diff options
Diffstat (limited to 'src/tools/perf/builtin-trace.c')
| -rw-r--r-- | src/tools/perf/builtin-trace.c | 1293 |
1 files changed, 0 insertions, 1293 deletions
diff --git a/src/tools/perf/builtin-trace.c b/src/tools/perf/builtin-trace.c deleted file mode 100644 index 99c8d9a..0000000 --- a/src/tools/perf/builtin-trace.c +++ /dev/null @@ -1,1293 +0,0 @@ -#include <traceevent/event-parse.h> -#include "builtin.h" -#include "util/color.h" -#include "util/debug.h" -#include "util/evlist.h" -#include "util/machine.h" -#include "util/session.h" -#include "util/thread.h" -#include "util/parse-options.h" -#include "util/strlist.h" -#include "util/intlist.h" -#include "util/thread_map.h" - -#include <libaudit.h> -#include <stdlib.h> -#include <sys/mman.h> -#include <linux/futex.h> - -/* For older distros: */ -#ifndef MAP_STACK -# define MAP_STACK 0x20000 -#endif - -#ifndef MADV_HWPOISON -# define MADV_HWPOISON 100 -#endif - -#ifndef MADV_MERGEABLE -# define MADV_MERGEABLE 12 -#endif - -#ifndef MADV_UNMERGEABLE -# define MADV_UNMERGEABLE 13 -#endif - -static size_t syscall_arg__scnprintf_hex(char *bf, size_t size, - unsigned long arg, - u8 arg_idx __maybe_unused, - u8 *arg_mask __maybe_unused) -{ - return scnprintf(bf, size, "%#lx", arg); -} - -#define SCA_HEX syscall_arg__scnprintf_hex - -static size_t syscall_arg__scnprintf_whence(char *bf, size_t size, - unsigned long arg, - u8 arg_idx __maybe_unused, - u8 *arg_mask __maybe_unused) -{ - int whence = arg; - - switch (whence) { -#define P_WHENCE(n) case SEEK_##n: return scnprintf(bf, size, #n) - P_WHENCE(SET); - P_WHENCE(CUR); - P_WHENCE(END); -#ifdef SEEK_DATA - P_WHENCE(DATA); -#endif -#ifdef SEEK_HOLE - P_WHENCE(HOLE); -#endif -#undef P_WHENCE - default: break; - } - - return scnprintf(bf, size, "%#x", whence); -} - -#define SCA_WHENCE syscall_arg__scnprintf_whence - -static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size, - unsigned long arg, - u8 arg_idx __maybe_unused, - u8 *arg_mask __maybe_unused) -{ - int printed = 0, prot = arg; - - if (prot == PROT_NONE) - return scnprintf(bf, size, "NONE"); -#define P_MMAP_PROT(n) \ - if (prot & PROT_##n) { \ - printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ - prot &= ~PROT_##n; \ - } - - P_MMAP_PROT(EXEC); - P_MMAP_PROT(READ); - P_MMAP_PROT(WRITE); -#ifdef PROT_SEM - P_MMAP_PROT(SEM); -#endif - P_MMAP_PROT(GROWSDOWN); - P_MMAP_PROT(GROWSUP); -#undef P_MMAP_PROT - - if (prot) - printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", prot); - - return printed; -} - -#define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot - -static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size, - unsigned long arg, u8 arg_idx __maybe_unused, - u8 *arg_mask __maybe_unused) -{ - int printed = 0, flags = arg; - -#define P_MMAP_FLAG(n) \ - if (flags & MAP_##n) { \ - printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ - flags &= ~MAP_##n; \ - } - - P_MMAP_FLAG(SHARED); - P_MMAP_FLAG(PRIVATE); -#ifdef MAP_32BIT - P_MMAP_FLAG(32BIT); -#endif - P_MMAP_FLAG(ANONYMOUS); - P_MMAP_FLAG(DENYWRITE); - P_MMAP_FLAG(EXECUTABLE); - P_MMAP_FLAG(FILE); - P_MMAP_FLAG(FIXED); - P_MMAP_FLAG(GROWSDOWN); -#ifdef MAP_HUGETLB - P_MMAP_FLAG(HUGETLB); -#endif - P_MMAP_FLAG(LOCKED); - P_MMAP_FLAG(NONBLOCK); - P_MMAP_FLAG(NORESERVE); - P_MMAP_FLAG(POPULATE); - P_MMAP_FLAG(STACK); -#ifdef MAP_UNINITIALIZED - P_MMAP_FLAG(UNINITIALIZED); -#endif -#undef P_MMAP_FLAG - - if (flags) - printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); - - return printed; -} - -#define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags - -static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size, - unsigned long arg, u8 arg_idx __maybe_unused, - u8 *arg_mask __maybe_unused) -{ - int behavior = arg; - - switch (behavior) { -#define P_MADV_BHV(n) case MADV_##n: return scnprintf(bf, size, #n) - P_MADV_BHV(NORMAL); - P_MADV_BHV(RANDOM); - P_MADV_BHV(SEQUENTIAL); - P_MADV_BHV(WILLNEED); - P_MADV_BHV(DONTNEED); - P_MADV_BHV(REMOVE); - P_MADV_BHV(DONTFORK); - P_MADV_BHV(DOFORK); - P_MADV_BHV(HWPOISON); -#ifdef MADV_SOFT_OFFLINE - P_MADV_BHV(SOFT_OFFLINE); -#endif - P_MADV_BHV(MERGEABLE); - P_MADV_BHV(UNMERGEABLE); -#ifdef MADV_HUGEPAGE - P_MADV_BHV(HUGEPAGE); -#endif -#ifdef MADV_NOHUGEPAGE - P_MADV_BHV(NOHUGEPAGE); -#endif -#ifdef MADV_DONTDUMP - P_MADV_BHV(DONTDUMP); -#endif -#ifdef MADV_DODUMP - P_MADV_BHV(DODUMP); -#endif -#undef P_MADV_PHV - default: break; - } - - return scnprintf(bf, size, "%#x", behavior); -} - -#define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior - -static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, unsigned long arg, - u8 arg_idx __maybe_unused, u8 *arg_mask) -{ - enum syscall_futex_args { - SCF_UADDR = (1 << 0), - SCF_OP = (1 << 1), - SCF_VAL = (1 << 2), - SCF_TIMEOUT = (1 << 3), - SCF_UADDR2 = (1 << 4), - SCF_VAL3 = (1 << 5), - }; - int op = arg; - int cmd = op & FUTEX_CMD_MASK; - size_t printed = 0; - - switch (cmd) { -#define P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, #n); - P_FUTEX_OP(WAIT); *arg_mask |= SCF_VAL3|SCF_UADDR2; break; - P_FUTEX_OP(WAKE); *arg_mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; - P_FUTEX_OP(FD); *arg_mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; - P_FUTEX_OP(REQUEUE); *arg_mask |= SCF_VAL3|SCF_TIMEOUT; break; - P_FUTEX_OP(CMP_REQUEUE); *arg_mask |= SCF_TIMEOUT; break; - P_FUTEX_OP(CMP_REQUEUE_PI); *arg_mask |= SCF_TIMEOUT; break; - P_FUTEX_OP(WAKE_OP); break; - P_FUTEX_OP(LOCK_PI); *arg_mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; - P_FUTEX_OP(UNLOCK_PI); *arg_mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; - P_FUTEX_OP(TRYLOCK_PI); *arg_mask |= SCF_VAL3|SCF_UADDR2; break; - P_FUTEX_OP(WAIT_BITSET); *arg_mask |= SCF_UADDR2; break; - P_FUTEX_OP(WAKE_BITSET); *arg_mask |= SCF_UADDR2; break; - P_FUTEX_OP(WAIT_REQUEUE_PI); break; - default: printed = scnprintf(bf, size, "%#x", cmd); break; - } - - if (op & FUTEX_PRIVATE_FLAG) - printed += scnprintf(bf + printed, size - printed, "|PRIV"); - - if (op & FUTEX_CLOCK_REALTIME) - printed += scnprintf(bf + printed, size - printed, "|CLKRT"); - - return printed; -} - -#define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op - -static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, - unsigned long arg, - u8 arg_idx, u8 *arg_mask) -{ - int printed = 0, flags = arg; - - if (!(flags & O_CREAT)) - *arg_mask |= 1 << (arg_idx + 1); /* Mask the mode parm */ - - if (flags == 0) - return scnprintf(bf, size, "RDONLY"); -#define P_FLAG(n) \ - if (flags & O_##n) { \ - printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ - flags &= ~O_##n; \ - } - - P_FLAG(APPEND); - P_FLAG(ASYNC); - P_FLAG(CLOEXEC); - P_FLAG(CREAT); - P_FLAG(DIRECT); - P_FLAG(DIRECTORY); - P_FLAG(EXCL); - P_FLAG(LARGEFILE); - P_FLAG(NOATIME); - P_FLAG(NOCTTY); -#ifdef O_NONBLOCK - P_FLAG(NONBLOCK); -#elif O_NDELAY - P_FLAG(NDELAY); -#endif -#ifdef O_PATH - P_FLAG(PATH); -#endif - P_FLAG(RDWR); -#ifdef O_DSYNC - if ((flags & O_SYNC) == O_SYNC) - printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", "SYNC"); - else { - P_FLAG(DSYNC); - } -#else - P_FLAG(SYNC); -#endif - P_FLAG(TRUNC); - P_FLAG(WRONLY); -#undef P_FLAG - - if (flags) - printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); - - return printed; -} - -#define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags - -static struct syscall_fmt { - const char *name; - const char *alias; - size_t (*arg_scnprintf[6])(char *bf, size_t size, unsigned long arg, u8 arg_idx, u8 *arg_mask); - bool errmsg; - bool timeout; - bool hexret; -} syscall_fmts[] = { - { .name = "access", .errmsg = true, }, - { .name = "arch_prctl", .errmsg = true, .alias = "prctl", }, - { .name = "brk", .hexret = true, - .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, }, - { .name = "mmap", .hexret = true, }, - { .name = "connect", .errmsg = true, }, - { .name = "fstat", .errmsg = true, .alias = "newfstat", }, - { .name = "fstatat", .errmsg = true, .alias = "newfstatat", }, - { .name = "futex", .errmsg = true, - .