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https://github.com/edk2-porting/linux-next.git
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83a0944fa9
Related to a shadowed variable bug fix Valdis Kletnieks noticed that perf does not get built with -Wshadow, which could have helped us avoid the bug. So enable -Wshadow and also enable the following warnings on perf builds, in addition to the already enabled -Wall -Wextra -std=gnu99 warnings: -Wcast-align -Wformat=2 -Wshadow -Winit-self -Wpacked -Wredundant-decls -Wstack-protector -Wstrict-aliasing=3 -Wswitch-default -Wswitch-enum -Wno-system-headers -Wundef -Wvolatile-register-var -Wwrite-strings -Wbad-function-cast -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wold-style-definition -Wstrict-prototypes -Wdeclaration-after-statement And change/fix the perf code to build cleanly under GCC 4.3.2. The list of warnings enablement is rather arbitrary: it's based on my (quick) reading of the GCC manpages and trying them on perf. I categorized the warnings based on individually enabling them and looking whether they trigger something in the perf build. If i liked those warnings (i.e. if they trigger for something that arguably could be improved) i enabled the warning. If the warnings seemed to come from language laywers spamming the build with tons of nuisance warnings i generally kept them off. Most of the sign conversion related warnings were in this category. (A second patch enabling some of the sign warnings might be welcome - sign bugs can be nasty.) I also kept warnings that seem to make sense from their manpage description and which produced no actual warnings on our code base. These warnings might still be turned off if they end up being a nuisance. I also left out a few warnings that are not supported in older compilers. [ Note that these changes might break the build on older compilers i did not test, or on non-x86 architectures that produce different warnings, so more testing would be welcome. ] Reported-by: Valdis.Kletnieks@vt.edu Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
1148 lines
23 KiB
C
1148 lines
23 KiB
C
/*
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* builtin-annotate.c
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*
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* Builtin annotate command: Analyze the perf.data input file,
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* look up and read DSOs and symbol information and display
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* a histogram of results, along various sorting keys.
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*/
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#include "builtin.h"
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#include "util/util.h"
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#include "util/color.h"
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#include <linux/list.h>
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#include "util/cache.h"
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#include <linux/rbtree.h>
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#include "util/symbol.h"
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#include "util/string.h"
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#include "perf.h"
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#include "util/parse-options.h"
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#include "util/parse-events.h"
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#include "util/thread.h"
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#define SHOW_KERNEL 1
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#define SHOW_USER 2
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#define SHOW_HV 4
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static char const *input_name = "perf.data";
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static char default_sort_order[] = "comm,symbol";
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static char *sort_order = default_sort_order;
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static int input;
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static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
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static int dump_trace = 0;
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#define dprintf(x...) do { if (dump_trace) printf(x); } while (0)
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static int full_paths;
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static int print_line;
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static unsigned long page_size;
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static unsigned long mmap_window = 32;
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static struct rb_root threads;
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static struct thread *last_match;
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struct sym_ext {
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struct rb_node node;
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double percent;
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char *path;
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};
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/*
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* histogram, sorted on item, collects counts
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*/
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static struct rb_root hist;
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struct hist_entry {
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struct rb_node rb_node;
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struct thread *thread;
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struct map *map;
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struct dso *dso;
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struct symbol *sym;
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u64 ip;
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char level;
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uint32_t count;
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};
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/*
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* configurable sorting bits
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*/
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struct sort_entry {
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struct list_head list;
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const char *header;
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int64_t (*cmp)(struct hist_entry *, struct hist_entry *);
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int64_t (*collapse)(struct hist_entry *, struct hist_entry *);
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size_t (*print)(FILE *fp, struct hist_entry *);
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};
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/* --sort pid */
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static int64_t
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sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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return right->thread->pid - left->thread->pid;
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}
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static size_t
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sort__thread_print(FILE *fp, struct hist_entry *self)
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{
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return fprintf(fp, "%16s:%5d", self->thread->comm ?: "", self->thread->pid);
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}
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static struct sort_entry sort_thread = {
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.header = " Command: Pid",
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.cmp = sort__thread_cmp,
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.print = sort__thread_print,
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};
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/* --sort comm */
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static int64_t
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sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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return right->thread->pid - left->thread->pid;
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}
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static int64_t
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sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
