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-rw-r--r--tools/perf/ui/browsers/hists.c1345
1 files changed, 1345 insertions, 0 deletions
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
new file mode 100644
index 00000000000..466827e91b8
--- /dev/null
+++ b/tools/perf/ui/browsers/hists.c
@@ -0,0 +1,1345 @@
+#include <stdio.h>
+#include "../libslang.h"
+#include <stdlib.h>
+#include <string.h>
+#include <newt.h>
+#include <linux/rbtree.h>
+
+#include "../../util/evsel.h"
+#include "../../util/evlist.h"
+#include "../../util/hist.h"
+#include "../../util/pstack.h"
+#include "../../util/sort.h"
+#include "../../util/util.h"
+
+#include "../browser.h"
+#include "../helpline.h"
+#include "../util.h"
+#include "../ui.h"
+#include "map.h"
+
+struct hist_browser {
+ struct ui_browser b;
+ struct hists *hists;
+ struct hist_entry *he_selection;
+ struct map_symbol *selection;
+ bool has_symbols;
+};
+
+static int hists__browser_title(struct hists *self, char *bf, size_t size,
+ const char *ev_name);
+
+static void hist_browser__refresh_dimensions(struct hist_browser *self)
+{
+ /* 3 == +/- toggle symbol before actual hist_entry rendering */
+ self->b.width = 3 + (hists__sort_list_width(self->hists) +
+ sizeof("[k]"));
+}
+
+static void hist_browser__reset(struct hist_browser *self)
+{
+ self->b.nr_entries = self->hists->nr_entries;
+ hist_browser__refresh_dimensions(self);
+ ui_browser__reset_index(&self->b);
+}
+
+static char tree__folded_sign(bool unfolded)
+{
+ return unfolded ? '-' : '+';
+}
+
+static char map_symbol__folded(const struct map_symbol *self)
+{
+ return self->has_children ? tree__folded_sign(self->unfolded) : ' ';
+}
+
+static char hist_entry__folded(const struct hist_entry *self)
+{
+ return map_symbol__folded(&self->ms);
+}
+
+static char callchain_list__folded(const struct callchain_list *self)
+{
+ return map_symbol__folded(&self->ms);
+}
+
+static void map_symbol__set_folding(struct map_symbol *self, bool unfold)
+{
+ self->unfolded = unfold ? self->has_children : false;
+}
+
+static int callchain_node__count_rows_rb_tree(struct callchain_node *self)
+{
+ int n = 0;
+ struct rb_node *nd;
+
+ for (nd = rb_first(&self->rb_root); nd; nd = rb_next(nd)) {
+ struct callchain_node *child = rb_entry(nd, struct callchain_node, rb_node);
+ struct callchain_list *chain;
+ char folded_sign = ' '; /* No children */
+
+ list_for_each_entry(chain, &child->val, list) {
+ ++n;
+ /* We need this because we may not have children */
+ folded_sign = callchain_list__folded(chain);
+ if (folded_sign == '+')
+ break;
+ }
+
+ if (folded_sign == '-') /* Have children and they're unfolded */
+ n += callchain_node__count_rows_rb_tree(child);
+ }
+
+ return n;
+}
+
+static int callchain_node__count_rows(struct callchain_node *node)
+{
+ struct callchain_list *chain;
+ bool unfolded = false;
+ int n = 0;
+
+ list_for_each_entry(chain, &node->val, list) {
+ ++n;
+ unfolded = chain->ms.unfolded;
+ }
+
+ if (unfolded)
+ n += callchain_node__count_rows_rb_tree(node);
+
+ return n;
+}
+
+static int callchain__count_rows(struct rb_root *chain)
+{
+ struct rb_node *nd;
+ int n = 0;
+
+ for (nd = rb_first(chain); nd; nd = rb_next(nd)) {
+ struct callchain_node *node = rb_entry(nd, struct callchain_node, rb_node);
+ n += callchain_node__count_rows(node);
+ }
+
+ return n;
+}
+
+static bool map_symbol__toggle_fold(struct map_symbol *self)
+{
+ if (!self)
+ return false;
+
+ if (!self->has_children)
+ return false;
+
+ self->unfolded = !self->unfolded;
+ return true;
+}
+
+static void callchain_node__init_have_children_rb_tree(struct callchain_node *self)
+{
+ struct rb_node *nd = rb_first(&self->rb_root);
+
+ for (nd = rb_first(&self->rb_root); nd; nd = rb_next(nd)) {
+ struct callchain_node *child = rb_entry(nd, struct callchain_node, rb_node);
+ struct callchain_list *chain;
+ bool first = true;
+
+ list_for_each_entry(chain, &child->val, list) {
+ if (first) {
+ first = false;
+ chain->ms.has_children = chain->list.next != &child->val ||
+ !RB_EMPTY_ROOT(&child->rb_root);
+ } else
+ chain->ms.has_children = chain->list.next == &child->val &&
+ !RB_EMPTY_ROOT(&child->rb_root);
+ }
+
+ callchain_node__init_have_children_rb_tree(child);
+ }
+}
+
+static void callchain_node__init_have_children(struct callchain_node *self)
+{
+ struct callchain_list *chain;
+
+ list_for_each_entry(chain, &self->val, list)
+ chain->ms.has_children = !RB_EMPTY_ROOT(&self->rb_root);
+
+ callchain_node__init_have_children_rb_tree(self);
+}
+
