From 8c069ff4bd6063a3f15e606c882e03f75c7e7711 Mon Sep 17 00:00:00 2001 From: Hendrik Brueckner Date: Thu, 12 Dec 2013 16:32:47 +0100 Subject: s390/perf: add support for the CPU-Measurement Sampling Facility Introduce a perf PMU, "cpum_sf", to support the CPU-Measurement Sampling Facility. You can control the sampling facility through this perf PMU interfaces. Perf sampling events are created for hardware samples. For details about the CPU-Measurement Sampling Facility, see "The Load-Program-Parameter and the CPU-Measurement Facilities" (SA23-2260). Signed-off-by: Hendrik Brueckner Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/perf_event.h | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'arch/s390/include/asm/perf_event.h') diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h index 34185020ae0a..b4eea25f379e 100644 --- a/arch/s390/include/asm/perf_event.h +++ b/arch/s390/include/asm/perf_event.h @@ -15,12 +15,13 @@ #include #include -/* CPU-measurement counter facility */ -#define PERF_CPUM_CF_MAX_CTR 256 - /* Per-CPU flags for PMU states */ #define PMU_F_RESERVED 0x1000 #define PMU_F_ENABLED 0x2000 +#define PMU_F_IN_USE 0x4000 +#define PMU_F_ERR_IBE 0x0100 +#define PMU_F_ERR_LSDA 0x0200 +#define PMU_F_ERR_MASK (PMU_F_ERR_IBE|PMU_F_ERR_LSDA) /* Perf defintions for PMU event attributes in sysfs */ extern __init const struct attribute_group **cpumf_cf_event_group(void); @@ -41,5 +42,15 @@ extern unsigned long perf_instruction_pointer(struct pt_regs *regs); extern unsigned long perf_misc_flags(struct pt_regs *regs); #define perf_misc_flags(regs) perf_misc_flags(regs) +/* Perf PMU definitions for the counter facility */ +#define PERF_CPUM_CF_MAX_CTR 256 + +/* Perf PMU definitions for the sampling facility */ +#define PERF_CPUM_SF_MAX_CTR 1 +#define PERF_EVENT_CPUM_SF 0xB0000UL /* Raw event ID */ + +#define TEAR_REG(hwc) ((hwc)->last_tag) +#define SAMPL_RATE(hwc) ((hwc)->event_base) + #endif /* CONFIG_64BIT */ #endif /* _ASM_S390_PERF_EVENT_H */ -- cgit