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{
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char *comm_l = left->thread->comm;
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char *comm_r = right->thread->comm;
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if (!comm_l || !comm_r) {
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if (!comm_l && !comm_r)
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return 0;
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else if (!comm_l)
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return -1;
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else
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return 1;
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}
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return strcmp(comm_l, comm_r);
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}
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static size_t
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sort__comm_print(FILE *fp, struct hist_entry *self)
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{
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return fprintf(fp, "%16s", self->thread->comm);
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}
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static struct sort_entry sort_comm = {
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.header = " Command",
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.cmp = sort__comm_cmp,
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.collapse = sort__comm_collapse,
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.print = sort__comm_print,
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};
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/* --sort dso */
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static int64_t
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sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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struct dso *dso_l = left->dso;
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struct dso *dso_r = right->dso;
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if (!dso_l || !dso_r) {
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if (!dso_l && !dso_r)
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return 0;
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else if (!dso_l)
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return -1;
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else
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return 1;
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}
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return strcmp(dso_l->name, dso_r->name);
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}
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static size_t
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sort__dso_print(FILE *fp, struct hist_entry *self)
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{
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if (self->dso)
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return fprintf(fp, "%-25s", self->dso->name);
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return fprintf(fp, "%016llx ", (u64)self->ip);
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}
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static struct sort_entry sort_dso = {
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.header = "Shared Object ",
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.cmp = sort__dso_cmp,
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.print = sort__dso_print,
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};
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/* --sort symbol */
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static int64_t
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sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
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{
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u64 ip_l, ip_r;
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if (left->sym == right->sym)
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return 0;
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ip_l = left->sym ? left->sym->start : left->ip;
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ip_r = right->sym ? right->sym->start : right->ip;
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return (int64_t)(ip_r - ip_l);
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}
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static size_t
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sort__sym_print(FILE *fp, struct hist_entry *self)
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{
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size_t ret = 0;
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if (verbose)
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ret += fprintf(fp, "%#018llx ", (u64)self->ip);
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if (self->sym) {
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ret += fprintf(fp, "[%c] %s",
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self->dso == kernel_dso ? 'k' : '.', self->sym->name);
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} else {
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ret += fprintf(fp, "%#016llx", (u64)self->ip);
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}
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return ret;
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}
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static struct sort_entry sort_sym = {
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.header = "Symbol",
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.cmp = sort__sym_cmp,
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.print = sort__sym_print,
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};
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static int sort__need_collapse = 0;
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struct sort_dimension {
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const char *name;
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struct sort_entry *entry;
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int taken;
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};
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static struct sort_dimension sort_dimensions[] = {
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{ .name = "pid", .entry = &sort_thread, },
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{ .name = "comm", .entry = &sort_comm, },
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{ .name = "dso", .entry = &sort_dso, },
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{ .name = "symbol", .entry = &sort_sym, },
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};
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static LIST_HEAD(hist_entry__sort_list);
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static int sort_dimension__add(char *tok)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
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struct sort_dimension *sd = &sort_dimensions[i];
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if (sd->taken)
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continue;
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if (strncasecmp(tok, sd->name, strlen(tok)))
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continue;
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if (sd->entry->collapse)
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sort__need_collapse = 1;
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list_add_tail(&sd->entry->list, &hist_entry__sort_list);
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sd->taken = 1;
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return 0;
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}
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return -ESRCH;
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}
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static int64_t
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hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
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{
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struct sort_entry *se;
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int64_t cmp = 0;
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list_for_each_entry(se, &hist_entry__sort_list, list) {
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cmp = se->cmp(left, right);
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if (cmp)
