perf_counter: Use rb_trees in perf report
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo
Ingo Molnar
Родитель
62eb93905b
Коммит
35a50c8a20
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@ -287,6 +287,8 @@ LIB_FILE=libperf.a
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LIB_H += ../../include/linux/perf_counter.h
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LIB_H += perf.h
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LIB_H += util/list.h
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LIB_H += util/rbtree.h
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LIB_H += util/levenshtein.h
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LIB_H += util/parse-options.h
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LIB_H += util/parse-events.h
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@ -306,6 +308,7 @@ LIB_OBJS += util/levenshtein.o
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LIB_OBJS += util/parse-options.o
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LIB_OBJS += util/parse-events.o
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LIB_OBJS += util/path.o
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LIB_OBJS += util/rbtree.o
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LIB_OBJS += util/run-command.o
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LIB_OBJS += util/quote.o
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LIB_OBJS += util/strbuf.o
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@ -32,7 +32,8 @@
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#include <linux/types.h>
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#include "../../include/linux/perf_counter.h"
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#include "list.h"
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#include "util/list.h"
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#include "util/rbtree.h"
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#define SHOW_KERNEL 1
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#define SHOW_USER 2
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@ -106,10 +107,10 @@ static void section__delete(struct section *self)
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}
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struct symbol {
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struct list_head node;
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uint64_t start;
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uint64_t end;
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char name[0];
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struct rb_node rb_node;
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uint64_t start;
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uint64_t end;
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char name[0];
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};
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static struct symbol *symbol__new(uint64_t start, uint64_t len, const char *name)
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@ -139,7 +140,7 @@ static size_t symbol__fprintf(struct symbol *self, FILE *fp)
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struct dso {
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struct list_head node;
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struct list_head sections;
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struct list_head syms;
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struct rb_root syms;
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char name[0];
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};
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@ -150,7 +151,7 @@ static struct dso *dso__new(const char *name)
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if (self != NULL) {
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strcpy(self->name, name);
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INIT_LIST_HEAD(&self->sections);
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INIT_LIST_HEAD(&self->syms);
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self->syms = RB_ROOT;
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}
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return self;
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@ -166,10 +167,14 @@ static void dso__delete_sections(struct dso *self)
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static void dso__delete_symbols(struct dso *self)
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{
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struct symbol *pos, *n;
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struct symbol *pos;
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struct rb_node *next = rb_first(&self->syms);
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list_for_each_entry_safe(pos, n, &self->syms, node)
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while (next) {
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pos = rb_entry(next, struct symbol, rb_node);
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next = rb_next(&pos->rb_node);
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symbol__delete(pos);
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}
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}
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static void dso__delete(struct dso *self)
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@ -181,7 +186,21 @@ static void dso__delete(struct dso *self)
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static void dso__insert_symbol(struct dso *self, struct symbol *sym)
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{
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list_add_tail(&sym->node, &self->syms);
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struct rb_node **p = &self->syms.rb_node;
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struct rb_node *parent = NULL;
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const uint64_t ip = sym->start;
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struct symbol *s;
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while (*p != NULL) {
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parent = *p;
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s = rb_entry(parent, struct symbol, rb_node);
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if (ip < s->start)
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p = &(*p)->rb_left;
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else
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p = &(*p)->rb_right;
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}
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rb_link_node(&sym->rb_node, parent, p);
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rb_insert_color(&sym->rb_node, &self->syms);
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}
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static struct symbol *dso__find_symbol(struct dso *self, uint64_t ip)
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@ -189,11 +208,18 @@ static struct symbol *dso__find_symbol(struct dso *self, uint64_t ip)
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if (self == NULL)
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return NULL;
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struct symbol *pos;
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struct rb_node *n = self->syms.rb_node;
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list_for_each_entry(pos, &self->syms, node)
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if (ip >= pos->start && ip <= pos->end)
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return pos;
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while (n) {
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struct symbol *s = rb_entry(n, struct symbol, rb_node);
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if (ip < s->start)
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n = n->rb_left;
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else if (ip > s->end)
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n = n->rb_right;
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else
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return s;
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}
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return NULL;
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}
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@ -319,11 +345,13 @@ out_close:
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static size_t dso__fprintf(struct dso *self, FILE *fp)
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{
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struct symbol *pos;
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size_t ret = fprintf(fp, "dso: %s\n", self->name);
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list_for_each_entry(pos, &self->syms, node)
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struct rb_node *nd;
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for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
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struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
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ret += symbol__fprintf(pos, fp);
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}
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return ret;
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}
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@ -0,0 +1,383 @@
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/*
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Red Black Trees
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(C) 1999 Andrea Arcangeli <andrea@suse.de>
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(C) 2002 David Woodhouse <dwmw2@infradead.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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linux/lib/rbtree.c
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*/
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#include "rbtree.h"
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static void __rb_rotate_left(struct rb_node *node, struct rb_root *root)
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{
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struct rb_node *right = node->rb_right;
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struct rb_node *parent = rb_parent(node);
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if ((node->rb_right = right->rb_left))
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rb_set_parent(right->rb_left, node);
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right->rb_left = node;
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rb_set_parent(right, parent);
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if (parent)
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{
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if (node == parent->rb_left)
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parent->rb_left = right;
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else
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parent->rb_right = right;
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}
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else
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root->rb_node = right;
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rb_set_parent(node, right);
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}
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static void __rb_rotate_right(struct rb_node *node, struct rb_root *root)
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{
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struct rb_node *left = node->rb_left;
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struct rb_node *parent = rb_parent(node);
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if ((node->rb_left = left->rb_right))
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rb_set_parent(left->rb_right, node);
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left->rb_right = node;
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rb_set_parent(left, parent);
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if (parent)
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{
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if (node == parent->rb_right)
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parent->rb_right = left;
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else
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parent->rb_left = left;
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}
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else
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root->rb_node = left;
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rb_set_parent(node, left);
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}
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void rb_insert_color(struct rb_node *node, struct rb_root *root)
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{
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struct rb_node *parent, *gparent;
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while ((parent = rb_parent(node)) && rb_is_red(parent))
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{
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gparent = rb_parent(parent);
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if (parent == gparent->rb_left)
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{
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{
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register struct rb_node *uncle = gparent->rb_right;
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if (uncle && rb_is_red(uncle))
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{
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rb_set_black(uncle);
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rb_set_black(parent);
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rb_set_red(gparent);
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node = gparent;
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continue;
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}
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}
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if (parent->rb_right == node)
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{
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register struct rb_node *tmp;
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__rb_rotate_left(parent, root);
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tmp = parent;
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parent = node;
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node = tmp;
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}
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rb_set_black(parent);
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rb_set_red(gparent);
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__rb_rotate_right(gparent, root);
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} else {
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{
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register struct rb_node *uncle = gparent->rb_left;
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if (uncle && rb_is_red(uncle))
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{
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rb_set_black(uncle);
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rb_set_black(parent);
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rb_set_red(gparent);
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node = gparent;
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continue;
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}
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}
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if (parent->rb_left == node)
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{
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register struct rb_node *tmp;
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__rb_rotate_right(parent, root);
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tmp = parent;
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parent = node;
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node = tmp;
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}
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rb_set_black(parent);
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rb_set_red(gparent);
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__rb_rotate_left(gparent, root);
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}
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}
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rb_set_black(root->rb_node);
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}
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static void __rb_erase_color(struct rb_node *node, struct rb_node *parent,
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struct rb_root *root)
