![Akihiro Nagai](/assets/img/avatar_default.png)
Add the option get the path of [kernel.kallsyms]. Specify '--show-kernel-path' option to use this function. This patch enables other applications to use this output easily. Without --show-kernel-path option ffffffff81467612 irq_return ([kernel.kallsyms]) ffffffff81467612 irq_return ([kernel.kallsyms]) 7f24fc02a6b3 _start (/lib64/ld-2.14.so) [snip] With --show-kernel-path option ffffffff81467612 irq_return (/lib/modules/3.2.0+/build/vmlinux) ffffffff81467612 irq_return (/lib/modules/3.2.0+/build/vmlinux) 7f24fc02a6b3 _start (/lib64/ld-2.14.so) [snip] Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20120130044320.2384.73322.stgit@linux3 Signed-off-by: Akihiro Nagai <akihiro.nagai.hw@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1410 lines
33 KiB
C
1410 lines
33 KiB
C
#include "builtin.h"
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#include "perf.h"
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#include "util/cache.h"
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#include "util/debug.h"
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#include "util/exec_cmd.h"
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#include "util/header.h"
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#include "util/parse-options.h"
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#include "util/session.h"
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#include "util/tool.h"
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#include "util/symbol.h"
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#include "util/thread.h"
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#include "util/trace-event.h"
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#include "util/util.h"
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#include "util/evlist.h"
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#include "util/evsel.h"
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#include <linux/bitmap.h>
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static char const *script_name;
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static char const *generate_script_lang;
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static bool debug_mode;
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static u64 last_timestamp;
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static u64 nr_unordered;
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extern const struct option record_options[];
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static bool no_callchain;
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static bool show_full_info;
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static bool system_wide;
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static const char *cpu_list;
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static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
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enum perf_output_field {
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PERF_OUTPUT_COMM = 1U << 0,
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PERF_OUTPUT_TID = 1U << 1,
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PERF_OUTPUT_PID = 1U << 2,
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PERF_OUTPUT_TIME = 1U << 3,
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PERF_OUTPUT_CPU = 1U << 4,
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PERF_OUTPUT_EVNAME = 1U << 5,
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PERF_OUTPUT_TRACE = 1U << 6,
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PERF_OUTPUT_IP = 1U << 7,
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PERF_OUTPUT_SYM = 1U << 8,
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PERF_OUTPUT_DSO = 1U << 9,
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PERF_OUTPUT_ADDR = 1U << 10,
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PERF_OUTPUT_SYMOFFSET = 1U << 11,
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};
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struct output_option {
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const char *str;
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enum perf_output_field field;
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} all_output_options[] = {
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{.str = "comm", .field = PERF_OUTPUT_COMM},
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{.str = "tid", .field = PERF_OUTPUT_TID},
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{.str = "pid", .field = PERF_OUTPUT_PID},
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{.str = "time", .field = PERF_OUTPUT_TIME},
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{.str = "cpu", .field = PERF_OUTPUT_CPU},
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{.str = "event", .field = PERF_OUTPUT_EVNAME},
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{.str = "trace", .field = PERF_OUTPUT_TRACE},
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{.str = "ip", .field = PERF_OUTPUT_IP},
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{.str = "sym", .field = PERF_OUTPUT_SYM},
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{.str = "dso", .field = PERF_OUTPUT_DSO},
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{.str = "addr", .field = PERF_OUTPUT_ADDR},
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{.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
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};
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/* default set to maintain compatibility with current format */
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static struct {
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bool user_set;
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bool wildcard_set;
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u64 fields;
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u64 invalid_fields;
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} output[PERF_TYPE_MAX] = {
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[PERF_TYPE_HARDWARE] = {
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.user_set = false,
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.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
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PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
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PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
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PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
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.invalid_fields = PERF_OUTPUT_TRACE,
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},
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[PERF_TYPE_SOFTWARE] = {
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.user_set = false,
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.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
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PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
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PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
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PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
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.invalid_fields = PERF_OUTPUT_TRACE,
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},
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[PERF_TYPE_TRACEPOINT] = {
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.user_set = false,
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.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
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PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
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PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE,
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},
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[PERF_TYPE_RAW] = {
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.user_set = false,
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.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
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PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
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PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
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PERF_OUTPUT_SYM | PERF_OUTPUT_DSO,
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.invalid_fields = PERF_OUTPUT_TRACE,
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},
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};
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static bool output_set_by_user(void)
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{
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int j;
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for (j = 0; j < PERF_TYPE_MAX; ++j) {
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if (output[j].user_set)
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return true;
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}
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return false;
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}
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static const char *output_field2str(enum perf_output_field field)
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{
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int i, imax = ARRAY_SIZE(all_output_options);
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const char *str = "";
