1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Performance event support - s390 specific definitions. 4 * 5 * Copyright IBM Corp. 2009, 2017 6 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> 7 * Hendrik Brueckner <brueckner@linux.vnet.ibm.com> 8 */ 9 10 #ifndef _ASM_S390_PERF_EVENT_H 11 #define _ASM_S390_PERF_EVENT_H 12 13 #include <linux/perf_event.h> 14 #include <linux/device.h> 15 #include <asm/stacktrace.h> 16 17 /* Per-CPU flags for PMU states */ 18 #define PMU_F_RESERVED 0x1000 19 #define PMU_F_ENABLED 0x2000 20 #define PMU_F_IN_USE 0x4000 21 #define PMU_F_ERR_IBE 0x0100 22 #define PMU_F_ERR_LSDA 0x0200 23 #define PMU_F_ERR_MASK (PMU_F_ERR_IBE|PMU_F_ERR_LSDA) 24 25 /* Perf definitions for PMU event attributes in sysfs */ 26 extern __init const struct attribute_group **cpumf_cf_event_group(void); 27 extern ssize_t cpumf_events_sysfs_show(struct device *dev, 28 struct device_attribute *attr, 29 char *page); 30 #define EVENT_VAR(_cat, _name) event_attr_##_cat##_##_name 31 #define EVENT_PTR(_cat, _name) (&EVENT_VAR(_cat, _name).attr.attr) 32 33 #define CPUMF_EVENT_ATTR(cat, name, id) \ 34 PMU_EVENT_ATTR(name, EVENT_VAR(cat, name), id, cpumf_events_sysfs_show) 35 #define CPUMF_EVENT_PTR(cat, name) EVENT_PTR(cat, name) 36 37 38 /* Perf callbacks */ 39 struct pt_regs; 40 extern unsigned long perf_instruction_pointer(struct pt_regs *regs); 41 extern unsigned long perf_misc_flags(struct pt_regs *regs); 42 #define perf_misc_flags(regs) perf_misc_flags(regs) 43 #define perf_arch_bpf_user_pt_regs(regs) ®s->user_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 0xffffUL /* Max ctr for ECCTR */ 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_EVENT_CPUM_CF_DIAG 0xBC000UL /* Event: Counter sets */ 59 #define PERF_CPUM_SF_BASIC_MODE 0x0001 /* Basic-sampling flag */ 60 #define PERF_CPUM_SF_DIAG_MODE 0x0002 /* Diagnostic-sampling flag */ 61 #define PERF_CPUM_SF_MODE_MASK (PERF_CPUM_SF_BASIC_MODE| \ 62 PERF_CPUM_SF_DIAG_MODE) 63 #define PERF_CPUM_SF_FULL_BLOCKS 0x0004 /* Process full SDBs only */ 64 #define PERF_CPUM_SF_FREQ_MODE 0x0008 /* Sampling with frequency */ 65 66 #define REG_NONE 0 67 #define REG_OVERFLOW 1 68 #define OVERFLOW_REG(hwc) ((hwc)->extra_reg.config) 69 #define SFB_ALLOC_REG(hwc) ((hwc)->extra_reg.alloc) 70 #define TEAR_REG(hwc) ((hwc)->last_tag) 71 #define SAMPL_RATE(hwc) ((hwc)->event_base) 72 #define SAMPL_FLAGS(hwc) ((hwc)->config_base) 73 #define SAMPL_DIAG_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE) 74 #define SDB_FULL_BLOCKS(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS) 75 #define SAMPLE_FREQ_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FREQ_MODE) 76 77 #define perf_arch_fetch_caller_regs(regs, __ip) do { \ 78 (regs)->psw.addr = (__ip); \ 79 (regs)->gprs[15] = (unsigned long)__builtin_frame_address(0) - \ 80 offsetof(struct stack_frame, back_chain); \ 81 } while (0) 82 83 #endif /* _ASM_S390_PERF_EVENT_H */ 84