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break;
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}
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return cmp;
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}
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static int64_t
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hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
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{
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struct sort_entry *se;
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int64_t cmp = 0;
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list_for_each_entry(se, &hist_entry__sort_list, list) {
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int64_t (*f)(struct hist_entry *, struct hist_entry *);
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f = se->collapse ?: se->cmp;
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cmp = f(left, right);
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if (cmp)
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break;
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}
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return cmp;
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}
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/*
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* collect histogram counts
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*/
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static void hist_hit(struct hist_entry *he, u64 ip)
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{
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unsigned int sym_size, offset;
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struct symbol *sym = he->sym;
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he->count++;
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if (!sym || !sym->hist)
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return;
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sym_size = sym->end - sym->start;
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offset = ip - sym->start;
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if (offset >= sym_size)
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return;
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sym->hist_sum++;
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sym->hist[offset]++;
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if (verbose >= 3)
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printf("%p %s: count++ [ip: %p, %08Lx] => %Ld\n",
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(void *)(unsigned long)he->sym->start,
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he->sym->name,
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(void *)(unsigned long)ip, ip - he->sym->start,
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sym->hist[offset]);
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}
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static int
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hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
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struct symbol *sym, u64 ip, char level)
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{
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struct rb_node **p = &hist.rb_node;
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struct rb_node *parent = NULL;
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struct hist_entry *he;
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struct hist_entry entry = {
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.thread = thread,
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.map = map,
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.dso = dso,
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.sym = sym,
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.ip = ip,
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.level = level,
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.count = 1,
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};
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int cmp;
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while (*p != NULL) {
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parent = *p;
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he = rb_entry(parent, struct hist_entry, rb_node);
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cmp = hist_entry__cmp(&entry, he);
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if (!cmp) {
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hist_hit(he, ip);
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return 0;
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}
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if (cmp < 0)
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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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he = malloc(sizeof(*he));
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if (!he)
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return -ENOMEM;
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*he = entry;
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rb_link_node(&he->rb_node, parent, p);
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rb_insert_color(&he->rb_node, &hist);
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return 0;
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}
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static void hist_entry__free(struct hist_entry *he)
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{
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free(he);
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}
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/*
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* collapse the histogram
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*/
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static struct rb_root collapse_hists;
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static void collapse__insert_entry(struct hist_entry *he)
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{
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struct rb_node **p = &collapse_hists.rb_node;
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struct rb_node *parent = NULL;
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struct hist_entry *iter;
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int64_t cmp;
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while (*p != NULL) {
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parent = *p;
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iter = rb_entry(parent, struct hist_entry, rb_node);
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cmp = hist_entry__collapse(iter, he);
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if (!cmp) {
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iter->count += he->count;
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hist_entry__free(he);
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return;
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}
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if (cmp < 0)
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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(&he->rb_node, parent, p);
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rb_insert_color(&he->rb_node, &collapse_hists);
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}
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static void collapse__resort(void)
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{
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struct rb_node *next;
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struct hist_entry *n;
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if (!sort__need_collapse)
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return;
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next = rb_first(&hist);
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while (next) {
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n = rb_entry(next, struct hist_entry, rb_node);
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next = rb_next(&n->rb_node);
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rb_erase(&n->rb_node, &hist);
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collapse__insert_entry(n);
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}
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}
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/*
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* reverse the map, sort on count.