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for (i = 0; i < imax; ++i) {
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if (all_output_options[i].field == field) {
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str = all_output_options[i].str;
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break;
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}
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}
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return str;
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}
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#define PRINT_FIELD(x) (output[attr->type].fields & PERF_OUTPUT_##x)
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static int perf_event_attr__check_stype(struct perf_event_attr *attr,
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u64 sample_type, const char *sample_msg,
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enum perf_output_field field)
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{
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int type = attr->type;
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const char *evname;
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if (attr->sample_type & sample_type)
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return 0;
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if (output[type].user_set) {
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evname = __event_name(attr->type, attr->config);
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pr_err("Samples for '%s' event do not have %s attribute set. "
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"Cannot print '%s' field.\n",
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evname, sample_msg, output_field2str(field));
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return -1;
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}
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/* user did not ask for it explicitly so remove from the default list */
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output[type].fields &= ~field;
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evname = __event_name(attr->type, attr->config);
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pr_debug("Samples for '%s' event do not have %s attribute set. "
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"Skipping '%s' field.\n",
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evname, sample_msg, output_field2str(field));
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return 0;
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}
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static int perf_evsel__check_attr(struct perf_evsel *evsel,
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struct perf_session *session)
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{
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struct perf_event_attr *attr = &evsel->attr;
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if (PRINT_FIELD(TRACE) &&
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!perf_session__has_traces(session, "record -R"))
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return -EINVAL;
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if (PRINT_FIELD(IP)) {
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if (perf_event_attr__check_stype(attr, PERF_SAMPLE_IP, "IP",
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PERF_OUTPUT_IP))
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return -EINVAL;
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if (!no_callchain &&
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!(attr->sample_type & PERF_SAMPLE_CALLCHAIN))
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symbol_conf.use_callchain = false;
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}
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if (PRINT_FIELD(ADDR) &&
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perf_event_attr__check_stype(attr, PERF_SAMPLE_ADDR, "ADDR",
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PERF_OUTPUT_ADDR))
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return -EINVAL;
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if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
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pr_err("Display of symbols requested but neither sample IP nor "
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"sample address\nis selected. Hence, no addresses to convert "
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"to symbols.\n");
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return -EINVAL;
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}
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if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
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pr_err("Display of offsets requested but symbol is not"
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"selected.\n");
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return -EINVAL;
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}
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if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
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pr_err("Display of DSO requested but neither sample IP nor "
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"sample address\nis selected. Hence, no addresses to convert "
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"to DSO.\n");
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return -EINVAL;
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}
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if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
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perf_event_attr__check_stype(attr, PERF_SAMPLE_TID, "TID",
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PERF_OUTPUT_TID|PERF_OUTPUT_PID))
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return -EINVAL;
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if (PRINT_FIELD(TIME) &&
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perf_event_attr__check_stype(attr, PERF_SAMPLE_TIME, "TIME",
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PERF_OUTPUT_TIME))
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return -EINVAL;
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if (PRINT_FIELD(CPU) &&
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perf_event_attr__check_stype(attr, PERF_SAMPLE_CPU, "CPU",
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PERF_OUTPUT_CPU))
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return -EINVAL;
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return 0;
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}
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/*
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* verify all user requested events exist and the samples
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* have the expected data
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*/
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static int perf_session__check_output_opt(struct perf_session *session)
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{
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int j;
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struct perf_evsel *evsel;
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for (j = 0; j < PERF_TYPE_MAX; ++j) {
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evsel = perf_session__find_first_evtype(session, j);
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/*
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* even if fields is set to 0 (ie., show nothing) event must
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* exist if user explicitly includes it on the command line
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*/
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if (!evsel && output[j].user_set && !output[j].wildcard_set) {
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pr_err("%s events do not exist. "
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"Remove corresponding -f option to proceed.\n",
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event_type(j));
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return -1;
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}
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if (evsel && output[j].fields &&
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perf_evsel__check_attr(evsel, session))
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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 void print_sample_start(struct perf_sample *sample,
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struct thread *thread,
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struct perf_event_attr *attr)
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{
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int type;
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struct event *event;
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const char *evname = NULL;
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unsigned long secs;
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unsigned long usecs;
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unsigned long long nsecs;
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if (PRINT_FIELD(COMM)) {
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if (latency_format)
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printf("%8.8s ", thread->comm);
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else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
