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Commit ab81f3fd authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf top: Reuse the 'report' hist_entry/hists classes

This actually fixes several problems we had in the old 'perf top':

1. Unresolved symbols not show, limitation that came from the old
   "KernelTop" codebase, to solve it we would need to do changes
   that would make sym_entry have most of the hist_entry fields.
2. It was using the number of samples, not the sum of sample->period.

And brings the --sort code that allows us to have all the views in
'perf report', for instance:

[root@emilia ~]# perf top --sort dso
PerfTop: 5903 irqs/sec kernel:77.5% exact: 0.0% [1000Hz cycles], (all, 8 CPUs)
------------------------------------------------------------------------------

    31.59%  libcrypto.so.1.0.0
    21.55%  [kernel]
    18.57%  libpython2.6.so.1.0
     7.04%  libc-2.12.so
     6.99%  _backend_agg.so
     4.72%  sshd
     1.48%  multiarray.so
     1.39%  libfreetype.so.6.3.22
     1.37%  perf
     0.71%  libgobject-2.0.so.0.2200.5
     0.53%  [tg3]
     0.48%  libglib-2.0.so.0.2200.5
     0.44%  libstdc++.so.6.0.13
     0.40%  libcairo.so.2.10800.8
     0.38%  libm-2.12.so
     0.34%  umath.so
     0.30%  libgdk-x11-2.0.so.0.1800.9
     0.22%  libpthread-2.12.so
     0.20%  libgtk-x11-2.0.so.0.1800.9
     0.20%  librt-2.12.so
     0.15%  _path.so
     0.13%  libpango-1.0.so.0.2800.1
     0.11%  libatlas.so.3.0
     0.09%  ft2font.so
     0.09%  libpangoft2-1.0.so.0.2800.1
     0.08%  libX11.so.6.3.0
     0.07%  [vdso]
     0.06%  cyclictest
^C

All the filter lists can be used as well: --dsos, --comms, --symbols,
etc.

The 'perf report' TUI is also reused, being possible to apply all the
zoom operations, do annotation, etc.

This change will allow multiple simplifications in the symbol system as
well, that will be detailed in upcoming changesets.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
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-xzaaldxq7zhqrrxdxjifk1mh@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 81cce8de
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+20 −3
Original line number Diff line number Diff line
@@ -106,6 +106,26 @@ Default is to monitor all CPUS.
--zero::
	Zero history across display updates.

-s::
--sort::
	Sort by key(s): pid, comm, dso, symbol, parent

-n::
--show-nr-samples::
	Show a column with the number of samples.

--show-total-period::
	Show a column with the sum of periods.

--dsos::
	Only consider symbols in these dsos.

--comms::
	Only consider symbols in these comms.

--symbols::
	Only consider these symbols.

INTERACTIVE PROMPTING KEYS
--------------------------

@@ -130,9 +150,6 @@ INTERACTIVE PROMPTING KEYS
[S]::
	Stop annotation, return to full profile display.

[w]::
	Toggle between weighted sum and individual count[E]r profile.

[z]::
	Toggle event count zeroing across display updates.

+0 −4
Original line number Diff line number Diff line
@@ -466,7 +466,6 @@ else
		LIB_OBJS += $(OUTPUT)util/ui/browsers/annotate.o
		LIB_OBJS += $(OUTPUT)util/ui/browsers/hists.o
		LIB_OBJS += $(OUTPUT)util/ui/browsers/map.o
		LIB_OBJS += $(OUTPUT)util/ui/browsers/top.o
		LIB_OBJS += $(OUTPUT)util/ui/helpline.o
		LIB_OBJS += $(OUTPUT)util/ui/progress.o
		LIB_OBJS += $(OUTPUT)util/ui/util.o
@@ -729,9 +728,6 @@ $(OUTPUT)util/ui/browser.o: util/ui/browser.c $(OUTPUT)PERF-CFLAGS
$(OUTPUT)util/ui/browsers/annotate.o: util/ui/browsers/annotate.c $(OUTPUT)PERF-CFLAGS
	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<

$(OUTPUT)util/ui/browsers/top.o: util/ui/browsers/top.c $(OUTPUT)PERF-CFLAGS
	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<