+static void callchain__init_have_children(struct rb_root *self)
+{
+ struct rb_node *nd;
+
+ for (nd = rb_first(self); nd; nd = rb_next(nd)) {
+ struct callchain_node *node = rb_entry(nd, struct callchain_node, rb_node);
+ callchain_node__init_have_children(node);
+ }
+}
+
+static void hist_entry__init_have_children(struct hist_entry *self)
+{
+ if (!self->init_have_children) {
+ self->ms.has_children = !RB_EMPTY_ROOT(&self->sorted_chain);
+ callchain__init_have_children(&self->sorted_chain);
+ self->init_have_children = true;
+ }
+}
+
+static bool hist_browser__toggle_fold(struct hist_browser *self)
+{
+ if (map_symbol__toggle_fold(self->selection)) {
+ struct hist_entry *he = self->he_selection;
+
+ hist_entry__init_have_children(he);
+ self->hists->nr_entries -= he->nr_rows;
+
+ if (he->ms.unfolded)
+ he->nr_rows = callchain__count_rows(&he->sorted_chain);
+ else
+ he->nr_rows = 0;
+ self->hists->nr_entries += he->nr_rows;
+ self->b.nr_entries = self->hists->nr_entries;
+
+ return true;
+ }
+
+ /* If it doesn't have children, no toggling performed */
+ return false;
+}
+
+static int callchain_node__set_folding_rb_tree(struct callchain_node *self, bool unfold)
+{
+ int n = 0;
+ struct rb_node *nd;
+
+ for (nd = rb_first(&self->rb_root); nd; nd = rb_next(nd)) {
+ struct callchain_node *child = rb_entry(nd, struct callchain_node, rb_node);
+ struct callchain_list *chain;
+ bool has_children = false;
+
+ list_for_each_entry(chain, &child->val, list) {
+ ++n;
+ map_symbol__set_folding(&chain->ms, unfold);
+ has_children = chain->ms.has_children;
+ }
+
+ if (has_children)
+ n += callchain_node__set_folding_rb_tree(child, unfold);
+ }
+
+ return n;
+}
+
+static int callchain_node__set_folding(struct callchain_node *node, bool unfold)
+{
+ struct callchain_list *chain;
+ bool has_children = false;
+ int n = 0;
+
+ list_for_each_entry(chain, &node->val, list) {
+ ++n;
+ map_symbol__set_folding(&chain->ms, unfold);
+ has_children = chain->ms.has_children;
+ }
+
+ if (has_children)
+ n += callchain_node__set_folding_rb_tree(node, unfold);
+
+ return n;
+}
+
+static int callchain__set_folding(struct rb_root *chain, bool unfold)
+{
+ struct rb_node *nd;
+ int n = 0;
+
+ for (nd = rb_first(chain); nd; nd = rb_next(nd)) {
+ struct callchain_node *node = rb_entry(nd, struct callchain_node, rb_node);
+ n += callchain_node__set_folding(node, unfold);
+ }
+
+ return n;
+}
+
+static void hist_entry__set_folding(struct hist_entry *self, bool unfold)
+{
+ hist_entry__init_have_children(self);
+ map_symbol__set_folding(&self->ms, unfold);
+
+ if (self->ms.has_children) {
+ int n = callchain__set_folding(&self->sorted_chain, unfold);
+ self->nr_rows = unfold ? n : 0;
+ } else
+ self->nr_rows = 0;
+}
+
+static void hists__set_folding(struct hists *self, bool unfold)
+{
+ struct rb_node *nd;
+
+ self->nr_entries = 0;
+
+ for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
+ struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
+ hist_entry__set_folding(he, unfold);
+ self->nr_entries += 1 + he->nr_rows;
+ }
+}
+
+static void hist_browser__set_folding(struct hist_browser *self, bool unfold)
+{
+ hists__set_folding(self->hists, unfold);
+ self->b.nr_entries = self->hists->nr_entries;
+ /* Go to the start, we may be way after valid entries after a collapse */
+ ui_browser__reset_index(&self->b);
+}
+
+static void ui_browser__warn_lost_events(struct ui_browser *browser)
+{
+ ui_browser__warning(browser, 4,
+ "Events are being lost, check IO/CPU overload!\n\n"
+ "You may want to run 'perf' using a RT scheduler policy:\n\n"
+ " perf top -r 80\n\n"
+ "Or reduce the sampling frequency.");
+}
+
+static int hist_browser__run(struct hist_browser *self, const char *ev_name,
+ void(*timer)(void *arg), void *arg, int delay_secs)
+{
+ int key;
+ char title[160];
+
+ self->b.entries = &self->hists->entries;
+ self->b.nr_entries = self->hists->nr_entries;
+
+ hist_browser__refresh_dimensions(self);
+ hists__browser_title(self->hists, title, sizeof(title), ev_name);
+
+ if (ui_browser__show(&self->b, title,
+ "Press '?' for help on key bindings") < 0)
+ return -1;
+
+ while (1) {
+ key = ui_browser__run(&self->b, delay_secs);
+
+ switch (key) {
+ case K_TIMER:
+ timer(arg);
+ ui_browser__update_nr_entries(&self->b, self->hists->nr_entries);
+
+ if (self->hists->stats.nr_lost_warned !=
+ self->hists->stats.nr_events[PERF_RECORD_LOST]) {
+ self->hists->stats.nr_lost_warned =
+ self->hists->stats.nr_events[PERF_RECORD_LOST];
+ ui_browser__warn_lost_events(&self->b);
