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 "actions.h"
3#include "osnoise.h"
4
5/*
6 * Define timerlat tracing mode.
7 *
8 * There are three tracing modes:
9 * - tracefs-only, used when BPF is unavailable.
10 * - BPF-only, used when BPF is available and neither trace saving nor
11 * auto-analysis are enabled.
12 * - mixed mode, used when BPF is available and either trace saving or
13 * auto-analysis is enabled (which rely on sample collection through
14 * tracefs).
15 */
16enum timerlat_tracing_mode {
17 TRACING_MODE_BPF,
18 TRACING_MODE_TRACEFS,
19 TRACING_MODE_MIXED,
20};
21
22struct timerlat_params {
23 /* Common params */
24 char *cpus;
25 cpu_set_t monitored_cpus;
26 char *cgroup_name;
27 unsigned long long runtime;
28 long long stop_us;
29 long long stop_total_us;
30 long long timerlat_period_us;
31 long long print_stack;
32 int sleep_time;
33 int output_divisor;
34 int duration;
35 int set_sched;
36 int dma_latency;
37 int no_aa;
38 int dump_tasks;
39 int cgroup;
40 int hk_cpus;
41 int user_workload;
42 int kernel_workload;
43 int user_data;
44 int warmup;
45 int buffer_size;
46 int deepest_idle_state;
47 cpu_set_t hk_cpu_set;
48 struct sched_attr sched_param;
49 struct trace_events *events;
50 enum timerlat_tracing_mode mode;
51
52 struct actions threshold_actions;
53 struct actions end_actions;
54
55 union {
56 struct {
57 /* top only */
58 int quiet;
59 int aa_only;
60 int pretty_output;
61 };
62 struct {
63 /* hist only */
64 char no_irq;
65 char no_thread;
66 char no_header;
67 char no_summary;
68 char no_index;
69 char with_zeros;
70 int bucket_size;
71 int entries;
72 };
73 };
74};
75
76int timerlat_apply_config(struct osnoise_tool *tool, struct timerlat_params *params);
77
78int timerlat_hist_main(int argc, char *argv[]);
79int timerlat_top_main(int argc, char *argv[]);
80int timerlat_main(int argc, char *argv[]);