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{
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struct rb_node *other;
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while ((!node || rb_is_black(node)) && node != root->rb_node)
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{
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if (parent->rb_left == node)
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{
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other = parent->rb_right;
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if (rb_is_red(other))
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{
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rb_set_black(other);
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rb_set_red(parent);
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__rb_rotate_left(parent, root);
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other = parent->rb_right;
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}
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if ((!other->rb_left || rb_is_black(other->rb_left)) &&
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(!other->rb_right || rb_is_black(other->rb_right)))
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{
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rb_set_red(other);
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node = parent;
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parent = rb_parent(node);
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}
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else
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{
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if (!other->rb_right || rb_is_black(other->rb_right))
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{
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rb_set_black(other->rb_left);
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rb_set_red(other);
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__rb_rotate_right(other, root);
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other = parent->rb_right;
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}
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rb_set_color(other, rb_color(parent));
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rb_set_black(parent);
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rb_set_black(other->rb_right);
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__rb_rotate_left(parent, root);
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node = root->rb_node;
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break;
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}
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}
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else
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{
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other = parent->rb_left;
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if (rb_is_red(other))
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{
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rb_set_black(other);
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rb_set_red(parent);
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__rb_rotate_right(parent, root);
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other = parent->rb_left;
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}
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if ((!other->rb_left || rb_is_black(other->rb_left)) &&
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(!other->rb_right || rb_is_black(other->rb_right)))
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{
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rb_set_red(other);
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node = parent;
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parent = rb_parent(node);
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}
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else
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{
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if (!other->rb_left || rb_is_black(other->rb_left))
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{
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rb_set_black(other->rb_right);
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rb_set_red(other);
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__rb_rotate_left(other, root);
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other = parent->rb_left;
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}
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rb_set_color(other, rb_color(parent));
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rb_set_black(parent);
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rb_set_black(other->rb_left);
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__rb_rotate_right(parent, root);
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node = root->rb_node;
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break;
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}
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}
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}
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if (node)
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rb_set_black(node);
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}
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void rb_erase(struct rb_node *node, struct rb_root *root)
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{
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struct rb_node *child, *parent;
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int color;
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if (!node->rb_left)
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child = node->rb_right;
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else if (!node->rb_right)
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child = node->rb_left;
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else
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{
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struct rb_node *old = node, *left;
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node = node->rb_right;
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while ((left = node->rb_left) != NULL)
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node = left;
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child = node->rb_right;
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parent = rb_parent(node);
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color = rb_color(node);
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if (child)
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rb_set_parent(child, parent);
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if (parent == old) {
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parent->rb_right = child;
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parent = node;
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} else
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parent->rb_left = child;
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node->rb_parent_color = old->rb_parent_color;
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node->rb_right = old->rb_right;
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node->rb_left = old->rb_left;
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if (rb_parent(old))
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{
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if (rb_parent(old)->rb_left == old)
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rb_parent(old)->rb_left = node;
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else
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rb_parent(old)->rb_right = node;
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} else
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root->rb_node = node;
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rb_set_parent(old->rb_left, node);
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if (old->rb_right)
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rb_set_parent(old->rb_right, node);
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goto color;
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}
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parent = rb_parent(node);
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color = rb_color(node);
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if (child)
