2 * Performance event support - s390 specific definitions.
4 * Copyright IBM Corp. 2009, 2013
9 #ifndef _ASM_S390_PERF_EVENT_H
10 #define _ASM_S390_PERF_EVENT_H
14 #include <linux/perf_event.h>
15 #include <linux/device.h>
16 #include <asm/cpu_mf.h>
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)
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,
31 #define EVENT_VAR(_cat, _name) event_attr_##_cat##_##_name
32 #define EVENT_PTR(_cat, _name) (&EVENT_VAR(_cat, _name).attr.attr)
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)
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)
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 */
51 /* Perf PMU definitions for the counter facility */
52 #define PERF_CPUM_CF_MAX_CTR 256
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 */
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)
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.
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
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 */
91 /* Perf hardware reserve and release functions */
92 int perf_reserve_sampling(void);
93 void perf_release_sampling(void);
95 #endif /* CONFIG_64BIT */
96 #endif /* _ASM_S390_PERF_EVENT_H */