diff options
37 files changed, 265 insertions, 227 deletions
diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c index f5aafdec7f50..c25bc1528b96 100644 --- a/tools/perf/arch/arm/util/cs-etm.c +++ b/tools/perf/arch/arm/util/cs-etm.c @@ -156,7 +156,7 @@ static int cs_etm_set_option(struct auxtrace_record *itr, { int i, err = -EINVAL; struct perf_cpu_map *event_cpus = evsel->evlist->cpus; - struct perf_cpu_map *online_cpus = cpu_map__new(NULL); + struct perf_cpu_map *online_cpus = perf_cpu_map__new(NULL); /* Set option of each CPU we have */ for (i = 0; i < cpu__max_cpu(); i++) { @@ -490,7 +490,7 @@ cs_etm_info_priv_size(struct auxtrace_record *itr __maybe_unused, int i; int etmv3 = 0, etmv4 = 0; struct perf_cpu_map *event_cpus = evlist->cpus; - struct perf_cpu_map *online_cpus = cpu_map__new(NULL); + struct perf_cpu_map *online_cpus = perf_cpu_map__new(NULL); /* cpu map is not empty, we have specific CPUs to work with */ if (!cpu_map__empty(event_cpus)) { @@ -637,7 +637,7 @@ static int cs_etm_info_fill(struct auxtrace_record *itr, u64 nr_cpu, type; struct perf_cpu_map *cpu_map; struct perf_cpu_map *event_cpus = session->evlist->cpus; - struct perf_cpu_map *online_cpus = cpu_map__new(NULL); + struct perf_cpu_map *online_cpus = perf_cpu_map__new(NULL); struct cs_etm_recording *ptr = container_of(itr, struct cs_etm_recording, itr); struct perf_pmu *cs_etm_pmu = ptr->cs_etm_pmu; diff --git a/tools/perf/arch/x86/tests/perf-time-to-tsc.c b/tools/perf/arch/x86/tests/perf-time-to-tsc.c index 07129e007eb0..261bdd680651 100644 --- a/tools/perf/arch/x86/tests/perf-time-to-tsc.c +++ b/tools/perf/arch/x86/tests/perf-time-to-tsc.c @@ -5,6 +5,7 @@ #include <unistd.h> #include <linux/types.h> #include <sys/prctl.h> +#include <perf/cpumap.h> #include "parse-events.h" #include "evlist.h" @@ -65,7 +66,7 @@ int test__perf_time_to_tsc(struct test *test __maybe_unused, int subtest __maybe threads = thread_map__new(-1, getpid(), UINT_MAX); CHECK_NOT_NULL__(threads); - cpus = cpu_map__new(NULL); + cpus = perf_cpu_map__new(NULL); CHECK_NOT_NULL__(cpus); evlist = evlist__new(); diff --git a/tools/perf/bench/epoll-ctl.c b/tools/perf/bench/epoll-ctl.c index 1fd724f1d48b..84658d45f349 100644 --- a/tools/perf/bench/epoll-ctl.c +++ b/tools/perf/bench/epoll-ctl.c @@ -20,6 +20,7 @@ #include <sys/resource.h> #include <sys/epoll.h> #include <sys/eventfd.h> +#include <perf/cpumap.h> #include "../util/stat.h" #include <subcmd/parse-options.h> @@ -315,7 +316,7 @@ int bench_epoll_ctl(int argc, const char **argv) act.sa_sigaction = toggle_done; sigaction(SIGINT, &act, NULL); - cpu = cpu_map__new(NULL); + cpu = perf_cpu_map__new(NULL); if (!cpu) goto errmem; diff --git a/tools/perf/bench/epoll-wait.c b/tools/perf/bench/epoll-wait.c index 79a254fff2d1..c27a65639cfb 100644 --- a/tools/perf/bench/epoll-wait.c +++ b/tools/perf/bench/epoll-wait.c @@ -75,6 +75,7 @@ #include <sys/epoll.h> #include <sys/eventfd.h> #include <sys/types.h> +#include <perf/cpumap.h> #include "../util/stat.h" #include <subcmd/parse-options.h> @@ -429,7 +430,7 @@ int bench_epoll_wait(int argc, const char **argv) act.sa_sigaction = toggle_done; sigaction(SIGINT, &act, NULL); - cpu = cpu_map__new(NULL); + cpu = perf_cpu_map__new(NULL); if (!cpu) goto errmem; diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c index b4fea8e3a368..80e138904c66 100644 --- a/tools/perf/bench/futex-hash.c +++ b/tools/perf/bench/futex-hash.c @@ -20,6 +20,7 @@ #include <linux/kernel.h> #include <linux/zalloc.h> #include <sys/time.h> +#include <perf/cpumap.h> #include "../util/stat.h" #include <subcmd/parse-options.h> @@ -132,7 +133,7 @@ int bench_futex_hash(int argc, const char **argv) exit(EXIT_FAILURE); } - cpu = cpu_map__new(NULL); + cpu = perf_cpu_map__new(NULL); if (!cpu) goto errmem; diff --git a/tools/perf/bench/futex-lock-pi.c b/tools/perf/bench/futex-lock-pi.c index 596769924709..c5d6d0abbaa9 100644 --- a/tools/perf/bench/futex-lock-pi.c +++ b/tools/perf/bench/futex-lock-pi.c @@ -14,6 +14,7 @@ #include <linux/kernel.h> #include <linux/zalloc.h> #include <errno.h> +#include <perf/cpumap.h> #include "bench.h" #include "futex.h" #include "cpumap.h" @@ -156,7 +157,7 @@ int bench_futex_lock_pi(int argc, const char **argv) if (argc) goto err; - cpu = cpu_map__new(NULL); + cpu = perf_cpu_map__new(NULL); if (!cpu) err(EXIT_FAILURE, "calloc"); diff --git a/tools/perf/bench/futex-requeue.c b/tools/perf/bench/futex-requeue.c index 1fd32a4f9c14..75d3418c1a88 100644 --- a/tools/perf/bench/futex-requeue.c +++ b/tools/perf/bench/futex-requeue.c @@ -20,6 +20,7 @@ #include <linux/kernel.h> #include <linux/time64.h> #include <errno.h> +#include <perf/cpumap.h> #include "bench.h" #include "futex.h" #include "cpumap.h" @@ -123,7 +124,7 @@ int bench_futex_requeue(int argc, const char **argv) if (argc) goto err; - cpu = cpu_map__new(NULL); + cpu = perf_cpu_map__new(NULL); if (!cpu) err(EXIT_FAILURE, "cpu_map__new"); diff --git a/tools/perf/bench/futex-wake-parallel.c b/tools/perf/bench/futex-wake-parallel.c index 884c73e5bd1b..163fe16c275a 100644 --- a/tools/perf/bench/futex-wake-parallel.c +++ b/tools/perf/bench/futex-wake-parallel.c @@ -237,7 +237,7 @@ int bench_futex_wake_parallel(int argc, const char **argv) act.sa_sigaction = toggle_done; sigaction(SIGINT, &act, NULL); - cpu = cpu_map__new(NULL); + cpu = perf_cpu_map__new(NULL); if (!cpu) err(EXIT_FAILURE, "calloc"); diff --git a/tools/perf/bench/futex-wake.c b/tools/perf/bench/futex-wake.c index 2288fa8412ff..77dcdc13618a 100644 --- a/tools/perf/bench/futex-wake.c +++ b/tools/perf/bench/futex-wake.c @@ -20,6 +20,7 @@ #include <linux/kernel.h> #include <linux/time64.h> #include <errno.h> +#include <perf/cpumap.h> #include "bench.h" #include "futex.h" #include "cpumap.h" @@ -131,7 +132,7 @@ int bench_futex_wake(int argc, const char **argv) exit(EXIT_FAILURE); } - cpu = cpu_map__new(NULL); + cpu = perf_cpu_map__new(NULL); if (!cpu) err(EXIT_FAILURE, "calloc"); diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 6943352b8d94..77989254fdd8 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -202,7 +202,7 @@ static int set_tracing_cpu(struct perf_ftrace *ftrace) static int reset_tracing_cpu(void) { - struct perf_cpu_map *cpumap = cpu_map__new(NULL); + struct perf_cpu_map *cpumap = perf_cpu_map__new(NULL); int ret; ret = set_tracing_cpumask(cpumap); diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 897d11c8ca2e..0d6b4c3b1a51 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -3183,7 +3183,7 @@ static int setup_map_cpus(struct perf_sched *sched) if (!sched->map.cpus_str) return 0; - map = cpu_map__new(sched->map.cpus_str); + map = perf_cpu_map__new(sched->map.cpus_str); if (!map) { pr_err("failed to get cpus map from %s\n", sched->map.cpus_str); return -1; @@ -3217,7 +3217,7 @@ static int setup_color_cpus(struct perf_sched *sched) if (!sched->map.color_cpus_str) return 0; - map = cpu_map__new(sched->map.color_cpus_str); + map = perf_cpu_map__new(sched->map.color_cpus_str); if (!map) { pr_err("failed to get thread map from %s\n", sched->map.color_cpus_str); return -1; diff --git a/tools/perf/lib/cpumap.c b/tools/perf/lib/cpumap.c index f3cfb4c71106..a5d4f7ff7174 100644 --- a/tools/perf/lib/cpumap.c +++ b/tools/perf/lib/cpumap.c @@ -5,6 +5,10 @@ #include <internal/cpumap.h> #include <asm/bug.h> #include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <ctype.h> +#include <limits.h> struct perf_cpu_map *perf_cpu_map__dummy_new(void) { @@ -40,3 +44,183 @@ void perf_cpu_map__put(struct perf_cpu_map *map) if (map && refcount_dec_and_test(&map->refcnt)) cpu_map__delete(map); } + +static struct perf_cpu_map *cpu_map__default_new(void) +{ + struct perf_cpu_map *cpus; + int nr_cpus; + + nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); + if (nr_cpus < 0) + return NULL; + + cpus = malloc(sizeof(*cpus) + nr_cpus * sizeof(int)); + if (cpus != NULL) { + int i; + + for (i = 0; i < nr_cpus; ++i) + cpus->map[i] = i; + + cpus->nr = nr_cpus; + refcount_set(&cpus->refcnt, 1); + } + + return cpus; +} + +static struct perf_cpu_map *cpu_map__trim_new(int nr_cpus, int *tmp_cpus) +{ + size_t payload_size = nr_cpus * sizeof(int); + struct perf_cpu_map *cpus = malloc(sizeof(*cpus) + payload_size); + + if (cpus != NULL) { + cpus->nr = nr_cpus; + memcpy(cpus->map, tmp_cpus, payload_size); + refcount_set(&cpus->refcnt, 1); + } + + return cpus; +} + +struct perf_cpu_map *perf_cpu_map__read(FILE *file) +{ + struct perf_cpu_map *cpus = NULL; + int nr_cpus = 0; + int *tmp_cpus = NULL, *tmp; + int max_entries = 0; + int n, cpu, prev; + char sep; + + sep = 0; + prev = -1; + for (;;) { + n = fscanf(file, "%u%c", &cpu, &sep); + if (n <= 0) + break; + if (prev >= 0) { + int new_max = nr_cpus + cpu - prev - 1; + + if (new_max >= max_entries) { + max_entries = new_max + MAX_NR_CPUS / 2; + tmp = realloc(tmp_cpus, max_entries * sizeof(int)); + if (tmp == NULL) + goto out_free_tmp; + tmp_cpus = tmp; + } + + while (++prev < cpu) + tmp_cpus[nr_cpus++] = prev; + } + if (nr_cpus == max_entries) { + max_entries += MAX_NR_CPUS; + tmp = realloc(tmp_cpus, max_entries * sizeof(int)); + if (tmp == NULL) + goto out_free_tmp; + tmp_cpus = tmp; + } + + tmp_cpus[nr_cpus++] = cpu; + if (n == 2 && sep == '-') + prev = cpu; + else + prev = -1; + if (n == 1 || sep == '\n') + break; + } + + if (nr_cpus > 0) + cpus = cpu_map__trim_new(nr_cpus, tmp_cpus); + else + cpus = cpu_map__default_new(); +out_free_tmp: + free(tmp_cpus); + return cpus; +} + +static struct perf_cpu_map *cpu_map__read_all_cpu_map(void) +{ + struct perf_cpu_map *cpus = NULL; + FILE *onlnf; + + onlnf = fopen("/sys/devices/system/cpu/online", "r"); + if (!onlnf) + return cpu_map__default_new(); + + cpus = perf_cpu_map__read(onlnf); + fclose(onlnf); + return cpus; +} + +struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list) +{ + struct perf_cpu_map *cpus = NULL; + unsigned long start_cpu, end_cpu = 0; + char *p = NULL; + int i, nr_cpus = 0; + int *tmp_cpus = NULL, *tmp; + int max_entries = 0; + + if (!cpu_list) + return cpu_map__read_all_cpu_map(); + + /* + * must handle the case of empty cpumap to cover + * TOPOLOGY header for NUMA nodes with no CPU + * ( e.g., because of CPU hotplug) + */ + if (!isdigit(*cpu_list) && *cpu_list != '\0') + goto out; + + while (isdigit(*cpu_list)) { + p = NULL; + start_cpu = strtoul(cpu_list, &p, 0); + if (start_cpu >= INT_MAX + || (*p != '\0' && *p != ',' && *p != '-')) + goto invalid; + + if (*p == '-') { + cpu_list = ++p; + p = NULL; + end_cpu = strtoul(cpu_list, &p, 0); + + if (end_cpu >= INT_MAX || (*p != '\0' && *p != ',')) + goto invalid; + + if (end_cpu < start_cpu) + goto invalid; + } else { + end_cpu = start_cpu; + } + + for (; start_cpu <= end_cpu; start_cpu++) { + /* check for duplicates */ + for (i = 0; i < nr_cpus; i++) + if (tmp_cpus[i] == (int)start_cpu) + goto invalid; + + if (nr_cpus == max_entries) { + max_entries += MAX_NR_CPUS; + tmp = realloc(tmp_cpus, max_entries * sizeof(int)); + if (tmp == NULL) + goto invalid; + tmp_cpus = tmp; + } + tmp_cpus[nr_cpus++] = (int)start_cpu; + } + if (*p) + ++p; + + cpu_list = p; + } + + if (nr_cpus > 0) + cpus = cpu_map__trim_new(nr_cpus, tmp_cpus); + else if (*cpu_list != '\0') + cpus = cpu_map__default_new(); + else + cpus = perf_cpu_map__dummy_new(); +invalid: + free(tmp_cpus); +out: + return cpus; +} diff --git a/tools/perf/lib/include/internal/cpumap.h b/tools/perf/lib/include/internal/cpumap.h index 53ce95374b05..3306319f7df8 100644 --- a/tools/perf/lib/include/internal/cpumap.h +++ b/tools/perf/lib/include/internal/cpumap.h @@ -10,4 +10,8 @@ struct perf_cpu_map { int map[]; }; +#ifndef MAX_NR_CPUS +#define MAX_NR_CPUS 2048 +#endif + #endif /* __LIBPERF_INTERNAL_CPUMAP_H */ diff --git a/tools/perf/lib/include/perf/cpumap.h b/tools/perf/lib/include/perf/cpumap.h index e16c2515a499..b4a9283a5dfa 100644 --- a/tools/perf/lib/include/perf/cpumap.h +++ b/tools/perf/lib/include/perf/cpumap.h @@ -3,10 +3,13 @@ #define __LIBPERF_CPUMAP_H #include <perf/core.h> +#include <stdio.h> struct perf_cpu_map; LIBPERF_API struct perf_cpu_map *perf_cpu_map__dummy_new(void); +LIBPERF_API struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list); +LIBPERF_API struct perf_cpu_map *perf_cpu_map__read(FILE *file); LIBPERF_API struct perf_cpu_map *perf_cpu_map__get(struct perf_cpu_map *map); LIBPERF_API void perf_cpu_map__put(struct perf_cpu_map *map); diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map index 168339f89a2e..e38473a8f32f 100644 --- a/tools/perf/lib/libperf.map +++ b/tools/perf/lib/libperf.map @@ -4,6 +4,8 @@ LIBPERF_0.0.1 { perf_cpu_map__dummy_new; perf_cpu_map__get; perf_cpu_map__put; + perf_cpu_map__new; + perf_cpu_map__read; perf_thread_map__new_dummy; perf_thread_map__set_pid; perf_thread_map__comm; diff --git a/tools/perf/tests/bitmap.c b/tools/perf/tests/bitmap.c index 95304d29092e..db2aadff3708 100644 --- a/tools/perf/tests/bitmap.c +++ b/tools/perf/tests/bitmap.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 #include <linux/compiler.h> #include <linux/bitmap.h> +#include <perf/cpumap.h> #include "tests.h" #include "cpumap.h" #include "debug.h" @@ -9,7 +10,7 @@ static unsigned long *get_bitmap(const char *str, int nbits) { - struct perf_cpu_map *map = cpu_map__new(str); + struct perf_cpu_map *map = perf_cpu_map__new(str); unsigned long *bm = NULL; int i; diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c index 131bbeec62d2..bfaf22c2023c 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -8,6 +8,7 @@ #include <stdio.h> #include <string.h> #include <sys/param.h> +#include <perf/cpumap.h> #include "parse-events.h" #include "evlist.h" @@ -613,9 +614,9 @@ static int do_test_code_reading(bool try_kcore) goto out_put; } - cpus = cpu_map__new(NULL); + cpus = perf_cpu_map__new(NULL); if (!cpus) { - pr_debug("cpu_map__new failed\n"); + pr_debug("perf_cpu_map__new failed\n"); goto out_put; } diff --git a/tools/perf/tests/cpumap.c b/tools/perf/tests/cpumap.c index 6c921087b0fe..b71fe09a8087 100644 --- a/tools/perf/tests/cpumap.c +++ b/tools/perf/tests/cpumap.c @@ -5,6 +5,7 @@ #include "event.h" #include <string.h> #include <linux/bitops.h> +#include <perf/cpumap.h> #include "debug.h" struct machine; @@ -78,7 +79,7 @@ int test__cpu_map_synthesize(struct test *test __maybe_unused, int subtest __may struct perf_cpu_map *cpus; /* This one is better stores in mask. */ - cpus = cpu_map__new("0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19"); + cpus = perf_cpu_map__new("0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19"); TEST_ASSERT_VAL("failed to synthesize map", !perf_event__synthesize_cpu_map(NULL, cpus, process_event_mask, NULL)); @@ -86,7 +87,7 @@ int test__cpu_map_synthesize(struct test *test __maybe_unused, int subtest __may perf_cpu_map__put(cpus); /* This one is better stores in cpu values. */ - cpus = cpu_map__new("1,256"); + cpus = perf_cpu_map__new("1,256"); TEST_ASSERT_VAL("failed to synthesize map", !perf_event__synthesize_cpu_map(NULL, cpus, process_event_cpus, NULL)); @@ -97,7 +98,7 @@ int test__cpu_map_synthesize(struct test *test __maybe_unused, int subtest __may static int cpu_map_print(const char *str) { - struct perf_cpu_map *map = cpu_map__new(str); + struct perf_cpu_map *map = perf_cpu_map__new(str); char buf[100]; if (!map) diff --git a/tools/perf/tests/event-times.c b/tools/perf/tests/event-times.c index 165534f62036..00adba86403b 100644 --- a/tools/perf/tests/event-times.c +++ b/tools/perf/tests/event-times.c @@ -4,6 +4,7 @@ #include <inttypes.h> #include <string.h> #include <sys/wait.h> +#include <perf/cpumap.h> #include "tests.h" #include "evlist.h" #include "evsel.h" @@ -115,9 +116,9 @@ static int attach__cpu_disabled(struct evlist *evlist) pr_debug("attaching to CPU 0 as enabled\n"); - cpus = cpu_map__new("0"); + cpus = perf_cpu_map__new("0"); if (cpus == NULL) { - pr_debug("failed to call cpu_map__new\n"); + pr_debug("failed to call perf_cpu_map__new\n"); return -1; } @@ -144,9 +145,9 @@ static int attach__cpu_enabled(struct evlist *evlist) pr_debug("attaching to CPU 0 as enabled\n"); - cpus = cpu_map__new("0"); + cpus = perf_cpu_map__new("0"); if (cpus == NULL) { - pr_debug("failed to call cpu_map__new\n"); + pr_debug("failed to call perf_cpu_map__new\n"); return -1; } diff --git a/tools/perf/tests/event_update.c b/tools/perf/tests/event_update.c index 415d12e96834..2bc5145284c0 100644 --- a/tools/perf/tests/event_update.c +++ b/tools/perf/tests/event_update.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include <linux/compiler.h> +#include <perf/cpumap.h> #include "evlist.h" #include "evsel.h" #include "machine.h" @@ -108,7 +109,7 @@ int test__event_update(struct test *test __maybe_unused, int subtest __maybe_unu TEST_ASSERT_VAL("failed to synthesize attr update name", !perf_event__synthesize_event_update_name(&tmp.tool, evsel, process_event_name)); - evsel->own_cpus = cpu_map__new("1,2,3"); + evsel->own_cpus = perf_cpu_map__new("1,2,3"); TEST_ASSERT_VAL("failed to synthesize attr update cpus", !perf_event__synthesize_event_update_cpus(&tmp.tool, evsel, process_event_cpus)); diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c index 4fc7b3b4e153..46478ba1ed16 100644 --- a/tools/perf/tests/keep-tracking.c +++ b/tools/perf/tests/keep-tracking.c @@ -2,6 +2,7 @@ #include <linux/types.h> #include <unistd.h> #include <sys/prctl.h> +#include <perf/cpumap.h> #include "parse-events.h" #include "evlist.h" @@ -75,7 +76,7 @@ int test__keep_tracking(struct test *test __maybe_unused, int subtest __maybe_un threads = thread_map__new(-1, getpid(), UINT_MAX); CHECK_NOT_NULL__(threads); - cpus = cpu_map__new(NULL); + cpus = perf_cpu_map__new(NULL); CHECK_NOT_NULL__(cpus); evlist = evlist__new(); diff --git a/tools/perf/tests/mem2node.c b/tools/perf/tests/mem2node.c index 6fe2c1e7918b..5ec193f7968d 100644 --- a/tools/perf/tests/mem2node.c +++ b/tools/perf/tests/mem2node.c @@ -2,6 +2,7 @@ #include <linux/compiler.h> #include <linux/bitmap.h> #include <linux/zalloc.h> +#include <perf/cpumap.h> #include "cpumap.h" #include "mem2node.h" #include "tests.h" @@ -19,7 +20,7 @@ static struct node { static unsigned long *get_bitmap(const char *str, int nbits) { - struct perf_cpu_map *map = cpu_map__new(str); + struct perf_cpu_map *map = perf_cpu_map__new(str); unsigned long *bm = NULL; int i; diff --git a/tools/perf/tests/mmap-basic.c b/tools/perf/tests/mmap-basic.c index 9d8eb43b12cb..aa792aebd7f0 100644 --- a/tools/perf/tests/mmap-basic.c +++ b/tools/perf/tests/mmap-basic.c @@ -3,6 +3,7 @@ #include <inttypes.h> /* For the CLR_() macros */ #include <pthread.h> +#include <perf/cpumap.h> #include "evlist.h" #include "evsel.h" @@ -46,7 +47,7 @@ int test__basic_mmap(struct test *test __maybe_unused, int subtest __maybe_unuse return -1; } - cpus = cpu_map__new(NULL); + cpus = perf_cpu_map__new(NULL); if (cpus == NULL) { pr_debug("cpu_map__new\n"); goto out_free_threads; diff --git a/tools/perf/tests/openat-syscall-all-cpus.c b/tools/perf/tests/openat-syscall-all-cpus.c index 674b0fa035ec..d161b1a78703 100644 --- a/tools/perf/tests/openat-syscall-all-cpus.c +++ b/tools/perf/tests/openat-syscall-all-cpus.c @@ -33,7 +33,7 @@ int test__openat_syscall_event_on_all_cpus(struct test *test __maybe_unused, int return -1; } - cpus = cpu_map__new(NULL); + cpus = perf_cpu_map__new(NULL); if (cpus == NULL) { pr_debug("cpu_map__new\n"); goto out_thread_map_delete; diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c index dd07acced4af..9e0bbea15005 100644 --- a/tools/perf/tests/switch-tracking.c +++ b/tools/perf/tests/switch-tracking.c @@ -5,6 +5,7 @@ #include <time.h> #include <stdlib.h> #include <linux/zalloc.h> +#include <perf/cpumap.h> #include "parse-events.h" #include "evlist.h" @@ -341,9 +342,9 @@ int test__switch_tracking(struct test *test __maybe_unused, int subtest __maybe_ goto out_err; } - cpus = cpu_map__new(NULL); + cpus = perf_cpu_map__new(NULL); if (!cpus) { - pr_debug("cpu_map__new failed!