+ }
+
+ hists__browser_title(self->hists, title, sizeof(title), ev_name);
+ ui_browser__show_title(&self->b, title);
+ continue;
+ case 'D': { /* Debug */
+ static int seq;
+ struct hist_entry *h = rb_entry(self->b.top,
+ struct hist_entry, rb_node);
+ ui_helpline__pop();
+ ui_helpline__fpush("%d: nr_ent=(%d,%d), height=%d, idx=%d, fve: idx=%d, row_off=%d, nrows=%d",
+ seq++, self->b.nr_entries,
+ self->hists->nr_entries,
+ self->b.height,
+ self->b.index,
+ self->b.top_idx,
+ h->row_offset, h->nr_rows);
+ }
+ break;
+ case 'C':
+ /* Collapse the whole world. */
+ hist_browser__set_folding(self, false);
+ break;
+ case 'E':
+ /* Expand the whole world. */
+ hist_browser__set_folding(self, true);
+ break;
+ case K_ENTER:
+ if (hist_browser__toggle_fold(self))
+ break;
+ /* fall thru */
+ default:
+ goto out;
+ }
+ }
+out:
+ ui_browser__hide(&self->b);
+ return key;
+}
+
+static char *callchain_list__sym_name(struct callchain_list *self,
+ char *bf, size_t bfsize)
+{
+ if (self->ms.sym)
+ return self->ms.sym->name;
+
+ snprintf(bf, bfsize, "%#" PRIx64, self->ip);
+ return bf;
+}
+
+#define LEVEL_OFFSET_STEP 3
+
+static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *self,
+ struct callchain_node *chain_node,
+ u64 total, int level,
+ unsigned short row,
+ off_t *row_offset,
+ bool *is_current_entry)
+{
+ struct rb_node *node;
+ int first_row = row, width, offset = level * LEVEL_OFFSET_STEP;
+ u64 new_total, remaining;
+
+ if (callchain_param.mode == CHAIN_GRAPH_REL)
+ new_total = chain_node->children_hit;
+ else
+ new_total = total;
+
+ remaining = new_total;
+ node = rb_first(&chain_node->rb_root);
+ while (node) {
+ struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node);
+ struct rb_node *next = rb_next(node);
+ u64 cumul = callchain_cumul_hits(child);
+ struct callchain_list *chain;
+ char folded_sign = ' ';
+ int first = true;
+ int extra_offset = 0;
+
+ remaining -= cumul;
+
+ list_for_each_entry(chain, &child->val, list) {
+ char ipstr[BITS_PER_LONG / 4 + 1], *alloc_str;
+ const char *str;
+ int color;
+ bool was_first = first;
+
+ if (first)
+ first = false;
+ else
+ extra_offset = LEVEL_OFFSET_STEP;
+
+ folded_sign = callchain_list__folded(chain);
+ if (*row_offset != 0) {
+ --*row_offset;
+ goto do_next;
+ }
+
+ alloc_str = NULL;
+ str = callchain_list__sym_name(chain, ipstr, sizeof(ipstr));
+ if (was_first) {
+ double percent = cumul * 100.0 / new_total;
+
+ if (asprintf(&alloc_str, "%2.2f%% %s", percent, str) < 0)
+ str = "Not enough memory!";
+ else
+ str = alloc_str;
+ }
+
+ color = HE_COLORSET_NORMAL;
+ width = self->b.width - (offset + extra_offset + 2);
+ if (ui_browser__is_current_entry(&self->b, row)) {
+ self->selection = &chain->ms;
+ color = HE_COLORSET_SELECTED;
+ *is_current_entry = true;
+ }
+
+ ui_browser__set_color(&self->b, color);
+ ui_browser__gotorc(&self->b, row, 0);
+ slsmg_write_nstring(" ", offset + extra_offset);
+ slsmg_printf("%c ", folded_sign);
+ slsmg_write_nstring(str, width);
+ free(alloc_str);
+
+ if (++row == self->b.height)
+ goto out;
+do_next:
+ if (folded_sign == '+')
+ break;
+ }
+
+ if (folded_sign == '-') {
+ const int new_level = level + (extra_offset ? 2 : 1);
+ row += hist_browser__show_callchain_node_rb_tree(self, child, new_total,
+ new_level, row, row_offset,
+ is_current_entry);
+ }
+ if (row == self->b.height)
+ goto out;
+ node = next;
+ }
+out:
+ return row - first_row;
+}
+
+static int hist_browser__show_callchain_node(struct hist_browser *self,
+ struct callchain_node *node,
+ int level, unsigned short row,
+ off_t *row_offset,
+ bool *is_current_entry)
+{
+ struct callchain_list *chain;
+ int first_row = row,
+ offset = level * LEVEL_OFFSET_STEP,
+ width = self->b.width - offset;
+ char folded_sign = ' ';
+
+ list_for_each_entry(chain, &node->val, list) {
+ char ipstr[BITS_PER_LONG / 4 + 1], *s;
+ int color;
+
+ folded_sign = callchain_list__folded(chain);
+
+ if (*row_offset != 0) {
+ --*row_offset;
+ continue;
+ }
+
+ color = HE_COLORSET_NORMAL;
+ if (ui_browser__is_current_entry(&self->b, row)) {
+ self->selection = &chain->ms;
+ color = HE_COLORSET_SELECTED;
+ *is_current_entry = true;
+ }
+
+ s = callchain_list__sym_name(chain, ipstr, sizeof(ipstr));
+ ui_browser__gotorc(&self->b, row, 0);
+ ui_browser__set_color(&self->b, color);
+ slsmg_write_nstring(" ", offset);
+ slsmg_printf("%c ", folded_sign);
+ slsmg_write_nstring(s, width - 2);
+
+ if (++row == self->b.height)
+ goto out;
+ }
+
+ if (folded_sign == '-')
