tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2#include "trace.h"
3
4/*
5 * osnoise_context - read, store, write, restore osnoise configs.
6 */
7struct osnoise_context {
8 int flags;
9 int ref;
10
11 char *curr_cpus;
12 char *orig_cpus;
13
14 /* 0 as init value */
15 unsigned long long orig_runtime_us;
16 unsigned long long runtime_us;
17
18 /* 0 as init value */
19 unsigned long long orig_period_us;
20 unsigned long long period_us;
21
22 /* 0 as init value */
23 long long orig_timerlat_period_us;
24 long long timerlat_period_us;
25
26 /* -1 as init value because 0 is disabled */
27 long long orig_stop_us;
28 long long stop_us;
29
30 /* -1 as init value because 0 is disabled */
31 long long orig_stop_total_us;
32 long long stop_total_us;
33
34 /* -1 as init value because 0 is disabled */
35 long long orig_print_stack;
36 long long print_stack;
37};
38
39/*
40 * *_INIT_VALs are also invalid values, they are used to
41 * communicate errors.
42 */
43#define OSNOISE_OPTION_INIT_VAL (-1)
44#define OSNOISE_TIME_INIT_VAL (0)
45
46struct osnoise_context *osnoise_context_alloc(void);
47int osnoise_get_context(struct osnoise_context *context);
48void osnoise_put_context(struct osnoise_context *context);
49
50int osnoise_set_cpus(struct osnoise_context *context, char *cpus);
51void osnoise_restore_cpus(struct osnoise_context *context);
52
53int osnoise_set_runtime_period(struct osnoise_context *context,
54 unsigned long long runtime,
55 unsigned long long period);
56void osnoise_restore_runtime_period(struct osnoise_context *context);
57
58int osnoise_set_stop_us(struct osnoise_context *context,
59 long long stop_us);
60void osnoise_restore_stop_us(struct osnoise_context *context);
61
62int osnoise_set_stop_total_us(struct osnoise_context *context,
63 long long stop_total_us);
64void osnoise_restore_stop_total_us(struct osnoise_context *context);
65
66int osnoise_set_timerlat_period_us(struct osnoise_context *context,
67 long long timerlat_period_us);
68void osnoise_restore_timerlat_period_us(struct osnoise_context *context);
69
70void osnoise_restore_print_stack(struct osnoise_context *context);
71int osnoise_set_print_stack(struct osnoise_context *context,
72 long long print_stack);
73
74/*
75 * osnoise_tool - osnoise based tool definition.
76 */
77struct osnoise_tool {
78 struct trace_instance trace;
79 struct osnoise_context *context;
80 void *data;
81 void *params;
82 time_t start_time;
83};
84
85void osnoise_destroy_tool(struct osnoise_tool *top);
86struct osnoise_tool *osnoise_init_tool(char *tool_name);
87struct osnoise_tool *osnoise_init_trace_tool(char *tracer);
88
89int osnoise_hist_main(int argc, char *argv[]);
90int osnoise_top_main(int argc, char **argv);
91int osnoise_main(int argc, char **argv);