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perf buildid-list: New plumbing command
With this we can list the buildids in a perf.data file so that we can pipe them to other, distro specific tools that from the buildids can figure out separate packages (foo-debuginfo) where we can find the matching symtabs so that perf report can do its job. E.g: [acme@doppio linux-2.6-tip]$ perf buildid-list | head -5 8e08b117e5458ad3f85da16d42d0fc5cd21c5869 520c2387a587cc5acfcf881e27dba1caaeab4b1f ec8dd400904ddfcac8b1c343263a790f977159dc 7caedbca5a6d8ab39a7fe44bd28c07d3e14a3f3f 379bb828fd08859dbea73279f04abefabc95a6a3 [acme@doppio linux-2.6-tip]$ perf buildid-list -v | head -5 8e08b117e5458ad3f85da16d42d0fc5cd21c5869 /sbin/init 520c2387a587cc5acfcf881e27dba1caaeab4b1f /lib64/ld-2.10.1.so ec8dd400904ddfcac8b1c343263a790f977159dc /lib64/libc-2.10.1.so 7caedbca5a6d8ab39a7fe44bd28c07d3e14a3f3f /sbin/udevd 379bb828fd08859dbea73279f04abefabc95a6a3 /lib64/libdl-2.10.1.so [acme@doppio linux-2.6-tip]$ Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1258396365-29217-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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34
tools/perf/Documentation/perf-buildid-list.txt
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34
tools/perf/Documentation/perf-buildid-list.txt
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@ -0,0 +1,34 @@
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perf-buildid-list(1)
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====================
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NAME
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----
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perf-buildid-list - List the buildids in a perf.data file
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SYNOPSIS
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--------
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[verse]
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'perf buildid-list <options>'
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DESCRIPTION
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-----------
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This command displays the buildids found in a perf.data file, so that other
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tools can be used to fetch packages with matching symbol tables for use by
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perf report.
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OPTIONS
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-------
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-i::
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--input=::
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Input file name. (default: perf.data)
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-f::
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--force::
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Don't do ownership validation.
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-v::
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--verbose::
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Be more verbose, showing the name of the DSOs after the buildids.
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SEE ALSO
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--------
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linkperf:perf-record[1], linkperf:perf-top[1],
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linkperf:perf-report[1]
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@ -430,6 +430,7 @@ BUILTIN_OBJS += bench/sched-pipe.o
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BUILTIN_OBJS += builtin-help.o
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BUILTIN_OBJS += builtin-help.o
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BUILTIN_OBJS += builtin-sched.o
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BUILTIN_OBJS += builtin-sched.o
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BUILTIN_OBJS += builtin-buildid-list.o
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BUILTIN_OBJS += builtin-list.o
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BUILTIN_OBJS += builtin-list.o
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BUILTIN_OBJS += builtin-record.o
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BUILTIN_OBJS += builtin-record.o
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BUILTIN_OBJS += builtin-report.o
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BUILTIN_OBJS += builtin-report.o
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116
tools/perf/builtin-buildid-list.c
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116
tools/perf/builtin-buildid-list.c
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/*
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* builtin-buildid-list.c
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*
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* Builtin buildid-list command: list buildids in perf.data
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*
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* Copyright (C) 2009, Red Hat Inc.