+ row += hist_browser__show_callchain_node_rb_tree(self, node,
+ self->hists->stats.total_period,
+ level + 1, row,
+ row_offset,
+ is_current_entry);
+out:
+ return row - first_row;
+}
+
+static int hist_browser__show_callchain(struct hist_browser *self,
+ struct rb_root *chain,
+ int level, unsigned short row,
+ off_t *row_offset,
+ bool *is_current_entry)
+{
+ struct rb_node *nd;
+ int first_row = row;
+
+ for (nd = rb_first(chain); nd; nd = rb_next(nd)) {
+ struct callchain_node *node = rb_entry(nd, struct callchain_node, rb_node);
+
+ row += hist_browser__show_callchain_node(self, node, level,
+ row, row_offset,
+ is_current_entry);
+ if (row == self->b.height)
+ break;
+ }
+
+ return row - first_row;
+}
+
+static int hist_browser__show_entry(struct hist_browser *self,
+ struct hist_entry *entry,
+ unsigned short row)
+{
+ char s[256];
+ double percent;
+ int printed = 0;
+ int width = self->b.width - 6; /* The percentage */
+ char folded_sign = ' ';
+ bool current_entry = ui_browser__is_current_entry(&self->b, row);
+ off_t row_offset = entry->row_offset;
+
+ if (current_entry) {
+ self->he_selection = entry;
+ self->selection = &entry->ms;
+ }
+
+ if (symbol_conf.use_callchain) {
+ hist_entry__init_have_children(entry);
+ folded_sign = hist_entry__folded(entry);
+ }
+
+ if (row_offset == 0) {
+ hist_entry__snprintf(entry, s, sizeof(s), self->hists);
+ percent = (entry->period * 100.0) / self->hists->stats.total_period;
+
+ ui_browser__set_percent_color(&self->b, percent, current_entry);
+ ui_browser__gotorc(&self->b, row, 0);
+ if (symbol_conf.use_callchain) {
+ slsmg_printf("%c ", folded_sign);
+ width -= 2;
+ }
+
+ slsmg_printf(" %5.2f%%", percent);
+
+ /* The scroll bar isn't being used */
+ if (!self->b.navkeypressed)
+ width += 1;
+
+ if (!current_entry || !self->b.navkeypressed)
+ ui_browser__set_color(&self->b, HE_COLORSET_NORMAL);
+
+ if (symbol_conf.show_nr_samples) {
+ slsmg_printf(" %11u", entry->nr_events);
+ width -= 12;
+ }
+
+ if (symbol_conf.show_total_period) {
+ slsmg_printf(" %12" PRIu64, entry->period);
+ width -= 13;
+ }
+
+ slsmg_write_nstring(s, width);
+ ++row;
+ ++printed;
+ } else
+ --row_offset;
+
+ if (folded_sign == '-' && row != self->b.height) {
+ printed += hist_browser__show_callchain(self, &entry->sorted_chain,
+ 1, row, &row_offset,
+ &current_entry);
+ if (current_entry)
+ self->he_selection = entry;
+ }
+
+ return printed;
+}
+
+static void ui_browser__hists_init_top(struct ui_browser *browser)
+{
+ if (browser->top == NULL) {
+ struct hist_browser *hb;
+
+ hb = container_of(browser, struct hist_browser, b);
+ browser->top = rb_first(&hb->hists->entries);
+ }
+}
+
+static unsigned int hist_browser__refresh(struct ui_browser *self)
+{
+ unsigned row = 0;
+ struct rb_node *nd;
+ struct hist_browser *hb = container_of(self, struct hist_browser, b);
+
+ ui_browser__hists_init_top(self);
+
+ for (nd = self->top; nd; nd = rb_next(nd)) {
+ struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
+
+ if (h->filtered)
+ continue;
+
+ row += hist_browser__show_entry(hb, h, row);
+ if (row == self->height)
+ break;
+ }
+
+ return row;
+}
+
+static struct rb_node *hists__filter_entries(struct rb_node *nd)
+{
+ while (nd != NULL) {
+ struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
+ if (!h->filtered)
+ return nd;
+
+ nd = rb_next(nd);
+ }
+
+ return NULL;
+}
+
+static struct rb_node *hists__filter_prev_entries(struct rb_node *nd)
+{
+ while (nd != NULL) {
+ struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
+ if (!h->filtered)
+ return nd;
+
+ nd = rb_prev(nd);
+ }
+
+ return NULL;
+}
+
+static void ui_browser__hists_seek(struct ui_browser *self,
+ off_t offset, int whence)
+{
+ struct hist_entry *h;
+ struct rb_node *nd;
+ bool first = true;
+
+ if (self->nr_entries == 0)
+ return;
+
+ ui_browser__hists_init_top(self);
+
+ switch (whence) {
+ case SEEK_SET:
+ nd = hists__filter_entries(rb_first(self->entries));
+ break;
+ case SEEK_CUR:
+ nd = self->top;
+ goto do_offset;
+ case SEEK_END:
+ nd = hists__filter_prev_entries(rb_last(self->entries));
+ first = false;
+ break;
+ default:
+ return;
+ }
+
+ /*
+ * Moves not relative to the first visible entry invalidates its
+ * row_offset:
+ */
+ h = rb_entry(self->top, struct hist_entry, rb_node);
+ h->row_offset = 0;
+
+ /*
+ * Here we have to check if nd is expanded (+), if it is we can't go
+ * the next top level hist_entry, instead we must compute an offset of
+ * what _not_ to show and not change the first visible entry.
