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osnoise uses the tracing_thresh parameter to define the delta between two reads of the time to be considered a noise. Add support to get and set the tracing_thresh from osnoise tools. Link: https://lkml.kernel.org/r/715ad2a53fd40e41bab8c3f1214c1a94e12fb595.1646247211.git.bristot@kernel.org Cc: Daniel Bristot de Oliveira <bristot@kernel.org> Cc: Clark Williams <williams@redhat.com> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "trace.h"
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/*
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* osnoise_context - read, store, write, restore osnoise configs.
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*/
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struct osnoise_context {
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int flags;
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int ref;
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char *curr_cpus;
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char *orig_cpus;
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/* 0 as init value */
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unsigned long long orig_runtime_us;
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unsigned long long runtime_us;
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/* 0 as init value */
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unsigned long long orig_period_us;
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unsigned long long period_us;
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/* 0 as init value */
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long long orig_timerlat_period_us;
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long long timerlat_period_us;
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/* 0 as init value */
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long long orig_tracing_thresh;
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long long tracing_thresh;
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/* -1 as init value because 0 is disabled */
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long long orig_stop_us;
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long long stop_us;
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/* -1 as init value because 0 is disabled */
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long long orig_stop_total_us;
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long long stop_total_us;
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/* -1 as init value because 0 is disabled */
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long long orig_print_stack;
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long long print_stack;
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};
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/*
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* *_INIT_VALs are also invalid values, they are used to
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* communicate errors.
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*/
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#define OSNOISE_OPTION_INIT_VAL (-1)
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#define OSNOISE_TIME_INIT_VAL (0)
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struct osnoise_context *osnoise_context_alloc(void);
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int osnoise_get_context(struct osnoise_context *context);
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void osnoise_put_context(struct osnoise_context *context);
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int osnoise_set_cpus(struct osnoise_context *context, char *cpus);
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void osnoise_restore_cpus(struct osnoise_context *context);
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int osnoise_set_runtime_period(struct osnoise_context *context,
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unsigned long long runtime,
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unsigned long long period);
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void osnoise_restore_runtime_period(struct osnoise_context *context);
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int osnoise_set_stop_us(struct osnoise_context *context,
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long long stop_us);
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void osnoise_restore_stop_us(struct osnoise_context *context);
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int osnoise_set_stop_total_us(struct osnoise_context *context,
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long long stop_total_us);
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void osnoise_restore_stop_total_us(struct osnoise_context *context);
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int osnoise_set_timerlat_period_us(struct osnoise_context *context,
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long long timerlat_period_us);
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void osnoise_restore_timerlat_period_us(struct osnoise_context *context);
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int osnoise_set_tracing_thresh(struct osnoise_context *context,
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long long tracing_thresh);
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void osnoise_restore_tracing_thresh(struct osnoise_context *context);
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void osnoise_restore_print_stack(struct osnoise_context *context);
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int osnoise_set_print_stack(struct osnoise_context *context,
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long long print_stack);
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/*
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* osnoise_tool - osnoise based tool definition.
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*/
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struct osnoise_tool {
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struct trace_instance trace;
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struct osnoise_context *context;
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void *data;
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void *params;
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time_t start_time;
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};
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void osnoise_destroy_tool(struct osnoise_tool *top);
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struct osnoise_tool *osnoise_init_tool(char *tool_name);
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struct osnoise_tool *osnoise_init_trace_tool(char *tracer);
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int osnoise_hist_main(int argc, char *argv[]);
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int osnoise_top_main(int argc, char **argv);
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int osnoise_main(int argc, char **argv);
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