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https://github.com/edk2-porting/linux-next.git
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53ff6bc37b
In a couple of cases the 'comm' member of 'union event' has been used instead of the correct member ('fork') when processing exit events. In the cases where it has been used incorrectly, only the 'pid' and 'tid' are affected. The 'pid' value would be correct anyway because it is in the same position in 'comm' and 'fork' events, but the 'tid' would have been incorrectly assigned from 'ppid'. However, for exit events, the kernel puts the current task in the 'ppid' and 'ttid' which is the same as the exiting task. That is 'ppid' == 'pid' and if the task is not multi-threaded, 'pid' == 'tid' i.e. the data goes wrong only when tracing multi-threaded programs. It is hard to find an example of how this would produce an error in practice. There are 3 occurences of the fix: 1. perf script is only affected if !sample_id_all which only happens on old kernels. 2. intel_pt is only affected when decoding without timestamps and would probably still decode correctly - the exit event is only used to flush out data which anyway gets flushed at the end of the session 3. intel_bts also uses the exit event to flush data which would probably not cause errors as it would get flushed at the end of the session instead Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439888825-27708-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1991 lines
49 KiB
C
1991 lines
49 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/perf_regs.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 "util/sort.h"
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#include "util/data.h"
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#include "util/auxtrace.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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static bool no_callchain;
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static bool latency_format;
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static bool system_wide;
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static bool print_flags;
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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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PERF_OUTPUT_SRCLINE = 1U << 12,
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PERF_OUTPUT_PERIOD = 1U << 13,
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PERF_OUTPUT_IREGS = 1U << 14,
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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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{.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
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{.str = "period", .field = PERF_OUTPUT_PERIOD},
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{.str = "iregs", .field = PERF_OUTPUT_IREGS},
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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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unsigned int print_ip_opts;
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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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PERF_OUTPUT_PERIOD,
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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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PERF_OUTPUT_PERIOD,
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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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PERF_OUTPUT_PERIOD,
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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_evsel__do_check_stype(struct perf_evsel *evsel,
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u64 sample_type, const char *sample_msg,
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enum perf_output_field field,
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bool allow_user_set)
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{
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struct perf_event_attr *attr = &evsel->attr;
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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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if (allow_user_set)
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return 0;
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evname = perf_evsel__name(evsel);
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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 = perf_evsel__name(evsel);
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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_stype(struct perf_evsel *evsel,
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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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return perf_evsel__do_check_stype(evsel, sample_type, sample_msg, field,
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false);
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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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bool allow_user_set;
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allow_user_set = perf_header__has_feat(&session->header,
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HEADER_AUXTRACE);
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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_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP",
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PERF_OUTPUT_IP))
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return -EINVAL;