+ *
+ * This offset increments when we are going from top to bottom and
+ * decreases when we're going from bottom to top.
+ *
+ * As we don't have backpointers to the top level in the callchains
+ * structure, we need to always print the whole hist_entry callchain,
+ * skipping the first ones that are before the first visible entry
+ * and stop when we printed enough lines to fill the screen.
+ */
+do_offset:
+ if (offset > 0) {
+ do {
+ h = rb_entry(nd, struct hist_entry, rb_node);
+ if (h->ms.unfolded) {
+ u16 remaining = h->nr_rows - h->row_offset;
+ if (offset > remaining) {
+ offset -= remaining;
+ h->row_offset = 0;
+ } else {
+ h->row_offset += offset;
+ offset = 0;
+ self->top = nd;
+ break;
+ }
+ }
+ nd = hists__filter_entries(rb_next(nd));
+ if (nd == NULL)
+ break;
+ --offset;
+ self->top = nd;
+ } while (offset != 0);
+ } else if (offset < 0) {
+ while (1) {
+ h = rb_entry(nd, struct hist_entry, rb_node);
+ if (h->ms.unfolded) {
+ if (first) {
+ if (-offset > h->row_offset) {
+ offset += h->row_offset;
+ h->row_offset = 0;
+ } else {
+ h->row_offset += offset;
+ offset = 0;
+ self->top = nd;
+ break;
+ }
+ } else {
+ if (-offset > h->nr_rows) {
+ offset += h->nr_rows;
+ h->row_offset = 0;
+ } else {
+ h->row_offset = h->nr_rows + offset;
+ offset = 0;
+ self->top = nd;
+ break;
+ }
+ }
+ }
+
+ nd = hists__filter_prev_entries(rb_prev(nd));
+ if (nd == NULL)
+ break;
+ ++offset;
+ self->top = nd;
+ if (offset == 0) {
+ /*
+ * Last unfiltered hist_entry, check if it is
+ * unfolded, if it is then we should have
+ * row_offset at its last entry.
+ */
+ h = rb_entry(nd, struct hist_entry, rb_node);
+ if (h->ms.unfolded)
+ h->row_offset = h->nr_rows;
+ break;
+ }
+ first = false;
+ }
+ } else {
+ self->top = nd;
+ h = rb_entry(nd, struct hist_entry, rb_node);
+ h->row_offset = 0;
+ }
+}
+
+static struct hist_browser *hist_browser__new(struct hists *hists)
+{
+ struct hist_browser *self = zalloc(sizeof(*self));
+
+ if (self) {
+ self->hists = hists;
+ self->b.refresh = hist_browser__refresh;
+ self->b.seek = ui_browser__hists_seek;
+ self->b.use_navkeypressed = true;
+ if (sort__branch_mode == 1)
+ self->has_symbols = sort_sym_from.list.next != NULL;
+ else
+ self->has_symbols = sort_sym.list.next != NULL;
+ }
+
+ return self;
+}
+
+static void hist_browser__delete(struct hist_browser *self)
+{
+ free(self);
+}
+
+static struct hist_entry *hist_browser__selected_entry(struct hist_browser *self)
+{
+ return self->he_selection;
+}
+
+static struct thread *hist_browser__selected_thread(struct hist_browser *self)
+{
+ return self->he_selection->thread;
+}
+
+static int hists__browser_title(struct hists *self, char *bf, size_t size,
+ const char *ev_name)
+{
+ char unit;
+ int printed;
+ const struct dso *dso = self->dso_filter;
+ const struct thread *thread = self->thread_filter;
+ unsigned long nr_samples = self->stats.nr_events[PERF_RECORD_SAMPLE];
+ u64 nr_events = self->stats.total_period;
+
+ nr_samples = convert_unit(nr_samples, &unit);
+ printed = scnprintf(bf, size,
+ "Samples: %lu%c of event '%s', Event count (approx.): %lu",
+ nr_samples, unit, ev_name, nr_events);
+
+
+ if (self->uid_filter_str)
+ printed += snprintf(bf + printed, size - printed,
+ ", UID: %s", self->uid_filter_str);
+ if (thread)
+ printed += scnprintf(bf + printed, size - printed,
+ ", Thread: %s(%d)",
+ (thread->comm_set ? thread->comm : ""),
