From 2d31e0bff2f3dd5369a9b45e3d8c9ee325784e60 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Wed, 15 Mar 2023 22:51:01 +0800 Subject: perf kvm: Use macro to replace variable 'decode_str_len' The variable 'decode_str_len' defines the string length for KVM event name and every arch defines its own values. This introduces complexity that the variable definition are spreading in multiple source files under arch folder. This patch refactors code to use a macro KVM_EVENT_NAME_LEN to define event name length and thus remove the definitions in arch files. Signed-off-by: Leo Yan Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230315145112.186603-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/x86/util/kvm-stat.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'tools/perf/arch/x86/util/kvm-stat.c') diff --git a/tools/perf/arch/x86/util/kvm-stat.c b/tools/perf/arch/x86/util/kvm-stat.c index c5dd54f6ef5e..ef513def03ba 100644 --- a/tools/perf/arch/x86/util/kvm-stat.c +++ b/tools/perf/arch/x86/util/kvm-stat.c @@ -18,7 +18,6 @@ static struct kvm_events_ops exit_events = { }; const char *vcpu_id_str = "vcpu_id"; -const int decode_str_len = 20; const char *kvm_exit_reason = "exit_reason"; const char *kvm_entry_trace = "kvm:kvm_entry"; const char *kvm_exit_trace = "kvm:kvm_exit"; @@ -77,7 +76,7 @@ static void mmio_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, struct event_key *key, char *decode) { - scnprintf(decode, decode_str_len, "%#lx:%s", + scnprintf(decode, KVM_EVENT_NAME_LEN, "%#lx:%s", (unsigned long)key->key, key->info == KVM_TRACE_MMIO_WRITE ? "W" : "R"); } @@ -121,7 +120,7 @@ static void ioport_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, struct event_key *key, char *decode) { - scnprintf(decode, decode_str_len, "%#llx:%s", + scnprintf(decode, KVM_EVENT_NAME_LEN, "%#llx:%s", (unsigned long long)key->key, key->info ? "POUT" : "PIN"); } @@ -165,7 +164,7 @@ static void msr_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, struct event_key *key, char *decode) { - scnprintf(decode, decode_str_len, "%#llx:%s", + scnprintf(decode, KVM_EVENT_NAME_LEN, "%#llx:%s", (unsigned long long)key->key, key->info ? "W" : "R"); } -- cgit v1.2.3 From ce1d3bc2733224573600e5564203345caea814eb Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 20 Apr 2023 15:54:11 -0300 Subject: perf evsel: Introduce evsel__name_is() method to check if the evsel name is equal to a given string This makes the logic a bit clear by avoiding the !strcmp() pattern and also a way to intercept the pointer if we need to do extra validation on it or to do lazy setting of evsel->name via evsel__name(evsel). Reviewed-by: "Liang, Kan" Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/lkml/ZEGLM8VehJbS0gP2@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/arm64/util/kvm-stat.c | 4 ++-- tools/perf/arch/powerpc/util/kvm-stat.c | 4 ++-- tools/perf/arch/x86/util/kvm-stat.c | 8 ++++---- tools/perf/builtin-kvm.c | 6 +++--- tools/perf/builtin-stat.c | 2 +- tools/perf/tests/expand-cgroup.c | 2 +- tools/perf/tests/parse-events.c | 12 ++++++------ tools/perf/tests/parse-metric.c | 2 +- tools/perf/tests/pmu-events.c | 2 +- tools/perf/util/evlist.c | 4 ++-- tools/perf/util/evsel.c | 7 ++++++- tools/perf/util/evsel.h | 1 + tools/perf/util/sort.c | 2 +- 13 files changed, 31 insertions(+), 25 deletions(-) (limited to 'tools/perf/arch/x86/util/kvm-stat.c') diff --git a/tools/perf/arch/arm64/util/kvm-stat.c b/tools/perf/arch/arm64/util/kvm-stat.c index 72ca9bb45804..6611aa21cba9 100644 --- a/tools/perf/arch/arm64/util/kvm-stat.c +++ b/tools/perf/arch/arm64/util/kvm-stat.c @@ -44,14 +44,14 @@ static bool event_begin(struct evsel *evsel, struct perf_sample *sample __maybe_unused, struct event_key *key __maybe_unused) { - return !strcmp(evsel->name, kvm_entry_trace); + return evsel__name_is(evsel, kvm_entry_trace); } static bool event_end(struct evsel *evsel, struct perf_sample *sample, struct event_key *key) { - if (!strcmp(evsel->name, kvm_exit_trace)) { + if (evsel__name_is(evsel, kvm_exit_trace)) { event_get_key(evsel, sample, key); return true; } diff --git a/tools/perf/arch/powerpc/util/kvm-stat.c b/tools/perf/arch/powerpc/util/kvm-stat.c index d04a08c9fd19..ea1220d66b67 100644 --- a/tools/perf/arch/powerpc/util/kvm-stat.c +++ b/tools/perf/arch/powerpc/util/kvm-stat.c @@ -60,13 +60,13 @@ static bool hcall_event_end(struct evsel *evsel, struct perf_sample *sample __maybe_unused, struct event_key *key __maybe_unused) { - return (!strcmp(evsel->name, kvm_events_tp[3])); + return (evsel__name_is(evsel, kvm_events_tp[3])); } static bool hcall_event_begin(struct evsel *evsel, struct perf_sample *sample, struct event_key *key) { - if (!strcmp(evsel->name, kvm_events_tp[2])) { + if (evsel__name_is(evsel, kvm_events_tp[2])) { hcall_event_get_key(evsel, sample, key); return true; } diff --git a/tools/perf/arch/x86/util/kvm-stat.c b/tools/perf/arch/x86/util/kvm-stat.c index ef513def03ba..424716518b75 100644 --- a/tools/perf/arch/x86/util/kvm-stat.c +++ b/tools/perf/arch/x86/util/kvm-stat.c @@ -46,7 +46,7 @@ static bool mmio_event_begin(struct evsel *evsel, return true; /* MMIO write begin event in kernel. */ - if (!strcmp(evsel->name, "kvm:kvm_mmio") && + if (evsel__name_is(evsel, "kvm:kvm_mmio") && evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_WRITE) { mmio_event_get_key(evsel, sample, key); return true; @@ -63,7 +63,7 @@ static bool mmio_event_end(struct evsel *evsel, struct perf_sample *sample, return true; /* MMIO read end event in kernel.*/ - if (!strcmp(evsel->name, "kvm:kvm_mmio") && + if (evsel__name_is(evsel, "kvm:kvm_mmio") && evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_READ) { mmio_event_get_key(evsel, sample, key); return true; @@ -101,7 +101,7 @@ static bool ioport_event_begin(struct evsel *evsel, struct perf_sample *sample, struct event_key *key) { - if (!strcmp(evsel->name, "kvm:kvm_pio")) { + if (evsel__name_is(evsel, "kvm:kvm_pio")) { ioport_event_get_key(evsel, sample, key); return true; } @@ -145,7 +145,7 @@ static bool msr_event_begin(struct evsel *evsel, struct perf_sample *sample, struct event_key *key) { - if (!strcmp(evsel->name, "kvm:kvm_msr")) { + if (evsel__name_is(evsel, "kvm:kvm_msr")) { msr_event_get_key(evsel, sample, key); return true; } diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 747d19336340..71165036e4ca 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -625,7 +625,7 @@ void exit_event_get_key(struct evsel *evsel, bool kvm_exit_event(struct evsel *evsel) { - return !strcmp(evsel->name, kvm_exit_trace); + return evsel__name_is(evsel, kvm_exit_trace); } bool exit_event_begin(struct evsel *evsel, @@ -641,7 +641,7 @@ bool exit_event_begin(struct evsel *evsel, bool kvm_entry_event(struct evsel *evsel) { - return !strcmp(evsel->name, kvm_entry_trace); + return evsel__name_is(evsel, kvm_entry_trace); } bool exit_event_end(struct evsel *evsel, @@ -878,7 +878,7 @@ static bool is_child_event(struct perf_kvm_stat *kvm, return false; for (; child_ops->name; child_ops++) { - if (!strcmp(evsel->name, child_ops->name)) { + if (evsel__name_is(evsel, child_ops->name)) { child_ops->get_key(evsel, sample, key); return true; } diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index d3cbee7460fc..efda63f6bf32 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -2170,7 +2170,7 @@ static void setup_system_wide(int forks) evlist__for_each_entry(evsel_list, counter) { if (!counter->core.requires_cpu && - strcmp(counter->name, "duration_time")) { + !evsel__name_is(counter, "duration_time")) { return; } } diff --git a/tools/perf/tests/expand-cgroup.c b/tools/perf/tests/expand-cgroup.c index ec340880a848..9c1a1f18db75 100644 --- a/tools/perf/tests/expand-cgroup.c +++ b/tools/perf/tests/expand-cgroup.c @@ -61,7 +61,7 @@ static int test_expand_events(struct evlist *evlist, i = 0; evlist__for_each_entry(evlist, evsel) { - if (strcmp(evsel->name, ev_name[i % nr_events])) { + if (!evsel__name_is(evsel, ev_name[i % nr_events])) { pr_debug("event name doesn't match:\n"); pr_debug(" evsel[%d]: %s\n expected: %s\n", i, evsel->name, ev_name[i % nr_events]); diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c index 6eb1400443ad..8068cfd89b84 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -1401,7 +1401,7 @@ static int test__checkevent_config_symbol(struct evlist *evlist) { struct evsel *evsel = evlist__first(evlist); - TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "insn") == 0); + TEST_ASSERT_VAL("wrong name setting", evsel__name_is(evsel, "insn")); return TEST_OK; } @@ -1409,7 +1409,7 @@ static int test__checkevent_config_raw(struct evlist *evlist) { struct evsel *evsel = evlist__first(evlist); - TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "rawpmu") == 0); + TEST_ASSERT_VAL("wrong name setting", evsel__name_is(evsel, "rawpmu")); return TEST_OK; } @@ -1417,7 +1417,7 @@ static int test__checkevent_config_num(struct evlist *evlist) { struct evsel *evsel = evlist__first(evlist); - TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "numpmu") == 0); + TEST_ASSERT_VAL("wrong