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perf top: Use perf_evlist__config()

Browse source 
Using struct perf_record_opts to specify how to configure the evsel
perf_event_attrs.

This gets top closer to record in the way it sets up evsels, with the
aim of sharing more and more to the point that both will be a single
utility.

In this direction top now uses the same callchain option parsing as
record and that brings DWARF callchains to top, something that was
already available for record.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-u03o0bsrqcjgskciso3pvsjr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2012-12-11 16:48:41 -03:00
parent 75d9a10854
commit 2376c67a7b
4 changed files with 79 additions and 157 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
tools/perf/Documentation/perf-top.txt
View file

@ -60,7 +60,7 @@ Default is to monitor all CPUS.
-i::
--inherit::
Child tasks inherit counters, only makes sens with -p option.
Child tasks do not inherit counters.
-k <path>::
--vmlinux=<path>::

204
tools/perf/builtin-top.c
View file

@ -596,7 +596,7 @@ static void *display_thread_tui(void *arg)
* via --uid.
*/
list_for_each_entry(pos, &top->evlist->entries, node)
pos->hists.uid_filter_str = top->target.uid_str;
pos->hists.uid_filter_str = top->record_opts.target.uid_str;
perf_evlist__tui_browse_hists(top->evlist, help, &hbt,
&top->session->header.env);
@ -894,34 +894,13 @@ static void perf_top__start_counters(struct perf_top *top)
{
struct perf_evsel *counter;
struct perf_evlist *evlist = top->evlist;
struct perf_record_opts *opts = &top->record_opts;
if (top->group)
perf_evlist__set_leader(evlist);
perf_evlist__config(evlist, opts);
list_for_each_entry(counter, &evlist->entries, node) {
struct perf_event_attr *attr = &counter->attr;
perf_evsel__set_sample_bit(counter, IP);
perf_evsel__set_sample_bit(counter, TID);
if (top->freq) {
perf_evsel__set_sample_bit(counter, PERIOD);
attr->freq = 1;
attr->sample_freq = top->freq;
}
if (evlist->nr_entries > 1)
perf_evsel__set_sample_id(counter);
if (perf_target__has_cpu(&top->target))
perf_evsel__set_sample_bit(counter, CPU);
if (symbol_conf.use_callchain)
perf_evsel__set_sample_bit(counter, CALLCHAIN);
attr->mmap = 1;
attr->comm = 1;
attr->inherit = top->inherit;
fallback_missing_features:
if (top->exclude_guest_missing)
attr->exclude_guest = attr->exclude_host = 0;
@ -995,7 +974,7 @@ try_again:
}
}
if (perf_evlist__mmap(evlist, top->mmap_pages, false) < 0) {
if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) {
ui__error("Failed to mmap with %d (%s)\n",
errno, strerror(errno));
goto out_err;
@ -1015,7 +994,7 @@ static int perf_top__setup_sample_type(struct perf_top *top)
ui__error("Selected -g but \"sym\" not present in --sort/-s.");
return -EINVAL;
}
} else if (!top->dont_use_callchains && callchain_param.mode != CHAIN_NONE) {
} else if (callchain_param.mode != CHAIN_NONE) {
if (callchain_register_param(&callchain_param) < 0) {
ui__error("Can't register callchain params.\n");
return -EINVAL;
@ -1027,6 +1006,7 @@ static int perf_top__setup_sample_type(struct perf_top *top)
static int __cmd_top(struct perf_top *top)
{
struct perf_record_opts *opts = &top->record_opts;
pthread_t thread;
int ret;
/*
@ -1041,7 +1021,7 @@ static int __cmd_top(struct perf_top *top)
if (ret)
goto out_delete;
if (perf_target__has_task(&top->target))
if (perf_target__has_task(&opts->target))
perf_event__synthesize_thread_map(&top->tool, top->evlist->threads,
perf_event__process,
&top->session->host_machine);
@ -1052,6 +1032,17 @@ static int __cmd_top(struct perf_top *top)
top->session->evlist = top->evlist;
perf_session__set_id_hdr_size(top->session);
/*
* When perf is starting the traced process, all the events (apart from
* group members) have enable_on_exec=1 set, so don't spoil it by
* prematurely enabling them.
*
* XXX 'top' still doesn't start workloads like record, trace, but should,
* so leave the check here.
*/
if (!perf_target__none(&opts->target))
perf_evlist__enable(top->evlist);
/* Wait for a minimal set of events before starting the snapshot */
poll(top->evlist->pollfd, top->evlist->nr_fds, 100);
@ -1092,116 +1083,56 @@ out_delete:
static int
parse_callchain_opt(const struct option *opt, const char *arg, int unset)
{
struct perf_top *top = (struct perf_top *)opt->value;
char *tok, *tok2;
char *endptr;
/*
* --no-call-graph
*/
if (unset) {
top->dont_use_callchains = true;
if (unset)
return 0;
}
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 = false;
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;
/* get the print limit */
tok2 = strtok(NULL, ",");
if (!tok2)
goto setup;
if (tok2[0] != 'c') {
callchain_param.print_limit = strtod(tok2, &endptr);
tok2 = strtok(NULL, ",");
if (!tok2)
goto setup;
}
/* get the call chain order */
if (!strcmp(tok2, "caller"))
callchain_param.order = ORDER_CALLER;
else if (!strcmp(tok2, "callee"))
callchain_param.order = ORDER_CALLEE;
else
return -1;
setup:
if (callchain_register_param(&callchain_param) < 0) {
fprintf(stderr, "Can't register callchain params\n");
return -1;
}
return 0;
return record_parse_callchain_opt(opt, arg, unset);
}
int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
{
struct perf_evsel *pos;
int status;
char errbuf[BUFSIZ];
struct perf_top top = {
.count_filter = 5,
.delay_secs = 2,
.freq = 4000, /* 4 KHz */
.mmap_pages = 128,
.sym_pcnt_filter = 5,
.target = {
.uses_mmap = true,
.record_opts = {
.mmap_pages = UINT_MAX,
.user_freq = UINT_MAX,
.user_interval = ULLONG_MAX,
.freq = 4000, /* 4 KHz */