+ thread->pid);
+ if (dso)
+ printed += scnprintf(bf + printed, size - printed,
+ ", DSO: %s", dso->short_name);
+ return printed;
+}
+
+static inline void free_popup_options(char **options, int n)
+{
+ int i;
+
+ for (i = 0; i < n; ++i) {
+ free(options[i]);
+ options[i] = NULL;
+ }
+}
+
+static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
+ const char *helpline, const char *ev_name,
+ bool left_exits,
+ void(*timer)(void *arg), void *arg,
+ int delay_secs)
+{
+ struct hists *self = &evsel->hists;
+ struct hist_browser *browser = hist_browser__new(self);
+ struct branch_info *bi;
+ struct pstack *fstack;
+ char *options[16];
+ int nr_options = 0;
+ int key = -1;
+ char buf[64];
+
+ if (browser == NULL)
+ return -1;
+
+ fstack = pstack__new(2);
+ if (fstack == NULL)
+ goto out;
+
+ ui_helpline__push(helpline);
+
+ memset(options, 0, sizeof(options));
+
+ while (1) {
+ const struct thread *thread = NULL;
+ const struct dso *dso = NULL;
+ int choice = 0,
+ annotate = -2, zoom_dso = -2, zoom_thread = -2,
+ annotate_f = -2, annotate_t = -2, browse_map = -2;
+
+ nr_options = 0;
+
+ key = hist_browser__run(browser, ev_name, timer, arg, delay_secs);
+
+ if (browser->he_selection != NULL) {
+ thread = hist_browser__selected_thread(browser);
+ dso = browser->selection->map ? browser->selection->map->dso : NULL;
+ }
+ switch (key) {
+ case K_TAB:
+ case K_UNTAB:
+ if (nr_events == 1)
+ continue;
+ /*
+ * Exit the browser, let hists__browser_tree
+ * go to the next or previous
+ */
+ goto out_free_stack;
+ case 'a':
+ if (!browser->has_symbols) {
+ ui_browser__warning(&browser->b, delay_secs * 2,
+ "Annotation is only available for symbolic views, "
+ "include \"sym*\" in --sort to use it.");
+ continue;
+ }
+
+ if (browser->selection == NULL ||
+ browser->selection->sym == NULL ||
+ browser->selection->map->dso->annotate_warned)
+ continue;
+ goto do_annotate;
+ case 'd':
+ goto zoom_dso;
+ case 't':
+ goto zoom_thread;
+ case 's':
+ if (ui_browser__input_window("Symbol to show",
+ "Please enter the name of symbol you want to see",
+ buf, "ENTER: OK, ESC: Cancel",
+ delay_secs * 2) == K_ENTER) {
+ self->symbol_filter_str = *buf ? buf : NULL;
+ hists__filter_by_symbol(self);
+ hist_browser__reset(browser);
+ }
+ continue;
+ case K_F1:
+ case 'h':
+ case '?':
+ ui_browser__help_window(&browser->b,
+ "h/?/F1 Show this window\n"
+ "UP/DOWN/PGUP\n"
+ "PGDN/SPACE Navigate\n"
+ "q/ESC/CTRL+C Exit browser\n\n"
+ "For multiple event sessions:\n\n"
+ "TAB/UNTAB Switch events\n\n"
+ "For symbolic views (--sort has sym):\n\n"
+ "-> Zoom into DSO/Threads & Annotate current symbol\n"
+ "<- Zoom out\n"
+ "a Annotate current symbol\n"
+ "C Collapse all callchains\n"
+ "E Expand all callchains\n"
+ "d Zoom into current DSO\n"
+ "t Zoom into current Thread\n"
+ "s Filter symbol by name");
+ continue;
+ case K_ENTER:
+ case K_RIGHT:
+ /* menu */
+ break;
+ case K_LEFT: {
+ const void *top;
+
+ if (pstack__empty(fstack)) {
+ /*
+ * Go back to the perf_evsel_menu__run or other user
+ */
+ if (left_exits)
+ goto out_free_stack;
+ continue;
+ }
+ top = pstack__pop(fstack);
+ if (top == &browser->hists->dso_filter)
+ goto zoom_out_dso;
+ if (top == &browser->hists->thread_filter)
+ goto zoom_out_thread;
+ continue;
+ }
+ case K_ESC:
+ if (!left_exits &&
+ !ui_browser__dialog_yesno(&browser->b,
+ "Do you really want to exit?"))
