| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Performance event support - s390 specific definitions. |
| * |
| * Copyright IBM Corp. 2009, 2017 |
| * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> |
| * Hendrik Brueckner <brueckner@linux.vnet.ibm.com> |
| */ |
| |
| #ifndef _ASM_S390_PERF_EVENT_H |
| #define _ASM_S390_PERF_EVENT_H |
| |
| #include <linux/perf_event.h> |
| #include <linux/device.h> |
| #include <asm/stacktrace.h> |
| |
| /* Per-CPU flags for PMU states */ |
| #define PMU_F_RESERVED 0x1000 |
| #define PMU_F_ENABLED 0x2000 |
| #define PMU_F_IN_USE 0x4000 |
| #define PMU_F_ERR_IBE 0x0100 |
| #define PMU_F_ERR_LSDA 0x0200 |
| #define PMU_F_ERR_MASK (PMU_F_ERR_IBE|PMU_F_ERR_LSDA) |
| |
| /* Perf definitions for PMU event attributes in sysfs */ |
| extern __init const struct attribute_group **cpumf_cf_event_group(void); |
| extern ssize_t cpumf_events_sysfs_show(struct device *dev, |
| struct device_attribute *attr, |
| char *page); |
| #define EVENT_VAR(_cat, _name) event_attr_##_cat##_##_name |
| #define EVENT_PTR(_cat, _name) (&EVENT_VAR(_cat, _name).attr.attr) |
| |
| #define CPUMF_EVENT_ATTR(cat, name, id) \ |
| PMU_EVENT_ATTR(name, EVENT_VAR(cat, name), id, cpumf_events_sysfs_show) |
| #define CPUMF_EVENT_PTR(cat, name) EVENT_PTR(cat, name) |
| |
| |
| /* Perf callbacks */ |
| struct pt_regs; |
| extern unsigned long perf_instruction_pointer(struct pt_regs *regs); |
| extern unsigned long perf_misc_flags(struct pt_regs *regs); |
| #define perf_misc_flags(regs) perf_misc_flags(regs) |
| #define perf_arch_bpf_user_pt_regs(regs) ®s->user_regs |
| |
| /* Perf pt_regs extension for sample-data-entry indicators */ |
| struct perf_sf_sde_regs { |
| unsigned char in_guest:1; /* guest sample */ |
| unsigned long reserved:63; /* reserved */ |
| }; |
| |
| /* Perf PMU definitions for the counter facility */ |
| #define PERF_CPUM_CF_MAX_CTR 0xffffUL /* Max ctr for ECCTR */ |
| |
| /* Perf PMU definitions for the sampling facility */ |
| #define PERF_CPUM_SF_MAX_CTR 2 |
| #define PERF_EVENT_CPUM_SF 0xB0000UL /* Event: Basic-sampling */ |
| #define PERF_EVENT_CPUM_SF_DIAG 0xBD000UL /* Event: Combined-sampling */ |
| #define PERF_EVENT_CPUM_CF_DIAG 0xBC000UL /* Event: Counter sets */ |
| #define PERF_CPUM_SF_BASIC_MODE 0x0001 /* Basic-sampling flag */ |
| #define PERF_CPUM_SF_DIAG_MODE 0x0002 /* Diagnostic-sampling flag */ |
| #define PERF_CPUM_SF_MODE_MASK (PERF_CPUM_SF_BASIC_MODE| \ |
| PERF_CPUM_SF_DIAG_MODE) |
| #define PERF_CPUM_SF_FULL_BLOCKS 0x0004 /* Process full SDBs only */ |
| #define PERF_CPUM_SF_FREQ_MODE 0x0008 /* Sampling with frequency */ |
| |
| #define REG_NONE 0 |
| #define REG_OVERFLOW 1 |
| #define OVERFLOW_REG(hwc) ((hwc)->extra_reg.config) |
| #define SFB_ALLOC_REG(hwc) ((hwc)->extra_reg.alloc) |
| #define TEAR_REG(hwc) ((hwc)->last_tag) |
| #define SAMPL_RATE(hwc) ((hwc)->event_base) |
| #define SAMPL_FLAGS(hwc) ((hwc)->config_base) |
| #define SAMPL_DIAG_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE) |
| #define SDB_FULL_BLOCKS(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS) |
| #define SAMPLE_FREQ_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FREQ_MODE) |
| |
| #define perf_arch_fetch_caller_regs(regs, __ip) do { \ |
| (regs)->psw.addr = (__ip); \ |
| (regs)->gprs[15] = (unsigned long)__builtin_frame_address(0) - \ |
| offsetof(struct stack_frame, back_chain); \ |
| } while (0) |
| |
| #endif /* _ASM_S390_PERF_EVENT_H */ |