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printf("%s ", thread->comm);
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else
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printf("%16s ", thread->comm);
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}
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if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
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printf("%5d/%-5d ", sample->pid, sample->tid);
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else if (PRINT_FIELD(PID))
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printf("%5d ", sample->pid);
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else if (PRINT_FIELD(TID))
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printf("%5d ", sample->tid);
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if (PRINT_FIELD(CPU)) {
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if (latency_format)
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printf("%3d ", sample->cpu);
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else
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printf("[%03d] ", sample->cpu);
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}
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if (PRINT_FIELD(TIME)) {
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nsecs = sample->time;
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secs = nsecs / NSECS_PER_SEC;
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nsecs -= secs * NSECS_PER_SEC;
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usecs = nsecs / NSECS_PER_USEC;
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printf("%5lu.%06lu: ", secs, usecs);
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}
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if (PRINT_FIELD(EVNAME)) {
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if (attr->type == PERF_TYPE_TRACEPOINT) {
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type = trace_parse_common_type(sample->raw_data);
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event = trace_find_event(type);
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if (event)
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evname = event->name;
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} else
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evname = __event_name(attr->type, attr->config);
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printf("%s: ", evname ? evname : "[unknown]");
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}
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}
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static bool is_bts_event(struct perf_event_attr *attr)
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{
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return ((attr->type == PERF_TYPE_HARDWARE) &&
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(attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
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(attr->sample_period == 1));
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}
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static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
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{
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if ((attr->type == PERF_TYPE_SOFTWARE) &&
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((attr->config == PERF_COUNT_SW_PAGE_FAULTS) ||
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(attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) ||
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(attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
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return true;
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if (is_bts_event(attr))
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return true;
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return false;
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}
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static void print_sample_addr(union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine,
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struct thread *thread,
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struct perf_event_attr *attr)
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{
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struct addr_location al;
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u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
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printf("%16" PRIx64, sample->addr);
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if (!sample_addr_correlates_sym(attr))
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return;
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thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
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sample->addr, &al);
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if (!al.map)
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thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE,
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sample->addr, &al);
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al.cpu = sample->cpu;
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al.sym = NULL;
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if (al.map)
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al.sym = map__find_symbol(al.map, al.addr, NULL);
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if (PRINT_FIELD(SYM)) {
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printf(" ");
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if (PRINT_FIELD(SYMOFFSET))
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symbol__fprintf_symname_offs(al.sym, &al, stdout);
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else
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symbol__fprintf_symname(al.sym, stdout);
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}
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if (PRINT_FIELD(DSO)) {
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printf(" (");
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map__fprintf_dsoname(al.map, stdout);
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printf(")");
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}
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}
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static void print_sample_bts(union perf_event *event,
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struct perf_sample *sample,
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struct perf_evsel *evsel,
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struct machine *machine,
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struct thread *thread)
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{
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struct perf_event_attr *attr = &evsel->attr;
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/* print branch_from information */
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if (PRINT_FIELD(IP)) {
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if (!symbol_conf.use_callchain)
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printf(" ");
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else
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printf("\n");
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perf_event__print_ip(event, sample, machine, evsel,
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PRINT_FIELD(SYM), PRINT_FIELD(DSO),
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PRINT_FIELD(SYMOFFSET));
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}
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printf(" => ");
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/* print branch_to information */
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if (PRINT_FIELD(ADDR))
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print_sample_addr(event, sample, machine, thread, attr);
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printf("\n");
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}
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static void process_event(union perf_event *event __unused,
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struct perf_sample *sample,
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struct perf_evsel *evsel,
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struct machine *machine,
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struct thread *thread)
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{
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struct perf_event_attr *attr = &evsel->attr;
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if (output[attr->type].fields == 0)
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return;
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print_sample_start(sample, thread, attr);
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if (is_bts_event(attr)) {
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print_sample_bts(event, sample, evsel, machine, thread);
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return;
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}
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if (PRINT_FIELD(TRACE))
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print_trace_event(sample->cpu, sample->raw_data,
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sample->raw_size);
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if (PRINT_FIELD(ADDR))