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}
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if (PRINT_FIELD(ADDR) &&
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perf_evsel__do_check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
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PERF_OUTPUT_ADDR, allow_user_set))
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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(SRCLINE) && !PRINT_FIELD(IP)) {
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pr_err("Display of source line number requested but sample IP is not\n"
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"selected. Hence, no address to lookup the source line number.\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_evsel__check_stype(evsel, 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_evsel__check_stype(evsel, 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_evsel__do_check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
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PERF_OUTPUT_CPU, allow_user_set))
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return -EINVAL;
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if (PRINT_FIELD(PERIOD) &&
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perf_evsel__check_stype(evsel, PERF_SAMPLE_PERIOD, "PERIOD",
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PERF_OUTPUT_PERIOD))
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return -EINVAL;
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if (PRINT_FIELD(IREGS) &&
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perf_evsel__check_stype(evsel, PERF_SAMPLE_REGS_INTR, "IREGS",
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PERF_OUTPUT_IREGS))
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return -EINVAL;
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return 0;
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}
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static void set_print_ip_opts(struct perf_event_attr *attr)
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{
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unsigned int type = attr->type;
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output[type].print_ip_opts = 0;
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if (PRINT_FIELD(IP))
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output[type].print_ip_opts |= PRINT_IP_OPT_IP;
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if (PRINT_FIELD(SYM))
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output[type].print_ip_opts |= PRINT_IP_OPT_SYM;
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if (PRINT_FIELD(DSO))
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output[type].print_ip_opts |= PRINT_IP_OPT_DSO;
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if (PRINT_FIELD(SYMOFFSET))
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output[type].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET;
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if (PRINT_FIELD(SRCLINE))
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output[type].print_ip_opts |= PRINT_IP_OPT_SRCLINE;
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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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if (evsel == NULL)
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continue;
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set_print_ip_opts(&evsel->attr);
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}
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if (!no_callchain) {
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bool use_callchain = false;
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evlist__for_each(session->evlist, evsel) {
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if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) {
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use_callchain = true;
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break;
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}
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}
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if (!use_callchain)
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symbol_conf.use_callchain = false;
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}
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/*
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* set default for tracepoints to print symbols only
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* if callchains are present
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*/
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if (symbol_conf.use_callchain &&
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!output[PERF_TYPE_TRACEPOINT].user_set) {
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struct perf_event_attr *attr;
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j = PERF_TYPE_TRACEPOINT;
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evsel = perf_session__find_first_evtype(session, j);
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if (evsel == NULL)
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goto out;
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attr = &evsel->attr;
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if (attr->sample_type & PERF_SAMPLE_CALLCHAIN) {
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output[j].fields |= PERF_OUTPUT_IP;
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output[j].fields |= PERF_OUTPUT_SYM;
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output[j].fields |= PERF_OUTPUT_DSO;
