Commit f55d6385 authored Mar 18, 2009 by Heiko Carstens Committed by Martin Schwidefsky Mar 18, 2009

[S390] topology: define SD_MC_INIT to fix performance regression



The default values for SD_MC_INIT cause an additional cpu usage of up
to 40% on some network benchmarks compared to the plain SD_CPU_INIT
values. So just define SD_MC_INIT to SD_CPU_INIT.
More tuning needs to be done.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent 4fa81ed2

arch/s390/include/asm/topology.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,8 @@ static inline void s390_init_cpu_topology(void)
		};
		#endif

		#define SD_MC_INIT SD_CPU_INIT

		#include <asm-generic/topology.h>

		#endif /* _ASM_S390_TOPOLOGY_H */