perf data: Allow filtering conversion by time range

This adds a feature to allow restricting the range of converted samples
with a range string like perf-script and perf-report --time.

Committer testing:

Put a probe on the ICMP receive path handling broadcast packets:

  # perf probe icmp_rcv:64
  Added new event:
    probe:icmp_rcv_L64   (on icmp_rcv:64)

  You can now use it in all perf tools, such as:

  	perf record -e probe:icmp_rcv_L64 -aR sleep 1

  # perf record -e probe:icmp_rcv_L64 ping -c 10 -b 127.255.255.255
  WARNING: pinging broadcast address
  PING 127.255.255.255 (127.255.255.255) 56(84) bytes of data.
  ^C
  --- 127.255.255.255 ping statistics ---
  10 packets transmitted, 0 received, 100% packet loss, time 9217ms

  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.034 MB perf.data (10 samples) ]

  # perf script
              ping   52785 [009]  5847.300394: probe:icmp_rcv_L64: (ffffffffaadb337e)
              ping   52785 [009]  5848.325018: probe:icmp_rcv_L64: (ffffffffaadb337e)
              ping   52785 [009]  5849.349007: probe:icmp_rcv_L64: (ffffffffaadb337e)
              ping   52785 [009]  5850.372979: probe:icmp_rcv_L64: (ffffffffaadb337e)
              ping   52785 [009]  5851.396988: probe:icmp_rcv_L64: (ffffffffaadb337e)
              ping   52785 [009]  5852.420954: probe:icmp_rcv_L64: (ffffffffaadb337e)
              ping   52785 [009]  5853.444934: probe:icmp_rcv_L64: (ffffffffaadb337e)
              ping   52785 [009]  5854.468926: probe:icmp_rcv_L64: (ffffffffaadb337e)
              ping   52785 [009]  5855.492914: probe:icmp_rcv_L64: (ffffffffaadb337e)
              ping   52785 [009]  5856.516883: probe:icmp_rcv_L64: (ffffffffaadb337e)
  #

Now get some slices using perf script:

  # perf script --time 40%
            ping   52785 [009]  5847.300394: probe:icmp_rcv_L64: (ffffffffaadb337e)
            ping   52785 [009]  5848.325018: probe:icmp_rcv_L64: (ffffffffaadb337e)
            ping   52785 [009]  5849.349007: probe:icmp_rcv_L64: (ffffffffaadb337e)
            ping   52785 [009]  5850.372979: probe:icmp_rcv_L64: (ffffffffaadb337e)
  # perf script --time 40%-60%
            ping   52785 [009]  5851.396988: probe:icmp_rcv_L64: (ffffffffaadb337e)
            ping   52785 [009]  5852.420954: probe:icmp_rcv_L64: (ffffffffaadb337e)
  #

And finally use this new feature:

  # perf data convert --to-json out.json --time 0%-10%
  [ perf data convert: Converted 'perf.data' into JSON data 'out.json' ]
  [ perf data convert: Converted and wrote 0.001 MB (1 samples) ]
  [ perf data convert: Skipped 9 samples ]
  # cat out.json
  {
  	"linux-perf-json-version": 1,
  	"headers": {
  		"header-version": 1,
  		"captured-on": "2026-01-06T22:26:40Z",
  		"data-offset": 520,
  		"data-size": 34648,
  		"feat-offset": 35168,
  		"hostname": "number",
  		"os-release": "6.17.12-300.fc43.x86_64",
  		"arch": "x86_64",
  		"cpu-desc": "AMD Ryzen 9 9950X3D 16-Core Processor",
  		"cpuid": "AuthenticAMD,26,68,0",
  		"nrcpus-online": 32,
  		"nrcpus-avail": 32,
  		"perf-version": "6.19.rc4.gf4c270685d3d",
  		"cmdline": [
  			"/home/acme/bin/perf"
  		]
  	},
  	"samples": [
  		{
  			"timestamp": 5847300394661,
  			"pid": 52785,
  			"tid": 52785,
  			"cpu": 9,
  			"comm": "ping",
  			"callchain": [
  				{
  					"ip": "0xffffffffaadb337f",
  					"symbol": "icmp_rcv",
  					"dso": "[kernel.kallsyms]"
  				}
  			],
  			"__probe_ip": "ffffffffaadb337e"
  		}
  	]
  }
  #

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

0 files changed, 0 insertions, 0 deletions