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set_print_ip_opts(attr);
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}
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}
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out:
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return 0;
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}
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static void print_sample_iregs(union perf_event *event __maybe_unused,
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struct perf_sample *sample,
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struct thread *thread __maybe_unused,
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struct perf_event_attr *attr)
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{
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struct regs_dump *regs = &sample->intr_regs;
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uint64_t mask = attr->sample_regs_intr;
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unsigned i = 0, r;
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if (!regs)
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return;
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for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
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u64 val = regs->regs[i++];
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printf("%5s:0x%"PRIx64" ", perf_reg_name(r), val);
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}
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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_evsel *evsel)
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{
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struct perf_event_attr *attr = &evsel->attr;
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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_str(thread));
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else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
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printf("%s ", thread__comm_str(thread));
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else
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printf("%16s ", thread__comm_str(thread));
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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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}
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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 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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printf("%16" PRIx64, sample->addr);
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if (!sample_addr_correlates_sym(attr))
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return;
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perf_event__preprocess_sample_addr(event, sample, thread, &al);
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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 thread *thread,
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struct addr_location *al)
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{
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struct perf_event_attr *attr = &evsel->attr;
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bool print_srcline_last = false;
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/* print branch_from information */
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if (PRINT_FIELD(IP)) {
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unsigned int print_opts = output[attr->type].print_ip_opts;
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if (symbol_conf.use_callchain && sample->callchain) {
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printf("\n");
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} else {
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printf(" ");
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if (print_opts & PRINT_IP_OPT_SRCLINE) {
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print_srcline_last = true;
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print_opts &= ~PRINT_IP_OPT_SRCLINE;
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}
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}
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perf_evsel__print_ip(evsel, sample, al, print_opts,
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PERF_MAX_STACK_DEPTH);
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}
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/* print branch_to information */
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if (PRINT_FIELD(ADDR) ||
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((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
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!output[attr->type].user_set)) {
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printf(" => ");
|
|
print_sample_addr(event, sample, thread, attr);
|
|
}
|
|
|
|
if (print_srcline_last)
|
|
map__fprintf_srcline(al->map, al->addr, "\n ", stdout);
|
|
|
|
printf("\n");
|
|
}
|
|
|
|
static void print_sample_flags(u32 flags)
|
|
{
|
|
const char *chars = PERF_IP_FLAG_CHARS;
|
|
const int n = strlen(PERF_IP_FLAG_CHARS);
|
|
char str[33];
|
|
int i, pos = 0;
|
|
|
|
for (i = 0; i < n; i++, flags >>= 1) {
|
|
if (flags & 1)
|
|
str[pos++] = chars[i];
|
|
}
|
|
for (; i < 32; i++, flags >>= 1) {
|
|
if (flags & 1)
|
|
str[pos++] = '?';
|
|
}
|
|
str[pos] = 0;
|
|
printf(" %-4s ", str);
|
|
}
|
|
|
|
static void process_event(union perf_event *event, struct perf_sample *sample,
|
|
struct perf_evsel *evsel, struct addr_location *al)
