On Wed, Oct 06, 2010 at 11:01:35AM +0300, Pekka Enberg wrote:(Adding more people who've taken interest in slab performance in theI have not come even close to reviewing this yet but I made a start on
past to CC.)
putting it through a series of tests. It fails to build on ppc64
CC mm/slub.o
mm/slub.c:1477: warning: 'drain_alien_caches' declared inline after being called
mm/slub.c:1477: warning: previous declaration of 'drain_alien_caches' was here
mm/slub.c: In function `alloc_shared_caches':Yeah, cpu_info.llc_shared_map is an x86ism. Christoph?
mm/slub.c:1748: error: `cpu_info' undeclared (first use in this function)
mm/slub.c:1748: error: (Each undeclared identifier is reported only once
mm/slub.c:1748: error: for each function it appears in.)
mm/slub.c:1748: warning: type defaults to `int' in declaration of `type name'
mm/slub.c:1748: warning: type defaults to `int' in declaration of `type name'
mm/slub.c:1748: warning: type defaults to `int' in declaration of `type name'
mm/slub.c:1748: warning: type defaults to `int' in declaration of `type name'
mm/slub.c:1748: error: invalid type argument of `unary *'
make[1]: *** [mm/slub.o] Error 1
make: *** [mm] Error 2
I didn't look closely yet but cpu_info is an arch-specific variable.
Checking to see if there is a known fix yet before setting aside time to
dig deeper.