mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-29 13:23:23 +01:00
Steven Rostedt (Google)
b7b037eb5f
In order to testing filtering and histograms via the trace event benchmark, record the delta time of the last event as a numeric value (currently, it just saves it within the string) so that filters and histograms can use it. Link: https://lkml.kernel.org/r/[email protected] Cc: Ingo Molnar <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Tom Zanussi <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]>
45 lines
965 B
C
45 lines
965 B
C
// SPDX-License-Identifier: GPL-2.0
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM benchmark
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#if !defined(_TRACE_BENCHMARK_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_BENCHMARK_H
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#include <linux/tracepoint.h>
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extern int trace_benchmark_reg(void);
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extern void trace_benchmark_unreg(void);
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#define BENCHMARK_EVENT_STRLEN 128
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TRACE_EVENT_FN(benchmark_event,
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TP_PROTO(const char *str, u64 delta),
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TP_ARGS(str, delta),
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TP_STRUCT__entry(
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__array( char, str, BENCHMARK_EVENT_STRLEN )
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__field( u64, delta)
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),
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TP_fast_assign(
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memcpy(__entry->str, str, BENCHMARK_EVENT_STRLEN);
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__entry->delta = delta;
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),
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TP_printk("%s delta=%llu", __entry->str, __entry->delta),
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trace_benchmark_reg, trace_benchmark_unreg
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);
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#endif /* _TRACE_BENCHMARK_H */
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#undef TRACE_INCLUDE_FILE
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#define TRACE_INCLUDE_FILE trace_benchmark
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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