|
|
{
|
|
struct thread *thread = al->thread;
|
|
struct perf_event_attr *attr = &evsel->attr;
|
|
|
|
if (output[attr->type].fields == 0)
|
|
return;
|
|
|
|
print_sample_start(sample, thread, evsel);
|
|
|
|
if (PRINT_FIELD(PERIOD))
|
|
printf("%10" PRIu64 " ", sample->period);
|
|
|
|
if (PRINT_FIELD(EVNAME)) {
|
|
const char *evname = perf_evsel__name(evsel);
|
|
printf("%s: ", evname ? evname : "[unknown]");
|
|
}
|
|
|
|
if (print_flags)
|
|
print_sample_flags(sample->flags);
|
|
|
|
if (is_bts_event(attr)) {
|
|
print_sample_bts(event, sample, evsel, thread, al);
|
|
return;
|
|
}
|
|
|
|
if (PRINT_FIELD(TRACE))
|
|
event_format__print(evsel->tp_format, sample->cpu,
|
|
sample->raw_data, sample->raw_size);
|
|
if (PRINT_FIELD(ADDR))
|
|
print_sample_addr(event, sample, thread, attr);
|
|
|
|
if (PRINT_FIELD(IP)) {
|
|
if (!symbol_conf.use_callchain)
|
|
printf(" ");
|
|
else
|
|
printf("\n");
|
|
|
|
perf_evsel__print_ip(evsel, sample, al,
|
|
output[attr->type].print_ip_opts,
|
|
PERF_MAX_STACK_DEPTH);
|
|
}
|
|
|
|
if (PRINT_FIELD(IREGS))
|
|
print_sample_iregs(event, sample, thread, attr);
|
|
|
|
printf("\n");
|
|
}
|
|
|
|
static int default_start_script(const char *script __maybe_unused,
|
|
int argc __maybe_unused,
|
|
const char **argv __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int default_flush_script(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int default_stop_script(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int default_generate_script(struct pevent *pevent __maybe_unused,
|
|
const char *outfile __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static struct scripting_ops default_scripting_ops = {
|
|
.start_script = default_start_script,
|
|
.flush_script = default_flush_script,
|
|
.stop_script = default_stop_script,
|
|
.process_event = process_event,
|
|
.generate_script = default_generate_script,
|
|
};
|
|
|
|
static struct scripting_ops *scripting_ops;
|
|
|
|
static void setup_scripting(void)
|
|
{
|
|
setup_perl_scripting();
|
|
setup_python_scripting();
|
|
|
|
scripting_ops = &default_scripting_ops;
|
|
}
|
|
|
|
static int flush_scripting(void)
|
|
{
|
|
return scripting_ops->flush_script();
|
|
}
|
|
|
|
static int cleanup_scripting(void)
|
|
{
|
|
pr_debug("\nperf script stopped\n");
|
|
|
|
return scripting_ops->stop_script();
|
|
}
|
|
|
|
static int process_sample_event(struct perf_tool *tool __maybe_unused,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct perf_evsel *evsel,
|
|
struct machine *machine)
|
|
{
|
|
struct addr_location al;
|
|
|
|
if (debug_mode) {
|
|
if (sample->time < last_timestamp) {
|
|
pr_err("Samples misordered, previous: %" PRIu64
|
|
" 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) {
|
|
pr_err("problem processing %d event, skipping it.\n",
|
|
event->header.type);
|
|
return -1;
|
|
}
|
|
|
|
if (al.filtered)
|
|
goto out_put;
|
|
|
|
if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
|
|
goto out_put;
|
|
|
|
scripting_ops->process_event(event, sample, evsel, &al);
|
|
out_put:
|
|
addr_location__put(&al);
|
|
return 0;
|
|
}
|
|
|
|
struct perf_script {
|
|
struct perf_tool tool;
|
|
struct perf_session *session;
|
|
bool show_task_events;
|
|
bool show_mmap_events;
|
|
bool show_switch_events;
|
|
};
|
|
|
|
static int process_attr(struct perf_tool *tool, union perf_event *event,
|
|
struct perf_evlist **pevlist)
|
|
{
|
|
struct perf_script *scr = container_of(tool, struct perf_script, tool);
|
|
struct perf_evlist *evlist;
|
|
struct perf_evsel *evsel, *pos;
|
|
int err;
|
|
|
|
err = perf_event__process_attr(tool, event, pevlist);
|
|
if (err)
|
|
return err;
|
|
|
|
evlist = *pevlist;
|
|
evsel = perf_evlist__last(*pevlist);
|
|
|
|
if (evsel->attr.type >= PERF_TYPE_MAX)
|
|
return 0;
|
|
|
|
evlist__for_each(evlist, pos) {
|
|
if (pos->attr.type == evsel->attr.type && pos != evsel)
|
|
return 0;
|
|
}
|
|
|
|
set_print_ip_opts(&evsel->attr);
|
|
|
|
return perf_evsel__check_attr(evsel, scr->session);
|
|
}
|
|
|
|
static int process_comm_event(struct perf_tool *tool,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct machine *machine)
|
|
{
|
|
struct thread *thread;
|
|
struct perf_script *script = container_of(tool, struct perf_script, tool);
|
|
struct perf_session *session = script->session;
|
|
struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
|
|
int ret = -1;
|
|
|
|
thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid);
|
|
if (thread == NULL) {
|
|
pr_debug("problem processing COMM event, skipping it.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (perf_event__process_comm(tool, event, sample, machine) < 0)
|
|
goto out;
|
|
|
|
if (!evsel->attr.sample_id_all) {
|
|
sample->cpu = 0;
|
|
sample->time = 0;
|
|
sample->tid = event->comm.tid;
|
|
sample->pid = event->comm.pid;
|
|
}
|
|
print_sample_start(sample, thread, evsel);
|
|
perf_event__fprintf(event, stdout);
|
|
ret = 0;
|
|
out:
|
|
thread__put(thread);
|
|
return ret;
|
|
}
|
|
|
|
static int process_fork_event(struct perf_tool *tool,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct machine *machine)
|
|
{
|
|
struct thread *thread;
|
|
struct perf_script *script = container_of(tool, struct perf_script, tool);
|
|
struct perf_session *session = script->session;
|
|
struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
|
|
|
|
if (perf_event__process_fork(tool, event, sample, machine) < 0)
|
|
return -1;
|
|
|
|
thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
|
|
if (thread == NULL) {
|
|
pr_debug("problem processing FORK event, skipping it.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!evsel->attr.sample_id_all) {
|
|
sample->cpu = 0;
|
|
sample->time = event->fork.time;
|
|
sample->tid = event->fork.tid;
|
|
sample->pid = event->fork.pid;