.target = {
.uses_mmap = true,
},
},
.sym_pcnt_filter = 5,
};
char callchain_default_opt[] = "fractal,0.5,callee";
struct perf_record_opts *opts = &top.record_opts;
struct perf_target *target = &opts->target;
const struct option options[] = {
OPT_CALLBACK('e', "event", &top.evlist, "event",
"event selector. use 'perf list' to list available events",
parse_events_option),
OPT_INTEGER('c', "count", &top.default_interval,
"event period to sample"),
OPT_STRING('p', "pid", &top.target.pid, "pid",
OPT_U64('c', "count", &opts->user_interval, "event period to sample"),
OPT_STRING('p', "pid", &target->pid, "pid",
"profile events on existing process id"),
OPT_STRING('t', "tid", &top.target.tid, "tid",
OPT_STRING('t', "tid", &target->tid, "tid",
"profile events on existing thread id"),
OPT_BOOLEAN('a', "all-cpus", &top.target.system_wide,
OPT_BOOLEAN('a', "all-cpus", &target->system_wide,
"system-wide collection from all CPUs"),
OPT_STRING('C', "cpu", &top.target.cpu_list, "cpu",
OPT_STRING('C', "cpu", &target->cpu_list, "cpu",
"list of cpus to monitor"),
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols,
"hide kernel symbols"),
OPT_UINTEGER('m', "mmap-pages", &top.mmap_pages, "number of mmap data pages"),
OPT_UINTEGER('m', "mmap-pages", &opts->mmap_pages,
"number of mmap data pages"),
OPT_INTEGER('r', "realtime", &top.realtime_prio,
"collect data with this RT SCHED_FIFO priority"),
OPT_INTEGER('d', "delay", &top.delay_secs,
@ -1210,16 +1141,14 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
"dump the symbol table used for profiling"),
OPT_INTEGER('f', "count-filter", &top.count_filter,
"only display functions with more events than this"),
OPT_BOOLEAN('g', "group", &top.group,
OPT_BOOLEAN('g', "group", &opts->group,
"put the counters into a counter group"),
OPT_BOOLEAN('i', "inherit", &top.inherit,
"child tasks inherit counters"),
OPT_BOOLEAN('i', "no-inherit", &opts->no_inherit,
"child tasks do not inherit counters"),
OPT_STRING(0, "sym-annotate", &top.sym_filter, "symbol name",
"symbol to annotate"),
OPT_BOOLEAN('z', "zero", &top.zero,
"zero history across updates"),
OPT_INTEGER('F', "freq", &top.freq,
"profile at this frequency"),
OPT_BOOLEAN('z', "zero", &top.zero, "zero history across updates"),
OPT_UINTEGER('F', "freq", &opts->user_freq, "profile at this frequency"),
OPT_INTEGER('E', "entries", &top.print_entries,
"display this many functions"),
OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols,
@ -1232,10 +1161,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
"sort by key(s): pid, comm, dso, symbol, parent"),
OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
"Show a column with the number of samples"),
OPT_CALLBACK_DEFAULT('G', "call-graph", &top, "output_type,min_percent, call_order",
"Display callchains using output_type (graph, flat, fractal, or none), min percent threshold and callchain order. "
"Default: fractal,0.5,callee", &parse_callchain_opt,
callchain_default_opt),
OPT_CALLBACK_DEFAULT('G', "call-graph", &top.record_opts,
"mode[,dump_size]", record_callchain_help,
&parse_callchain_opt, "fp"),
OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
"Show a column with the sum of periods"),
OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
@ -1250,7 +1178,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
"Display raw encoding of assembly instructions (default)"),
OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
"Specify disassembler style (e.g. -M intel for intel syntax)"),
OPT_STRING('u', "uid", &top.target.uid_str, "user", "user to profile"),
OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"),
OPT_END()
};
const char * const top_usage[] = {
@ -1280,27 +1208,27 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
setup_browser(false);
status = perf_target__validate(&top.target);
status = perf_target__validate(target);
if (status) {
perf_target__strerror(&top.target, status, errbuf, BUFSIZ);
perf_target__strerror(target, status, errbuf, BUFSIZ);
ui__warning("%s", errbuf);
}
status = perf_target__parse_uid(&top.target);
status = perf_target__parse_uid(target);
if (status) {
int saved_errno = errno;
perf_target__strerror(&top.target, status, errbuf, BUFSIZ);
perf_target__strerror(target, status, errbuf, BUFSIZ);
ui__error("%s", errbuf);
status = -saved_errno;
goto out_delete_evlist;
}
if (perf_target__none(&top.target))
top.target.system_wide = true;
if (perf_target__none(target))
target->system_wide = true;
if (perf_evlist__create_maps(top.evlist, &top.target) < 0)
if (perf_evlist__create_maps(top.evlist, target) < 0)
usage_with_options(top_usage, options);
if (!top.evlist->nr_entries &&
@ -1314,24 +1242,22 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
if (top.delay_secs < 1)
top.delay_secs = 1;
if (opts->user_interval != ULLONG_MAX)
opts->default_interval = opts->user_interval;
if (opts->user_freq != UINT_MAX)
opts->freq = opts->user_freq;
/*
* User specified count overrides default frequency.
*/
if (top.default_interval)
top.freq = 0;
else if (top.freq) {
top.default_interval = top.freq;
if (opts->default_interval)
opts->freq = 0;
else if (opts->freq) {
opts->default_interval = opts->freq;
} else {
ui__error("frequency and count are zero, aborting\n");
exit(EXIT_FAILURE);
}
list_for_each_entry(pos, &top.evlist->entries, node) {
/*
* Fill in the ones not specifically initialized via -c:
*/
if (!pos->attr.sample_period)
pos->attr.sample_period = top.default_interval;
status = -EINVAL;
goto out_delete_evlist;
}
top.sym_evsel = perf_evlist__first(top.evlist);