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print_sample_addr(event, sample, machine, thread, attr);
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if (PRINT_FIELD(IP)) {
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if (!symbol_conf.use_callchain)
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printf(" ");
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else
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printf("\n");
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perf_event__print_ip(event, sample, machine, evsel,
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PRINT_FIELD(SYM), PRINT_FIELD(DSO),
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PRINT_FIELD(SYMOFFSET));
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}
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printf("\n");
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}
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static int default_start_script(const char *script __unused,
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int argc __unused,
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const char **argv __unused)
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{
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return 0;
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}
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static int default_stop_script(void)
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{
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return 0;
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}
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static int default_generate_script(const char *outfile __unused)
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{
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return 0;
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}
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static struct scripting_ops default_scripting_ops = {
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.start_script = default_start_script,
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.stop_script = default_stop_script,
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.process_event = process_event,
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.generate_script = default_generate_script,
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};
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static struct scripting_ops *scripting_ops;
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static void setup_scripting(void)
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{
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setup_perl_scripting();
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setup_python_scripting();
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scripting_ops = &default_scripting_ops;
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}
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static int cleanup_scripting(void)
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{
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pr_debug("\nperf script stopped\n");
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return scripting_ops->stop_script();
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}
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static const char *input_name;
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static int process_sample_event(struct perf_tool *tool __used,
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union perf_event *event,
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struct perf_sample *sample,
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struct perf_evsel *evsel,
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struct machine *machine)
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{
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struct addr_location al;
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struct thread *thread = machine__findnew_thread(machine, event->ip.tid);
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if (thread == NULL) {
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pr_debug("problem processing %d event, skipping it.\n",
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event->header.type);
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return -1;
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}
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if (debug_mode) {
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if (sample->time < last_timestamp) {
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pr_err("Samples misordered, previous: %" PRIu64
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" this: %" PRIu64 "\n", last_timestamp,
|
|
sample->time);
|
|
nr_unordered++;
|
|
}
|
|
last_timestamp = sample->time;
|
|
return 0;
|
|
}
|
|
|
|
if (perf_event__preprocess_sample(event, machine, &al, sample, 0) < 0) {
|
|
pr_err("problem processing %d event, skipping it.\n",
|
|
event->header.type);
|
|
return -1;
|
|
}
|
|
|
|
if (al.filtered)
|
|
return 0;
|
|
|
|
if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
|
|
return 0;
|
|
|
|
scripting_ops->process_event(event, sample, evsel, machine, thread);
|
|
|
|
evsel->hists.stats.total_period += sample->period;
|
|
return 0;
|
|
}
|
|
|
|
static struct perf_tool perf_script = {
|
|
.sample = process_sample_event,
|
|
.mmap = perf_event__process_mmap,
|
|
.comm = perf_event__process_comm,
|
|
.exit = perf_event__process_task,
|
|
.fork = perf_event__process_task,
|
|
.attr = perf_event__process_attr,
|
|
.event_type = perf_event__process_event_type,
|
|
.tracing_data = perf_event__process_tracing_data,
|
|
.build_id = perf_event__process_build_id,
|
|
.ordered_samples = true,
|
|
.ordering_requires_timestamps = true,
|
|
};
|
|
|
|
extern volatile int session_done;
|
|
|
|
static void sig_handler(int sig __unused)
|
|
{
|
|
session_done = 1;
|
|
}
|
|
|
|
static int __cmd_script(struct perf_session *session)
|
|
{
|
|
int ret;
|
|
|
|
signal(SIGINT, sig_handler);
|
|
|
|
ret = perf_session__process_events(session, &perf_script);
|
|
|
|
if (debug_mode)
|
|
pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
|
|
|
|
return ret;
|
|
}
|
|
|
|
struct script_spec {
|
|
struct list_head node;
|
|
struct scripting_ops *ops;
|
|
char spec[0];
|
|
};
|
|
|
|
static LIST_HEAD(script_specs);
|
|
|
|
static struct script_spec *script_spec__new(const char *spec,
|
|
struct scripting_ops *ops)
|
|
{
|
|
struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
|
|
|
|
if (s != NULL) {
|
|
strcpy(s->spec, spec);
|
|
s->ops = ops;
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
static void script_spec__add(struct script_spec *s)
|
|
{
|
|
list_add_tail(&s->node, &script_specs);
|
|
}
|
|
|
|
static struct script_spec *script_spec__find(const char *spec)
|
|
{
|
|
struct script_spec *s;
|
|
|
|
list_for_each_entry(s, &script_specs, node)
|
|
if (strcasecmp(s->spec, spec) == 0)
|
|
return s;
|
|
return NULL;
|
|
}
|
|
|
|
static struct script_spec *script_spec__findnew(const char *spec,
|
|
struct scripting_ops *ops)
|
|
{
|
|
struct script_spec *s = script_spec__find(spec);
|
|
|
|
if (s)
|
|
return s;
|
|
|
|
s = script_spec__new(spec, ops);
|
|
if (!s)
|
|
return NULL;
|
|
|
|
script_spec__add(s);
|
|
|
|
return s;
|
|
}
|
|
|
|
int script_spec_register(const char *spec, struct scripting_ops *ops)
|
|
{
|
|
struct script_spec *s;
|
|
|
|
s = script_spec__find(spec);
|
|
if (s)
|
|
return -1;
|
|
|
|
s = script_spec__findnew(spec, ops);
|
|
if (!s)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct scripting_ops *script_spec__lookup(const char *spec)
|
|
{
|
|
struct script_spec *s = script_spec__find(spec);
|
|
if (!s)
|
|
return NULL;
|
|
|
|
return s->ops;
|
|
}
|
|
|
|
static void list_available_languages(void)
|
|
{
|
|
struct script_spec *s;
|
|
|
|
fprintf(stderr, "\n");
|
|
fprintf(stderr, "Scripting language extensions (used in "
|
|
"perf script -s [spec:]script.[spec]):\n\n");
|
|
|
|
list_for_each_entry(s, &script_specs, node)
|
|
fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
|
|
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
static int parse_scriptname(const struct option *opt __used,
|
|
const char *str, int unset __used)
|
|
{
|
|
char spec[PATH_MAX];
|
|
const char *script, *ext;
|
|
int len;
|
|
|
|
if (strcmp(str, "lang") == 0) {
|
|
list_available_languages();
|
|
exit(0);
|
|
}
|
|
|
|
script = strchr(str, ':');
|
|
if (script) {
|
|
len = script - str;
|
|
if (len >= PATH_MAX) {
|
|
fprintf(stderr, "invalid language specifier");
|
|
return -1;
|
|
}
|
|
strncpy(spec, str, len);
|
|
spec[len] = '\0';
|
|
scripting_ops = script_spec__lookup(spec);
|
|
if (!scripting_ops) {
|
|
fprintf(stderr, "invalid language specifier");
|
|
return -1;
|
|
}
|
|
script++;
|
|
} else {
|
|
script = str;
|
|
ext = strrchr(script, '.');
|
|
if (!ext) {
|
|
fprintf(stderr, "invalid script extension");
|
|
return -1;
|
|
}
|
|
scripting_ops = script_spec__lookup(++ext);
|
|
if (!scripting_ops) {
|
|
fprintf(stderr, "invalid script extension");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
script_name = strdup(script);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_output_fields(const struct option *opt __used,
|
|
const char *arg, int unset __used)
|
|
{
|
|
char *tok;
|
|
int i, imax = sizeof(all_output_options) / sizeof(struct output_option);
|
|
int j;
|
|
int rc = 0;
|
|
char *str = strdup(arg);
|
|
int type = -1;
|
|
|
|
if (!str)
|
|
return -ENOMEM;
|
|
|
|
/* first word can state for which event type the user is specifying
|
|
* the fields. If no type exists, the specified fields apply to all
|
|
* event types found in the file minus the invalid fields for a type.
