Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#pragma once
3
4#include "actions.h"
5#include "timerlat_u.h"
6#include "trace.h"
7#include "utils.h"
8
9/*
10 * osnoise_context - read, store, write, restore osnoise configs.
11 */
12struct osnoise_context {
13 int flags;
14 int ref;
15
16 char *curr_cpus;
17 char *orig_cpus;
18
19 /* 0 as init value */
20 unsigned long long orig_runtime_us;
21 unsigned long long runtime_us;
22
23 /* 0 as init value */
24 unsigned long long orig_period_us;
25 unsigned long long period_us;
26
27 /* 0 as init value */
28 long long orig_timerlat_period_us;
29 long long timerlat_period_us;
30
31 /* 0 as init value */
32 long long orig_tracing_thresh;
33 long long tracing_thresh;
34
35 /* -1 as init value because 0 is disabled */
36 long long orig_stop_us;
37 long long stop_us;
38
39 /* -1 as init value because 0 is disabled */
40 long long orig_stop_total_us;
41 long long stop_total_us;
42
43 /* -1 as init value because 0 is disabled */
44 long long orig_print_stack;
45 long long print_stack;
46
47 /* -1 as init value because 0 is off */
48 int orig_opt_irq_disable;
49 int opt_irq_disable;
50
51 /* -1 as init value because 0 is off */
52 int orig_opt_workload;
53 int opt_workload;
54};
55
56extern struct trace_instance *trace_inst;
57extern int stop_tracing;
58
59struct hist_params {
60 char no_irq;
61 char no_thread;
62 char no_header;
63 char no_summary;
64 char no_index;
65 char with_zeros;
66 int bucket_size;
67 int entries;
68};
69
70/*
71 * common_params - Parameters shared between timerlat_params and osnoise_params
72 */
73struct common_params {
74 /* trace configuration */
75 char *cpus;
76 cpu_set_t monitored_cpus;
77 struct trace_events *events;
78 int buffer_size;
79
80 /* Timing parameters */
81 int warmup;
82 long long stop_us;
83 long long stop_total_us;
84 int sleep_time;
85 int duration;
86
87 /* Scheduling parameters */
88 int set_sched;
89 struct sched_attr sched_param;
90 int cgroup;
91 char *cgroup_name;
92 int hk_cpus;
93 cpu_set_t hk_cpu_set;
94
95 /* Other parameters */
96 struct hist_params hist;
97 int output_divisor;
98 int pretty_output;
99 int quiet;
100 int user_workload;
101 int kernel_workload;
102 int user_data;
103 int aa_only;
104
105 struct actions threshold_actions;
106 struct actions end_actions;
107 struct timerlat_u_params user;
108};
109
110#define for_each_monitored_cpu(cpu, nr_cpus, common) \
111 for (cpu = 0; cpu < nr_cpus; cpu++) \
112 if (!(common)->cpus || CPU_ISSET(cpu, &(common)->monitored_cpus))
113
114struct tool_ops;
115
116/*
117 * osnoise_tool - osnoise based tool definition.
118 *
119 * Only the "trace" and "context" fields are used for
120 * the additional trace instances (record and aa).
121 */
122struct osnoise_tool {
123 struct tool_ops *ops;
124 struct trace_instance trace;
125 struct osnoise_context *context;
126 void *data;
127 struct common_params *params;
128 time_t start_time;
129 struct osnoise_tool *record;
130 struct osnoise_tool *aa;
131};
132
133struct tool_ops {
134 const char *tracer;
135 const char *comm_prefix;
136 struct common_params *(*parse_args)(int argc, char *argv[]);
137 struct osnoise_tool *(*init_tool)(struct common_params *params);
138 int (*apply_config)(struct osnoise_tool *tool);
139 int (*enable)(struct osnoise_tool *tool);
140 int (*main)(struct osnoise_tool *tool);
141 void (*print_stats)(struct osnoise_tool *tool);
142 void (*analyze)(struct osnoise_tool *tool, bool stopped);
143 void (*free)(struct osnoise_tool *tool);
144};
145
146int osnoise_set_cpus(struct osnoise_context *context, char *cpus);
147void osnoise_restore_cpus(struct osnoise_context *context);
148
149int osnoise_set_workload(struct osnoise_context *context, bool onoff);
150
151void osnoise_destroy_tool(struct osnoise_tool *top);
152struct osnoise_tool *osnoise_init_tool(char *tool_name);
153struct osnoise_tool *osnoise_init_trace_tool(const char *tracer);
154bool osnoise_trace_is_off(struct osnoise_tool *tool, struct osnoise_tool *record);
155
156int common_apply_config(struct osnoise_tool *tool, struct common_params *params);
157int top_main_loop(struct osnoise_tool *tool);
158int hist_main_loop(struct osnoise_tool *tool);