$(OUTPUT)util/ui/browsers/hists.o: util/ui/browsers/hists.c $(OUTPUT)PERF-CFLAGS
	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<

+119 −163
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@
 * any workload, CPU or specific PID.
 *
 * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
 *		 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
 *
 * Improvements and fixes by:
 *
@@ -36,6 +37,7 @@
#include "util/parse-events.h"
#include "util/cpumap.h"
#include "util/xyarray.h"
#include "util/sort.h"

#include "util/debug.h"

@@ -65,12 +67,8 @@
static struct perf_top top = {
	.count_filter		= 5,
	.delay_secs		= 2,
	.display_weighted	= -1,
	.target_pid		= -1,
	.target_tid		= -1,
	.active_symbols		= LIST_HEAD_INIT(top.active_symbols),
	.active_symbols_lock	= PTHREAD_MUTEX_INITIALIZER,
	.active_symbols_cond	= PTHREAD_COND_INITIALIZER,
	.freq			= 1000, /* 1 KHz */
};

@@ -85,7 +83,6 @@ static bool vmlinux_warned;
static bool			inherit				=  false;
static int			realtime_prio			=      0;
static bool			group				=  false;
static unsigned int		page_size;
static unsigned int		mmap_pages			=    128;

static bool			dump_symtab                     =  false;
@@ -93,7 +90,6 @@ static bool dump_symtab = false;
static struct winsize		winsize;

static const char		*sym_filter			=   NULL;
struct sym_entry		*sym_filter_entry_sched		=   NULL;
static int			sym_pcnt_filter			=      5;

/*
@@ -136,18 +132,18 @@ static void sig_winch_handler(int sig __used)
	update_print_entries(&winsize);
}

static int parse_source(struct sym_entry *syme)
static int parse_source(struct hist_entry *he)
{
	struct symbol *sym;
	struct annotation *notes;
	struct map *map;
	int err = -1;

	if (!syme)
	if (!he || !he->ms.sym)
		return -1;

	sym = sym_entry__symbol(syme);
	map = syme->map;
	sym = he->ms.sym;
	map = he->ms.map;

	/*
	 * We can't annotate with just /proc/kallsyms
@@ -175,53 +171,62 @@ static int parse_source(struct sym_entry *syme)
		return err;
	}

	err = symbol__annotate(sym, syme->map, 0);
	err = symbol__annotate(sym, map, 0);
	if (err == 0) {
out_assign:
		top.sym_filter_entry = syme;
		top.sym_filter_entry = he;
	}

	pthread_mutex_unlock(&notes->lock);
	return err;
}

static void __zero_source_counters(struct sym_entry *syme)
static void __zero_source_counters(struct hist_entry *he)
{
	struct symbol *sym = sym_entry__symbol(syme);
	struct symbol *sym = he->ms.sym;
	symbol__annotate_zero_histograms(sym);
}

static void record_precise_ip(struct sym_entry *syme, struct map *map,
			      int counter, u64 ip)
static void record_precise_ip(struct hist_entry *he, int counter, u64 ip)
{
	struct annotation *notes;
	struct symbol *sym;

	if (syme != top.sym_filter_entry)
	if (he == NULL || he->ms.sym == NULL ||
	    (he != top.sym_filter_entry && use_browser != 1))
		return;

	sym = sym_entry__symbol(syme);
	sym = he->ms.sym;
	notes = symbol__annotation(sym);

	if (pthread_mutex_trylock(&notes->lock))
		return;

	ip = map->map_ip(map, ip);
	symbol__inc_addr_samples(sym, map, counter, ip);
	if (notes->src == NULL &&
	    symbol__alloc_hist(sym, top.evlist->nr_entries) < 0) {
		pthread_mutex_unlock(&notes->lock);
		pr_err("Not enough memory for annotating '%s' symbol!\n",
		       sym->name);
		sleep(1);
		return;
	}

	ip = he->ms.map->map_ip(he->ms.map, ip);
	symbol__inc_addr_samples(sym, he->ms.map, counter, ip);

	pthread_mutex_unlock(&notes->lock);
}

static void show_details(struct sym_entry *syme)
static void show_details(struct hist_entry *he)
{
	struct annotation *notes;
	struct symbol *symbol;
	int more;