|
|
*/
|
|
tok = strchr(str, ':');
|
|
if (tok) {
|
|
*tok = '\0';
|
|
tok++;
|
|
if (!strcmp(str, "hw"))
|
|
type = PERF_TYPE_HARDWARE;
|
|
else if (!strcmp(str, "sw"))
|
|
type = PERF_TYPE_SOFTWARE;
|
|
else if (!strcmp(str, "trace"))
|
|
type = PERF_TYPE_TRACEPOINT;
|
|
else if (!strcmp(str, "raw"))
|
|
type = PERF_TYPE_RAW;
|
|
else {
|
|
fprintf(stderr, "Invalid event type in field string.\n");
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (output[type].user_set)
|
|
pr_warning("Overriding previous field request for %s events.\n",
|
|
event_type(type));
|
|
|
|
output[type].fields = 0;
|
|
output[type].user_set = true;
|
|
output[type].wildcard_set = false;
|
|
|
|
} else {
|
|
tok = str;
|
|
if (strlen(str) == 0) {
|
|
fprintf(stderr,
|
|
"Cannot set fields to 'none' for all event types.\n");
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (output_set_by_user())
|
|
pr_warning("Overriding previous field request for all events.\n");
|
|
|
|
for (j = 0; j < PERF_TYPE_MAX; ++j) {
|
|
output[j].fields = 0;
|
|
output[j].user_set = true;
|
|
output[j].wildcard_set = true;
|
|
}
|
|
}
|
|
|
|
tok = strtok(tok, ",");
|
|
while (tok) {
|
|
for (i = 0; i < imax; ++i) {
|
|
if (strcmp(tok, all_output_options[i].str) == 0)
|
|
break;
|
|
}
|
|
if (i == imax) {
|
|
fprintf(stderr, "Invalid field requested.\n");
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (type == -1) {
|
|
/* add user option to all events types for
|
|
* which it is valid
|
|
*/
|
|
for (j = 0; j < PERF_TYPE_MAX; ++j) {
|
|
if (output[j].invalid_fields & all_output_options[i].field) {
|
|
pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
|
|
all_output_options[i].str, event_type(j));
|
|
} else
|
|
output[j].fields |= all_output_options[i].field;
|
|
}
|
|
} else {
|
|
if (output[type].invalid_fields & all_output_options[i].field) {
|
|
fprintf(stderr, "\'%s\' not valid for %s events.\n",
|
|
all_output_options[i].str, event_type(type));
|
|
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
output[type].fields |= all_output_options[i].field;
|
|
}
|
|
|
|
tok = strtok(NULL, ",");
|
|
}
|
|
|
|
if (type >= 0) {
|
|
if (output[type].fields == 0) {
|
|
pr_debug("No fields requested for %s type. "
|
|
"Events will not be displayed.\n", event_type(type));
|
|
}
|
|
}
|
|
|
|
out:
|
|
free(str);
|
|
return rc;
|
|
}
|
|
|
|
/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
|
|
static int is_directory(const char *base_path, const struct dirent *dent)
|
|
{
|
|
char path[PATH_MAX];
|
|
struct stat st;
|
|
|
|
sprintf(path, "%s/%s", base_path, dent->d_name);
|
|
if (stat(path, &st))
|
|
return 0;
|
|
|
|
return S_ISDIR(st.st_mode);
|
|
}
|
|
|
|
#define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
|
|
while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) && \
|
|
lang_next) \
|
|
if ((lang_dirent.d_type == DT_DIR || \
|
|
(lang_dirent.d_type == DT_UNKNOWN && \
|
|
is_directory(scripts_path, &lang_dirent))) && \
|
|
(strcmp(lang_dirent.d_name, ".")) && \
|
|
(strcmp(lang_dirent.d_name, "..")))
|
|
|
|
#define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
|
|
while (!readdir_r(lang_dir, &script_dirent, &script_next) && \
|
|
script_next) \
|
|
if (script_dirent.d_type != DT_DIR && \
|
|
(script_dirent.d_type != DT_UNKNOWN || \
|
|
!is_directory(lang_path, &script_dirent)))
|
|
|
|
|
|
#define RECORD_SUFFIX "-record"
|
|
#define REPORT_SUFFIX "-report"
|
|
|
|
struct script_desc {
|
|
struct list_head node;
|
|
char *name;
|
|
char *half_liner;
|
|
char *args;
|
|
};
|
|
|
|
static LIST_HEAD(script_descs);
|
|
|
|
static struct script_desc *script_desc__new(const char *name)
|
|
{
|
|
struct script_desc *s = zalloc(sizeof(*s));
|
|
|
|
if (s != NULL && name)
|
|
s->name = strdup(name);
|
|
|
|
return s;
|
|
}
|
|
|
|
static void script_desc__delete(struct script_desc *s)
|
|
{
|
|
free(s->name);
|
|
free(s->half_liner);
|
|
free(s->args);
|
|
free(s);
|
|
}
|
|
|
|
static void script_desc__add(struct script_desc *s)
|
|
{
|
|
list_add_tail(&s->node, &script_descs);
|
|
}
|
|
|
|
static struct script_desc *script_desc__find(const char *name)
|
|
{
|
|
struct script_desc *s;
|
|
|
|
list_for_each_entry(s, &script_descs, node)
|
|
if (strcasecmp(s->name, name) == 0)
|
|
return s;
|
|
return NULL;
|
|
}
|
|
|
|
static struct script_desc *script_desc__findnew(const char *name)
|
|
{
|
|
struct script_desc *s = script_desc__find(name);
|
|
|
|
if (s)
|
|
return s;
|
|
|
|
s = script_desc__new(name);
|
|
if (!s)
|
|
goto out_delete_desc;
|
|
|
|
script_desc__add(s);
|
|
|
|
return s;
|
|
|
|
out_delete_desc:
|
|
script_desc__delete(s);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *ends_with(const char *str, const char *suffix)
|
|
{
|
|
size_t suffix_len = strlen(suffix);
|
|
const char *p = str;
|
|
|
|
if (strlen(str) > suffix_len) {
|
|
p = str + strlen(str) - suffix_len;
|
|
if (!strncmp(p, suffix, suffix_len))
|
|
return p;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static char *ltrim(char *str)
|
|
{
|
|
int len = strlen(str);
|
|
|
|
while (len && isspace(*str)) {
|
|
len--;
|
|
str++;
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
static int read_script_info(struct script_desc *desc, const char *filename)
|
|
{
|
|
char line[BUFSIZ], *p;
|
|
FILE *fp;
|
|
|
|
fp = fopen(filename, "r");
|
|
if (!fp)
|
|
return -1;
|
|
|
|
while (fgets(line, sizeof(line), fp)) {
|
|
p = ltrim(line);
|
|
if (strlen(p) == 0)
|
|
continue;
|
|
if (*p != '#')
|
|
continue;
|
|
p++;
|
|
if (strlen(p) && *p == '!')