22
tools/perf/util/top.c
View file

@ -26,6 +26,8 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
float samples_per_sec = top->samples / top->delay_secs;
float ksamples_per_sec = top->kernel_samples / top->delay_secs;
float esamples_percent = (100.0 * top->exact_samples) / top->samples;
struct perf_record_opts *opts = &top->record_opts;
struct perf_target *target = &opts->target;
size_t ret = 0;
if (!perf_guest) {
@ -61,31 +63,31 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
struct perf_evsel *first = perf_evlist__first(top->evlist);
ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
(uint64_t)first->attr.sample_period,
top->freq ? "Hz" : "");
opts->freq ? "Hz" : "");
}
ret += SNPRINTF(bf + ret, size - ret, "%s", perf_evsel__name(top->sym_evsel));
ret += SNPRINTF(bf + ret, size - ret, "], ");
if (top->target.pid)
if (target->pid)
ret += SNPRINTF(bf + ret, size - ret, " (target_pid: %s",
top->target.pid);
else if (top->target.tid)
target->pid);
else if (target->tid)
ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %s",
top->target.tid);
else if (top->target.uid_str != NULL)
target->tid);
else if (target->uid_str != NULL)
ret += SNPRINTF(bf + ret, size - ret, " (uid: %s",
top->target.uid_str);
target->uid_str);
else
ret += SNPRINTF(bf + ret, size - ret, " (all");
if (top->target.cpu_list)
if (target->cpu_list)
ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)",
top->evlist->cpus->nr > 1 ? "s" : "",
top->target.cpu_list);
target->cpu_list);
else {
if (top->target.tid)
if (target->tid)
ret += SNPRINTF(bf + ret, size - ret, ")");
else
ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)",

8
tools/perf/util/top.h
View file

@ -14,7 +14,7 @@ struct perf_session;
struct perf_top {
struct perf_tool tool;
struct perf_evlist *evlist;
struct perf_target target;
struct perf_record_opts record_opts;
/*
* Symbols will be added here in perf_event__process_sample and will
* get out after decayed.
@ -24,15 +24,11 @@ struct perf_top {
u64 exact_samples;
u64 guest_us_samples, guest_kernel_samples;
int print_entries, count_filter, delay_secs;
int freq;
bool hide_kernel_symbols, hide_user_symbols, zero;
bool use_tui, use_stdio;
bool sort_has_symbols;
bool dont_use_callchains;
bool kptr_restrict_warned;
bool vmlinux_warned;
bool inherit;
bool group;
bool sample_id_all_missing;
bool exclude_guest_missing;
bool dump_symtab;
@ -40,8 +36,6 @@ struct perf_top {
struct perf_evsel *sym_evsel;
struct perf_session *session;
struct winsize winsize;
unsigned int mmap_pages;
int default_interval;
int realtime_prio;
int sym_pcnt_filter;
const char *sym_filter;