+ continue;
+ /* Fall thru */
+ case 'q':
+ case CTRL('c'):
+ goto out_free_stack;
+ default:
+ continue;
+ }
+
+ if (!browser->has_symbols)
+ goto add_exit_option;
+
+ if (sort__branch_mode == 1) {
+ bi = browser->he_selection->branch_info;
+ if (browser->selection != NULL &&
+ bi &&
+ bi->from.sym != NULL &&
+ !bi->from.map->dso->annotate_warned &&
+ asprintf(&options[nr_options], "Annotate %s",
+ bi->from.sym->name) > 0)
+ annotate_f = nr_options++;
+
+ if (browser->selection != NULL &&
+ bi &&
+ bi->to.sym != NULL &&
+ !bi->to.map->dso->annotate_warned &&
+ (bi->to.sym != bi->from.sym ||
+ bi->to.map->dso != bi->from.map->dso) &&
+ asprintf(&options[nr_options], "Annotate %s",
+ bi->to.sym->name) > 0)
+ annotate_t = nr_options++;
+ } else {
+
+ if (browser->selection != NULL &&
+ browser->selection->sym != NULL &&
+ !browser->selection->map->dso->annotate_warned &&
+ asprintf(&options[nr_options], "Annotate %s",
+ browser->selection->sym->name) > 0)
+ annotate = nr_options++;
+ }
+
+ if (thread != NULL &&
+ asprintf(&options[nr_options], "Zoom %s %s(%d) thread",
+ (browser->hists->thread_filter ? "out of" : "into"),
+ (thread->comm_set ? thread->comm : ""),
+ thread->pid) > 0)
+ zoom_thread = nr_options++;
+
+ if (dso != NULL &&
+ asprintf(&options[nr_options], "Zoom %s %s DSO",
+ (browser->hists->dso_filter ? "out of" : "into"),
+ (dso->kernel ? "the Kernel" : dso->short_name)) > 0)
+ zoom_dso = nr_options++;
+
+ if (browser->selection != NULL &&
+ browser->selection->map != NULL &&
+ asprintf(&options[nr_options], "Browse map details") > 0)
+ browse_map = nr_options++;
+add_exit_option:
+ options[nr_options++] = (char *)"Exit";
+retry_popup_menu:
+ choice = ui__popup_menu(nr_options, options);
+
+ if (choice == nr_options - 1)
+ break;
+
+ if (choice == -1) {
+ free_popup_options(options, nr_options - 1);
+ continue;
+ }
+
+ if (choice == annotate || choice == annotate_t || choice == annotate_f) {
+ struct hist_entry *he;
+ int err;
+do_annotate:
+ he = hist_browser__selected_entry(browser);
+ if (he == NULL)
+ continue;
+
+ /*
+ * we stash the branch_info symbol + map into the
+ * the ms so we don't have to rewrite all the annotation
+ * code to use branch_info.
+ * in branch mode, the ms struct is not used
+ */
+ if (choice == annotate_f) {
+ he->ms.sym = he->branch_info->from.sym;
+ he->ms.map = he->branch_info->from.map;
+ } else if (choice == annotate_t) {
+ he->ms.sym = he->branch_info->to.sym;
+ he->ms.map = he->branch_info->to.map;
+ }
+
+ /*
+ * Don't let this be freed, say, by hists__decay_entry.
+ */
+ he->used = true;
+ err = hist_entry__tui_annotate(he, evsel->idx,
+ timer, arg, delay_secs);
+ he->used = false;
+ /*
+ * offer option to annotate the other branch source or target
+ * (if they exists) when returning from annotate
+ */
+ if ((err == 'q' || err == CTRL('c'))
+ && annotate_t != -2 && annotate_f != -2)
+ goto retry_popup_menu;
+
+ ui_browser__update_nr_entries(&browser->b, browser->hists->nr_entries);
+ if (err)
+ ui_browser__handle_resize(&browser->b);
+
+ } else if (choice == browse_map)
+ map__browse(browser->selection->map);
+ else if (choice == zoom_dso) {
+zoom_dso:
+ if (browser->hists->dso_filter) {
+ pstack__remove(fstack, &browser->hists->dso_filter);
+zoom_out_dso:
+ ui_helpline__pop();
+ browser->hists->dso_filter = NULL;
+ sort_dso.elide = false;
+ } else {
+ if (dso == NULL)
+ continue;
+ ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s DSO\"",
+ dso->kernel ? "the Kernel" : dso->short_name);
+ browser->hists->dso_filter = dso;
+ sort_dso.elide = true;
+ pstack__push(fstack, &browser->hists->dso_filter);
+ }
+ hists__filter_by_dso(self);
+ hist_browser__reset(browser);
+ } else if (choice == zoom_thread) {
+zoom_thread:
+ if (browser->hists->thread_filter) {
+ pstack__remove(fstack, &browser->hists->thread_filter);
+zoom_out_thread:
+ ui_helpline__pop();
+ browser->hists->thread_filter = NULL;
+ sort_thread.elide = false;
+ } else {
+ ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s(%d) thread\"",
+ thread->comm_set ? thread->comm : "",
+ thread->pid);
+ browser->hists->thread_filter = thread;
+ sort_thread.elide = true;
+ pstack__push(fstack, &browser->hists->thread_filter);
+ }
+ hists__filter_by_thread(self);
+ hist_browser__reset(browser);
+ }
+ }
+out_free_stack:
+ pstack__delete(fstack);
+out:
+ hist_browser__delete(browser);
+ free_popup_options(options, nr_options - 1);
+ return key;
+}
+
+struct perf_evsel_menu {
+ struct ui_browser b;
+ struct perf_evsel *selection;
+ bool lost_events, lost_events_warned;
+};
+
+static void perf_evsel_menu__write(struct ui_browser *browser,
+ void *entry, int row)