|
|
continue;
|
|
|
|
p = ltrim(p);
|
|
if (strlen(p) && p[strlen(p) - 1] == '\n')
|
|
p[strlen(p) - 1] = '\0';
|
|
|
|
if (!strncmp(p, "description:", strlen("description:"))) {
|
|
p += strlen("description:");
|
|
desc->half_liner = strdup(ltrim(p));
|
|
continue;
|
|
}
|
|
|
|
if (!strncmp(p, "args:", strlen("args:"))) {
|
|
p += strlen("args:");
|
|
desc->args = strdup(ltrim(p));
|
|
continue;
|
|
}
|
|
}
|
|
|
|
fclose(fp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static char *get_script_root(struct dirent *script_dirent, const char *suffix)
|
|
{
|
|
char *script_root, *str;
|
|
|
|
script_root = strdup(script_dirent->d_name);
|
|
if (!script_root)
|
|
return NULL;
|
|
|
|
str = (char *)ends_with(script_root, suffix);
|
|
if (!str) {
|
|
free(script_root);
|
|
return NULL;
|
|
}
|
|
|
|
*str = '\0';
|
|
return script_root;
|
|
}
|
|
|
|
static int list_available_scripts(const struct option *opt __used,
|
|
const char *s __used, int unset __used)
|
|
{
|
|
struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
|
|
char scripts_path[MAXPATHLEN];
|
|
DIR *scripts_dir, *lang_dir;
|
|
char script_path[MAXPATHLEN];
|
|
char lang_path[MAXPATHLEN];
|
|
struct script_desc *desc;
|
|
char first_half[BUFSIZ];
|
|
char *script_root;
|
|
|
|
snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
|
|
|
|
scripts_dir = opendir(scripts_path);
|
|
if (!scripts_dir)
|
|
return -1;
|
|
|
|
for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
|
|
snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
|
|
lang_dirent.d_name);
|
|
lang_dir = opendir(lang_path);
|
|
if (!lang_dir)
|
|
continue;
|
|
|
|
for_each_script(lang_path, lang_dir, script_dirent, script_next) {
|
|
script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
|
|
if (script_root) {
|
|
desc = script_desc__findnew(script_root);
|
|
snprintf(script_path, MAXPATHLEN, "%s/%s",
|
|
lang_path, script_dirent.d_name);
|
|
read_script_info(desc, script_path);
|
|
free(script_root);
|
|
}
|
|
}
|
|
}
|
|
|
|
fprintf(stdout, "List of available trace scripts:\n");
|
|
list_for_each_entry(desc, &script_descs, node) {
|
|
sprintf(first_half, "%s %s", desc->name,
|
|
desc->args ? desc->args : "");
|
|
fprintf(stdout, " %-36s %s\n", first_half,
|
|
desc->half_liner ? desc->half_liner : "");
|
|
}
|
|
|
|
exit(0);
|
|
}
|
|
|
|
static char *get_script_path(const char *script_root, const char *suffix)
|
|
{
|
|
struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
|
|
char scripts_path[MAXPATHLEN];
|
|
char script_path[MAXPATHLEN];
|
|
DIR *scripts_dir, *lang_dir;
|
|
char lang_path[MAXPATHLEN];
|
|
char *__script_root;
|
|
|
|
snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
|
|
|
|
scripts_dir = opendir(scripts_path);
|
|
if (!scripts_dir)
|
|
return NULL;
|
|
|
|
for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
|
|
snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
|
|
lang_dirent.d_name);
|
|
lang_dir = opendir(lang_path);
|
|
if (!lang_dir)
|
|
continue;
|
|
|
|
for_each_script(lang_path, lang_dir, script_dirent, script_next) {
|
|
__script_root = get_script_root(&script_dirent, suffix);
|
|
if (__script_root && !strcmp(script_root, __script_root)) {
|
|
free(__script_root);
|
|
closedir(lang_dir);
|
|
closedir(scripts_dir);
|
|
snprintf(script_path, MAXPATHLEN, "%s/%s",
|
|
lang_path, script_dirent.d_name);
|
|
return strdup(script_path);
|
|
}
|
|
free(__script_root);
|
|
}
|
|
closedir(lang_dir);
|
|
}
|
|
closedir(scripts_dir);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static bool is_top_script(const char *script_path)
|
|
{
|
|
return ends_with(script_path, "top") == NULL ? false : true;
|
|
}
|
|
|
|
static int has_required_arg(char *script_path)
|
|
{
|
|
struct script_desc *desc;
|
|
int n_args = 0;
|
|
char *p;
|
|
|
|
desc = script_desc__new(NULL);
|
|
|
|
if (read_script_info(desc, script_path))
|
|
goto out;
|
|
|
|
if (!desc->args)
|
|
goto out;
|
|
|
|
for (p = desc->args; *p; p++)
|
|
if (*p == '<')
|
|
n_args++;
|
|
out:
|
|
script_desc__delete(desc);
|
|
|
|
return n_args;
|
|
}
|
|
|
|
static const char * const script_usage[] = {
|
|
"perf script [<options>]",
|
|
"perf script [<options>] record <script> [<record-options>] <command>",
|
|
"perf script [<options>] report <script> [script-args]",
