linux/tools/perf/builtin-report.c
Arnaldo Carvalho de Melo 0422a4fc2c perf diff: Fix usage array, it must end with a NULL entry
Fixing this:

 [acme@doppio linux-2.6-tip]$ perf diff --hell
   Error: unknown option `hell'

  usage: perf diff [<options>] [old_file] [new_file]
 Segmentation fault
 [acme@doppio linux-2.6-tip]$

Also go over the other such arrays to check if they all were OK,
they are, but there were some minor changes to do like making
one static and renaming another to match the command it refers
to.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1261161358-23959-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-18 20:01:52 +01:00

374 lines
10 KiB
C

/*
* builtin-report.c
*
* Builtin report command: Analyze the perf.data input file,
* look up and read DSOs and symbol information and display
* a histogram of results, along various sorting keys.
*/
#include "builtin.h"
#include "util/util.h"
#include "util/color.h"
#include <linux/list.h>
#include "util/cache.h"
#include <linux/rbtree.h>
#include "util/symbol.h"
#include "util/string.h"
#include "util/callchain.h"
#include "util/strlist.h"
#include "util/values.h"
#include "perf.h"
#include "util/debug.h"
#include "util/header.h"
#include "util/session.h"
#include "util/parse-options.h"
#include "util/parse-events.h"
#include "util/thread.h"
#include "util/sort.h"
#include "util/hist.h"
static char const *input_name = "perf.data";
static int force;
static int show_threads;
static struct perf_read_values show_threads_values;
static char default_pretty_printing_style[] = "normal";
static char *pretty_printing_style = default_pretty_printing_style;
static char callchain_default_opt[] = "fractal,0.5";
static int perf_session__add_hist_entry(struct perf_session *self,
struct addr_location *al,
struct ip_callchain *chain, u64 count)
{
struct symbol **syms = NULL, *parent = NULL;
bool hit;
struct hist_entry *he;
if ((sort__has_parent || symbol_conf.use_callchain) && chain)
syms = perf_session__resolve_callchain(self, al->thread,
chain, &parent);
he = __perf_session__add_hist_entry(self, al, parent, count, &hit);
if (he == NULL)
return -ENOMEM;
if (hit)
he->count += count;
if (symbol_conf.use_callchain) {
if (!hit)
callchain_init(&he->callchain);
append_chain(&he->callchain, chain, syms);
free(syms);
}
return 0;
}
static int validate_chain(struct ip_callchain *chain, event_t *event)
{
unsigned int chain_size;
chain_size = event->header.size;
chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
if (chain->nr*sizeof(u64) > chain_size)
return -1;
return 0;
}
static int process_sample_event(event_t *event, struct perf_session *session)
{
struct sample_data data = { .period = 1, };
struct addr_location al;
event__parse_sample(event, session->sample_type, &data);
dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
event->header.misc,
data.pid, data.tid,
(void *)(long)data.ip,
(long long)data.period);
if (session->sample_type & PERF_SAMPLE_CALLCHAIN) {
unsigned int i;
dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
if (validate_chain(data.callchain, event) < 0) {
pr_debug("call-chain problem with event, "
"skipping it.\n");
return 0;
}
if (dump_trace) {
for (i = 0; i < data.callchain->nr; i++)
dump_printf("..... %2d: %016Lx\n",
i, data.callchain->ips[i]);
}
}
if (event__preprocess_sample(event, session, &al, NULL) < 0) {
fprintf(stderr, "problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
if (al.filtered)
return 0;
if (perf_session__add_hist_entry(session, &al, data.callchain, data.period)) {
pr_debug("problem incrementing symbol count, skipping event\n");
return -1;
}
session->events_stats.total += data.period;
return 0;
}
static int process_read_event(event_t *event, struct perf_session *session __used)
{
struct perf_event_attr *attr;
attr = perf_header__find_attr(event->read.id, &session->header);
if (show_threads) {
const char *name = attr ? __event_name(attr->type, attr->config)
: "unknown";
perf_read_values_add_value(&show_threads_values,
event->read.pid, event->read.tid,
event->read.id,
name,
event->read.value);
}
dump_printf(": %d %d %s %Lu\n", event->read.pid, event->read.tid,
attr ? __event_name(attr->type, attr->config) : "FAIL",
event->read.value);
return 0;
}
static int sample_type_check(struct perf_session *session)
{
if (!(session->sample_type & PERF_SAMPLE_CALLCHAIN)) {
if (sort__has_parent) {
fprintf(stderr, "selected --sort parent, but no"
" callchain data. Did you call"
" perf record without -g?\n");
return -1;
}
if (symbol_conf.use_callchain) {
fprintf(stderr, "selected -g but no callchain data."
" Did you call perf record without"
" -g?\n");
return -1;
}
} else if (callchain_param.mode != CHAIN_NONE && !symbol_conf.use_callchain) {
symbol_conf.use_callchain = true;
if (register_callchain_param(&callchain_param) < 0) {
