1 /* 2 * Performance event support - s390 specific definitions. 3 * 4 * Copyright IBM Corp. 2009, 2013 5 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> 6 * Hendrik Brueckner <brueckner@linux.vnet.ibm.com> 7 */ 8 9 #ifndef _ASM_S390_PERF_EVENT_H 10 #define _ASM_S390_PERF_EVENT_H 11 12 #include <linux/perf_event.h> 13 #include <linux/device.h> 14 #include <asm/cpu_mf.h> 15 16 /* Per-CPU flags for PMU states */ 17 #define PMU_F_RESERVED 0x1000 18 #define PMU_F_ENABLED 0x2000 19 #define PMU_F_IN_USE 0x4000 20 #define PMU_F_ERR_IBE 0x0100 21 #define PMU_F_ERR_LSDA 0x0200 22 #define PMU_F_ERR_MASK (PMU_F_ERR_IBE|PMU_F_ERR_LSDA) 23 24 /* Perf defintions for PMU event attributes in sysfs */ 25 extern __init const struct attribute_group **cpumf_cf_event_group(void); 26 extern ssize_t cpumf_events_sysfs_show(struct device *dev, 27 struct device_attribute *attr, 28 char *page); 29 #define EVENT_VAR(_cat, _name) event_attr_##_cat##_##_name 30 #define EVENT_PTR(_cat, _name) (&EVENT_VAR(_cat, _name).attr.attr) 31 32 #define CPUMF_EVENT_ATTR(cat, name, id) \ 33 PMU_EVENT_ATTR(name, EVENT_VAR(cat, name), id, cpumf_events_sysfs_show) 34 #define CPUMF_EVENT_PTR(cat, name) EVENT_PTR(cat, name) 35 36 37 /* Perf callbacks */ 38 struct pt_regs; 39 extern unsigned long perf_instruction_pointer(struct pt_regs *regs); 40 extern unsigned long perf_misc_flags(struct pt_regs *regs); 41 #define perf_misc_flags(regs) perf_misc_flags(regs) 42 43 /* Perf pt_regs extension for sample-data-entry indicators */ 44 struct perf_sf_sde_regs { 45 unsigned char in_guest:1; /* guest sample */ 46 unsigned long reserved:63; /* reserved */ 47 }; 48 49 /* Perf PMU definitions for the counter facility */ 50 #define PERF_CPUM_CF_MAX_CTR 256 51 52 /* Perf PMU definitions for the sampling facility */ 53 #define PERF_CPUM_SF_MAX_CTR 2 54 #define PERF_EVENT_CPUM_SF 0xB0000UL /* Event: Basic-sampling */ 55 #define PERF_EVENT_CPUM_SF_DIAG 0xBD000UL /* Event: Combined-sampling */ 56 #define PERF_CPUM_SF_BASIC_MODE 0x0001 /* Basic-sampling flag */ 57 #define PERF_CPUM_SF_DIAG_MODE 0x0002 /* Diagnostic-sampling flag */ 58 #define PERF_CPUM_SF_MODE_MASK (PERF_CPUM_SF_BASIC_MODE| \ 59 PERF_CPUM_SF_DIAG_MODE) 60 #define PERF_CPUM_SF_FULL_BLOCKS 0x0004 /* Process full SDBs only */ 61 62 #define REG_NONE 0 63 #define REG_OVERFLOW 1 64 #define OVERFLOW_REG(hwc) ((hwc)->extra_reg.config) 65 #define SFB_ALLOC_REG(hwc) ((hwc)->extra_reg.alloc) 66 #define RAWSAMPLE_REG(hwc) ((hwc)->config) 67 #define TEAR_REG(hwc) ((hwc)->last_tag) 68 #define SAMPL_RATE(hwc) ((hwc)->event_base) 69 #define SAMPL_FLAGS(hwc) ((hwc)->config_base) 70 #define SAMPL_DIAG_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE) 71 #define SDB_FULL_BLOCKS(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS) 72 73 /* Structure for sampling data entries to be passed as perf raw sample data 74 * to user space. Note that raw sample data must be aligned and, thus, might 75 * be padded with zeros. 76 */ 77 struct sf_raw_sample { 78 #define SF_RAW_SAMPLE_BASIC PERF_CPUM_SF_BASIC_MODE 79 #define SF_RAW_SAMPLE_DIAG PERF_CPUM_SF_DIAG_MODE 80 u64 format; 81 u32 size; /* Size of sf_raw_sample */ 82 u16 bsdes; /* Basic-sampling data entry size */ 83 u16 dsdes; /* Diagnostic-sampling data entry size */ 84 struct hws_basic_entry basic; /* Basic-sampling data entry */ 85 struct hws_diag_entry diag; /* Diagnostic-sampling data entry */ 86 u8 padding[]; /* Padding to next multiple of 8 */ 87 } __packed; 88 89 /* Perf hardware reserve and release functions */ 90 int perf_reserve_sampling(void); 91 void perf_release_sampling(void); 92 93 #endif /* _ASM_S390_PERF_EVENT_H */ 94