|
|
"perf script [<options>] <script> [<record-options>] <command>",
|
|
"perf script [<options>] <top-script> [script-args]",
|
|
NULL
|
|
};
|
|
|
|
static const struct option options[] = {
|
|
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
|
|
"dump raw trace in ASCII"),
|
|
OPT_INCR('v', "verbose", &verbose,
|
|
"be more verbose (show symbol address, etc)"),
|
|
OPT_BOOLEAN('L', "Latency", &latency_format,
|
|
"show latency attributes (irqs/preemption disabled, etc)"),
|
|
OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
|
|
list_available_scripts),
|
|
OPT_CALLBACK('s', "script", NULL, "name",
|
|
"script file name (lang:script name, script name, or *)",
|
|
parse_scriptname),
|
|
OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
|
|
"generate perf-script.xx script in specified language"),
|
|
OPT_STRING('i', "input", &input_name, "file",
|
|
"input file name"),
|
|
OPT_BOOLEAN('d', "debug-mode", &debug_mode,
|
|
"do various checks like samples ordering and lost events"),
|
|
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
|
|
"file", "vmlinux pathname"),
|
|
OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
|
|
"file", "kallsyms pathname"),
|
|
OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
|
|
"When printing symbols do not display call chain"),
|
|
OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
|
|
"Look for files with symbols relative to this directory"),
|
|
OPT_CALLBACK('f', "fields", NULL, "str",
|
|
"comma separated output fields prepend with 'type:'. "
|
|
"Valid types: hw,sw,trace,raw. "
|
|
"Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
|
|
"addr,symoff",
|
|
parse_output_fields),
|
|
OPT_BOOLEAN('a', "all-cpus", &system_wide,
|
|
"system-wide collection from all CPUs"),
|
|
OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
|
|
OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
|
|
"only display events for these comms"),
|
|
OPT_BOOLEAN('I', "show-info", &show_full_info,
|
|
"display extended information from perf.data file"),
|
|
OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
|
|
"Show the path of [kernel.kallsyms]"),
|
|
|
|
OPT_END()
|
|
};
|
|
|
|
static bool have_cmd(int argc, const char **argv)
|
|
{
|
|
char **__argv = malloc(sizeof(const char *) * argc);
|
|
|
|
if (!__argv)
|
|
die("malloc");
|
|
memcpy(__argv, argv, sizeof(const char *) * argc);
|
|
argc = parse_options(argc, (const char **)__argv, record_options,
|
|
NULL, PARSE_OPT_STOP_AT_NON_OPTION);
|
|
free(__argv);
|
|
|
|
return argc != 0;
|
|
}
|
|
|
|
int cmd_script(int argc, const char **argv, const char *prefix __used)
|
|
{
|
|
char *rec_script_path = NULL;
|
|
char *rep_script_path = NULL;
|
|
struct perf_session *session;
|
|
char *script_path = NULL;
|
|
const char **__argv;
|
|
int i, j, err;
|
|
|
|
setup_scripting();
|
|
|
|
argc = parse_options(argc, argv, options, script_usage,
|
|
PARSE_OPT_STOP_AT_NON_OPTION);
|
|
|
|
if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
|
|
rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
|
|
if (!rec_script_path)
|
|
return cmd_record(argc, argv, NULL);
|
|
}
|
|
|
|
if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
|
|
rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
|
|
if (!rep_script_path) {
|
|
fprintf(stderr,
|
|
"Please specify a valid report script"
|
|
"(see 'perf script -l' for listing)\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* make sure PERF_EXEC_PATH is set for scripts */
|
|
perf_set_argv_exec_path(perf_exec_path());
|
|
|
|
if (argc && !script_name && !rec_script_path && !rep_script_path) {
|
|
int live_pipe[2];
|
|
int rep_args;
|
|
pid_t pid;
|
|
|
|
rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
|
|
rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
|
|
|
|
if (!rec_script_path && !rep_script_path) {
|
|
fprintf(stderr, " Couldn't find script %s\n\n See perf"
|
|
" script -l for available scripts.\n", argv[0]);
|
|
usage_with_options(script_usage, options);
|
|
}
|
|
|
|
if (is_top_script(argv[0])) {
|
|
rep_args = argc - 1;
|
|
} else {
|
|
int rec_args;
|
|
|
|
rep_args = has_required_arg(rep_script_path);
|
|
rec_args = (argc - 1) - rep_args;
|
|
if (rec_args < 0) {
|
|
fprintf(stderr, " %s script requires options."
