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/* * Performance event support - s390 specific definitions. * * Copyright IBM Corp. 2009, 2013 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> * Hendrik Brueckner <brueckner@linux.vnet.ibm.com> */ #ifndef _ASM_S390_PERF_EVENT_H #define _ASM_S390_PERF_EVENT_H #include <linux/perf_event.h> #include <linux/device.h> #include <asm/cpu_mf.h> /* 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); extern ssize_t cpumf_events_sysfs_show(struct device *dev, struct device_attribute *attr, char *page); #define EVENT_VAR(_cat, _name) event_attr_##_cat##_##_name #define EVENT_PTR(_cat, _name) (&EVENT_VAR(_cat, _name).attr.attr) #define CPUMF_EVENT_ATTR(cat, name, id) \ PMU_EVENT_ATTR(name, EVENT_VAR(cat, name), id, cpumf_events_sysfs_show) #define CPUMF_EVENT_PTR(cat, name) EVENT_PTR(cat, name) /* Perf callbacks */ struct pt_regs; 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 pt_regs extension for sample-data-entry indicators */ struct perf_sf_sde_regs { unsigned char in_guest:1; /* guest sample */ unsigned long reserved:63; /* reserved */ }; /* 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 2 #define PERF_EVENT_CPUM_SF 0xB0000UL /* Event: Basic-sampling */ #define PERF_EVENT_CPUM_SF_DIAG 0xBD000UL /* Event: Combined-sampling */ #define PERF_CPUM_SF_BASIC_MODE 0x0001 /* Basic-sampling flag */ #define PERF_CPUM_SF_DIAG_MODE 0x0002 /* Diagnostic-sampling flag */ #define PERF_CPUM_SF_MODE_MASK (PERF_CPUM_SF_BASIC_MODE| \ PERF_CPUM_SF_DIAG_MODE) #define PERF_CPUM_SF_FULL_BLOCKS 0x0004 /* Process full SDBs only */ #define REG_NONE 0 #define REG_OVERFLOW 1 #define OVERFLOW_REG(hwc) ((hwc)->extra_reg.config) #define SFB_ALLOC_REG(hwc) ((hwc)->extra_reg.alloc) #define RAWSAMPLE_REG(hwc) ((hwc)->config) #define TEAR_REG(hwc) ((hwc)->last_tag) #define SAMPL_RATE(hwc) ((hwc)->event_base) #define SAMPL_FLAGS(hwc) ((hwc)->config_base) #define SAMPL_DIAG_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE) #define SDB_FULL_BLOCKS(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS) /* Structure for sampling data entries to be passed as perf raw sample data * to user space. Note that raw sample data must be aligned and, thus, might * be padded with zeros. */ struct sf_raw_sample { #define SF_RAW_SAMPLE_BASIC PERF_CPUM_SF_BASIC_MODE #define SF_RAW_SAMPLE_DIAG PERF_CPUM_SF_DIAG_MODE u64 format; u32 size; /* Size of sf_raw_sample */ u16 bsdes; /* Basic-sampling data entry size */ u16 dsdes; /* Diagnostic-sampling data entry size */ struct hws_basic_entry basic; /* Basic-sampling data entry */ struct hws_diag_entry diag; /* Diagnostic-sampling data entry */ u8 padding[]; /* Padding to next multiple of 8 */ } __packed; /* Perf hardware reserve and release functions */ #ifdef CONFIG_PERF_EVENTS int perf_reserve_sampling(void); void perf_release_sampling(void); #else /* CONFIG_PERF_EVENTS */ static inline int perf_reserve_sampling(void) { return 0; } static inline void perf_release_sampling(void) {} #endif /* CONFIG_PERF_EVENTS */ #endif /* _ASM_S390_PERF_EVENT_H */ |