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rb_set_parent(child, parent);
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if (parent)
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{
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if (parent->rb_left == node)
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parent->rb_left = child;
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else
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parent->rb_right = child;
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}
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else
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root->rb_node = child;
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color:
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if (color == RB_BLACK)
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__rb_erase_color(child, parent, root);
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}
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/*
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* This function returns the first node (in sort order) of the tree.
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*/
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struct rb_node *rb_first(const struct rb_root *root)
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{
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struct rb_node *n;
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n = root->rb_node;
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if (!n)
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return NULL;
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while (n->rb_left)
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n = n->rb_left;
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return n;
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}
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struct rb_node *rb_last(const struct rb_root *root)
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{
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struct rb_node *n;
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n = root->rb_node;
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if (!n)
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return NULL;
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while (n->rb_right)
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n = n->rb_right;
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return n;
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}
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struct rb_node *rb_next(const struct rb_node *node)
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{
|
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struct rb_node *parent;
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if (rb_parent(node) == node)
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return NULL;
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|
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/* If we have a right-hand child, go down and then left as far
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as we can. */
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if (node->rb_right) {
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node = node->rb_right;
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while (node->rb_left)
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node=node->rb_left;
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return (struct rb_node *)node;
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}
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|
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/* No right-hand children. Everything down and left is
|
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smaller than us, so any 'next' node must be in the general
|
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direction of our parent. Go up the tree; any time the
|
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ancestor is a right-hand child of its parent, keep going
|
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up. First time it's a left-hand child of its parent, said
|
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parent is our 'next' node. */
|
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while ((parent = rb_parent(node)) && node == parent->rb_right)
|
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node = parent;
|
||||
|
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return parent;
|
||||
}
|
||||
|
||||
struct rb_node *rb_prev(const struct rb_node *node)
|
||||
{
|
||||
struct rb_node *parent;
|
||||
|
||||
if (rb_parent(node) == node)
|
||||
return NULL;
|
||||
|
||||
/* If we have a left-hand child, go down and then right as far
|
||||
as we can. */
|
||||
if (node->rb_left) {
|
||||
node = node->rb_left;
|
||||
while (node->rb_right)
|
||||
node=node->rb_right;
|
||||
return (struct rb_node *)node;
|
||||
}
|
||||
|
||||
/* No left-hand children. Go up till we find an ancestor which
|
||||
is a right-hand child of its parent */
|
||||
while ((parent = rb_parent(node)) && node == parent->rb_left)
|
||||
node = parent;
|
||||
|
||||
return parent;
|
||||
}
|
||||
|
||||
void rb_replace_node(struct rb_node *victim, struct rb_node *new,
|
||||
struct rb_root *root)
|
||||
{
|
||||
struct rb_node *parent = rb_parent(victim);
|
||||
|
||||
/* Set the surrounding nodes to point to the replacement */
|
||||
if (parent) {
|
||||
if (victim == parent->rb_left)
|
||||
parent->rb_left = new;
|
||||
else
|
||||
parent->rb_right = new;
|
||||
} else {
|
||||
root->rb_node = new;
|
||||
}
|
||||
if (victim->rb_left)
|
||||
rb_set_parent(victim->rb_left, new);
|
||||
if (victim->rb_right)
|
||||
rb_set_parent(victim->rb_right, new);
|
||||
|
||||
/* Copy the pointers/colour from the victim to the replacement */
|
||||
*new = *victim;
|
||||
}
|
||||
|
|
@ -0,0 +1,171 @@
|
|||
/*
|
||||
Red Black Trees
|
||||
(C) 1999 Andrea Arcangeli <andrea@suse.de>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
|
||||
linux/include/linux/rbtree.h
|
||||
|
||||
To use rbtrees you'll have to implement your own insert and search cores.
|
||||
This will avoid us to use callbacks and to drop drammatically performances.
|
||||
I know it's not the cleaner way, but in C (not in C++) to get
|
||||
performances and genericity...
|
||||
|
||||
Some example of insert and search follows here. The search is a plain
|
||||
normal search over an ordered tree. The insert instead must be implemented
|
||||
int two steps: as first thing the code must insert the element in
|
||||
order as a red leaf in the tree, then the support library function
|
||||
rb_insert_color() must be called. Such function will do the
|
||||
not trivial work to rebalance the rbtree if necessary.
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
static inline struct page * rb_search_page_cache(struct inode * inode,
|
||||
unsigned long offset)
|
||||
{
|
||||
struct rb_node * n = inode->i_rb_page_cache.rb_node;
|
||||
struct page * page;
|
||||
|
||||
while (n)
|
||||
{
|
||||
page = rb_entry(n, struct page, rb_page_cache);
|
||||
|
||||
if (offset < page->offset)
|
||||
n = n->rb_left;
|
||||
else if (offset > page->offset)
|
||||
n = n->rb_right;
|
||||
else
|
||||
return page;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static inline struct page * __rb_insert_page_cache(struct inode * inode,
|
||||
unsigned long offset,
|
||||
struct rb_node * node)
|
||||
{
|
||||
struct rb_node ** p = &inode->i_rb_page_cache.rb_node;
|
||||
struct rb_node * parent = NULL;
|
||||
struct page * page;
|
||||
|
||||
while (*p)
|
||||
{
|
||||
parent = *p;
|
||||
page = rb_entry(parent, struct page, rb_page_cache);
|
||||
|
||||
if (offset < page->offset)
|
||||
p = &(*p)->rb_left;
|
||||
else if (offset > page->offset)
|
||||
p = &(*p)->rb_right;
|
||||
else
|
||||
return page;
|
||||
}
|
||||
|
||||
rb_link_node(node, parent, p);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static inline struct page * rb_insert_page_cache(struct inode * inode,
|
||||
unsigned long offset,
|
||||
struct rb_node * node)
|
||||
{
|
||||
struct page * ret;
|
||||
if ((ret = __rb_insert_page_cache(inode, offset, node)))
|
||||
goto out;
|
||||
rb_insert_color(node, &inode->i_rb_page_cache);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
-----------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_RBTREE_H
|
||||
#define _LINUX_RBTREE_H
|
||||
|
||||
#include <stddef.h>
|
||||
|
||||
/**
|
||||
* container_of - cast a member of a structure out to the containing structure
|
||||
* @ptr: the pointer to the member.
