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When looking at PT or brstackinsn traces with 'perf script' it can be very useful to see the source code. This adds a simple facility to print them with 'perf script', if the information is available through dwarf % perf record ... % perf script -F insn,ip,sym,srccode ... 4004c6 main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004c6 main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004cd main 5 for (i = 0; i < 10000000; i++) 4004b3 main 6 v++; % perf record -b ... % perf script -F insn,ip,sym,srccode,brstackinsn ... main+22: 0000000000400543 insn: e8 ca ff ff ff # PRED |18 f1(); f1: 0000000000400512 insn: 55 |10 { 0000000000400513 insn: 48 89 e5 0000000000400516 insn: b8 00 00 00 00 |11 f2(); 000000000040051b insn: e8 d6 ff ff ff # PRED f2: 00000000004004f6 insn: 55 |5 { 00000000004004f7 insn: 48 89 e5 00000000004004fa insn: 8b 05 2c 0b 20 00 |6 c = a / b; 0000000000400500 insn: 8b 0d 2a 0b 20 00 0000000000400506 insn: 99 0000000000400507 insn: f7 f9 0000000000400509 insn: 89 05 29 0b 20 00 000000000040050f insn: 90 |7 } 0000000000400510 insn: 5d 0000000000400511 insn: c3 # PRED f1+14: 0000000000400520 insn: b8 00 00 00 00 |12 f2(); 0000000000400525 insn: e8 cc ff ff ff # PRED f2: 00000000004004f6 insn: 55 |5 { 00000000004004f7 insn: 48 89 e5 00000000004004fa insn: 8b 05 2c 0b 20 00 |6 c = a / b; Not supported for callchains currently, would need some layout changes there. Committer notes: Fixed the build on Alpine Linux (3.4 .. 3.8) by addressing this warning: In file included from util/srccode.c:19:0: /usr/include/sys/fcntl.h:1:2: error: #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> [-Werror=cpp] #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> ^~~~~~~ cc1: all warnings being treated as errors Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20181204001848.24769-1-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
238 lines
5.9 KiB
C
238 lines
5.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <traceevent/event-parse.h>
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#include "evsel.h"
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#include "callchain.h"
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#include "map.h"
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#include "strlist.h"
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#include "symbol.h"
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#include "srcline.h"
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static int comma_fprintf(FILE *fp, bool *first, const char *fmt, ...)
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{
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va_list args;
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int ret = 0;
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if (!*first) {
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ret += fprintf(fp, ",");
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} else {
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ret += fprintf(fp, ":");
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*first = false;
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}
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va_start(args, fmt);
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ret += vfprintf(fp, fmt, args);
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va_end(args);
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return ret;
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}
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static int __print_attr__fprintf(FILE *fp, const char *name, const char *val, void *priv)
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{
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return comma_fprintf(fp, (bool *)priv, " %s: %s", name, val);
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}
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int perf_evsel__fprintf(struct perf_evsel *evsel,
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struct perf_attr_details *details, FILE *fp)
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{
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bool first = true;
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int printed = 0;
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if (details->event_group) {
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struct perf_evsel *pos;
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if (!perf_evsel__is_group_leader(evsel))
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return 0;
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if (evsel->nr_members > 1)
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printed += fprintf(fp, "%s{", evsel->group_name ?: "");
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printed += fprintf(fp, "%s", perf_evsel__name(evsel));
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for_each_group_member(pos, evsel)
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printed += fprintf(fp, ",%s", perf_evsel__name(pos));
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if (evsel->nr_members > 1)
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printed += fprintf(fp, "}");
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goto out;
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}
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printed += fprintf(fp, "%s", perf_evsel__name(evsel));
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if (details->verbose) {
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printed += perf_event_attr__fprintf(fp, &evsel->attr,
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__print_attr__fprintf, &first);
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} else if (details->freq) {
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const char *term = "sample_freq";
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if (!evsel->attr.freq)
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term = "sample_period";
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printed += comma_fprintf(fp, &first, " %s=%" PRIu64,
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term, (u64)evsel->attr.sample_freq);
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}
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if (details->trace_fields) {
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struct tep_format_field *field;
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if (evsel->attr.type != PERF_TYPE_TRACEPOINT) {
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printed += comma_fprintf(fp, &first, " (not a tracepoint)");
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goto out;
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}
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field = evsel->tp_format->format.fields;
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if (field == NULL) {
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printed += comma_fprintf(fp, &first, " (no trace field)");
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goto out;
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}
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printed += comma_fprintf(fp, &first, " trace_fields: %s", field->name);
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field = field->next;
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while (field) {
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printed += comma_fprintf(fp, &first, "%s", field->name);
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field = field->next;
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}
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}
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out:
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fputc('\n', fp);
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return ++printed;
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}
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int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
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unsigned int print_opts, struct callchain_cursor *cursor,
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FILE *fp)
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{
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int printed = 0;
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struct callchain_cursor_node *node;
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int print_ip = print_opts & EVSEL__PRINT_IP;
