1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Performance event support - s390 specific definitions. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright IBM Corp. 2009, 2017 6*4882a593Smuzhiyun * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> 7*4882a593Smuzhiyun * Hendrik Brueckner <brueckner@linux.vnet.ibm.com> 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef _ASM_S390_PERF_EVENT_H 11*4882a593Smuzhiyun #define _ASM_S390_PERF_EVENT_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/perf_event.h> 14*4882a593Smuzhiyun #include <linux/device.h> 15*4882a593Smuzhiyun #include <asm/stacktrace.h> 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun /* Per-CPU flags for PMU states */ 18*4882a593Smuzhiyun #define PMU_F_RESERVED 0x1000 19*4882a593Smuzhiyun #define PMU_F_ENABLED 0x2000 20*4882a593Smuzhiyun #define PMU_F_IN_USE 0x4000 21*4882a593Smuzhiyun #define PMU_F_ERR_IBE 0x0100 22*4882a593Smuzhiyun #define PMU_F_ERR_LSDA 0x0200 23*4882a593Smuzhiyun #define PMU_F_ERR_MASK (PMU_F_ERR_IBE|PMU_F_ERR_LSDA) 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* Perf definitions for PMU event attributes in sysfs */ 26*4882a593Smuzhiyun extern __init const struct attribute_group **cpumf_cf_event_group(void); 27*4882a593Smuzhiyun extern ssize_t cpumf_events_sysfs_show(struct device *dev, 28*4882a593Smuzhiyun struct device_attribute *attr, 29*4882a593Smuzhiyun char *page); 30*4882a593Smuzhiyun #define EVENT_VAR(_cat, _name) event_attr_##_cat##_##_name 31*4882a593Smuzhiyun #define EVENT_PTR(_cat, _name) (&EVENT_VAR(_cat, _name).attr.attr) 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #define CPUMF_EVENT_ATTR(cat, name, id) \ 34*4882a593Smuzhiyun PMU_EVENT_ATTR(name, EVENT_VAR(cat, name), id, cpumf_events_sysfs_show) 35*4882a593Smuzhiyun #define CPUMF_EVENT_PTR(cat, name) EVENT_PTR(cat, name) 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun /* Perf callbacks */ 39*4882a593Smuzhiyun struct pt_regs; 40*4882a593Smuzhiyun extern unsigned long perf_instruction_pointer(struct pt_regs *regs); 41*4882a593Smuzhiyun extern unsigned long perf_misc_flags(struct pt_regs *regs); 42*4882a593Smuzhiyun #define perf_misc_flags(regs) perf_misc_flags(regs) 43*4882a593Smuzhiyun #define perf_arch_bpf_user_pt_regs(regs) ®s->user_regs 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun /* Perf pt_regs extension for sample-data-entry indicators */ 46*4882a593Smuzhiyun struct perf_sf_sde_regs { 47*4882a593Smuzhiyun unsigned char in_guest:1; /* guest sample */ 48*4882a593Smuzhiyun unsigned long reserved:63; /* reserved */ 49*4882a593Smuzhiyun }; 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun /* Perf PMU definitions for the counter facility */ 52*4882a593Smuzhiyun #define PERF_CPUM_CF_MAX_CTR 0xffffUL /* Max ctr for ECCTR */ 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun /* Perf PMU definitions for the sampling facility */ 55*4882a593Smuzhiyun #define PERF_CPUM_SF_MAX_CTR 2 56*4882a593Smuzhiyun #define PERF_EVENT_CPUM_SF 0xB0000UL /* Event: Basic-sampling */ 57*4882a593Smuzhiyun #define PERF_EVENT_CPUM_SF_DIAG 0xBD000UL /* Event: Combined-sampling */ 58*4882a593Smuzhiyun #define PERF_EVENT_CPUM_CF_DIAG 0xBC000UL /* Event: Counter sets */ 59*4882a593Smuzhiyun #define PERF_CPUM_SF_BASIC_MODE 0x0001 /* Basic-sampling flag */ 60*4882a593Smuzhiyun #define PERF_CPUM_SF_DIAG_MODE 0x0002 /* Diagnostic-sampling flag */ 61*4882a593Smuzhiyun #define PERF_CPUM_SF_MODE_MASK (PERF_CPUM_SF_BASIC_MODE| \ 62*4882a593Smuzhiyun PERF_CPUM_SF_DIAG_MODE) 63*4882a593Smuzhiyun #define PERF_CPUM_SF_FULL_BLOCKS 0x0004 /* Process full SDBs only */ 64*4882a593Smuzhiyun #define PERF_CPUM_SF_FREQ_MODE 0x0008 /* Sampling with frequency */ 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun #define REG_NONE 0 67*4882a593Smuzhiyun #define REG_OVERFLOW 1 68*4882a593Smuzhiyun #define OVERFLOW_REG(hwc) ((hwc)->extra_reg.config) 69*4882a593Smuzhiyun #define SFB_ALLOC_REG(hwc) ((hwc)->extra_reg.alloc) 70*4882a593Smuzhiyun #define TEAR_REG(hwc) ((hwc)->last_tag) 71*4882a593Smuzhiyun #define SAMPL_RATE(hwc) ((hwc)->event_base) 72*4882a593Smuzhiyun #define SAMPL_FLAGS(hwc) ((hwc)->config_base) 73*4882a593Smuzhiyun #define SAMPL_DIAG_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE) 74*4882a593Smuzhiyun #define SDB_FULL_BLOCKS(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS) 75*4882a593Smuzhiyun #define SAMPLE_FREQ_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FREQ_MODE) 76*4882a593Smuzhiyun 77*4882a593Smuzhiyun #define perf_arch_fetch_caller_regs(regs, __ip) do { \ 78*4882a593Smuzhiyun (regs)->psw.addr = (__ip); \ 79*4882a593Smuzhiyun (regs)->gprs[15] = (unsigned long)__builtin_frame_address(0) - \ 80*4882a593Smuzhiyun offsetof(struct stack_frame, back_chain); \ 81*4882a593Smuzhiyun } while (0) 82*4882a593Smuzhiyun 83*4882a593Smuzhiyun #endif /* _ASM_S390_PERF_EVENT_H */ 84