|
|
}
|
|
print_sample_start(sample, thread, evsel);
|
|
perf_event__fprintf(event, stdout);
|
|
thread__put(thread);
|
|
|
|
return 0;
|
|
}
|
|
static int process_exit_event(struct perf_tool *tool,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct machine *machine)
|
|
{
|
|
int err = 0;
|
|
struct thread *thread;
|
|
struct perf_script *script = container_of(tool, struct perf_script, tool);
|
|
struct perf_session *session = script->session;
|
|
struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
|
|
|
|
thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
|
|
if (thread == NULL) {
|
|
pr_debug("problem processing EXIT event, skipping it.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!evsel->attr.sample_id_all) {
|
|
sample->cpu = 0;
|
|
sample->time = 0;
|
|
sample->tid = event->fork.tid;
|
|
sample->pid = event->fork.pid;
|
|
}
|
|
print_sample_start(sample, thread, evsel);
|
|
perf_event__fprintf(event, stdout);
|
|
|
|
if (perf_event__process_exit(tool, event, sample, machine) < 0)
|
|
err = -1;
|
|
|
|
thread__put(thread);
|
|
return err;
|
|
}
|
|
|
|
static int process_mmap_event(struct perf_tool *tool,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct machine *machine)
|
|
{
|
|
struct thread *thread;
|
|
struct perf_script *script = container_of(tool, struct perf_script, tool);
|
|
struct perf_session *session = script->session;
|
|
struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
|
|
|
|
if (perf_event__process_mmap(tool, event, sample, machine) < 0)
|
|
return -1;
|
|
|
|
thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid);
|
|
if (thread == NULL) {
|
|
pr_debug("problem processing MMAP event, skipping it.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!evsel->attr.sample_id_all) {
|
|
sample->cpu = 0;
|
|
sample->time = 0;
|
|
sample->tid = event->mmap.tid;
|
|
sample->pid = event->mmap.pid;
|
|
}
|
|
print_sample_start(sample, thread, evsel);
|
|
perf_event__fprintf(event, stdout);
|
|
thread__put(thread);
|
|
return 0;
|
|
}
|
|
|
|
static int process_mmap2_event(struct perf_tool *tool,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct machine *machine)
|
|
{
|
|
struct thread *thread;
|
|
struct perf_script *script = container_of(tool, struct perf_script, tool);
|
|
struct perf_session *session = script->session;
|
|
struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
|
|
|
|
if (perf_event__process_mmap2(tool, event, sample, machine) < 0)
|
|
return -1;
|
|
|
|
thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid);
|
|
if (thread == NULL) {
|
|
pr_debug("problem processing MMAP2 event, skipping it.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!evsel->attr.sample_id_all) {
|
|
sample->cpu = 0;
|
|
sample->time = 0;
|
|
sample->tid = event->mmap2.tid;
|
|
sample->pid = event->mmap2.pid;
|
|
}
|
|
print_sample_start(sample, thread, evsel);
|
|
perf_event__fprintf(event, stdout);
|
|
thread__put(thread);
|
|
return 0;
|
|
}
|
|
|
|
static int process_switch_event(struct perf_tool *tool,
|
|
union perf_event *event,
|
|
struct perf_sample *sample,
|
|
struct machine *machine)
|
|
{
|
|
struct thread *thread;
|
|
struct perf_script *script = container_of(tool, struct perf_script, tool);
|
|
struct perf_session *session = script->session;
|
|
struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
|
|
|
|
if (perf_event__process_switch(tool, event, sample, machine) < 0)
|
|
return -1;
|
|
|
|
thread = machine__findnew_thread(machine, sample->pid,
|
|
sample->tid);
|
|
if (thread == NULL) {
|
|
pr_debug("problem processing SWITCH event, skipping it.\n");
|
|
return -1;
|
|
}
|
|
|
|
print_sample_start(sample, thread, evsel);
|
|
perf_event__fprintf(event, stdout);
|
|
thread__put(thread);
|
|
return 0;
|
|
}
|
|
|
|
static void sig_handler(int sig __maybe_unused)
|
|
{
|
|
session_done = 1;
|
|
}
|
|
|
|
static int __cmd_script(struct perf_script *script)
|
|
{
|
|
int ret;
|
|
|
|
signal(SIGINT, sig_handler);
|
|
|
|
/* override event processing functions */
|
|
if (script->show_task_events) {
|
|
script->tool.comm = process_comm_event;
|
|
script->tool.fork = process_fork_event;
|
|
script->tool.exit = process_exit_event;
|
|
}
|
|
if (script->show_mmap_events) {
|
|
script->tool.mmap = process_mmap_event;
|
|
script->tool.mmap2 = process_mmap2_event;
|
|
}
|
|
if (script->show_switch_events)
|
|
script->tool.context_switch = process_switch_event;
|
|
|
|
ret = perf_session__process_events(script->session);
|
|
|
|
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 __maybe_unused,
|
|
const char *str, int unset __maybe_unused)
|
|
{
|
|
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 __maybe_unused,
|
|
const char *arg, int unset __maybe_unused)
|
|
{
|
|
char *tok;
|
|
int i, imax = ARRAY_SIZE(all_output_options);
|
|
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;
|
|
}
|
|
}
|
|
|
|
for (tok = strtok(tok, ","); tok; tok = strtok(NULL, ",")) {
|
|
for (i = 0; i < imax; ++i) {
|
|
if (strcmp(tok, all_output_options[i].str) == 0)
|
|
break;
|
|
}
|
|
if (i == imax && strcmp(tok, "flags") == 0) {
|
|
print_flags = true;
|
|
continue;
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
|
|
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)
|
|
{
|
|
zfree(&s->name);
|
|
zfree(&s->half_liner);
|
|
zfree(&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 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 __maybe_unused,
|
|
const char *s __maybe_unused,
|
|
int unset __maybe_unused)
|
|
{
|
|
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);
|
|
}
|
|
|
|
/*
|
|
* Some scripts specify the required events in their "xxx-record" file,
|
|
* this function will check if the events in perf.data match those
|
|
* mentioned in the "xxx-record".
