726721a518
With the addition of the in-kernel synthetic event API, synthetic events are no longer specifically tied to the histogram triggers. The synthetic event code is also making trace_event_hist.c very bloated, so for those reasons, move it to a separate file, trace_events_synth.c, along with a new trace_synth.h header file. Because synthetic events are now independent from hist triggers, add a new CONFIG_SYNTH_EVENTS config option, and have CONFIG_HIST_TRIGGERS select it, and have CONFIG_SYNTH_EVENT_GEN_TEST depend on it. Link: http://lkml.kernel.org/r/4d1fa1f85ed5982706ac44844ac92451dcb04715.1590693308.git.zanussi@kernel.org Signed-off-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
37 lines
742 B
C
37 lines
742 B
C
// SPDX-License-Identifier: GPL-2.0
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#ifndef __TRACE_SYNTH_H
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#define __TRACE_SYNTH_H
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#include "trace_dynevent.h"
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#define SYNTH_SYSTEM "synthetic"
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#define SYNTH_FIELDS_MAX 32
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#define STR_VAR_LEN_MAX 32 /* must be multiple of sizeof(u64) */
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struct synth_field {
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char *type;
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char *name;
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size_t size;
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unsigned int offset;
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bool is_signed;
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bool is_string;
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};
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struct synth_event {
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struct dyn_event devent;
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int ref;
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char *name;
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struct synth_field **fields;
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unsigned int n_fields;
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unsigned int n_u64;
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struct trace_event_class class;
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struct trace_event_call call;
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struct tracepoint *tp;
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struct module *mod;
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};
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extern struct synth_event *find_synth_event(const char *name);
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#endif /* __TRACE_SYNTH_H */
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