	if (!syme)
	if (!he)
		return;

	symbol = sym_entry__symbol(syme);
	symbol = he->ms.sym;
	notes = symbol__annotation(symbol);

	pthread_mutex_lock(&notes->lock);
@@ -232,7 +237,7 @@ static void show_details(struct sym_entry *syme)
	printf("Showing %s for %s\n", event_name(top.sym_evsel), symbol->name);
	printf("  Events  Pcnt (>=%d%%)\n", sym_pcnt_filter);

	more = symbol__annotate_printf(symbol, syme->map, top.sym_evsel->idx,
	more = symbol__annotate_printf(symbol, he->ms.map, top.sym_evsel->idx,
				       0, sym_pcnt_filter, top.print_entries, 4);
	if (top.zero)
		symbol__annotate_zero_histogram(symbol, top.sym_evsel->idx);
@@ -246,21 +251,28 @@ static void show_details(struct sym_entry *syme)

static const char		CONSOLE_CLEAR[] = "";

static void __list_insert_active_sym(struct sym_entry *syme)
static struct hist_entry *
	perf_session__add_hist_entry(struct perf_session *session,
				     struct addr_location *al,
				     struct perf_sample *sample,
				     struct perf_evsel *evsel)
{
	list_add(&syme->node, &top.active_symbols);
	struct hist_entry *he;

	he = __hists__add_entry(&evsel->hists, al, NULL, sample->period);
	if (he == NULL)
		return NULL;

	session->hists.stats.total_period += sample->period;
	hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
	return he;
}

static void print_sym_table(void)
{
	char bf[160];
	int printed = 0;
	struct rb_node *nd;
	struct sym_entry *syme;
	struct rb_root tmp = RB_ROOT;
	const int win_width = winsize.ws_col - 1;
	int sym_width, dso_width, dso_short_width;
	float sum_ksamples = perf_top__decay_samples(&top, &tmp);

	puts(CONSOLE_CLEAR);

@@ -276,6 +288,7 @@ static void print_sym_table(void)
		color_fprintf(stdout, PERF_COLOR_RED, "WARNING:");
		printf(" LOST %" PRIu64 " events, Check IO/CPU overload\n",
		       top.total_lost_warned);
		++printed;
	}

	if (top.sym_filter_entry) {
@@ -283,58 +296,13 @@ static void print_sym_table(void)
		return;
	}

	perf_top__find_widths(&top, &tmp, &dso_width, &dso_short_width,
			      &sym_width);

	if (sym_width + dso_width > winsize.ws_col - 29) {
		dso_width = dso_short_width;
		if (sym_width + dso_width > winsize.ws_col - 29)
			sym_width = winsize.ws_col - dso_width - 29;
	}
	hists__collapse_resort_threaded(&top.sym_evsel->hists);
	hists__output_resort_threaded(&top.sym_evsel->hists);
	hists__decay_entries(&top.sym_evsel->hists);
	hists__output_recalc_col_len(&top.sym_evsel->hists, winsize.ws_row - 3);
	putchar('\n');
	if (top.evlist->nr_entries == 1)
		printf("             samples  pcnt");
	else
		printf("   weight    samples  pcnt");

	if (verbose)
		printf("         RIP       ");
	printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
	printf("   %s    _______ _____",
	       top.evlist->nr_entries == 1 ? "      " : "______");
	if (verbose)
		printf(" ________________");
	printf(" %-*.*s", sym_width, sym_width, graph_line);
	printf(" %-*.*s", dso_width, dso_width, graph_line);
	puts("\n");

	for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
		struct symbol *sym;
		double pcnt;

		syme = rb_entry(nd, struct sym_entry, rb_node);
		sym = sym_entry__symbol(syme);
		if (++printed > top.print_entries ||
		    (int)syme->snap_count < top.count_filter)
			continue;

		pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
					 sum_ksamples));

		if (top.evlist->nr_entries == 1 || !top.display_weighted)
			printf("%20.2f ", syme->weight);
		else
			printf("%9.1f %10ld ", syme->weight, syme->snap_count);

