE_ARCH_STRCMP > +#define __HAVE_ARCH_STRNCMP > #define __HAVE_ARCH_STRCAT > #define __HAVE_ARCH_MEMSET > #define __HAVE_ARCH_MEMCPY > @@ -18,6 +19,7 @@ extern char * strcpy(char *,const char * > extern char * strncpy(char *,const char *, __kernel_size_t); > extern __kernel_size_t strlen(const char *); > extern int strcmp(const char *,const char *); > +extern int strncmp(const char *,const char *,__kernel_size_t); > extern char * strcat(char *, const char *); > extern void * memset(void *,int,__kernel_size_t); > extern void * memcpy(void *,const void *,__kernel_size_t); > > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