+{
+ struct perf_evsel_menu *menu = container_of(browser,
+ struct perf_evsel_menu, b);
+ struct perf_evsel *evsel = list_entry(entry, struct perf_evsel, node);
+ bool current_entry = ui_browser__is_current_entry(browser, row);
+ unsigned long nr_events = evsel->hists.stats.nr_events[PERF_RECORD_SAMPLE];
+ const char *ev_name = event_name(evsel);
+ char bf[256], unit;
+ const char *warn = " ";
+ size_t printed;
+
+ ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
+ HE_COLORSET_NORMAL);
+
+ nr_events = convert_unit(nr_events, &unit);
+ printed = scnprintf(bf, sizeof(bf), "%lu%c%s%s", nr_events,
+ unit, unit == ' ' ? "" : " ", ev_name);
+ slsmg_printf("%s", bf);
+
+ nr_events = evsel->hists.stats.nr_events[PERF_RECORD_LOST];
+ if (nr_events != 0) {
+ menu->lost_events = true;
+ if (!current_entry)
+ ui_browser__set_color(browser, HE_COLORSET_TOP);
+ nr_events = convert_unit(nr_events, &unit);
+ printed += scnprintf(bf, sizeof(bf), ": %ld%c%schunks LOST!",
+ nr_events, unit, unit == ' ' ? "" : " ");
+ warn = bf;
+ }
+
+ slsmg_write_nstring(warn, browser->width - printed);
+
+ if (current_entry)
+ menu->selection = evsel;
+}
+
+static int perf_evsel_menu__run(struct perf_evsel_menu *menu,
+ int nr_events, const char *help,
+ void(*timer)(void *arg), void *arg, int delay_secs)
+{
+ struct perf_evlist *evlist = menu->b.priv;
+ struct perf_evsel *pos;
+ const char *ev_name, *title = "Available samples";
+ int key;
+
+ if (ui_browser__show(&menu->b, title,
+ "ESC: exit, ENTER|->: Browse histograms") < 0)
+ return -1;
+
+ while (1) {
+ key = ui_browser__run(&menu->b, delay_secs);
+
+ switch (key) {
+ case K_TIMER:
+ timer(arg);
+
+ if (!menu->lost_events_warned && menu->lost_events) {
+ ui_browser__warn_lost_events(&menu->b);
+ menu->lost_events_warned = true;
+ }
+ continue;
+ case K_RIGHT:
+ case K_ENTER:
+ if (!menu->selection)
+ continue;
+ pos = menu->selection;
+browse_hists:
+ perf_evlist__set_selected(evlist, pos);
+ /*
+ * Give the calling tool a chance to populate the non
+ * default evsel resorted hists tree.
+ */
+ if (timer)
+ timer(arg);
+ ev_name = event_name(pos);
+ key = perf_evsel__hists_browse(pos, nr_events, help,
+ ev_name, true, timer,
+ arg, delay_secs);
+ ui_browser__show_title(&menu->b, title);
+ switch (key) {
+ case K_TAB:
+ if (pos->node.next == &evlist->entries)
+ pos = list_entry(evlist->entries.next, struct perf_evsel, node);
+ else
+ pos = list_entry(pos->node.next, struct perf_evsel, node);
+ goto browse_hists;
+ case K_UNTAB:
+ if (pos->node.prev == &evlist->entries)
+ pos = list_entry(evlist->entries.prev, struct perf_evsel, node);
+ else
+ pos = list_entry(pos->node.prev, struct perf_evsel, node);
+ goto browse_hists;
+ case K_ESC:
+ if (!ui_browser__dialog_yesno(&menu->b,
+ "Do you really want to exit?"))
+ continue;
+ /* Fall thru */
+ case 'q':
+ case CTRL('c'):
+ goto out;
+ default:
+ continue;
+ }
+ case K_LEFT:
+ continue;
+ case K_ESC:
+ if (!ui_browser__dialog_yesno(&menu->b,
+ "Do you really want to exit?"))
+ continue;
+ /* Fall thru */
+ case 'q':
+ case CTRL('c'):
+ goto out;
+ default:
+ continue;
+ }
+ }
+
+out:
+ ui_browser__hide(&menu->b);
+ return key;
+}
+
+static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
+ const char *help,
+ void(*timer)(void *arg), void *arg,
+ int delay_secs)
+{
+ struct perf_evsel *pos;
+ struct perf_evsel_menu menu = {
+ .b = {
+ .entries = &evlist->entries,
+ .refresh = ui_browser__list_head_refresh,
+ .seek = ui_browser__list_head_seek,
+ .write = perf_evsel_menu__write,
+ .nr_entries = evlist->nr_entries,
+ .priv = evlist,
+ },
+ };
+
+ ui_helpline__push("Press ESC to exit");
+
+ list_for_each_entry(pos, &evlist->entries, node) {
+ const char *ev_name = event_name(pos);
+ size_t line_len = strlen(ev_name) + 7;
+
+ if (menu.b.width < line_len)
+ menu.b.width = line_len;
+ /*
+ * Cache the evsel name, tracepoints have a _high_ cost per
+ * event_name() call.
+ */
+ if (pos->name == NULL)
+ pos->name = strdup(ev_name);
+ }
+
+ return perf_evsel_menu__run(&menu, evlist->nr_entries, help, timer,
+ arg, delay_secs);
+}
+
+int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
+ void(*timer)(void *arg), void *arg,
+ int delay_secs)
+{
+
+ if (evlist->nr_entries == 1) {
+ struct perf_evsel *first = list_entry(evlist->entries.next,
+ struct perf_evsel, node);
+ const char *ev_name = event_name(first);
+ return perf_evsel__hists_browse(first, evlist->nr_entries, help,
+ ev_name, false, timer, arg,
+ delay_secs);
+ }
+
+ return __perf_evlist__tui_browse_hists(evlist, help,
+ timer, arg, delay_secs);
+}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 03:07:04 +0000