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_arch_instruction_pointer(struct pt_regs *regs); 41 extern unsigned long perf_arch_misc_flags(struct pt_regs *regs); 42 #define perf_arch_misc_flags(regs) perf_arch_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 #define perf_arch_fetch_caller_regs(regs, __ip) do { \ 52 (regs)->psw.mask = 0; \ 53 (regs)->psw.addr = (__ip); \ 54 (regs)->gprs[15] = (unsigned long)__builtin_frame_address(0) - \ 55 offsetof(struct stack_frame, back_chain); \ 56 } while (0) 57 58 #endif /* _ASM_S390_PERF_EVENT_H */ 59