		percent_color_fprintf(stdout, "%4.1f%%", pcnt);
		if (verbose)
			printf(" %016" PRIx64, sym->start);
		printf(" %-*.*s", sym_width, sym_width, sym->name);
		printf(" %-*.*s\n", dso_width, dso_width,
		       dso_width >= syme->map->dso->long_name_len ?
					syme->map->dso->long_name :
					syme->map->dso->short_name);
	}
	hists__fprintf(&top.sym_evsel->hists, NULL, false, false,
		       winsize.ws_row - 4 - printed, win_width, stdout);
}

static void prompt_integer(int *target, const char *msg)
@@ -372,10 +340,11 @@ static void prompt_percent(int *target, const char *msg)
		*target = tmp;
}

static void prompt_symbol(struct sym_entry **target, const char *msg)
static void prompt_symbol(struct hist_entry **target, const char *msg)
{
	char *buf = malloc(0), *p;
	struct sym_entry *syme = *target, *n, *found = NULL;
	struct hist_entry *syme = *target, *n, *found = NULL;
	struct rb_node *next;
	size_t dummy = 0;

	/* zero counters of active symbol */
@@ -392,17 +361,14 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
	if (p)
		*p = 0;

	pthread_mutex_lock(&top.active_symbols_lock);
	syme = list_entry(top.active_symbols.next, struct sym_entry, node);
	pthread_mutex_unlock(&top.active_symbols_lock);

	list_for_each_entry_safe_from(syme, n, &top.active_symbols, node) {
		struct symbol *sym = sym_entry__symbol(syme);

		if (!strcmp(buf, sym->name)) {
			found = syme;
	next = rb_first(&top.sym_evsel->hists.entries);
	while (next) {
		n = rb_entry(next, struct hist_entry, rb_node);
		if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) {
			found = n;
			break;
		}
		next = rb_next(&n->rb_node);
	}

	if (!found) {
@@ -421,7 +387,7 @@ static void print_mapped_keys(void)
	char *name = NULL;

	if (top.sym_filter_entry) {
		struct symbol *sym = sym_entry__symbol(top.sym_filter_entry);
		struct symbol *sym = top.sym_filter_entry->ms.sym;
		name = sym->name;
	}

@@ -438,9 +404,6 @@ static void print_mapped_keys(void)
	fprintf(stdout, "\t[s]     annotate symbol.                   \t(%s)\n", name?: "NULL");
	fprintf(stdout, "\t[S]     stop annotation.\n");

	if (top.evlist->nr_entries > 1)
		fprintf(stdout, "\t[w]     toggle display weighted/count[E]r. \t(%d)\n", top.display_weighted ? 1 : 0);

	fprintf(stdout,
		"\t[K]     hide kernel_symbols symbols.     \t(%s)\n",
		top.hide_kernel_symbols ? "yes" : "no");
@@ -467,8 +430,6 @@ static int key_mapped(int c)
		case 'S':
			return 1;
		case 'E':
		case 'w':
			return top.evlist->nr_entries > 1 ? 1 : 0;
		default:
			break;
	}
@@ -561,7 +522,7 @@ static void handle_keypress(int c)
			if (!top.sym_filter_entry)
				break;
			else {
				struct sym_entry *syme = top.sym_filter_entry;
				struct hist_entry *syme = top.sym_filter_entry;

				top.sym_filter_entry = NULL;
				__zero_source_counters(syme);
@@ -570,9 +531,6 @@ static void handle_keypress(int c)
		case 'U':
			top.hide_user_symbols = !top.hide_user_symbols;
			break;
		case 'w':
			top.display_weighted = ~top.display_weighted;
			break;
		case 'z':
			top.zero = !top.zero;
			break;
@@ -581,19 +539,29 @@ static void handle_keypress(int c)
	}
}

static void *display_thread_tui(void *arg __used)
static void perf_top__sort_new_samples(void *arg)
{
	int err = 0;
	pthread_mutex_lock(&top.active_symbols_lock);
	while (list_empty(&top.active_symbols)) {
		err = pthread_cond_wait(&top.active_symbols_cond,
					&top.active_symbols_lock);
		if (err)
			break;
	struct perf_top *t = arg;
	perf_top__reset_sample_counters(t);

	if (t->evlist->selected != NULL)
		t->sym_evsel = t->evlist->selected;

