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 #ifdef CONFIG_64BIT 13 14 #include <linux/perf_event.h> 15 #include <linux/device.h> 16 #include <asm/cpu_mf.h> 17 18 /* Per-CPU flags for PMU states */ 19 #define PMU_F_RESERVED 0x1000 20 #define PMU_F_ENABLED 0x2000 21 #define PMU_F_IN_USE 0x4000 22 #define PMU_F_ERR_IBE 0x0100 23 #define PMU_F_ERR_LSDA 0x0200 24 #define PMU_F_ERR_MASK (PMU_F_ERR_IBE|PMU_F_ERR_LSDA) 25 26 /* Perf defintions for PMU event attributes in sysfs */ 27 extern __init const struct attribute_group **cpumf_cf_event_group(void); 28 extern ssize_t cpumf_events_sysfs_show(struct device *dev, 29 struct device_attribute *attr, 30 char *page); 31 #define EVENT_VAR(_cat, _name) event_attr_##_cat##_##_name 32 #define EVENT_PTR(_cat, _name) (&EVENT_VAR(_cat, _name).attr.attr) 33 34 #define CPUMF_EVENT_ATTR(cat, name, id) \ 35 PMU_EVENT_ATTR(name, EVENT_VAR(cat, name), id, cpumf_events_sysfs_show) 36 #define CPUMF_EVENT_PTR(cat, name) EVENT_PTR(cat, name) 37 38 39 /* Perf callbacks */ 40 struct pt_regs; 41 extern unsigned long perf_instruction_pointer(struct pt_regs *regs); 42 extern unsigned long perf_misc_flags(struct pt_regs *regs); 43 #define perf_misc_flags(regs) perf_misc_flags(regs) 44 45 /* Perf pt_regs extension for sample-data-entry indicators */ 46 struct perf_sf_sde_regs { 47 unsigned char in_guest:1; /* guest sample */ 48 unsigned long reserved:63; /* reserved */ 49 }; 50 51 /* Perf PMU definitions for the counter facility */ 52 #define PERF_CPUM_CF_MAX_CTR 256 53 54 /* Perf PMU definitions for the sampling facility */ 55 #define PERF_CPUM_SF_MAX_CTR 2 56 #define PERF_EVENT_CPUM_SF 0xB0000UL /* Event: Basic-sampling */ 57 #define PERF_EVENT_CPUM_SF_DIAG 0xBD000UL /* Event: Combined-sampling */ 58 #define PERF_CPUM_SF_BASIC_MODE 0x0001 /* Basic-sampling flag */ 59 #define PERF_CPUM_SF_DIAG_MODE 0x0002 /* Diagnostic-sampling flag */ 60 #define PERF_CPUM_SF_MODE_MASK (PERF_CPUM_SF_BASIC_MODE| \ 61 PERF_CPUM_SF_DIAG_MODE) 62 #define PERF_CPUM_SF_FULL_BLOCKS 0x0004 /* Process full SDBs only */ 63 64 #define REG_NONE 0 65 #define REG_OVERFLOW 1 66 #define OVERFLOW_REG(hwc) ((hwc)->extra_reg.config) 67 #define SFB_ALLOC_REG(hwc) ((hwc)->extra_reg.alloc) 68 #define RAWSAMPLE_REG(hwc) ((hwc)->config) 69 #define TEAR_REG(hwc) ((hwc)->last_tag) 70 #define SAMPL_RATE(hwc) ((hwc)->event_base) 71 #define SAMPL_FLAGS(hwc) ((hwc)->config_base) 72 #define SAMPL_DIAG_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE) 73 #define SDB_FULL_BLOCKS(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS) 74 75 /* Structure for sampling data entries to be passed as perf raw sample data 76 * to user space. Note that raw sample data must be aligned and, thus, might 77 * be padded with zeros. 78 */ 79 struct sf_raw_sample { 80 #define SF_RAW_SAMPLE_BASIC PERF_CPUM_SF_BASIC_MODE 81 #define SF_RAW_SAMPLE_DIAG PERF_CPUM_SF_DIAG_MODE 82 u64 format; 83 u32 size; /* Size of sf_raw_sample */ 84 u16 bsdes; /* Basic-sampling data entry size */ 85 u16 dsdes; /* Diagnostic-sampling data entry size */ 86 struct hws_basic_entry basic; /* Basic-sampling data entry */ 87 struct hws_diag_entry diag; /* Diagnostic-sampling data entry */ 88 u8 padding[]; /* Padding to next multiple of 8 */ 89 } __packed; 90 91 /* Perf hardware reserve and release functions */ 92 int perf_reserve_sampling(void); 93 void perf_release_sampling(void); 94 95 #endif /* CONFIG_64BIT */ 96 #endif /* _ASM_S390_PERF_EVENT_H */ 97