diff options
| -rw-r--r-- | tools/perf/Documentation/perf-sched.txt | 25 | ||||
| -rw-r--r-- | tools/perf/Documentation/perf-trace.txt | 25 | ||||
| -rw-r--r-- | tools/perf/Makefile | 1 | ||||
| -rw-r--r-- | tools/perf/builtin-sched.c | 297 | ||||
| -rw-r--r-- | tools/perf/builtin.h | 5 | ||||
| -rw-r--r-- | tools/perf/command-list.txt | 2 | ||||
| -rw-r--r-- | tools/perf/perf.c | 1 |
7 files changed, 354 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-sched.txt b/tools/perf/Documentation/perf-sched.txt new file mode 100644 index 00000000000..056320eecb3 --- /dev/null +++ b/tools/perf/Documentation/perf-sched.txt @@ -0,0 +1,25 @@ +perf-sched(1) +============== + +NAME +---- +perf-sched - Read perf.data (created by perf record) and display sched output + +SYNOPSIS +-------- +[verse] +'perf sched' [-i <file> | --input=file] symbol_name + +DESCRIPTION +----------- +This command reads the input file and displays the latencies recorded. + +OPTIONS +------- +-D:: +--dump-raw-trace=:: + Display verbose dump of the sched data. + +SEE ALSO +-------- +linkperf:perf-record[1] diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt new file mode 100644 index 00000000000..41ed75398ca --- /dev/null +++ b/tools/perf/Documentation/perf-trace.txt @@ -0,0 +1,25 @@ +perf-trace(1) +============== + +NAME +---- +perf-trace - Read perf.data (created by perf record) and display trace output + +SYNOPSIS +-------- +[verse] +'perf trace' [-i <file> | --input=file] symbol_name + +DESCRIPTION +----------- +This command reads the input file and displays the trace recorded. + +OPTIONS +------- +-D:: +--dump-raw-trace=:: + Display verbose dump of the trace data. + +SEE ALSO +-------- +linkperf:perf-record[1] diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 9f8d207a91b..2cb8cc3f677 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -376,6 +376,7 @@ LIB_OBJS += util/trace-event-info.o BUILTIN_OBJS += builtin-annotate.o BUILTIN_OBJS += builtin-help.o +BUILTIN_OBJS += builtin-sched.o BUILTIN_OBJS += builtin-list.o BUILTIN_OBJS += builtin-record.o BUILTIN_OBJS += builtin-report.o diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c new file mode 100644 index 00000000000..60228d9179a --- /dev/null +++ b/tools/perf/builtin-sched.c @@ -0,0 +1,297 @@ +#include "builtin.h" + +#include "util/util.h" +#include "util/cache.h" +#include "util/symbol.h" +#include "util/thread.h" +#include "util/header.h" + +#include "util/parse-options.h" + +#include "perf.h" +#include "util/debug.h" + +#include "util/trace-event.h" + +static char const *input_name = "perf.data"; +static int input; +static unsigned long page_size; +static unsigned long mmap_window = 32; + +static unsigned long total = 0; +static unsigned long total_comm = 0; + +static struct rb_root threads; +static struct thread *last_match; + +static struct perf_header *header; +static u64 sample_type; + + +static int +process_comm_event(event_t *event, unsigned long offset, unsigned long head) +{ + struct thread *thread; + + thread = threads__findnew(event->comm.pid, &threads, &last_match); + + dump_printf("%p [%p]: PERF_EVENT_COMM: %s:%d\n", + (void *)(offset + head), + (void *)(long)(event->header.size), + event->comm.comm, event->comm.pid); + + if (thread == NULL || + thread__set_comm(thread, event->comm.comm)) { + dump_printf("problem processing PERF_EVENT_COMM, skipping event.\n"); + return -1; + } + total_comm++; + + return 0; +} + +static int +process_sample_event(event_t *event, unsigned long offset, unsigned long head) +{ + char level; + int show = 0; + struct dso *dso = NULL; + struct thread *thread; + u64 ip = event->ip.ip; + u64 timestamp = -1; + u32 cpu = -1; + u64 period = 1; + void *more_data = event->ip.__more_data; + int cpumode; + + thread = threads__findnew(event->ip.pid, &threads, &last_match); + + if (sample_type & PERF_SAMPLE_TIME) { + timestamp = *(u64 *)more_data; + more_data += sizeof(u64); + } + + if (sample_type & PERF_SAMPLE_CPU) { + cpu = *(u32 *)more_data; + more_data += sizeof(u32); + more_data += sizeof(u32); /* reserved */ + } + + if (sample_type & PERF_SAMPLE_PERIOD) { + period = *(u64 *)more_data; + more_data += sizeof(u64); + } + + dump_printf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", + (void *)(offset + head), + (void *)(long)(event->header.size), + event->header.misc, + event->ip.pid, event->ip.tid, + (void *)(long)ip, + (long long)period); + + dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); + + if (thread == NULL) { + eprintf("problem processing %d event, skipping it.