	hists__collapse_resort_threaded(&t->sym_evsel->hists);
	hists__output_resort_threaded(&t->sym_evsel->hists);
	hists__decay_entries(&t->sym_evsel->hists);
	hists__output_recalc_col_len(&t->sym_evsel->hists, winsize.ws_row - 3);
}
	pthread_mutex_unlock(&top.active_symbols_lock);
	if (!err)
		perf_top__tui_browser(&top);

static void *display_thread_tui(void *arg __used)
{
	const char *help = "For a higher level overview, try: perf top --sort comm,dso";

	perf_top__sort_new_samples(&top);
	perf_evlist__tui_browse_hists(top.evlist, help,
				      perf_top__sort_new_samples,
				      &top, top.delay_secs);

	exit_browser(0);
	exit(0);
	return NULL;
@@ -645,9 +613,8 @@ static const char *skip_symbols[] = {
	NULL
};

static int symbol_filter(struct map *map, struct symbol *sym)
static int symbol_filter(struct map *map __used, struct symbol *sym)
{
	struct sym_entry *syme;
	const char *name = sym->name;
	int i;

@@ -667,16 +634,6 @@ static int symbol_filter(struct map *map, struct symbol *sym)
	    strstr(name, "_text_end"))
		return 1;

	syme = symbol__priv(sym);
	syme->map = map;
	symbol__annotate_init(map, sym);

	if (!top.sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) {
		/* schedule initial sym_filter_entry setup */
		sym_filter_entry_sched = syme;
		sym_filter = NULL;
	}

	for (i = 0; skip_symbols[i]; i++) {
		if (!strcmp(skip_symbols[i], name)) {
			sym->ignore = true;
@@ -692,7 +649,6 @@ static void perf_event__process_sample(const union perf_event *event,
				       struct perf_session *session)
{
	u64 ip = event->ip.ip;
	struct sym_entry *syme;
	struct addr_location al;
	struct machine *machine;
	u8 origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
@@ -783,46 +739,25 @@ static void perf_event__process_sample(const union perf_event *event,
				sleep(5);
			vmlinux_warned = true;
		}

		return;
	}

	/* let's see, whether we need to install initial sym_filter_entry */
	if (sym_filter_entry_sched) {
		top.sym_filter_entry = sym_filter_entry_sched;
		sym_filter_entry_sched = NULL;
		if (parse_source(top.sym_filter_entry) < 0) {
			struct symbol *sym = sym_entry__symbol(top.sym_filter_entry);

			pr_err("Can't annotate %s", sym->name);
			if (top.sym_filter_entry->map->dso->symtab_type == SYMTAB__KALLSYMS) {
				pr_err(": No vmlinux file was found in the path:\n");
				machine__fprintf_vmlinux_path(machine, stderr);
			} else
				pr_err(".\n");
			exit(1);
		}
	}

	syme = symbol__priv(al.sym);
	if (!al.sym->ignore) {
	if (al.sym == NULL || !al.sym->ignore) {
		struct perf_evsel *evsel;
		struct hist_entry *he;

		evsel = perf_evlist__id2evsel(top.evlist, sample->id);
		assert(evsel != NULL);
		syme->count[evsel->idx]++;
		record_precise_ip(syme, al.map, evsel->idx, ip);
		pthread_mutex_lock(&top.active_symbols_lock);
		if (list_empty(&syme->node) || !syme->node.next) {
			static bool first = true;
			__list_insert_active_sym(syme);
			if (first) {
				pthread_cond_broadcast(&top.active_symbols_cond);
				first = false;
			}

		he = perf_session__add_hist_entry(session, &al, sample, evsel);
		if (he == NULL) {
			pr_err("Problem incrementing symbol period, skipping event\n");
			return;
		}
		pthread_mutex_unlock(&top.active_symbols_lock);

		record_precise_ip(he, evsel->idx, ip);
	}

	return;
}

static void perf_session__mmap_read_idx(struct perf_session *self, int idx)
@@ -874,6 +809,7 @@ static void start_counters(struct perf_evlist *evlist)
		}

