28d2160cb1
With the addition of --trigger option, it is also possible to stop the trace from the -t tracing instance using the traceoff trigger. Make rtla tools to check if the trace is stopped also in the trace instance, stopping the execution of the tool. Link: https://lkml.kernel.org/r/59fc7c6f23dddd5c8b7ef1782cf3da51ea2ce0f5.1646247211.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>
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <tracefs.h>
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#include <stddef.h>
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struct trace_events {
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struct trace_events *next;
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char *system;
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char *event;
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char *filter;
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char *trigger;
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char enabled;
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char filter_enabled;
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char trigger_enabled;
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};
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struct trace_instance {
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struct tracefs_instance *inst;
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struct tep_handle *tep;
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struct trace_seq *seq;
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};
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int trace_instance_init(struct trace_instance *trace, char *tool_name);
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int trace_instance_start(struct trace_instance *trace);
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void trace_instance_destroy(struct trace_instance *trace);
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struct trace_seq *get_trace_seq(void);
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int enable_tracer_by_name(struct tracefs_instance *inst, const char *tracer_name);
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void disable_tracer(struct tracefs_instance *inst);
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int enable_osnoise(struct trace_instance *trace);
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int enable_timerlat(struct trace_instance *trace);
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struct tracefs_instance *create_instance(char *instance_name);
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void destroy_instance(struct tracefs_instance *inst);
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int save_trace_to_file(struct tracefs_instance *inst, const char *filename);
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int collect_registered_events(struct tep_event *tep, struct tep_record *record,
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int cpu, void *context);
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struct trace_events *trace_event_alloc(const char *event_string);
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void trace_events_disable(struct trace_instance *instance,
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struct trace_events *events);
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void trace_events_destroy(struct trace_instance *instance,
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struct trace_events *events);
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int trace_events_enable(struct trace_instance *instance,
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struct trace_events *events);
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int trace_event_add_filter(struct trace_events *event, char *filter);
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int trace_event_add_trigger(struct trace_events *event, char *trigger);
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int trace_is_off(struct trace_instance *tool, struct trace_instance *trace);
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