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*/
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static struct rb_root output_hists;
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static void output__insert_entry(struct hist_entry *he)
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{
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struct rb_node **p = &output_hists.rb_node;
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struct rb_node *parent = NULL;
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struct hist_entry *iter;
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while (*p != NULL) {
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parent = *p;
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iter = rb_entry(parent, struct hist_entry, rb_node);
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if (he->count > iter->count)
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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(&he->rb_node, parent, p);
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rb_insert_color(&he->rb_node, &output_hists);
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}
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static void output__resort(void)
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{
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struct rb_node *next;
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struct hist_entry *n;
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struct rb_root *tree = &hist;
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if (sort__need_collapse)
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tree = &collapse_hists;
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next = rb_first(tree);
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while (next) {
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n = rb_entry(next, struct hist_entry, rb_node);
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next = rb_next(&n->rb_node);
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rb_erase(&n->rb_node, tree);
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output__insert_entry(n);
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}
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}
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static void register_idle_thread(void)
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{
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struct thread *thread = threads__findnew(0, &threads, &last_match);
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if (thread == NULL ||
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thread__set_comm(thread, "[idle]")) {
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fprintf(stderr, "problem inserting idle task.\n");
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exit(-1);
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}
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}
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static unsigned long total = 0,
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total_mmap = 0,
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total_comm = 0,
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total_fork = 0,
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total_unknown = 0;
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static int
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process_sample_event(event_t *event, unsigned long offset, unsigned long head)
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{
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char level;
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int show = 0;
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struct dso *dso = NULL;
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struct thread *thread;
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u64 ip = event->ip.ip;
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struct map *map = NULL;
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thread = threads__findnew(event->ip.pid, &threads, &last_match);
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dprintf("%p [%p]: PERF_EVENT (IP, %d): %d: %p\n",
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(void *)(offset + head),
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(void *)(long)(event->header.size),
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event->header.misc,
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event->ip.pid,
