diff options
author | Andi Kleen | 2020-01-07 13:04:44 -0800 |
---|---|---|
committer | Arnaldo Carvalho de Melo | 2020-01-14 12:02:19 -0300 |
commit | 3b0b16bf8cb92ae67968c1abb7b335032b899b33 (patch) | |
tree | 6c724fc2c5ffce436e1c86ba9bc1a801c66d9e9d /tools/perf | |
parent | aa9d1f8334dfe220aff58c6bb4daf1fdae81add6 (diff) |
perf tools: Support --prefix/--prefix-strip
The objdump utility has useful --prefix / --prefix-strip options to
allow changing source code file names hardcoded into executables' debug
info. Add options to 'perf report', 'perf top' and 'perf annotate',
which are then passed to objdump.
$ mkdir foo
$ echo 'main() { for (;;); }' > foo/foo.c
$ gcc -g foo/foo.c
foo/foo.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
1 | main() { for (;;); }
| ^~~~
$ perf record ./a.out
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.230 MB perf.data (5721 samples) ]
$ mv foo bar
$ perf annotate
<does not show source code>
$ perf annotate --prefix=/home/ak/lsrc/git/bar --prefix-strip=5
<does show source code>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
LPU-Reference: 20200107210444.214071-1-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/Documentation/perf-annotate.txt | 6 | ||||
-rw-r--r-- | tools/perf/Documentation/perf-report.txt | 6 | ||||
-rw-r--r-- | tools/perf/Documentation/perf-top.txt | 6 | ||||
-rw-r--r-- | tools/perf/builtin-annotate.c | 7 | ||||
-rw-r--r-- | tools/perf/builtin-report.c | 7 | ||||
-rw-r--r-- | tools/perf/builtin-top.c | 7 | ||||
-rw-r--r-- | tools/perf/util/annotate.c | 19 | ||||
-rw-r--r-- | tools/perf/util/annotate.h | 5 |
8 files changed, 61 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt index e8c972f89357..1b5042f134a8 100644 --- a/tools/perf/Documentation/perf-annotate.txt +++ b/tools/perf/Documentation/perf-annotate.txt @@ -112,6 +112,12 @@ OPTIONS --objdump=<path>:: Path to objdump binary. +--prefix=PREFIX:: +--prefix-strip=N:: + Remove first N entries from source file path names in executables + and add PREFIX. This allows to display source code compiled on systems + with different file system layout. + --skip-missing:: Skip symbols that cannot be annotated. diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 8dbe2119686a..db61f16ffa56 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -367,6 +367,12 @@ OPTIONS --objdump=<path>:: Path to objdump binary. +--prefix=PREFIX:: +--prefix-strip=N:: + Remove first N entries from source file path names in executables + and add PREFIX. This allows to display source code compiled on systems + with different file system layout. + --group:: Show event group information together. It forces group output also if there are no groups defined in data file. diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index 5596129a71cf..324b6b53c86b 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -158,6 +158,12 @@ Default is to monitor all CPUS. -M:: --disassembler-style=:: Set disassembler style for objdump. +--prefix=PREFIX:: +--prefix-strip=N:: + Remove first N entries from source file path names in executables + and add PREFIX. This allows to display source code compiled on systems + with different file system layout. + --source:: Interleave source code with assembly code. Enabled by default, disable with --no-source. diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 5898662bc8fb..ff61795a4d13 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -535,6 +535,10 @@ int cmd_annotate(int argc, const char **argv) "Display raw encoding of assembly instructions (default)"), OPT_STRING('M', "disassembler-style", &annotate.opts.disassembler_style, "disassembler style", "Specify disassembler style (e.g. -M intel for intel syntax)"), + OPT_STRING(0, "prefix", &annotate.opts.prefix, "prefix", + "Add prefix to source file path names in programs (with --prefix-strip)"), + OPT_STRING(0, "prefix-strip", &annotate.opts.prefix_strip, "N", + "Strip first N entries of source file path name in programs (with --prefix)"), OPT_STRING(0, "objdump", &annotate.opts.objdump_path, "path", "objdump binary to use for disassembly and annotations"), OPT_BOOLEAN(0, "group", &symbol_conf.event_group, @@ -574,6 +578,9 @@ int cmd_annotate(int argc, const char **argv) annotate.sym_hist_filter = argv[0]; } + if (annotate_check_args(&annotate.opts) < 0) + return -EINVAL; + if (symbol_conf.show_nr_samples && annotate.use_gtk) { pr_err("--show-nr-samples is not available in --gtk mode at this time\n"); return ret; diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 3048c1b95b4c..627bb6570988 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -1208,6 +1208,10 @@ int cmd_report(int argc, const char **argv) "Display raw encoding of assembly instructions (default)"), OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style", "Specify disassembler style (e.g. -M intel for intel syntax)"), + OPT_STRING(0, "prefix", &report.annotation_opts.prefix, "prefix", + "Add prefix to source file path names in programs (with --prefix-strip)"), + OPT_STRING(0, "prefix-strip", &report.annotation_opts.prefix_strip, "N", + "Strip first N entries of source file path name in programs (with --prefix)"), OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period, "Show a column with the sum of periods"), OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set, @@ -1287,6 +1291,9 @@ int cmd_report(int argc, const char **argv) report.symbol_filter_str = argv[0]; } + if (annotate_check_args(&report.annotation_opts) < 0) + return -EINVAL; + if (report.mmaps_mode) report.tasks_mode = true; diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 795e353de095..8affcab75604 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1512,6 +1512,10 @@ int cmd_top(int argc, const char **argv) "objdump binary to use for disassembly and annotations"), OPT_STRING('M', "disassembler-style", &top.annotation_opts.disassembler_style, "disassembler style", "Specify disassembler style (e.g. -M intel for intel syntax)"), + OPT_STRING(0, "prefix", &top.annotation_opts.prefix, "prefix", + "Add prefix to source file path names in programs (with --prefix-strip)"), + OPT_STRING(0, "prefix-strip", &top.annotation_opts.prefix_strip, "N", + "Strip first N entries of source file path name in programs (with --prefix)"), OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"), OPT_CALLBACK(0, "percent-limit", &top, "percent", "Don't show entries under that percent", parse_percent_limit), @@ -1582,6 +1586,9 @@ int cmd_top(int argc, const char **argv) if (argc) usage_with_options(top_usage, options); + if (annotate_check_args(&top.annotation_opts) < 0) + goto out_delete_evlist; + if (!top.evlist->core.nr_entries && perf_evlist__add_default(top.evlist) < 0) { pr_err("Not enough memory for event selector list\n"); diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index f5e77ed237e8..ca73fb74ad03 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -1966,14 +1966,20 @@ static int symbol__disassemble(struct symbol *sym, struct annotate_args *args) err = asprintf(&command, "%s %s%s --start-address=0x%016" PRIx64 " --stop-address=0x%016" PRIx64 - " -l -d %s %s -C \"$1\"", + " -l -d %s %s %s %c%s%c %s%s -C \"$1\"", opts->objdump_path ?: "objdump", opts->disassembler_style ? "-M " : "", opts->disassembler_style ?: "", map__rip_2objdump(map, sym->start), map__rip_2objdump(map, sym->end), opts->show_asm_raw ? "" : "--no-show-raw-insn", - opts->annotate_src ? "-S" : ""); + opts->annotate_src ? "-S" : "", + opts->prefix ? "--prefix " : "", + opts->prefix ? '"' : ' ', + opts->prefix ?: "", + opts->prefix ? '"' : ' ', + opts->prefix_strip ? "--prefix-strip=" : "", + opts->prefix_strip ?: ""); if (err < 0) { pr_err("Failure allocating memory for the command to run\n"); @@ -3204,3 +3210,12 @@ out: free(str1); return err; } + +int annotate_check_args(struct annotation_options *args) +{ + if (args->prefix_strip && !args->prefix) { + pr_err("--prefix-strip requires --prefix\n"); + return -1; + } + return 0; +} diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index 7075d98f69d9..455403e8fede 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -94,6 +94,8 @@ struct annotation_options { int context; const char *objdump_path; const char *disassembler_style; + const char *prefix; + const char *prefix_strip; unsigned int percent_type; }; @@ -415,4 +417,7 @@ void annotation_config__init(void); int annotate_parse_percent_type(const struct option *opt, const char *_str, int unset); + +int annotate_check_args(struct annotation_options *args); + #endif /* __PERF_ANNOTATE_H */ |