|
|
*
|
|
* Fixme: All existing "xxx-record" are all in good formats "-e event ",
|
|
* which is covered well now. And new parsing code should be added to
|
|
* cover the future complexing formats like event groups etc.
|
|
*/
|
|
static int check_ev_match(char *dir_name, char *scriptname,
|
|
struct perf_session *session)
|
|
{
|
|
char filename[MAXPATHLEN], evname[128];
|
|
char line[BUFSIZ], *p;
|
|
struct perf_evsel *pos;
|
|
int match, len;
|
|
FILE *fp;
|
|
|
|
sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
|
|
|
|
fp = fopen(filename, "r");
|
|
if (!fp)
|
|
return -1;
|
|
|
|
while (fgets(line, sizeof(line), fp)) {
|
|
p = ltrim(line);
|
|
if (*p == '#')
|
|
continue;
|
|
|
|
while (strlen(p)) {
|
|
p = strstr(p, "-e");
|
|
if (!p)
|
|
break;
|
|
|
|
p += 2;
|
|
p = ltrim(p);
|
|
len = strcspn(p, " \t");
|
|
if (!len)
|
|
break;
|
|
|
|
snprintf(evname, len + 1, "%s", p);
|
|
|
|
match = 0;
|
|
evlist__for_each(session->evlist, pos) {
|
|
if (!strcmp(perf_evsel__name(pos), evname)) {
|
|
match = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!match) {
|
|
fclose(fp);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
fclose(fp);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Return -1 if none is found, otherwise the actual scripts number.
|
|
*
|
|
* Currently the only user of this function is the script browser, which
|
|
* will list all statically runnable scripts, select one, execute it and
|
|
* show the output in a perf browser.
|
|
*/
|
|
int find_scripts(char **scripts_array, char **scripts_path_array)
|
|
{
|
|
struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
|
|
char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
|
|
DIR *scripts_dir, *lang_dir;
|
|
struct perf_session *session;
|
|
struct perf_data_file file = {
|
|
.path = input_name,
|
|
.mode = PERF_DATA_MODE_READ,
|
|
};
|
|
char *temp;
|
|
int i = 0;
|
|
|
|
session = perf_session__new(&file, false, NULL);
|
|
if (!session)
|
|
return -1;
|
|
|
|
snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
|
|
|
|
scripts_dir = opendir(scripts_path);
|
|
if (!scripts_dir) {
|
|
perf_session__delete(session);
|
|
return -1;
|
|
}
|
|
|
|
for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
|
|
snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
|
|
lang_dirent.d_name);
|
|
#ifdef NO_LIBPERL
|
|
if (strstr(lang_path, "perl"))
|
|
continue;
|
|
#endif
|
|
#ifdef NO_LIBPYTHON
|
|
if (strstr(lang_path, "python"))
|
|
continue;
|
|
#endif
|
|
|
|
lang_dir = opendir(lang_path);
|
|
if (!lang_dir)
|
|
continue;
|
|
|
|
for_each_script(lang_path, lang_dir, script_dirent, script_next) {
|
|
/* Skip those real time scripts: xxxtop.p[yl] */
|
|
if (strstr(script_dirent.d_name, "top."))