\n"); + pr_debug("perf_cpu_map__new failed!\n"); goto out_err; } diff --git a/tools/perf/tests/topology.c b/tools/perf/tests/topology.c index 1b57ded58d59..a4f9f5182b47 100644 --- a/tools/perf/tests/topology.c +++ b/tools/perf/tests/topology.c @@ -2,6 +2,7 @@ #include <string.h> #include <stdlib.h> #include <stdio.h> +#include <perf/cpumap.h> #include "tests.h" #include "util.h" #include "session.h" @@ -126,7 +127,7 @@ int test__session_topology(struct test *test __maybe_unused, int subtest __maybe if (session_write_header(path)) goto free_path; - map = cpu_map__new(NULL); + map = perf_cpu_map__new(NULL); if (map == NULL) { pr_debug("failed to get system cpumap\n"); goto free_path; diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c index 44082e5eabde..71d4d7b35a57 100644 --- a/tools/perf/util/cpumap.c +++ b/tools/perf/util/cpumap.c @@ -17,185 +17,6 @@ static int max_present_cpu_num; static int max_node_num; static int *cpunode_map; -static struct perf_cpu_map *cpu_map__default_new(void) -{ - struct perf_cpu_map *cpus; - int nr_cpus; - - nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); - if (nr_cpus < 0) - return NULL; - - cpus = malloc(sizeof(*cpus) + nr_cpus * sizeof(int)); - if (cpus != NULL) { - int i; - for (i = 0; i < nr_cpus; ++i) - cpus->map[i] = i; - - cpus->nr = nr_cpus; - refcount_set(&cpus->refcnt, 1); - } - - return cpus; -} - -static struct perf_cpu_map *cpu_map__trim_new(int nr_cpus, int *tmp_cpus) -{ - size_t payload_size = nr_cpus * sizeof(int); - struct perf_cpu_map *cpus = malloc(sizeof(*cpus) + payload_size); - - if (cpus != NULL) { - cpus->nr = nr_cpus; - memcpy(cpus->map, tmp_cpus, payload_size); - refcount_set(&cpus->refcnt, 1); - } - - return cpus; -} - -struct perf_cpu_map *cpu_map__read(FILE *file) -{ - struct perf_cpu_map *cpus = NULL; - int nr_cpus = 0; - int *tmp_cpus = NULL, *tmp; - int max_entries = 0; - int n, cpu, prev; - char sep; - - sep = 0; - prev = -1; - for (;;) { - n = fscanf(file, "%u%c", &cpu, &sep); - if (n <= 0) - break; - if (prev >= 0) { - int new_max = nr_cpus + cpu - prev - 1; - - if (new_max >= max_entries) { - max_entries = new_max + MAX_NR_CPUS / 2; - tmp = realloc(tmp_cpus, max_entries * sizeof(int)); - if (tmp == NULL) - goto out_free_tmp; - tmp_cpus = tmp; - } - - while (++prev < cpu) - tmp_cpus[nr_cpus++] = prev; - } - if (nr_cpus == max_entries) { - max_entries += MAX_NR_CPUS; - tmp = realloc(tmp_cpus, max_entries * sizeof(int)); - if (tmp == NULL) - goto out_free_tmp; - tmp_cpus = tmp; - } - - tmp_cpus[nr_cpus++] = cpu; - if (n == 2 && sep == '-') - prev = cpu; - else - prev = -1; - if (n == 1 || sep == '\n') - break; - } - - if (nr_cpus > 0) - cpus = cpu_map__trim_new(nr_cpus, tmp_cpus); - else - cpus = cpu_map__default_new(); -out_free_tmp: - free(tmp_cpus); - return cpus; -} - -static struct perf_cpu_map *cpu_map__read_all_cpu_map(void) -{ - struct perf_cpu_map *cpus = NULL; - FILE *onlnf; - - onlnf = fopen("/sys/devices/system/cpu/online", "r"); - if (!onlnf) - return cpu_map__default_new(); - - cpus = cpu_map__read(onlnf); - fclose(onlnf); - return cpus; -} - -struct perf_cpu_map *cpu_map__new(const char *cpu_list) -{ - struct perf_cpu_map *cpus = NULL; - unsigned long start_cpu, end_cpu = 0; - char *p = NULL; - int i, nr_cpus = 0; - int *tmp_cpus = NULL, *tmp; - int max_entries = 0; - - if (!cpu_list) - return cpu_map__read_all_cpu_map(); - - /* - * must handle the case of empty cpumap to cover - * TOPOLOGY header for NUMA nodes with no CPU - * ( e.g., because of CPU hotplug) - */ - if (!isdigit(*cpu_list) && *cpu_list != '\0') - goto out; - - while (isdigit(*cpu_list)) { - p = NULL; - start_cpu = strtoul(cpu_list, &p, 0); - if (start_cpu >= INT_MAX - || (*p != '\0' && *p != ',' && *p != '-')) - goto invalid; - - if (*p == '-') { - cpu_list = ++p; - p = NULL; - end_cpu = strtoul(cpu_list, &p, 0); - - if (end_cpu >= INT_MAX || (*p != '\0' && *p != ',')) - goto invalid; - - if (end_cpu < start_cpu) - goto invalid; - } else { - end_cpu = start_cpu; - } - - for (; start_cpu <= end_cpu; start_cpu++) { - /* check for duplicates */ - for (i = 0; i < nr_cpus; i++) - if (tmp_cpus[i] == (int)start_cpu) - goto invalid; - - if (nr_cpus == max_entries) { - max_entries += MAX_NR_CPUS; - tmp = realloc(tmp_cpus, max_entries * sizeof(int)); - if (tmp == NULL) - goto invalid; - tmp_cpus = tmp; - } - tmp_cpus[nr_cpus++] = (int)start_cpu; - } - if (*p) - ++p; - - cpu_list = p; - } - - if (nr_cpus > 0) - cpus = cpu_map__trim_new(nr_cpus, tmp_cpus); - else if (*cpu_list != '\0') - cpus = cpu_map__default_new(); - else - cpus = perf_cpu_map__dummy_new(); -invalid: - free(tmp_cpus); -out: - return cpus; -} - static struct perf_cpu_map *cpu_map__from_entries(struct cpu_map_entries *cpus) { struct perf_cpu_map *map; @@ -751,7 +572,7 @@ const struct perf_cpu_map *cpu_map__online(void) /* thread unsafe */ static const struct perf_cpu_map *online = NULL; if (!online) - online = cpu_map__new(NULL); /* from /sys/devices/system/cpu/online */ + online = perf_cpu_map__new(NULL); /* from /sys/devices/system/cpu/online */ return online; } diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h index b7af2cb68c19..a3d27f4131be 100644 --- a/tools/perf/util/cpumap.h +++ b/tools/perf/util/cpumap.h @@ -11,10 +11,8 @@ #include "perf.h" #include "util/debug.h" -struct perf_cpu_map *cpu_map__new(const char *cpu_list); struct perf_cpu_map *cpu_map__empty_new(int nr); struct perf_cpu_map *cpu_map__new_data(struct cpu_map_data *data); -struct perf_cpu_map *cpu_map__read(FILE *file); size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size); size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size); size_t cpu_map__fprintf(struct perf_cpu_map *map, FILE *fp); diff --git a/tools/perf/util/cputopo.c b/tools/perf/util/cputopo.c index 0cd99c460cd4..4f70155eaf83 100644 --- a/tools/perf/util/cputopo.c +++ b/tools/perf/util/cputopo.c @@ -5,6 +5,7 @@ #include <stdlib.h> #include <api/fs/fs.h> #include <linux/zalloc.h> +#include <perf/cpumap.h> #include "cputopo.h" #include "cpumap.h" @@ -182,7 +183,7 @@ struct cpu_topology *cpu_topology__new(void) ncpus = cpu__max_present_cpu(); /* build online CPU map */ - map = cpu_map__new(NULL); + map = perf_cpu_map__new(NULL); if (map == NULL) { pr_debug("failed to get system cpumap\n"); return NULL; @@ -312,7 +313,7 @@ struct numa_topology *numa_topology__new(void) if (c) *c = '\0'; - node_map = cpu_map__new(buf); + node_map = perf_cpu_map__new(buf); if (!node_map) goto out; diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index ae75777a0ba4..67c67e9a38cd 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -34,6 +34,7 @@ #include <linux/err.h> #include <linux/zalloc.h> #include <perf/evlist.h> +#include <perf/cpumap.h> #ifdef LACKS_SIGQUEUE_PROTOTYPE int sigqueue(pid_t pid, int sig, const union sigval value); @@ -1089,7 +1090,7 @@ int perf_evlist__create_maps(struct evlist *evlist, struct target *target) if (target__uses_dummy_map(target)) cpus = perf_cpu_map__dummy_new(); else - cpus = cpu_map__new(target->cpu_list); + cpus = perf_cpu_map__new(target->cpu_list); if (!cpus) goto out_delete_threads; @@ -1372,7 +1373,7 @@ static int perf_evlist__create_syswide_maps(struct evlist *evlist) * error, and we may not want to do that fallback to a * default cpu identity map :-\ */ - cpus = cpu_map__new(NULL); + cpus = perf_cpu_map__new(NULL); if (!cpus) goto out; diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index d81afe56392c..fa914ba8cd56 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -20,6 +20,7 @@ #include <linux/time64.h> #include <dirent.h> #include <bpf/libbpf.h> +#include <perf/cpumap.h> #include "evlist.h" #include "evsel.h" @@ -2348,7 +2349,7 @@ static int process_numa_topology(struct feat_fd *ff, void *data __maybe_unused) if (!str) goto error; - n->map = cpu_map__new(str); + n->map = perf_cpu_map__new(str); if (!n->map) goto error; diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index ec7ce18b999a..db2460d6b625 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -24,6 +24,7 @@ #include "bpf-loader.h" #include "debug.h" #include <api/fs/tracing_path.h> +#include <perf/cpumap.h> #include "parse-events-bison.h" #define YY_EXTRA_TYPE int #include "parse-events-flex.h" @@ -323,7 +324,7 @@ __add_event(struct list_head *list, int *idx, { struct evsel *evsel; struct perf_cpu_map *cpus = pmu ? pmu->cpus : - cpu_list ? cpu_map__new(cpu_list) : NULL; + cpu_list ? perf_cpu_map__new(cpu_list) : NULL; event_attr_init(attr); diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index d355f9506a1c..b7da21a7d627 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -15,6 +15,7 @@ #include <api/fs/fs.h> #include <locale.h> #include <regex.h> +#include <perf/cpumap.h> #include "pmu.h" #include "parse-events.h" #include "cpumap.h" @@ -581,7 +582,7 @@ static struct perf_cpu_map *__pmu_cpumask(const char *path) if (!file) return NULL; - cpus = cpu_map__read(file); + cpus = perf_cpu_map__read(file); fclose(file); return cpus; } diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 23a4fa13b92d..75ecc32a4427 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -4,6 +4,7 @@ #include <inttypes.h> #include <poll.h> #include <linux/err.h> +#include <perf/cpumap.h> #include "evlist.h" #include "callchain.h" #include "evsel.h" @@ -549,7 +550,7 @@ static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus, kwlist, &cpustr)) return -1; - pcpus->cpus = cpu_map__new(cpustr); + pcpus->cpus = perf_cpu_map__new(cpustr); if (pcpus->cpus == NULL) return -1; return 0; diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c index 445788819969..03dcdb3f33a7 100644 --- a/tools/perf/util/record.c +++ b/tools/perf/util/record.c @@ -6,6 +6,7 @@ #include <errno.h> #include <api/fs/fs.h> #include <subcmd/parse-options.h> +#include <perf/cpumap.h> #include "util.h" #include "cloexec.h" @@ -63,7 +64,7 @@ static bool perf_probe_api(setup_probe_fn_t fn) struct perf_cpu_map *cpus; int cpu, ret, i = 0; - cpus = cpu_map__new(NULL); + cpus = perf_cpu_map__new(NULL); if (!cpus) return false; cpu = cpus->map[0]; @@ -118,7 +119,7 @@ bool perf_can_record_cpu_wide(void) struct perf_cpu_map *cpus; int cpu, fd; - cpus = cpu_map__new(NULL); + cpus = perf_cpu_map__new(NULL); if (!cpus) return false; cpu = cpus->map[0]; @@ -275,7 +276,7 @@ bool perf_evlist__can_select_event(struct evlist *evlist, const char *str) evsel = perf_evlist__last(temp_evlist); if (!evlist || cpu_map__empty(evlist->cpus)) { - struct perf_cpu_map *cpus = cpu_map__new(NULL); + struct perf_cpu_map *cpus = perf_cpu_map__new(NULL); cpu = cpus ? cpus->map[0] : 0; perf_cpu_map__put(cpus); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 1f3dc7a8cee6..11e6093c941b 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -10,6 +10,7 @@ #include <unistd.h> #include <sys/types.h> #include <sys/mman.h> +#include <perf/cpumap.h> #include "evlist.h" #include "evsel.h" @@ -2289,7 +2290,7 @@ int perf_session__cpu_bitmap(struct perf_session *session, } } - map = cpu_map__new(cpu_list); + map = perf_cpu_map__new(cpu_list); if (map == NULL) { pr_err("Invalid cpu_list\n"); return -1; diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c index a9ca5c4fffee..ae6a534a7a80 100644 --- a/tools/perf/util/svghelper.c +++ b/tools/perf/util/svghelper.c @@ -16,6 +16,7 @@ #include <linux/bitmap.h> #include <linux/time64.h> #include <linux/zalloc.h> +#include <perf/cpumap.h> #include "perf.h" #include "svghelper.h" @@ -731,7 +732,7 @@ static int str_to_bitmap(char *s, cpumask_t *b) struct perf_cpu_map *m; int c; - m = cpu_map__new(s); + m = perf_cpu_map__new(s); if (!m) return -1; |