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9212e395c6
Several places in perf need to check whether an evsel is a kprobe or uprobe, which requires looking up the PMU by name via evsel__find_pmu(). This lookup walks the PMU list each time, which is wasteful when the same evsel is checked repeatedly. Add evsel__is_kprobe(), evsel__is_uprobe(), and evsel__is_probe() that resolve the probe type on first call via evsel__pmu_name() and cache the result in a 3-bit field (probe_type) in struct evsel. The field fits in existing padding after the bool fields, so struct size does not grow. The enum uses PROBE__UNKNOWN (0) as the uninitialized sentinel — explicitly set in evsel__init() — so the lookup happens on first use. PROBE__NOPE (1) caches "not a probe" to avoid repeated negative lookups. PMU-based probes (kprobe/uprobe PMU) are detected by PMU name. Ftrace-based dynamic probes (created via tracefs, reported as PMU "tracepoint") are detected by the __probe_ip field that the kernel adds to all dynamic probe formats. This covers kprobes, uprobes, and fprobes regardless of their group/system name. Cc: Aaron Tomlin <atomlin@atomlin.com> Assisted-by: Claude:claude-opus-4.6 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
4667 lines
118 KiB
4667 lines
118 KiB