\n", + event->header.type); + return -1; + } + + cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK; + + if (cpumode == PERF_EVENT_MISC_KERNEL) { + show = SHOW_KERNEL; + level = 'k'; + + dso = kernel_dso; + + dump_printf(" ...... dso: %s\n", dso->name); + + } else if (cpumode == PERF_EVENT_MISC_USER) { + + show = SHOW_USER; + level = '.'; + + } else { + show = SHOW_HV; + level = 'H'; + + dso = hypervisor_dso; + + dump_printf(" ...... dso: [hypervisor]\n"); + } + + if (sample_type & PERF_SAMPLE_RAW) { + struct { + u32 size; + char data[0]; + } *raw = more_data; + + /* + * FIXME: better resolve from pid from the struct trace_entry + * field, although it should be the same than this perf + * event pid + */ + print_event(cpu, raw->data, raw->size, timestamp, thread->comm); + } + total += period; + + return 0; +} + +static int +process_event(event_t *event, unsigned long offset, unsigned long head) +{ + trace_event(event); + + switch (event->header.type) { + case PERF_EVENT_MMAP ... PERF_EVENT_LOST: + return 0; + + case PERF_EVENT_COMM: + return process_comm_event(event, offset, head); + + case PERF_EVENT_EXIT ... PERF_EVENT_READ: + return 0; + + case PERF_EVENT_SAMPLE: + return process_sample_event(event, offset, head); + + case PERF_EVENT_MAX: + default: + return -1; + } + + return 0; +} + +static int __cmd_sched(void) +{ + int ret, rc = EXIT_FAILURE; + unsigned long offset = 0; + unsigned long head = 0; + struct stat perf_stat; + event_t *event; + uint32_t size; + char *buf; + + trace_report(); + register_idle_thread(&threads, &last_match); + + input = open(input_name, O_RDONLY); + if (input < 0) { + perror("failed to open file"); + exit(-1); + } + + ret = fstat(input, &perf_stat); + if (ret < 0) { + perror("failed to stat file"); + exit(-1); + } + + if (!perf_stat.st_size) { + fprintf(stderr, "zero-sized file, nothing to do!\n"); + exit(0); + } + header = perf_header__read(input); + head = header->data_offset; + sample_type = perf_header__sample_type(header); + + if (!(sample_type & PERF_SAMPLE_RAW)) + die("No trace sample to read. Did you call perf record " + "without -R?"); + + if (load_kernel() < 0) { + perror("failed to load kernel symbols"); + return EXIT_FAILURE; + } + +remap: + buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ, + MAP_SHARED, input, offset); + if (buf == MAP_FAILED) { + perror("failed to mmap file"); + exit(-1); + } + +more: + event = (event_t *)(buf + head); + + size = event->header.size; + if (!size) + size = 8; + + if (head + event->header.size >= page_size * mmap_window) { + unsigned long shift = page_size * (head / page_size); + int res; + + res = munmap(buf, page_size * mmap_window); + assert(res == 0); + + offset += shift; + head -= shift; + goto remap; + } + + size = event->header.size; + + + if (!size || process_event(event, offset, head) < 0) { + + /* + * assume we lost track of the stream, check alignment, and + * increment a single u64 in the hope to catch on again 'soon'. + */ + + if (unlikely(head & 7)) + head &= ~7ULL; + + size = 8; + } + + head += size; + + if (offset + head < (unsigned long)perf_stat.st_size) + goto more; + + rc = EXIT_SUCCESS; + close(input); + + return rc; +} + +static const char * const annotate_usage[] = { + "perf trace [<options>] <command>", + NULL +}; + +static const struct option options[] = { + OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, + "dump raw trace in ASCII"), + OPT_BOOLEAN('v', "verbose", &verbose, + "be more verbose (show symbol address, etc)"), + OPT_END() +}; + +int cmd_sched(int argc, const char **argv, const char *prefix __used) +{ + symbol__init(); + page_size = getpagesize(); + + argc = parse_options(argc, argv, options, annotate_usage, 0); + if (argc) { + /* + * Special case: if there's an argument left then assume tha + * it's a symbol filter: + */ + if (argc > 1) + usage_with_options(annotate_usage, options); + } + + + setup_pager(); + + return __cmd_sched(); +} diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h index 3a63e41fb44..b09cadbd76b 100644 --- a/tools/perf/builtin.h +++ b/tools/perf/builtin.h @@ -16,12 +16,13 @@ extern int check_pager_config(const char *cmd); extern int cmd_annotate(int argc, const char **argv, const char *prefix); extern int cmd_help(int argc, const char **argv, const char *prefix); +extern int cmd_sched(int argc, const char **argv, const char *prefix); +extern int cmd_list(int argc, const char **argv, const char *prefix); extern int cmd_record(int argc, const char **argv, const char *prefix); extern int cmd_report(int argc, const char **argv, const char *prefix); extern int cmd_stat(int argc, const char **argv, const char *prefix); extern int cmd_top(int argc, const char **argv, const char *prefix); -extern int cmd_version(int argc, const char **argv, const char *prefix); -extern int cmd_list(int argc, const char **argv, const char *prefix); extern int cmd_trace(int argc, const char **argv, const char *prefix); +extern int cmd_version(int argc, const char **argv, const char *prefix); #endif diff --git a/tools/perf/command-list.txt b/tools/perf/command-list.txt index eebce30afbc..3133c74729d 100644 --- a/tools/perf/command-list.txt +++ b/tools/perf/command-list.txt @@ -4,7 +4,9 @@ # perf-annotate mainporcelain common perf-list mainporcelain common +perf-sched mainporcelain common perf-record mainporcelain common perf-report mainporcelain common perf-stat mainporcelain common perf-top mainporcelain common +perf-trace mainporcelain common diff --git a/tools/perf/perf.c b/tools/perf/perf.c index fe4589dde95..c972d1c3548 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -293,6 +293,7 @@ static void handle_internal_command(int argc, const char **argv) { "annotate", cmd_annotate, 0 }, { "version", cmd_version, 0 }, { "trace", cmd_trace, 0 }, + { "sched", cmd_sched, 0 }, }; unsigned int i; static const char ext[] = STRIP_EXTENSION; |