|
|
"\n\n See perf script -l for available "
|
|
"scripts and options.\n", argv[0]);
|
|
usage_with_options(script_usage, options);
|
|
}
|
|
}
|
|
|
|
if (pipe(live_pipe) < 0) {
|
|
perror("failed to create pipe");
|
|
exit(-1);
|
|
}
|
|
|
|
pid = fork();
|
|
if (pid < 0) {
|
|
perror("failed to fork");
|
|
exit(-1);
|
|
}
|
|
|
|
if (!pid) {
|
|
j = 0;
|
|
|
|
dup2(live_pipe[1], 1);
|
|
close(live_pipe[0]);
|
|
|
|
if (is_top_script(argv[0])) {
|
|
system_wide = true;
|
|
} else if (!system_wide) {
|
|
system_wide = !have_cmd(argc - rep_args,
|
|
&argv[rep_args]);
|
|
}
|
|
|
|
__argv = malloc((argc + 6) * sizeof(const char *));
|
|
if (!__argv)
|
|
die("malloc");
|
|
|
|
__argv[j++] = "/bin/sh";
|
|
__argv[j++] = rec_script_path;
|
|
if (system_wide)
|
|
__argv[j++] = "-a";
|
|
__argv[j++] = "-q";
|
|
__argv[j++] = "-o";
|
|
__argv[j++] = "-";
|
|
for (i = rep_args + 1; i < argc; i++)
|
|
__argv[j++] = argv[i];
|
|
__argv[j++] = NULL;
|
|
|
|
execvp("/bin/sh", (char **)__argv);
|
|
free(__argv);
|
|
exit(-1);
|
|
}
|
|
|
|
dup2(live_pipe[0], 0);
|
|
close(live_pipe[1]);
|
|
|
|
__argv = malloc((argc + 4) * sizeof(const char *));
|
|
if (!__argv)
|
|
die("malloc");
|
|
j = 0;
|
|
__argv[j++] = "/bin/sh";
|
|
__argv[j++] = rep_script_path;
|
|
for (i = 1; i < rep_args + 1; i++)
|
|
__argv[j++] = argv[i];
|
|
__argv[j++] = "-i";
|
|
__argv[j++] = "-";
|
|
__argv[j++] = NULL;
|
|
|
|
execvp("/bin/sh", (char **)__argv);
|
|
free(__argv);
|
|
exit(-1);
|
|
}
|
|
|
|
if (rec_script_path)
|
|
script_path = rec_script_path;
|
|
if (rep_script_path)
|
|
script_path = rep_script_path;
|
|
|
|
if (script_path) {
|
|
j = 0;
|
|
|
|
if (!rec_script_path)
|
|
system_wide = false;
|
|
else if (!system_wide)
|
|
system_wide = !have_cmd(argc - 1, &argv[1]);
|
|
|
|
__argv = malloc((argc + 2) * sizeof(const char *));
|
|
if (!__argv)
|
|
die("malloc");
|
|
__argv[j++] = "/bin/sh";
|
|
__argv[j++] = script_path;
|
|
if (system_wide)
|
|
__argv[j++] = "-a";
|
|
for (i = 2; i < argc; i++)
|
|
__argv[j++] = argv[i];
|
|
__argv[j++] = NULL;
|
|
|
|
execvp("/bin/sh", (char **)__argv);
|
|
free(__argv);
|
|
exit(-1);
|
|
}
|
|
|
|
if (symbol__init() < 0)
|
|
return -1;
|
|
if (!script_name)
|
|
setup_pager();
|
|
|
|
session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_script);
|
|
if (session == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (cpu_list) {
|
|
if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
|
|
return -1;
|
|
}
|
|
|
|
perf_session__fprintf_info(session, stdout, show_full_info);
|
|
|
|
if (!no_callchain)
|
|
symbol_conf.use_callchain = true;
|
|
else
|
|
symbol_conf.use_callchain = false;
|
|
|
|
if (generate_script_lang) {
|
|
struct stat perf_stat;
|
|
int input;
|
|
|
|
if (output_set_by_user()) {
|
|
fprintf(stderr,
|
|
"custom fields not supported for generated scripts");
|
|
return -1;
|
|
}
|
|
|
|
input = open(session->filename, O_RDONLY); /* input_name */
|
|
if (input < 0) {
|
|
perror("failed to open file");
|
|
exit(-1);
|
|
}
|
|
|
|
err = fstat(input, &perf_stat);
|
|
if (err < 0) {
|
|
perror("failed to stat file");
|
|
exit(-1);
|
|
}
|
|
|
|
if (!perf_stat.st_size) {
|
|
fprintf(stderr, "zero-sized file, nothing to do!\n");
|
|
exit(0);
|
|
}
|
|
|
|
scripting_ops = script_spec__lookup(generate_script_lang);
|
|
if (!scripting_ops) {
|
|
fprintf(stderr, "invalid language specifier");
|
|
return -1;
|
|
}
|
|
|
|
err = scripting_ops->generate_script("perf-script");
|
|
goto out;
|
|
}
|
|
|
|
if (script_name) {
|
|
err = scripting_ops->start_script(script_name, argc, argv);
|
|
if (err)
|
|
goto out;
|
|
pr_debug("perf script started with script %s\n\n", script_name);
|
|
}
|
|
|
|
|
|
err = perf_session__check_output_opt(session);
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
err = __cmd_script(session);
|
|
|
|
perf_session__delete(session);
|
|
cleanup_scripting();
|
|
out:
|
|
return err;
|
|
}
|