1 // SPDX-License-Identifier: GPL-2.0
2 #include "trace.h"
3 
4 /*
5  * osnoise_context - read, store, write, restore osnoise configs.
6  */
7 struct 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 	/* 0 as init value */
27 	long long		orig_tracing_thresh;
28 	long long		tracing_thresh;
29 
30 	/* -1 as init value because 0 is disabled */
31 	long long		orig_stop_us;
32 	long long		stop_us;
33 
34 	/* -1 as init value because 0 is disabled */
35 	long long		orig_stop_total_us;
36 	long long		stop_total_us;
37 
38 	/* -1 as init value because 0 is disabled */
39 	long long		orig_print_stack;
40 	long long		print_stack;
41 };
42 
43 /*
44  * *_INIT_VALs are also invalid values, they are used to
45  * communicate errors.
46  */
47 #define OSNOISE_OPTION_INIT_VAL	(-1)
48 #define OSNOISE_TIME_INIT_VAL	(0)
49 
50 struct osnoise_context *osnoise_context_alloc(void);
51 int osnoise_get_context(struct osnoise_context *context);
52 void osnoise_put_context(struct osnoise_context *context);
53 
54 int osnoise_set_cpus(struct osnoise_context *context, char *cpus);
55 void osnoise_restore_cpus(struct osnoise_context *context);
56 
57 int osnoise_set_runtime_period(struct osnoise_context *context,
58 			       unsigned long long runtime,
59 			       unsigned long long period);
60 void osnoise_restore_runtime_period(struct osnoise_context *context);
61 
62 int osnoise_set_stop_us(struct osnoise_context *context,
63 			long long stop_us);
64 void osnoise_restore_stop_us(struct osnoise_context *context);
65 
66 int osnoise_set_stop_total_us(struct osnoise_context *context,
67 			      long long stop_total_us);
68 void osnoise_restore_stop_total_us(struct osnoise_context *context);
69 
70 int osnoise_set_timerlat_period_us(struct osnoise_context *context,
71 				   long long timerlat_period_us);
72 void osnoise_restore_timerlat_period_us(struct osnoise_context *context);
73 
74 int osnoise_set_tracing_thresh(struct osnoise_context *context,
75 			       long long tracing_thresh);
76 void osnoise_restore_tracing_thresh(struct osnoise_context *context);
77 
78 void osnoise_restore_print_stack(struct osnoise_context *context);
79 int osnoise_set_print_stack(struct osnoise_context *context,
80 			    long long print_stack);
81 
82 /*
83  * osnoise_tool -  osnoise based tool definition.
84  */
85 struct osnoise_tool {
86 	struct trace_instance		trace;
87 	struct osnoise_context		*context;
88 	void				*data;
89 	void				*params;
90 	time_t				start_time;
91 };
92 
93 void osnoise_destroy_tool(struct osnoise_tool *top);
94 struct osnoise_tool *osnoise_init_tool(char *tool_name);
95 struct osnoise_tool *osnoise_init_trace_tool(char *tracer);
96 
97 int osnoise_hist_main(int argc, char *argv[]);
98 int osnoise_top_main(int argc, char **argv);
99 int osnoise_main(int argc, char **argv);
100