|
||||
* @type: the type of the container struct this is embedded in.
|
||||
* @member: the name of the member within the struct.
|
||||
*
|
||||
*/
|
||||
#define container_of(ptr, type, member) ({ \
|
||||
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
|
||||
(type *)( (char *)__mptr - offsetof(type,member) );})
|
||||
|
||||
struct rb_node
|
||||
{
|
||||
unsigned long rb_parent_color;
|
||||
#define RB_RED 0
|
||||
#define RB_BLACK 1
|
||||
struct rb_node *rb_right;
|
||||
struct rb_node *rb_left;
|
||||
} __attribute__((aligned(sizeof(long))));
|
||||
/* The alignment might seem pointless, but allegedly CRIS needs it */
|
||||
|
||||
struct rb_root
|
||||
{
|
||||
struct rb_node *rb_node;
|
||||
};
|
||||
|
||||
|
||||
#define rb_parent(r) ((struct rb_node *)((r)->rb_parent_color & ~3))
|
||||
#define rb_color(r) ((r)->rb_parent_color & 1)
|
||||
#define rb_is_red(r) (!rb_color(r))
|
||||
#define rb_is_black(r) rb_color(r)
|
||||
#define rb_set_red(r) do { (r)->rb_parent_color &= ~1; } while (0)
|
||||
#define rb_set_black(r) do { (r)->rb_parent_color |= 1; } while (0)
|
||||
|
||||
static inline void rb_set_parent(struct rb_node *rb, struct rb_node *p)
|
||||
{
|
||||
rb->rb_parent_color = (rb->rb_parent_color & 3) | (unsigned long)p;
|
||||
}
|
||||
static inline void rb_set_color(struct rb_node *rb, int color)
|
||||
{
|
||||
rb->rb_parent_color = (rb->rb_parent_color & ~1) | color;
|
||||
}
|
||||
|
||||
#define RB_ROOT (struct rb_root) { NULL, }
|
||||
#define rb_entry(ptr, type, member) container_of(ptr, type, member)
|
||||
|
||||
#define RB_EMPTY_ROOT(root) ((root)->rb_node == NULL)
|
||||
#define RB_EMPTY_NODE(node) (rb_parent(node) == node)
|
||||
#define RB_CLEAR_NODE(node) (rb_set_parent(node, node))
|
||||
|
||||
extern void rb_insert_color(struct rb_node *, struct rb_root *);
|
||||
extern void rb_erase(struct rb_node *, struct rb_root *);
|
||||
|
||||
/* Find logical next and previous nodes in a tree */
|
||||
extern struct rb_node *rb_next(const struct rb_node *);
|
||||
extern struct rb_node *rb_prev(const struct rb_node *);
|
||||
extern struct rb_node *rb_first(const struct rb_root *);
|
||||
extern struct rb_node *rb_last(const struct rb_root *);
|
||||
|
||||
/* Fast replacement of a single node without remove/rebalance/add/rebalance */
|
||||
extern void rb_replace_node(struct rb_node *victim, struct rb_node *new,
|
||||
struct rb_root *root);
|
||||
|
||||
static inline void rb_link_node(struct rb_node * node, struct rb_node * parent,
|
||||
struct rb_node ** rb_link)
|
||||
{
|
||||
node->rb_parent_color = (unsigned long )parent;
|
||||
node->rb_left = node->rb_right = NULL;
|
||||
|
||||
*rb_link = node;
|
||||
}
|
||||
|
||||
#endif /* _LINUX_RBTREE_H */
|
||||
Загрузка…
Ссылка в новой задаче