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(void *)(long)ip);
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dprintf(" ... thread: %s:%d\n", thread->comm, thread->pid);
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if (thread == NULL) {
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fprintf(stderr, "problem processing %d event, skipping it.\n",
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event->header.type);
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return -1;
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}
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if (event->header.misc & PERF_EVENT_MISC_KERNEL) {
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show = SHOW_KERNEL;
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level = 'k';
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dso = kernel_dso;
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dprintf(" ...... dso: %s\n", dso->name);
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} else if (event->header.misc & PERF_EVENT_MISC_USER) {
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show = SHOW_USER;
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level = '.';
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map = thread__find_map(thread, ip);
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if (map != NULL) {
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ip = map->map_ip(map, ip);
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dso = map->dso;
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} else {
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/*
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* If this is outside of all known maps,
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* and is a negative address, try to look it
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* up in the kernel dso, as it might be a
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* vsyscall (which executes in user-mode):
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*/
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if ((long long)ip < 0)
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dso = kernel_dso;
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}
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dprintf(" ...... dso: %s\n", dso ? dso->name : "<not found>");
|
|
|
|
} else {
|
|
show = SHOW_HV;
|
|
level = 'H';
|
|
dprintf(" ...... dso: [hypervisor]\n");
|
|
}
|
|
|
|
if (show & show_mask) {
|
|
struct symbol *sym = NULL;
|
|
|
|
if (dso)
|
|
sym = dso->find_symbol(dso, ip);
|
|
|
|
if (hist_entry__add(thread, map, dso, sym, ip, level)) {
|
|
fprintf(stderr,
|
|
"problem incrementing symbol count, skipping event\n");
|
|
return -1;
|
|
}
|
|
}
|
|
total++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
|
|
{
|
|
struct thread *thread;
|
|
struct map *map = map__new(&event->mmap, NULL, 0);
|
|
|
|
thread = threads__findnew(event->mmap.pid, &threads, &last_match);
|
|
|
|
dprintf("%p [%p]: PERF_EVENT_MMAP %d: [%p(%p) @ %p]: %s\n",
|
|
(void *)(offset + head),
|
|
(void *)(long)(event->header.size),
|
|
event->mmap.pid,
|
|
(void *)(long)event->mmap.start,
|
|
(void *)(long)event->mmap.len,
|
|
(void *)(long)event->mmap.pgoff,
|
|
event->mmap.filename);
|
|
|
|
if (thread == NULL || map == NULL) {
|
|
dprintf("problem processing PERF_EVENT_MMAP, skipping event.\n");
|
|
return 0;
|
|
}
|
|
|
|
thread__insert_map(thread, map);
|
|
total_mmap++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
process_comm_event(event_t *event, unsigned long offset, unsigned long head)
|
|
{
|
|
struct thread *thread;
|
|
|
|
thread = threads__findnew(event->comm.pid, &threads, &last_match);
|
|
dprintf("%p [%p]: PERF_EVENT_COMM: %s:%d\n",
|
|
(void *)(offset + head),
|
|
(void *)(long)(event->header.size),
|
|
event->comm.comm, event->comm.pid);
|
|
|
|
if (thread == NULL ||
|
|
thread__set_comm(thread, event->comm.comm)) {
|
|
dprintf("problem processing PERF_EVENT_COMM, skipping event.\n");
|
|
return -1;
|
|
}
|
|
total_comm++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
process_fork_event(event_t *event, unsigned long offset, unsigned long head)
|
|
{
|
|
struct thread *thread;
|
|
struct thread *parent;
|
|
|
|
thread = threads__findnew(event->fork.pid, &threads, &last_match);
|
|
parent = threads__findnew(event->fork.ppid, &threads, &last_match);
|
|
dprintf("%p [%p]: PERF_EVENT_FORK: %d:%d\n",
|
|
(void *)(offset + head),
|
|
(void *)(long)(event->header.size),
|
|
event->fork.pid, event->fork.ppid);