fprintf(stderr, "Can't register callchain"
" params\n");
return -1;
}
}
return 0;
}
static struct perf_event_ops event_ops = {
.process_sample_event = process_sample_event,
.process_mmap_event = event__process_mmap,
.process_comm_event = event__process_comm,
.process_exit_event = event__process_task,
.process_fork_event = event__process_task,
.process_lost_event = event__process_lost,
.process_read_event = process_read_event,
.sample_type_check = sample_type_check,
};
static int __cmd_report(void)
{
int ret;
struct perf_session *session;
session = perf_session__new(input_name, O_RDONLY, force);
if (session == NULL)
return -ENOMEM;
if (show_threads)
perf_read_values_init(&show_threads_values);
ret = perf_session__process_events(session, &event_ops);
if (ret)
goto out_delete;
if (dump_trace) {
event__print_totals();
goto out_delete;
}
if (verbose > 3)
perf_session__fprintf(session, stdout);
if (verbose > 2)
dsos__fprintf(stdout);
perf_session__collapse_resort(session);
perf_session__output_resort(session, session->events_stats.total);
fprintf(stdout, "# Samples: %Ld\n#\n", session->events_stats.total);
perf_session__fprintf_hists(session, NULL, false, stdout);
if (sort_order == default_sort_order &&
parent_pattern == default_parent_pattern)
fprintf(stdout, "#\n# (For a higher level overview, try: perf report --sort comm,dso)\n#\n");
if (show_threads) {
bool raw_printing_style = !strcmp(pretty_printing_style, "raw");
perf_read_values_display(stdout, &show_threads_values,
raw_printing_style);
perf_read_values_destroy(&show_threads_values);
}
out_delete:
perf_session__delete(session);
return ret;
}
static int
parse_callchain_opt(const struct option *opt __used, const char *arg,
int unset __used)
{
char *tok;
char *endptr;
symbol_conf.use_callchain = true;
if (!arg)
return 0;
tok = strtok((char *)arg, ",");
if (!tok)
return -1;
/* get the output mode */
if (!strncmp(tok, "graph", strlen(arg)))
callchain_param.mode = CHAIN_GRAPH_ABS;
else if (!strncmp(tok, "flat", strlen(arg)))
callchain_param.mode = CHAIN_FLAT;
else if (!strncmp(tok, "fractal", strlen(arg)))
callchain_param.mode = CHAIN_GRAPH_REL;
else if (!strncmp(tok, "none", strlen(arg))) {
callchain_param.mode = CHAIN_NONE;
symbol_conf.use_callchain = true;
return 0;
}
else
return -1;
/* get the min percentage */
tok = strtok(NULL, ",");
if (!tok)
goto setup;
callchain_param.min_percent = strtod(tok, &endptr);
if (tok == endptr)
return -1;
setup:
if (register_callchain_param(&callchain_param) < 0) {
fprintf(stderr, "Can't register callchain params\n");
return -1;
}
return 0;
}
static const char * const report_usage[] = {
"perf report [<options>] <command>",
NULL
};
static const struct option options[] = {
OPT_STRING('i', "input", &input_name, "file",
"input file name"),
OPT_BOOLEAN('v', "verbose", &verbose,
"be more verbose (show symbol address, etc)"),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
"Show a column with the number of samples"),
OPT_BOOLEAN('T', "threads", &show_threads,
"Show per-thread event counters"),
OPT_STRING(0, "pretty", &pretty_printing_style, "key",
"pretty printing style key: normal raw"),
OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
"sort by key(s): pid, comm, dso, symbol, parent"),
OPT_BOOLEAN('P', "full-paths", &event_ops.full_paths,
"Don't shorten the pathnames taking into account the cwd"),
OPT_STRING('p', "parent", &parent_pattern, "regex",
"regex filter to identify parent, see: '--sort parent'"),
OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
"Only display entries with parent-match"),
OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
"Display callchains using output_type and min percent threshold. "
"Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
"only consider symbols in these dsos"),
OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
"only consider symbols in these comms"),
OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
"only consider these symbols"),
OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
"width[,width...]",
"don't try to adjust column width, use these fixed values"),
OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
"separator for columns, no spaces will be added between "
"columns '.' is reserved."),
OPT_END()
};
int cmd_report(int argc, const char **argv, const char *prefix __used)
{
argc = parse_options(argc, argv, options, report_usage, 0);
setup_pager();
if (symbol__init() < 0)
return -1;
setup_sorting(report_usage, options);
if (parent_pattern != default_parent_pattern) {
sort_dimension__add("parent");
sort_parent.elide = 1;
} else
symbol_conf.exclude_other = false;
/*
* Any (unrecognized) arguments left?
*/
if (argc)
usage_with_options(report_usage, options);
sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
return __cmd_report();
}