name setting", evsel__name_is(evsel, "numpmu")); return TEST_OK; } @@ -1425,7 +1425,7 @@ static int test__checkevent_config_cache(struct evlist *evlist) { struct evsel *evsel = evlist__first(evlist); - TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "cachepmu") == 0); + TEST_ASSERT_VAL("wrong name setting", evsel__name_is(evsel, "cachepmu")); return TEST_OK; } @@ -1438,7 +1438,7 @@ static int test__intel_pt(struct evlist *evlist) { struct evsel *evsel = evlist__first(evlist); - TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "intel_pt//u") == 0); + TEST_ASSERT_VAL("wrong name setting", evsel__name_is(evsel, "intel_pt//u")); return TEST_OK; } @@ -1446,7 +1446,7 @@ static int test__checkevent_complex_name(struct evlist *evlist) { struct evsel *evsel = evlist__first(evlist); - TEST_ASSERT_VAL("wrong complex name parsing", strcmp(evsel->name, "COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks") == 0); + TEST_ASSERT_VAL("wrong complex name parsing", evsel__name_is(evsel, "COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks")); return TEST_OK; } diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c index c43b056f9fa3..1185b79e6274 100644 --- a/tools/perf/tests/parse-metric.c +++ b/tools/perf/tests/parse-metric.c @@ -39,7 +39,7 @@ static void load_runtime_stat(struct evlist *evlist, struct value *vals) evlist__for_each_entry(evlist, evsel) { count = find_value(evsel->name, vals); evsel->stats->aggr->counts.val = count; - if (!strcmp(evsel->name, "duration_time")) + if (evsel__name_is(evsel, "duration_time")) update_stats(&walltime_nsecs_stats, count); } } diff --git a/tools/perf/tests/pmu-events.c b/tools/perf/tests/pmu-events.c index 7f8e86452527..1dff863b9711 100644 --- a/tools/perf/tests/pmu-events.c +++ b/tools/perf/tests/pmu-events.c @@ -866,7 +866,7 @@ static int test__parsing_callback(const struct pmu_metric *pm, evlist__alloc_aggr_stats(evlist, 1); evlist__for_each_entry(evlist, evsel) { evsel->stats->aggr->counts.val = k; - if (!strcmp(evsel->name, "duration_time")) + if (evsel__name_is(evsel, "duration_time")) update_stats(&walltime_nsecs_stats, k); k++; } diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 2260e27adf44..a0504316b06f 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -467,7 +467,7 @@ static int evsel__strcmp(struct evsel *pos, char *evsel_name) return 0; if (evsel__is_dummy_event(pos)) return 1; - return strcmp(pos->name, evsel_name); + return !evsel__name_is(pos, evsel_name); } static int evlist__is_enabled(struct evlist *evlist) @@ -1706,7 +1706,7 @@ struct evsel *evlist__find_evsel_by_str(struct evlist *evlist, const char *str) evlist__for_each_entry(evlist, evsel) { if (!evsel->name) continue; - if (strcmp(str, evsel->name) == 0) + if (evsel__name_is(evsel, str)) return evsel; } diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index a85a987128aa..356c07f03be6 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -821,6 +821,11 @@ out_unknown: return "unknown"; } +bool evsel__name_is(struct evsel *evsel, const char *name) +{ + return !strcmp(evsel__name(evsel), name); +} + const char *evsel__group_pmu_name(const struct evsel *evsel) { const struct evsel *leader; @@ -1146,7 +1151,7 @@ static void evsel__set_default_freq_period(struct record_opts *opts, static bool evsel__is_offcpu_event(struct evsel *evsel) { - return evsel__is_bpf_output(evsel) && !strcmp(evsel->name, OFFCPU_EVENT); + return evsel__is_bpf_output(evsel) && evsel__name_is(evsel, OFFCPU_EVENT); } /* diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 68072ec655ce..1e5d640e4a9b 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -282,6 +282,7 @@ int arch_evsel__hw_name(struct evsel *evsel, char *bf, size_t size); int __evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, char *bf, size_t size); const char *evsel__name(struct evsel *evsel); +bool evsel__name_is(struct evsel *evsel, const char *name); const char *evsel__group_pmu_name(const struct evsel *evsel); const char *evsel__metric_id(const struct evsel *evsel); diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 31b1cd0935e2..650cd8df4041 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -2893,7 +2893,7 @@ static struct evsel *find_evsel(struct evlist *evlist, char *event_name) full_name = !!strchr(event_name, ':'); evlist__for_each_entry(evlist, pos) { /* case 2 */ - if (full_name && !strcmp(pos->name, event_name)) + if (full_name && evsel__name_is(pos, event_name)) return pos; /* case 3 */ if (!full_name && strstr(pos->name, event_name)) { -- cgit v1.2.3