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, }, - { .name = "ioctl", .errmsg = true, - .arg_scnprintf = { [2] = SCA_HEX, /* arg */ }, }, - { .name = "lseek", .errmsg = true, - .arg_scnprintf = { [2] = SCA_WHENCE, /* whence */ }, }, - { .name = "lstat", .errmsg = true, .alias = "newlstat", }, - { .name = "madvise", .errmsg = true, - .arg_scnprintf = { [0] = SCA_HEX, /* start */ - [2] = SCA_MADV_BHV, /* behavior */ }, }, - { .name = "mmap", .hexret = true, - .arg_scnprintf = { [0] = SCA_HEX, /* addr */ - [2] = SCA_MMAP_PROT, /* prot */ - [3] = SCA_MMAP_FLAGS, /* flags */ }, }, - { .name = "mprotect", .errmsg = true, - .arg_scnprintf = { [0] = SCA_HEX, /* start */ - [2] = SCA_MMAP_PROT, /* prot */ }, }, - { .name = "mremap", .hexret = true, - .arg_scnprintf = { [0] = SCA_HEX, /* addr */ - [4] = SCA_HEX, /* new_addr */ }, }, - { .name = "munmap", .errmsg = true, - .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, - { .name = "open", .errmsg = true, - .arg_scnprintf = { [1] = SCA_OPEN_FLAGS, /* flags */ }, }, - { .name = "open_by_handle_at", .errmsg = true, - .arg_scnprintf = { [2] = SCA_OPEN_FLAGS, /* flags */ }, }, - { .name = "openat", .errmsg = true, - .arg_scnprintf = { [2] = SCA_OPEN_FLAGS, /* flags */ }, }, - { .name = "poll", .errmsg = true, .timeout = true, }, - { .name = "ppoll", .errmsg = true, .timeout = true, }, - { .name = "pread", .errmsg = true, .alias = "pread64", }, - { .name = "pwrite", .errmsg = true, .alias = "pwrite64", }, - { .name = "read", .errmsg = true, }, - { .name = "recvfrom", .errmsg = true, }, - { .name = "select", .errmsg = true, .timeout = true, }, - { .name = "socket", .errmsg = true, }, - { .name = "stat", .errmsg = true, .alias = "newstat", }, - { .name = "uname", .errmsg = true, .alias = "newuname", }, -}; - -static int syscall_fmt__cmp(const void *name, const void *fmtp) -{ - const struct syscall_fmt *fmt = fmtp; - return strcmp(name, fmt->name); -} - -static struct syscall_fmt *syscall_fmt__find(const char *name) -{ - const int nmemb = ARRAY_SIZE(syscall_fmts); - return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp); -} - -struct syscall { - struct event_format *tp_format; - const char *name; - bool filtered; - struct syscall_fmt *fmt; - size_t (**arg_scnprintf)(char *bf, size_t size, - unsigned long arg, u8 arg_idx, u8 *args_mask); -}; - -static size_t fprintf_duration(unsigned long t, FILE *fp) -{ - double duration = (double)t / NSEC_PER_MSEC; - size_t printed = fprintf(fp, "("); - - if (duration >= 1.0) - printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration); - else if (duration >= 0.01) - printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration); - else - printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration); - return printed + fprintf(fp, "): "); -} - -struct thread_trace { - u64 entry_time; - u64 exit_time; - bool entry_pending; - unsigned long nr_events; - char *entry_str; - double runtime_ms; -}; - -static struct thread_trace *thread_trace__new(void) -{ - return zalloc(sizeof(struct thread_trace)); -} - -static struct thread_trace *thread__trace(struct thread *thread, FILE *fp) -{ - struct thread_trace *ttrace; - - if (thread == NULL) - goto fail; - - if (thread->priv == NULL) - thread->priv = thread_trace__new(); - - if (thread->priv == NULL) - goto fail; - - ttrace = thread->priv; - ++ttrace->nr_events; - - return ttrace; -fail: - color_fprintf(fp, PERF_COLOR_RED, - "WARNING: not enough memory, dropping samples!\n"); - return NULL; -} - -struct trace { - struct perf_tool tool; - int audit_machine; - struct { - int max; - struct syscall *table; - } syscalls; - struct perf_record_opts opts; - struct machine host; - u64 base_time; - FILE *output; - unsigned long nr_events; - struct strlist *ev_qualifier; - bool not_ev_qualifier; - struct intlist *tid_list; - struct intlist *pid_list; - bool sched; - bool multiple_threads; - double duration_filter; - double runtime_ms; -}; - -static bool trace__filter_duration(struct trace *trace, double t) -{ - return t < (trace->duration_filter * NSEC_PER_MSEC); -} - -static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp) -{ - double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC; - - return fprintf(fp, "%10.3f ", ts); -} - -static bool done = false; - -static void sig_handler(int sig __maybe_unused) -{ - done = true; -} - -static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread, - u64 duration, u64 tstamp, FILE *fp) -{ - size_t printed = trace__fprintf_tstamp(trace, tstamp, fp); - printed += fprintf_duration(duration, fp); - - if (trace->multiple_threads) - printed += fprintf(fp, "%d ", thread->tid); - - return printed; -} - -static int trace__process_event(struct trace *trace, struct machine *machine, - union perf_event *event) -{ - int ret = 0; - - switch (event->header.type) { - case PERF_RECORD_LOST: - color_fprintf(trace->output, PERF_COLOR_RED, - "LOST %" PRIu64 " events!