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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /* |
3 | * Copyright (C) 2001-2003 Hewlett-Packard Co | |
4 | * Stephane Eranian <eranian@hpl.hp.com> | |
5 | */ | |
1da177e4 LT |
6 | #ifndef _ASM_IA64_PERFMON_H |
7 | #define _ASM_IA64_PERFMON_H | |
8 | ||
43e40f25 | 9 | #include <uapi/asm/perfmon.h> |
1da177e4 LT |
10 | |
11 | ||
1da177e4 LT |
12 | extern long perfmonctl(int fd, int cmd, void *arg, int narg); |
13 | ||
a1ecf7f6 TL |
14 | typedef struct { |
15 | void (*handler)(int irq, void *arg, struct pt_regs *regs); | |
16 | } pfm_intr_handler_desc_t; | |
17 | ||
1da177e4 LT |
18 | extern void pfm_save_regs (struct task_struct *); |
19 | extern void pfm_load_regs (struct task_struct *); | |
20 | ||
21 | extern void pfm_exit_thread(struct task_struct *); | |
22 | extern int pfm_use_debug_registers(struct task_struct *); | |
23 | extern int pfm_release_debug_registers(struct task_struct *); | |
24 | extern void pfm_syst_wide_update_task(struct task_struct *, unsigned long info, int is_ctxswin); | |
25 | extern void pfm_inherit(struct task_struct *task, struct pt_regs *regs); | |
26 | extern void pfm_init_percpu(void); | |
27 | extern void pfm_handle_work(void); | |
a1ecf7f6 TL |
28 | extern int pfm_install_alt_pmu_interrupt(pfm_intr_handler_desc_t *h); |
29 | extern int pfm_remove_alt_pmu_interrupt(pfm_intr_handler_desc_t *h); | |
30 | ||
31 | ||
1da177e4 LT |
32 | |
33 | /* | |
34 | * Reset PMD register flags | |
35 | */ | |
36 | #define PFM_PMD_SHORT_RESET 0 | |
37 | #define PFM_PMD_LONG_RESET 1 | |
38 | ||
39 | typedef union { | |
40 | unsigned int val; | |
41 | struct { | |
42 | unsigned int notify_user:1; /* notify user program of overflow */ | |
43 | unsigned int reset_ovfl_pmds:1; /* reset overflowed PMDs */ | |
44 | unsigned int block_task:1; /* block monitored task on kernel exit */ | |
45 | unsigned int mask_monitoring:1; /* mask monitors via PMCx.plm */ | |
46 | unsigned int reserved:28; /* for future use */ | |
47 | } bits; | |
48 | } pfm_ovfl_ctrl_t; | |
49 | ||
50 | typedef struct { | |
51 | unsigned char ovfl_pmd; /* index of overflowed PMD */ | |
52 | unsigned char ovfl_notify; /* =1 if monitor requested overflow notification */ | |
53 | unsigned short active_set; /* event set active at the time of the overflow */ | |
54 | pfm_ovfl_ctrl_t ovfl_ctrl; /* return: perfmon controls to set by handler */ | |
55 | ||
56 | unsigned long pmd_last_reset; /* last reset value of of the PMD */ | |
57 | unsigned long smpl_pmds[4]; /* bitmask of other PMD of interest on overflow */ | |
58 | unsigned long smpl_pmds_values[PMU_MAX_PMDS]; /* values for the other PMDs of interest */ | |
59 | unsigned long pmd_value; /* current 64-bit value of the PMD */ | |
60 | unsigned long pmd_eventid; /* eventid associated with PMD */ | |
61 | } pfm_ovfl_arg_t; | |
62 | ||
63 | ||
64 | typedef struct { | |
65 | char *fmt_name; | |
66 | pfm_uuid_t fmt_uuid; | |
67 | size_t fmt_arg_size; | |
68 | unsigned long fmt_flags; | |
69 | ||
70 | int (*fmt_validate)(struct task_struct *task, unsigned int flags, int cpu, void *arg); | |
71 | int (*fmt_getsize)(struct task_struct *task, unsigned int flags, int cpu, void *arg, unsigned long *size); | |
72 | int (*fmt_init)(struct task_struct *task, void *buf, unsigned int flags, int cpu, void *arg); | |
73 | int (*fmt_handler)(struct task_struct *task, void *buf, pfm_ovfl_arg_t *arg, struct pt_regs *regs, unsigned long stamp); | |
74 | int (*fmt_restart)(struct task_struct *task, pfm_ovfl_ctrl_t *ctrl, void *buf, struct pt_regs *regs); | |
75 | int (*fmt_restart_active)(struct task_struct *task, pfm_ovfl_ctrl_t *ctrl, void *buf, struct pt_regs *regs); | |
76 | int (*fmt_exit)(struct task_struct *task, void *buf, struct pt_regs *regs); | |
77 | ||
78 | struct list_head fmt_list; | |
79 | } pfm_buffer_fmt_t; | |
80 | ||
81 | extern int pfm_register_buffer_fmt(pfm_buffer_fmt_t *fmt); | |
82 | extern int pfm_unregister_buffer_fmt(pfm_uuid_t uuid); | |
83 | ||
84 | /* | |
85 | * perfmon interface exported to modules | |
86 | */ | |
87 | extern int pfm_mod_read_pmds(struct task_struct *, void *req, unsigned int nreq, struct pt_regs *regs); | |
88 | extern int pfm_mod_write_pmcs(struct task_struct *, void *req, unsigned int nreq, struct pt_regs *regs); | |
89 | extern int pfm_mod_write_ibrs(struct task_struct *task, void *req, unsigned int nreq, struct pt_regs *regs); | |
90 | extern int pfm_mod_write_dbrs(struct task_struct *task, void *req, unsigned int nreq, struct pt_regs *regs); | |
91 | ||
92 | /* | |
93 | * describe the content of the local_cpu_date->pfm_syst_info field | |
94 | */ | |
95 | #define PFM_CPUINFO_SYST_WIDE 0x1 /* if set a system wide session exists */ | |
96 | #define PFM_CPUINFO_DCR_PP 0x2 /* if set the system wide session has started */ | |
97 | #define PFM_CPUINFO_EXCL_IDLE 0x4 /* the system wide session excludes the idle task */ | |
98 | ||
4944930a SE |
99 | /* |
100 | * sysctl control structure. visible to sampling formats | |
101 | */ | |
102 | typedef struct { | |
103 | int debug; /* turn on/off debugging via syslog */ | |
104 | int debug_ovfl; /* turn on/off debug printk in overflow handler */ | |
105 | int fastctxsw; /* turn on/off fast (unsecure) ctxsw */ | |
106 | int expert_mode; /* turn on/off value checking */ | |
107 | } pfm_sysctl_t; | |
108 | extern pfm_sysctl_t pfm_sysctl; | |
109 | ||
110 | ||
1da177e4 | 111 | #endif /* _ASM_IA64_PERFMON_H */ |