		attr->mmap = 1;
		attr->comm = 1;
		attr->inherit = inherit;
try_again:
		if (perf_evsel__open(counter, top.evlist->cpus,
@@ -1019,7 +955,7 @@ static const struct option options[] = {
			    "put the counters into a counter group"),
	OPT_BOOLEAN('i', "inherit", &inherit,
		    "child tasks inherit counters"),
	OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
	OPT_STRING(0, "sym-annotate", &sym_filter, "symbol name",
		    "symbol to annotate"),
	OPT_BOOLEAN('z', "zero", &top.zero,
		    "zero history across updates"),
@@ -1033,6 +969,18 @@ static const struct option options[] = {
	OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"),
	OPT_INCR('v', "verbose", &verbose,
		    "be more verbose (show counter open errors, etc)"),
	OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
		   "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_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...]",
		   "only consider symbols in these dsos"),
	OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
		   "only consider symbols in these comms"),
	OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
		   "only consider these symbols"),
	OPT_END()
};

@@ -1045,12 +993,17 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
	if (top.evlist == NULL)
		return -ENOMEM;

	page_size = sysconf(_SC_PAGE_SIZE);
	symbol_conf.exclude_other = false;

	argc = parse_options(argc, argv, options, top_usage, 0);
	if (argc)
		usage_with_options(top_usage, options);

	if (sort_order == default_sort_order)
		sort_order = "dso,symbol";

	setup_sorting(top_usage, options);

	/*
 	 * XXX For now start disabled, only using TUI if explicitely asked for.
 	 * Change that when handle_keys equivalent gets written, live annotation
@@ -1119,13 +1072,16 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)

	top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);

	symbol_conf.priv_size = (sizeof(struct sym_entry) + sizeof(struct annotation) +
				 (top.evlist->nr_entries + 1) * sizeof(unsigned long));
	symbol_conf.priv_size = sizeof(struct annotation);

	symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
	if (symbol__init() < 0)
		return -1;

	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);

	get_term_dimensions(&winsize);
	if (top.print_entries == 0) {
		update_print_entries(&winsize);
+50 −0
Original line number Diff line number Diff line
@@ -92,6 +92,41 @@ static void hist_entry__add_cpumode_period(struct hist_entry *self,
	}
}

static void hist_entry__decay(struct hist_entry *he)
{
	he->period = (he->period * 7) / 8;
	he->nr_events = (he->nr_events * 7) / 8;
}

static bool hists__decay_entry(struct hists *hists, struct hist_entry *he)
{
	hists->stats.total_period -= he->period;
	hist_entry__decay(he);
	hists->stats.total_period += he->period;
	return he->period == 0;
}

void hists__decay_entries(struct hists *hists)
{
	struct rb_node *next = rb_first(&hists->entries);
	struct hist_entry *n;

	while (next) {
		n = rb_entry(next, struct hist_entry, rb_node);
		next = rb_next(&n->rb_node);

		if (hists__decay_entry(hists, n)) {
			rb_erase(&n->rb_node, &hists->entries);

			if (sort__need_collapse)
				rb_erase(&n->rb_node_in, &hists->entries_collapsed);

			hist_entry__free(n);
			--hists->nr_entries;
		}
	}
}

/*
 * histogram, sorted on item, collects periods
 */
@@ -635,6 +670,21 @@ static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
	return ret;
}

void hists__output_recalc_col_len(struct hists *hists, int max_rows)
{
	struct rb_node *next = rb_first(&hists->entries);
	struct hist_entry *n;
	int row = 0;

	hists__reset_col_len(hists);

	while (next && row++ < max_rows) {
		n = rb_entry(next, struct hist_entry, rb_node);
		hists__calc_col_len(hists, n);
		next = rb_next(&n->rb_node);
	}
}

int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
			 struct hists *hists, struct hists *pair_hists,
			 bool show_displacement, long displacement,
+3 −0
Original line number Diff line number Diff line
@@ -78,6 +78,9 @@ void hists__output_resort_threaded(struct hists *hists);
void hists__collapse_resort(struct hists *self);
void hists__collapse_resort_threaded(struct hists *hists);

void hists__decay_entries(struct hists *hists);
void hists__output_recalc_col_len(struct hists *hists, int max_rows);

void hists__inc_nr_events(struct hists *self, u32 type);
size_t hists__fprintf_nr_events(struct hists *self, FILE *fp);

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