\n", event->lost.lost); - ret = machine__process_lost_event(machine, event); - default: - ret = machine__process_event(machine, event); - break; - } - - return ret; -} - -static int trace__tool_process(struct perf_tool *tool, - union perf_event *event, - struct perf_sample *sample __maybe_unused, - struct machine *machine) -{ - struct trace *trace = container_of(tool, struct trace, tool); - return trace__process_event(trace, machine, event); -} - -static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist) -{ - int err = symbol__init(); - - if (err) - return err; - - machine__init(&trace->host, "", HOST_KERNEL_ID); - machine__create_kernel_maps(&trace->host); - - if (perf_target__has_task(&trace->opts.target)) { - err = perf_event__synthesize_thread_map(&trace->tool, evlist->threads, - trace__tool_process, - &trace->host); - } else { - err = perf_event__synthesize_threads(&trace->tool, trace__tool_process, - &trace->host); - } - - if (err) - symbol__exit(); - - return err; -} - -static int syscall__set_arg_fmts(struct syscall *sc) -{ - struct format_field *field; - int idx = 0; - - sc->arg_scnprintf = calloc(sc->tp_format->format.nr_fields - 1, sizeof(void *)); - if (sc->arg_scnprintf == NULL) - return -1; - - for (field = sc->tp_format->format.fields->next; field; field = field->next) { - if (sc->fmt && sc->fmt->arg_scnprintf[idx]) - sc->arg_scnprintf[idx] = sc->fmt->arg_scnprintf[idx]; - else if (field->flags & FIELD_IS_POINTER) - sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex; - ++idx; - } - - return 0; -} - -static int trace__read_syscall_info(struct trace *trace, int id) -{ - char tp_name[128]; - struct syscall *sc; - const char *name = audit_syscall_to_name(id, trace->audit_machine); - - if (name == NULL) - return -1; - - if (id > trace->syscalls.max) { - struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc)); - - if (nsyscalls == NULL) - return -1; - - if (trace->syscalls.max != -1) { - memset(nsyscalls + trace->syscalls.max + 1, 0, - (id - trace->syscalls.max) * sizeof(*sc)); - } else { - memset(nsyscalls, 0, (id + 1) * sizeof(*sc)); - } - - trace->syscalls.table = nsyscalls; - trace->syscalls.max = id; - } - - sc = trace->syscalls.table + id; - sc->name = name; - - if (trace->ev_qualifier) { - bool in = strlist__find(trace->ev_qualifier, name) != NULL; - - if (!(in ^ trace->not_ev_qualifier)) { - sc->filtered = true; - /* - * No need to do read tracepoint information since this will be - * filtered out. - */ - return 0; - } - } - - sc->fmt = syscall_fmt__find(sc->name); - - snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name); - sc->tp_format = event_format__new("syscalls", tp_name); - - if (sc->tp_format == NULL && sc->fmt && sc->fmt->alias) { - snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias); - sc->tp_format = event_format__new("syscalls", tp_name); - } - - if (sc->tp_format == NULL) - return -1; - - return syscall__set_arg_fmts(sc); -} - -static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size, - unsigned long *args) -{ - int i = 0; - size_t printed = 0; - - if (sc->tp_format != NULL) { - struct format_field *field; - u8 mask = 0, bit = 1; - - for (field = sc->tp_format->format.fields->next; field; - field = field->next, ++i, bit <<= 1) { - if (mask & bit) - continue; - - printed += scnprintf(bf + printed, size - printed, - "%s%s: ", printed ? ", " : "", field->name); - - if (sc->arg_scnprintf && sc->arg_scnprintf[i]) { - printed += sc->arg_scnprintf[i](bf + printed, size - printed, - args[i], i, &mask); - } else { - printed += scnprintf(bf + printed, size - printed, - "%ld", args[i]); - } - } - } else { - while (i < 6) { - printed += scnprintf(bf + printed, size - printed, - "%sarg%d: %ld", - printed ? ", " : "", i, args[i]); - ++i; - } - } - - return printed; -} - -typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel, - struct perf_sample *sample); - -static struct syscall *trace__syscall_info(struct trace *trace, - struct perf_evsel *evsel, - struct perf_sample *sample) -{ - int id = perf_evsel__intval(evsel, sample, "id"); - - if (id < 0) { - - /* - * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried - * before that, leaving at a higher verbosity level till that is - * explained. Reproduced with plain ftrace with: - * - * echo 1 > /t/events/raw_syscalls/sys_exit/enable - * grep "NR -1 " /t/trace_pipe - * - * After generating some load on the machine. - */ - if (verbose > 1) { - static u64 n; - fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n", - id, perf_evsel__name(evsel), ++n); - } - return NULL; - } - - if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) && - trace__read_syscall_info(trace, id)) - goto out_cant_read; - - if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL)) - goto out_cant_read; - - return &trace->syscalls.table[id]; - -out_cant_read: - if (verbose) { - fprintf(trace->output, "Problems reading syscall %d", id); - if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL) - fprintf(trace->output, "(%s)", trace->syscalls.table[id].name); - fputs(" information\n", trace->output); - } - return NULL; -} - -static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel, - struct perf_sample *sample) -{ - char *msg; - void *args; - size_t printed = 0; - struct thread *thread; - struct syscall *sc = trace__syscall_info(trace, evsel, sample); - struct thread_trace *ttrace; - - if (sc == NULL) - return -1; - - if (sc->filtered) - return 0; - - thread = machine__findnew_thread(&trace->host, sample->pid, - sample->tid); - ttrace = thread__trace(thread, trace->output); - if (ttrace == NULL) - return -1; - - args = perf_evsel__rawptr(evsel, sample, "args"); - if (args == NULL) { - fprintf(trace->output, "Problems reading syscall arguments\n"); - return -1; - } - - ttrace = thread->priv; - - if (ttrace->entry_str == NULL) { - ttrace->entry_str = malloc(1024); - if (!ttrace->entry_str) - return -1; - } - - ttrace->entry_time = sample->time; - msg = ttrace->entry_str; - printed += scnprintf(msg + printed, 1024 - printed, "%s(", sc->name); - - printed += syscall__scnprintf_args(sc, msg + printed, 1024 - printed, args); - - if (!strcmp(sc->name, "exit_group") || !strcmp(sc->name, "exit")) { - if (!trace->duration_filter) { - trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output); - fprintf(trace->output, "%-70s\n", ttrace->entry_str); - } - } else - ttrace->entry_pending = true; - - return 0; -} - -static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel, - struct perf_sample *sample) -{ - int ret; - u64 duration = 0; - struct thread *thread; - struct syscall *sc = trace__syscall_info(trace, evsel, sample); - struct thread_trace *ttrace; - - if (sc == NULL) - return -1; - - if (sc->filtered) - return 0; - - thread = machine__findnew_thread(&trace->host, sample->pid, - sample->tid); - ttrace = thread__trace(thread, trace->output); - if (ttrace == NULL) - return -1; - - ret = perf_evsel__intval(evsel, sample, "ret"); - - ttrace = thread->priv; - - ttrace->exit_time = sample->time; - - if (ttrace->entry_time) { - duration = sample->time - ttrace->entry_time; - if (trace__filter_duration(trace, duration)) - goto out; - } else if (trace->duration_filter) - goto out; - - trace__fprintf_entry_head(trace, thread, duration, sample->time, trace->output); - - if (ttrace->entry_pending) { - fprintf(trace->output, "%-70s", ttrace->entry_str); - } else { - fprintf(trace->output, " ... ["); - color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued"); - fprintf(trace->output, "]: %s()", sc->name); - } - - if (sc->fmt == NULL) { -signed_print: - fprintf(trace->output, ") = %d", ret); - } else if (ret < 0 && sc->fmt->errmsg) { - char bf[256]; - const char *emsg = strerror_r(-ret, bf, sizeof(bf)), - *e = audit_errno_to_name(-ret); - - fprintf(trace->output, ") = -1 %s %s", e, emsg); - } else if (ret == 0 && sc->fmt->timeout) - fprintf(trace->output, ") = 0 Timeout"); - else if (sc->fmt->hexret) - fprintf(trace->output, ") = %#x", ret); - else - goto signed_print; - - fputc('\n', trace->output); -out: - ttrace->entry_pending = false; - - return 