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* Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
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*/
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#include "builtin.h"
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#include "perf.h"
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#include "util/cache.h"
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#include "util/data_map.h"
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#include "util/debug.h"
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#include "util/header.h"
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#include "util/parse-options.h"
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#include "util/symbol.h"
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static char const *input_name = "perf.data";
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static int force;
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static const char *const buildid_list_usage[] = {
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"perf report [<options>]",
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NULL
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};
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static const struct option options[] = {
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OPT_STRING('i', "input", &input_name, "file",
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"input file name"),
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OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
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OPT_BOOLEAN('v', "verbose", &verbose,
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"be more verbose (show counter open errors, etc)"),
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OPT_END()
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};
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static int perf_file_section__process_buildids(struct perf_file_section *self,
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int feat, int fd)
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{
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if (feat != HEADER_BUILD_ID)
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return 0;
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if (lseek(fd, self->offset, SEEK_SET) < 0) {
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pr_warning("Failed to lseek to %Ld offset for buildids!\n",
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self->offset);
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return -1;
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}
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if (perf_header__read_build_ids(fd, self->offset, self->size)) {
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pr_warning("Failed to read buildids!\n");
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return -1;
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}
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return 0;
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}
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static int __cmd_buildid_list(void)
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{
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int err = -1;
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struct perf_header *header;
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struct perf_file_header f_header;
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struct stat input_stat;
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int input = open(input_name, O_RDONLY);
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if (input < 0) {
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pr_err("failed to open file: %s", input_name);
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if (!strcmp(input_name, "perf.data"))
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pr_err(" (try 'perf record' first)");
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pr_err("\n");
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goto out;
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}
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err = fstat(input, &input_stat);
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if (err < 0) {
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perror("failed to stat file");
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goto out_close;
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}
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if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) {
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pr_err("file %s not owned by current user or root\n",
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input_name);
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goto out_close;
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}
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if (!input_stat.st_size) {
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pr_info("zero-sized file, nothing to do!\n");
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goto out_close;
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}
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err = -1;
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header = perf_header__new();
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if (header == NULL)
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goto out_close;
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if (perf_file_header__read(&f_header, header, input) < 0) {
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pr_warning("incompatible file format");
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goto out_close;
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}
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err = perf_header__process_sections(header, input,
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perf_file_section__process_buildids);
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if (err < 0)
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goto out_close;
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dsos__fprintf_buildid(stdout);
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out_close:
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close(input);
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out:
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return err;
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}
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int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
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{
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argc = parse_options(argc, argv, options, buildid_list_usage, 0);
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setup_pager();
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return __cmd_buildid_list();
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}
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@ -16,6 +16,7 @@ extern int check_pager_config(const char *cmd);
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extern int cmd_annotate(int argc, const char **argv, const char *prefix);
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extern int cmd_annotate(int argc, const char **argv, const char *prefix);
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extern int cmd_bench(int argc, const char **argv, const char *prefix);
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extern int cmd_bench(int argc, const char **argv, const char *prefix);
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extern int cmd_buildid_list(int argc, const char **argv, const char *prefix);
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extern int cmd_help(int argc, const char **argv, const char *prefix);
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extern int cmd_help(int argc, const char **argv, const char *prefix);
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extern int cmd_sched(int argc, const char **argv, const char *prefix);
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extern int cmd_sched(int argc, const char **argv, const char *prefix);
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extern int cmd_list(int argc, const char **argv, const char *prefix);
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extern int cmd_list(int argc, const char **argv, const char *prefix);
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@ -4,6 +4,7 @@
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#
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#
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perf-annotate mainporcelain common
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perf-annotate mainporcelain common
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perf-bench mainporcelain common
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perf-bench mainporcelain common
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perf-buildid-list mainporcelain common
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perf-list mainporcelain common
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perf-list mainporcelain common
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perf-sched mainporcelain common
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perf-sched mainporcelain common
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perf-record mainporcelain common
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perf-record mainporcelain common
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@ -287,6 +287,7 @@ static void handle_internal_command(int argc, const char **argv)
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static struct cmd_struct commands[] = {
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static struct cmd_struct commands[] = {
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{ "help", cmd_help, 0 },
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{ "help", cmd_help, 0 },
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{ "list", cmd_list, 0 },
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{ "list", cmd_list, 0 },
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{ "buildid-list", cmd_buildid_list, 0 },
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{ "record", cmd_record, 0 },
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{ "record", cmd_record, 0 },
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{ "report", cmd_report, 0 },
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{ "report", cmd_report, 0 },
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{ "bench", cmd_bench, 0 },
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{ "bench", cmd_bench, 0 },
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