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13a70f3506
Current perf report/script/... have a --time option to limit the time
range of output. But right now it only supports absolute time, add
support for time percentage.
For example:
1. Select the second 10% time slice
perf report --time 10%/2
2. Select from 0% to 10% time slice
perf report --time 0%-10%
It also support the multiple time ranges.
3. Select the first and second 10% time slices
perf report --time 10%/1,10%/2
4. Select from 0% to 10% and 30% to 40% slices
perf report --time 0%-10%,30%-40%
Changelog:
v4: An issue is found. Following passes.
perf script --time 10%/10x12321xsdfdasfdsafdsafdsa
Now it uses strtol to replace atoi.
Committer notes:
This just puts in place the infrastructure, so the examples in this cset
comment will only work later, after more patches in this series are
applied.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512738826-2628-4-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
26 lines
643 B
C
26 lines
643 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _TIME_UTILS_H_
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#define _TIME_UTILS_H_
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#include <stddef.h>
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#include <linux/types.h>
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struct perf_time_interval {
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u64 start, end;
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};
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int parse_nsec_time(const char *str, u64 *ptime);
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int perf_time__parse_str(struct perf_time_interval *ptime, const char *ostr);
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int perf_time__percent_parse_str(struct perf_time_interval *ptime_buf, int num,
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const char *ostr, u64 start, u64 end);
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bool perf_time__skip_sample(struct perf_time_interval *ptime, u64 timestamp);
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int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz);
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int fetch_current_timestamp(char *buf, size_t sz);
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#endif
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