0; -} - -static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel, - struct perf_sample *sample) -{ - u64 runtime = perf_evsel__intval(evsel, sample, "runtime"); - double runtime_ms = (double)runtime / NSEC_PER_MSEC; - struct thread *thread = machine__findnew_thread(&trace->host, - sample->pid, - sample->tid); - struct thread_trace *ttrace = thread__trace(thread, trace->output); - - if (ttrace == NULL) - goto out_dump; - - ttrace->runtime_ms += runtime_ms; - trace->runtime_ms += runtime_ms; - return 0; - -out_dump: - fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n", - evsel->name, - perf_evsel__strval(evsel, sample, "comm"), - (pid_t)perf_evsel__intval(evsel, sample, "pid"), - runtime, - perf_evsel__intval(evsel, sample, "vruntime")); - return 0; -} - -static bool skip_sample(struct trace *trace, struct perf_sample *sample) -{ - if ((trace->pid_list && intlist__find(trace->pid_list, sample->pid)) || - (trace->tid_list && intlist__find(trace->tid_list, sample->tid))) - return false; - - if (trace->pid_list || trace->tid_list) - return true; - - return false; -} - -static int trace__process_sample(struct perf_tool *tool, - union perf_event *event __maybe_unused, - struct perf_sample *sample, - struct perf_evsel *evsel, - struct machine *machine __maybe_unused) -{ - struct trace *trace = container_of(tool, struct trace, tool); - int err = 0; - - tracepoint_handler handler = evsel->handler.func; - - if (skip_sample(trace, sample)) - return 0; - - if (trace->base_time == 0) - trace->base_time = sample->time; - - if (handler) - handler(trace, evsel, sample); - - return err; -} - -static bool -perf_session__has_tp(struct perf_session *session, const char *name) -{ - struct perf_evsel *evsel; - - evsel = perf_evlist__find_tracepoint_by_name(session->evlist, name); - - return evsel != NULL; -} - -static int parse_target_str(struct trace *trace) -{ - if (trace->opts.target.pid) { - trace->pid_list = intlist__new(trace->opts.target.pid); - if (trace->pid_list == NULL) { - pr_err("Error parsing process id string\n"); - return -EINVAL; - } - } - - if (trace->opts.target.tid) { - trace->tid_list = intlist__new(trace->opts.target.tid); - if (trace->tid_list == NULL) { - pr_err("Error parsing thread id string\n"); - return -EINVAL; - } - } - - return 0; -} - -static int trace__run(struct trace *trace, int argc, const char **argv) -{ - struct perf_evlist *evlist = perf_evlist__new(); - struct perf_evsel *evsel; - int err = -1, i; - unsigned long before; - const bool forks = argc > 0; - - if (evlist == NULL) { - fprintf(trace->output, "Not enough memory to run!\n"); - goto out; - } - - if (perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_enter", trace__sys_enter) || - perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_exit", trace__sys_exit)) { - fprintf(trace->output, "Couldn't read the raw_syscalls tracepoints information!\n"); - goto out_delete_evlist; - } - - if (trace->sched && - perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime", - trace__sched_stat_runtime)) { - fprintf(trace->output, "Couldn't read the sched_stat_runtime tracepoint information!\n"); - goto out_delete_evlist; - } - - err = perf_evlist__create_maps(evlist, &trace->opts.target); - if (err < 0) { - fprintf(trace->output, "Problems parsing the target to trace, check your options!\n"); - goto out_delete_evlist; - } - - err = trace__symbols_init(trace, evlist); - if (err < 0) { - fprintf(trace->output, "Problems initializing symbol libraries!\n"); - goto out_delete_maps; - } - - perf_evlist__config(evlist, &trace->opts); - - signal(SIGCHLD, sig_handler); - signal(SIGINT, sig_handler); - - if (forks) { - err = perf_evlist__prepare_workload(evlist, &trace->opts.target, - argv, false, false); - if (err < 0) { - fprintf(trace->output, "Couldn't run the workload!