|
|
continue;
|
|
sprintf(scripts_path_array[i], "%s/%s", lang_path,
|
|
script_dirent.d_name);
|
|
temp = strchr(script_dirent.d_name, '.');
|
|
snprintf(scripts_array[i],
|
|
(temp - script_dirent.d_name) + 1,
|
|
"%s", script_dirent.d_name);
|
|
|
|
if (check_ev_match(lang_path,
|
|
scripts_array[i], session))
|
|
continue;
|
|
|
|
i++;
|
|
}
|
|
closedir(lang_dir);
|
|
}
|
|
|
|
closedir(scripts_dir);
|
|
perf_session__delete(session);
|
|
return i;
|
|
}
|
|
|
|
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 int have_cmd(int argc, const char **argv)
|
|
{
|
|
char **__argv = malloc(sizeof(const char *) * argc);
|
|
|
|
if (!__argv) {
|
|
pr_err("malloc failed\n");
|
|
return -1;
|
|
}
|
|
|
|
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);
|
|
|
|
system_wide = (argc == 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void script__setup_sample_type(struct perf_script *script)
|
|
{
|
|
struct perf_session *session = script->session;
|
|
u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
|
|
|
|
if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
|
|
if ((sample_type & PERF_SAMPLE_REGS_USER) &&
|
|
(sample_type & PERF_SAMPLE_STACK_USER))
|
|
callchain_param.record_mode = CALLCHAIN_DWARF;
|
|
else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
|
|
callchain_param.record_mode = CALLCHAIN_LBR;
|
|
else
|
|
callchain_param.record_mode = CALLCHAIN_FP;
|
|
}
|
|
}
|
|
|
|
int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
|
|
{
|
|
bool show_full_info = false;
|
|
bool header = false;
|
|
bool header_only = false;
|
|
bool script_started = false;
|
|
char *rec_script_path = NULL;
|
|
char *rep_script_path = NULL;
|
|
struct perf_session *session;
|
|
struct itrace_synth_opts itrace_synth_opts = { .set = false, };
|
|
char *script_path = NULL;
|
|
const char **__argv;
|
|
int i, j, err = 0;
|
|
struct perf_script script = {
|
|
.tool = {
|
|
.sample = process_sample_event,
|
|
.mmap = perf_event__process_mmap,
|
|
.mmap2 = perf_event__process_mmap2,
|
|
.comm = perf_event__process_comm,
|
|
.exit = perf_event__process_exit,
|
|
.fork = perf_event__process_fork,
|
|
.attr = process_attr,
|
|
.tracing_data = perf_event__process_tracing_data,
|
|
.build_id = perf_event__process_build_id,
|
|
.id_index = perf_event__process_id_index,
|
|
.auxtrace_info = perf_event__process_auxtrace_info,
|
|
.auxtrace = perf_event__process_auxtrace,
|
|
.auxtrace_error = perf_event__process_auxtrace_error,
|
|
.ordered_events = true,
|
|
.ordering_requires_timestamps = true,
|
|
},
|
|
};
|
|
struct perf_data_file file = {
|
|
.mode = PERF_DATA_MODE_READ,
|
|
};
|
|
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_BOOLEAN(0, "header", &header, "Show data header."),
|
|
OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),
|
|
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,period,iregs,flags", parse_output_fields),
|
|
OPT_BOOLEAN('a', "all-cpus", &system_wide,
|
|
"system-wide collection from all CPUs"),
|
|
OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
|
|
"only consider these symbols"),
|
|
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_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
|
|
"only consider symbols in these pids"),
|
|
OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
|
|
"only consider symbols in these tids"),
|
|
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_BOOLEAN('\0', "show-task-events", &script.show_task_events,
|
|
"Show the fork/comm/exit events"),
|
|
OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
|
|
"Show the mmap events"),
|
|
OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,
|
|
"Show context switch events (if recorded)"),
|
|
OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),
|
|
OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
|
|
"Instruction Tracing options",
|
|
itrace_parse_synth_opts),
|
|
OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
|
|
"Show full source file name path for source lines"),
|
|
OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
|
|
"Enable symbol demangling"),
|
|
OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
|
|
"Enable kernel symbol demangling"),
|
|
|
|
OPT_END()
|
|
};
|
|
const char * const script_subcommands[] = { "record", "report", NULL };
|
|
const char *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
|
|
};
|
|
|
|
setup_scripting();
|
|
|
|
argc = parse_options_subcommand(argc, argv, options, script_subcommands, script_usage,
|
|
PARSE_OPT_STOP_AT_NON_OPTION);
|
|
|
|
file.path = input_name;
|
|
|
|
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");
|
|
return -1;
|
|
}
|
|
|
|
pid = fork();
|
|
if (pid < 0) {
|
|
perror("failed to fork");
|
|
return -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) {
|
|
if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
__argv = malloc((argc + 6) * sizeof(const char *));
|
|
if (!__argv) {
|
|
pr_err("malloc failed\n");
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
__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) {
|
|
pr_err("malloc failed\n");
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
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) {
|
|
if (have_cmd(argc - 1, &argv[1]) != 0) {
|
|
err = -1;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
__argv = malloc((argc + 2) * sizeof(const char *));
|
|
if (!__argv) {
|
|
pr_err("malloc failed\n");
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
__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 (!script_name)
|
|
setup_pager();
|
|
|
|
session = perf_session__new(&file, false, &script.tool);
|
|
if (session == NULL)
|
|
return -1;
|
|
|
|
if (header || header_only) {
|
|
perf_session__fprintf_info(session, stdout, show_full_info);
|
|
if (header_only)
|
|
goto out_delete;
|
|
}
|
|
|
|
if (symbol__init(&session->header.env) < 0)
|
|
goto out_delete;
|
|
|
|
script.session = session;
|
|
script__setup_sample_type(&script);
|
|
|
|
session->itrace_synth_opts = &itrace_synth_opts;
|
|
|
|
if (cpu_list) {
|
|
err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
|
|
if (err < 0)
|
|
goto out_delete;
|
|
}
|
|
|
|
if (!no_callchain)
|
|
symbol_conf.use_callchain = true;
|
|
else
|
|
symbol_conf.use_callchain = false;
|
|
|
|
if (session->tevent.pevent &&
|
|
pevent_set_function_resolver(session->tevent.pevent,
|
|
machine__resolve_kernel_addr,
|
|
&session->machines.host) < 0) {
|
|
pr_err("%s: failed to set libtraceevent function resolver\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
if (generate_script_lang) {
|
|
struct stat perf_stat;
|
|
int input;
|
|
|
|
if (output_set_by_user()) {
|
|
fprintf(stderr,
|
|
"custom fields not supported for generated scripts");
|
|
err = -EINVAL;
|
|
goto out_delete;
|
|
}
|
|
|
|
input = open(file.path, O_RDONLY); /* input_name */
|
|
if (input < 0) {
|
|
err = -errno;
|
|
perror("failed to open file");
|
|
goto out_delete;
|
|
}
|
|
|
|
err = fstat(input, &perf_stat);
|
|
if (err < 0) {
|
|
perror("failed to stat file");
|
|
goto out_delete;
|
|
}
|
|
|
|
if (!perf_stat.st_size) {
|
|
fprintf(stderr, "zero-sized file, nothing to do!\n");
|
|
goto out_delete;
|
|
}
|
|
|
|
scripting_ops = script_spec__lookup(generate_script_lang);
|
|
if (!scripting_ops) {
|
|
fprintf(stderr, "invalid language specifier");
|
|
err = -ENOENT;
|
|
goto out_delete;
|
|
}
|
|
|
|
err = scripting_ops->generate_script(session->tevent.pevent,
|
|
"perf-script");
|
|
goto out_delete;
|
|
}
|
|
|
|
if (script_name) {
|
|
err = scripting_ops->start_script(script_name, argc, argv);
|
|
if (err)
|
|
goto out_delete;
|
|
pr_debug("perf script started with script %s\n\n", script_name);
|
|
script_started = true;
|
|
}
|
|
|
|
|
|
err = perf_session__check_output_opt(session);
|
|
if (err < 0)
|
|
goto out_delete;
|
|
|
|
err = __cmd_script(&script);
|
|
|
|
flush_scripting();
|
|
|
|
out_delete:
|
|
perf_session__delete(session);
|
|
|
|
if (script_started)
|
|
cleanup_scripting();
|
|
out:
|
|
return err;
|
|
}
|