From 57852a853b0d6761f270be0961d5d8387e98c8bb Mon Sep 17 00:00:00 2001 From: Mike Kravetz Date: Wed, 6 Sep 2006 16:23:12 -0700 Subject: [POWERPC] powerpc: Instrument Hypervisor Calls Add instrumentation for hypervisor calls on pseries. Call statistics include number of calls, wall time and cpu cycles (if available) and are made available via debugfs. Instrumentation code is behind the HCALL_STATS config option and has no impact if not enabled. Signed-off-by: Mike Kravetz Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/asm-offsets.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/powerpc/kernel') diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index c53acd2a6dfc..c578e7ab8173 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -137,6 +137,7 @@ int main(void) DEFINE(PACA_USER_TIME, offsetof(struct paca_struct, user_time)); DEFINE(PACA_SYSTEM_TIME, offsetof(struct paca_struct, system_time)); DEFINE(PACA_SLBSHADOWPTR, offsetof(struct paca_struct, slb_shadow_ptr)); + DEFINE(PACA_DATA_OFFSET, offsetof(struct paca_struct, data_offset)); DEFINE(SLBSHADOW_STACKVSID, offsetof(struct slb_shadow, save_area[SLB_NUM_BOLTED - 1].vsid)); @@ -165,6 +166,12 @@ int main(void) /* Create extra stack space for SRR0 and SRR1 when calling prom/rtas. */ DEFINE(PROM_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16); DEFINE(RTAS_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16); + + /* hcall statistics */ + DEFINE(HCALL_STAT_SIZE, sizeof(struct hcall_stats)); + DEFINE(HCALL_STAT_CALLS, offsetof(struct hcall_stats, num_calls)); + DEFINE(HCALL_STAT_TB, offsetof(struct hcall_stats, tb_total)); + DEFINE(HCALL_STAT_PURR, offsetof(struct hcall_stats, purr_total)); #endif /* CONFIG_PPC64 */ DEFINE(GPR0, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[0])); DEFINE(GPR1, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[1])); -- cgit v1.2.3