\n"); - goto out_delete_maps; - } - } - - err = perf_evlist__open(evlist); - if (err < 0) { - fprintf(trace->output, "Couldn't create the events: %s\n", strerror(errno)); - goto out_delete_maps; - } - - err = perf_evlist__mmap(evlist, UINT_MAX, false); - if (err < 0) { - fprintf(trace->output, "Couldn't mmap the events: %s\n", strerror(errno)); - goto out_close_evlist; - } - - perf_evlist__enable(evlist); - - if (forks) - perf_evlist__start_workload(evlist); - - trace->multiple_threads = evlist->threads->map[0] == -1 || evlist->threads->nr > 1; -again: - before = trace->nr_events; - - for (i = 0; i < evlist->nr_mmaps; i++) { - union perf_event *event; - - while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { - const u32 type = event->header.type; - tracepoint_handler handler; - struct perf_sample sample; - - ++trace->nr_events; - - err = perf_evlist__parse_sample(evlist, event, &sample); - if (err) { - fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err); - goto next_event; - } - - if (trace->base_time == 0) - trace->base_time = sample.time; - - if (type != PERF_RECORD_SAMPLE) { - trace__process_event(trace, &trace->host, event); - continue; - } - - evsel = perf_evlist__id2evsel(evlist, sample.id); - if (evsel == NULL) { - fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample.id); - goto next_event; - } - - if (sample.raw_data == NULL) { - fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n", - perf_evsel__name(evsel), sample.tid, - sample.cpu, sample.raw_size); - goto next_event; - } - - handler = evsel->handler.func; - handler(trace, evsel, &sample); -next_event: - perf_evlist__mmap_consume(evlist, i); - - if (done) - goto out_unmap_evlist; - } - } - - if (trace->nr_events == before) { - if (done) - goto out_unmap_evlist; - - poll(evlist->pollfd, evlist->nr_fds, -1); - } - - if (done) - perf_evlist__disable(evlist); - - goto again; - -out_unmap_evlist: - perf_evlist__munmap(evlist); -out_close_evlist: - perf_evlist__close(evlist); -out_delete_maps: - perf_evlist__delete_maps(evlist); -out_delete_evlist: - perf_evlist__delete(evlist); -out: - return err; -} - -static int trace__replay(struct trace *trace) -{ - const struct perf_evsel_str_handler handlers[] = { - { "raw_syscalls:sys_enter", trace__sys_enter, }, - { "raw_syscalls:sys_exit", trace__sys_exit, }, - }; - - struct perf_session *session; - int err = -1; - - trace->tool.sample = trace__process_sample; - trace->tool.mmap = perf_event__process_mmap; - trace->tool.mmap2 = perf_event__process_mmap2; - trace->tool.comm = perf_event__process_comm; - trace->tool.exit = perf_event__process_exit; - trace->tool.fork = perf_event__process_fork; - trace->tool.attr = perf_event__process_attr; - trace->tool.tracing_data = perf_event__process_tracing_data; - trace->tool.build_id = perf_event__process_build_id; - - trace->tool.ordered_samples = true; - trace->tool.ordering_requires_timestamps = true; - - /* add tid to output */ - trace->multiple_threads = true; - - if (symbol__init() < 0) - return -1; - - session = perf_session__new(input_name, O_RDONLY, 0, false, - &trace->tool); - if (session == NULL) - return -ENOMEM; - - err = perf_session__set_tracepoints_handlers(session, handlers); - if (err) - goto out; - - if (!perf_session__has_tp(session, "raw_syscalls:sys_enter")) { - pr_err("Data file does not have raw_syscalls:sys_enter events\n"); - goto out; - } - - if (!perf_session__has_tp(session, "raw_syscalls:sys_exit")) { - pr_err("Data file does not have raw_syscalls:sys_exit events\n"); - goto out; - } - - err = parse_target_str(trace); - if (err != 0) - goto out; - - setup_pager(); - - err = perf_session__process_events(session, &trace->tool); - if (err) - pr_err("Failed to process events, error %d", err); - -out: - perf_session__delete(session); - - return err; -} - -static size_t trace__fprintf_threads_header(FILE *fp) -{ - size_t printed; - - printed = fprintf(fp, "\n _____________________________________________________________________\n"); - printed += fprintf(fp," __) Summary of events (__\n\n"); - printed += fprintf(fp," [ task - pid ] [ events ] [ ratio ] [ runtime ]\n"); - printed += fprintf(fp," _____________________________________________________________________\n\n"); - - return printed; -} - -static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp) -{ - size_t printed = trace__fprintf_threads_header(fp); - struct rb_node *nd; - - for (nd = rb_first(&trace->host.threads); nd; nd = rb_next(nd)) { - struct thread *thread = rb_entry(nd, struct thread, rb_node); - struct thread_trace *ttrace = thread->priv; - const char *color; - double ratio; - - if (ttrace == NULL) - continue; - - ratio = (double)ttrace->nr_events / trace->nr_events * 100.0; - - color = PERF_COLOR_NORMAL; - if (ratio > 50.0) - color = PERF_COLOR_RED; - else if (ratio > 25.0) - color = PERF_COLOR_GREEN; - else if (ratio > 5.0) - color = PERF_COLOR_YELLOW; - - printed += color_fprintf(fp, color, "%20s", thread->comm); - printed += fprintf(fp, " - %-5d :%11lu [", thread->tid, ttrace->nr_events); - printed += color_fprintf(fp, color, "%5.1f%%", ratio); - printed += fprintf(fp, " ] %10.3f ms\n", ttrace->runtime_ms); - } - - return printed; -} - -static int trace__set_duration(const struct option *opt, const char *str, - int unset __maybe_unused) -{ - struct trace *trace = opt->value; - - trace->duration_filter = atof(str); - return 0; -} - -static int trace__open_output(struct trace *trace, const char *filename) -{ - struct stat st; - - if (!stat(filename, &st) && st.st_size) { - char oldname[PATH_MAX]; - - scnprintf(oldname, sizeof(oldname), "%s.old", filename); - unlink(oldname); - rename(filename, oldname); - } - - trace->output = fopen(filename, "w"); - - return trace->output == NULL ? -errno : 0; -} - -int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused) -{ - const char * const trace_usage[] = { - "perf trace [<options>] [<command>]", - "perf trace [<options>] -- <command> [<options>]", - NULL - }; - struct trace trace = { - .audit_machine = audit_detect_machine(), - .syscalls = { - . max = -1, - }, - .opts = { - .target = { - .uid = UINT_MAX, - .uses_mmap = true, - }, - .user_freq = UINT_MAX, - .user_interval = ULLONG_MAX, - .no_delay = true, - .mmap_pages = 1024, - }, - .output = stdout, - }; - const char *output_name = NULL; - const char *ev_qualifier_str = NULL; - const struct option trace_options[] = { - OPT_STRING('e', "expr", &ev_qualifier_str, "expr", - "list of events to trace"), - OPT_STRING('o', "output", &output_name, "file", "output file name"), - OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"), - OPT_STRING('p', "pid", &trace.opts.target.pid, "pid", - "trace events on existing process id"), - OPT_STRING('t', "tid", &trace.opts.target.tid, "tid", - "trace events on existing thread id"), - OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide, - "system-wide collection from all CPUs"), - OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu", - "list of cpus to monitor"), - OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit, - "child tasks do not inherit counters"), - OPT_UINTEGER('m', "mmap-pages", &trace.opts.mmap_pages, - "number of mmap data pages"), - OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user", - "user to profile"), - OPT_CALLBACK(0, "duration", &trace, "float", - "show only events with duration > N.M ms", - trace__set_duration), - OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"), - OPT_INCR('v', "verbose", &verbose, "be more verbose"), - OPT_END() - }; - int err; - char bf[BUFSIZ]; - - argc = parse_options(argc, argv, trace_options, trace_usage, 0); - - if (output_name != NULL) { - err = trace__open_output(&trace, output_name); - if (err < 0) { - perror("failed to create output file"); - goto out; - } - } - - if (ev_qualifier_str != NULL) { - const char *s = ev_qualifier_str; - - trace.not_ev_qualifier = *s == '!'; - if (trace.not_ev_qualifier) - ++s; - trace.ev_qualifier = strlist__new(true, s); - if (trace.ev_qualifier == NULL) { - fputs("Not enough memory to parse event qualifier", - trace.output); - err = -ENOMEM; - goto out_close; - } - } - - err = perf_target__validate(&trace.opts.target); - if (err) { - perf_target__strerror(&trace.opts.target, err, bf, sizeof(bf)); - fprintf(trace.output, "%s", bf); - goto out_close; - } - - err = perf_target__parse_uid(&trace.opts.target); - if (err) { - perf_target__strerror(&trace.opts.target, err, bf, sizeof(bf)); - fprintf(trace.output, "%s", bf); - goto out_close; - } - - if (!argc && perf_target__none(&trace.opts.target)) - trace.opts.target.system_wide = true; - - if (input_name) - err = trace__replay(&trace); - else - err = trace__run(&trace, argc, argv); - - if (trace.sched && !err) - trace__fprintf_thread_summary(&trace, trace.output); - -out_close: - if (output_name != NULL) - fclose(trace.output); -out: - return err; -} |