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int print_sym = print_opts & EVSEL__PRINT_SYM;
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int print_dso = print_opts & EVSEL__PRINT_DSO;
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int print_symoffset = print_opts & EVSEL__PRINT_SYMOFFSET;
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int print_oneline = print_opts & EVSEL__PRINT_ONELINE;
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int print_srcline = print_opts & EVSEL__PRINT_SRCLINE;
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int print_unknown_as_addr = print_opts & EVSEL__PRINT_UNKNOWN_AS_ADDR;
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int print_arrow = print_opts & EVSEL__PRINT_CALLCHAIN_ARROW;
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int print_skip_ignored = print_opts & EVSEL__PRINT_SKIP_IGNORED;
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char s = print_oneline ? ' ' : '\t';
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bool first = true;
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if (sample->callchain) {
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struct addr_location node_al;
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callchain_cursor_commit(cursor);
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while (1) {
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u64 addr = 0;
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node = callchain_cursor_current(cursor);
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if (!node)
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break;
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if (node->sym && node->sym->ignore && print_skip_ignored)
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goto next;
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printed += fprintf(fp, "%-*.*s", left_alignment, left_alignment, " ");
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if (print_arrow && !first)
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printed += fprintf(fp, " <-");
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if (print_ip)
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printed += fprintf(fp, "%c%16" PRIx64, s, node->ip);
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if (node->map)
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addr = node->map->map_ip(node->map, node->ip);
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if (print_sym) {
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printed += fprintf(fp, " ");
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node_al.addr = addr;
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node_al.map = node->map;
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if (print_symoffset) {
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printed += __symbol__fprintf_symname_offs(node->sym, &node_al,
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print_unknown_as_addr,
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true, fp);
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} else {
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printed += __symbol__fprintf_symname(node->sym, &node_al,
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print_unknown_as_addr, fp);
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}
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}
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if (print_dso && (!node->sym || !node->sym->inlined)) {
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printed += fprintf(fp, " (");
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printed += map__fprintf_dsoname(node->map, fp);
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printed += fprintf(fp, ")");
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}
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if (print_srcline)
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printed += map__fprintf_srcline(node->map, addr, "\n ", fp);
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if (node->sym && node->sym->inlined)
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printed += fprintf(fp, " (inlined)");
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if (!print_oneline)
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printed += fprintf(fp, "\n");
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/* Add srccode here too? */
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if (symbol_conf.bt_stop_list &&
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node->sym &&
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strlist__has_entry(symbol_conf.bt_stop_list,
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node->sym->name)) {
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break;
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}
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first = false;
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next:
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callchain_cursor_advance(cursor);
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}
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}
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return printed;
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}
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int sample__fprintf_sym(struct perf_sample *sample, struct addr_location *al,
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int left_alignment, unsigned int print_opts,
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struct callchain_cursor *cursor, FILE *fp)
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{
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int printed = 0;
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int print_ip = print_opts & EVSEL__PRINT_IP;
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int print_sym = print_opts & EVSEL__PRINT_SYM;
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int print_dso = print_opts & EVSEL__PRINT_DSO;
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int print_symoffset = print_opts & EVSEL__PRINT_SYMOFFSET;
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int print_srcline = print_opts & EVSEL__PRINT_SRCLINE;
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int print_unknown_as_addr = print_opts & EVSEL__PRINT_UNKNOWN_AS_ADDR;
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if (cursor != NULL) {
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printed += sample__fprintf_callchain(sample, left_alignment,
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print_opts, cursor, fp);
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} else {
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printed += fprintf(fp, "%-*.*s", left_alignment, left_alignment, " ");
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if (print_ip)
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printed += fprintf(fp, "%16" PRIx64, sample->ip);
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if (print_sym) {
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printed += fprintf(fp, " ");
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if (print_symoffset) {
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printed += __symbol__fprintf_symname_offs(al->sym, al,
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print_unknown_as_addr,
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true, fp);
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} else {
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printed += __symbol__fprintf_symname(al->sym, al,
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print_unknown_as_addr, fp);
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}
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}
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if (print_dso) {
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printed += fprintf(fp, " (");
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printed += map__fprintf_dsoname(al->map, fp);
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printed += fprintf(fp, ")");
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}
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if (print_srcline)
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printed += map__fprintf_srcline(al->map, al->addr, "\n ", fp);
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}
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return printed;
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}
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