|
|
|
|
if (!thread || !parent || thread__fork(thread, parent)) {
|
|
dprintf("problem processing PERF_EVENT_FORK, skipping event.\n");
|
|
return -1;
|
|
}
|
|
total_fork++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
process_event(event_t *event, unsigned long offset, unsigned long head)
|
|
{
|
|
switch (event->header.type) {
|
|
case PERF_EVENT_SAMPLE:
|
|
return process_sample_event(event, offset, head);
|
|
|
|
case PERF_EVENT_MMAP:
|
|
return process_mmap_event(event, offset, head);
|
|
|
|
case PERF_EVENT_COMM:
|
|
return process_comm_event(event, offset, head);
|
|
|
|
case PERF_EVENT_FORK:
|
|
return process_fork_event(event, offset, head);
|
|
/*
|
|
* We dont process them right now but they are fine:
|
|
*/
|
|
|
|
case PERF_EVENT_THROTTLE:
|
|
case PERF_EVENT_UNTHROTTLE:
|
|
return 0;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
parse_line(FILE *file, struct symbol *sym, u64 start, u64 len)
|
|
{
|
|
char *line = NULL, *tmp, *tmp2;
|
|
static const char *prev_line;
|
|
static const char *prev_color;
|
|
unsigned int offset;
|
|
size_t line_len;
|
|
s64 line_ip;
|
|
int ret;
|
|
char *c;
|
|
|
|
if (getline(&line, &line_len, file) < 0)
|
|
return -1;
|
|
if (!line)
|
|
return -1;
|
|
|
|
c = strchr(line, '\n');
|
|
if (c)
|
|
*c = 0;
|
|
|
|
line_ip = -1;
|
|
offset = 0;
|
|
ret = -2;
|
|
|
|
/*
|
|
* Strip leading spaces:
|
|
*/
|
|
tmp = line;
|
|
while (*tmp) {
|
|
if (*tmp != ' ')
|
|
break;
|
|
tmp++;
|
|
}
|
|
|
|
if (*tmp) {
|
|
/*
|
|
* Parse hexa addresses followed by ':'
|
|
*/
|
|
line_ip = strtoull(tmp, &tmp2, 16);
|
|
if (*tmp2 != ':')
|
|
line_ip = -1;
|
|
}
|
|
|
|
if (line_ip != -1) {
|
|
const char *path = NULL;
|
|
unsigned int hits = 0;
|
|
double percent = 0.0;
|
|
const char *color;
|
|
struct sym_ext *sym_ext = sym->priv;
|
|
|
|
offset = line_ip - start;
|
|
if (offset < len)
|
|
hits = sym->hist[offset];
|
|
|
|
if (offset < len && sym_ext) {
|
|
path = sym_ext[offset].path;
|
|
percent = sym_ext[offset].percent;
|
|
} else if (sym->hist_sum)
|
|
percent = 100.0 * hits / sym->hist_sum;
|
|
|
|
color = get_percent_color(percent);
|
|
|
|
/*
|
|
* Also color the filename and line if needed, with
|
|
* the same color than the percentage. Don't print it
|
|
* twice for close colored ip with the same filename:line
|
|
*/
|
|
if (path) {
|
|
if (!prev_line || strcmp(prev_line, path)
|
|
|| color != prev_color) {
|
|
color_fprintf(stdout, color, " %s", path);
|
|
prev_line = path;
|
|
prev_color = color;
|
|
}
|
|
}
|
|
|
|
color_fprintf(stdout, color, " %7.2f", percent);
|
|
printf(" : ");
|
|
color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", line);
|
|
} else {
|
|
if (!*line)
|
|
printf(" :\n");
|
|
else
|
|
printf(" : %s\n", line);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct rb_root root_sym_ext;
|
|
|
|
static void insert_source_line(struct sym_ext *sym_ext)
|
|
{
|
|
struct sym_ext *iter;
|
|
struct rb_node **p = &root_sym_ext.rb_node;
|
|
struct rb_node *parent = NULL;
|
|
|
|
while (*p != NULL) {
|
|
parent = *p;
|
|
iter = rb_entry(parent, struct sym_ext, node);
|
|
|
|
if (sym_ext->percent > iter->percent)
|
|
p = &(*p)->rb_left;
|
|
else
|
|
p = &(*p)->rb_right;
|
|
}
|
|
|
|
rb_link_node(&sym_ext->node, parent, p);
|
|
rb_insert_color(&sym_ext->node, &root_sym_ext);
|
|
}
|
|
|
|
static void free_source_line(struct symbol *sym, int len)
|
|
{
|
|
struct sym_ext *sym_ext = sym->priv;
|
|
int i;
|
|
|
|
if (!sym_ext)
|
|
return;
|
|
|
|
for (i = 0; i < len; i++)
|
|
free(sym_ext[i].path);
|
|
free(sym_ext);
|
|
|
|
sym->priv = NULL;
|
|
root_sym_ext = RB_ROOT;
|
|
}
|
|
|
|
/* Get the filename:line for the colored entries */
|
|
static void
|
|
get_source_line(struct symbol *sym, u64 start, int len, const char *filename)
|
|
{
|
|
int i;
|
|
char cmd[PATH_MAX * 2];
|
|
struct sym_ext *sym_ext;
|
|
|
|
if (!sym->hist_sum)
|
|
return;
|
|
|
|
sym->priv = calloc(len, sizeof(struct sym_ext));
|
|
if (!sym->priv)
|
|
return;
|
|
|
|
sym_ext = sym->priv;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
char *path = NULL;
|
|
size_t line_len;
|
|
u64 offset;
|
|
FILE *fp;
|
|
|
|
sym_ext[i].percent = 100.0 * sym->hist[i] / sym->hist_sum;
|
|
if (sym_ext[i].percent <= 0.5)
|
|
continue;
|
|
|
|
offset = start + i;
|
|
sprintf(cmd, "addr2line -e %s %016llx", filename, offset);
|
|
fp = popen(cmd, "r");
|
|
if (!fp)
|
|
continue;
|
|
|
|
if (getline(&path, &line_len, fp) < 0 || !line_len)
|
|
goto next;
|
|
|
|
sym_ext[i].path = malloc(sizeof(char) * line_len + 1);
|
|
if (!sym_ext[i].path)
|
|
goto next;
|
|
|
|
strcpy(sym_ext[i].path, path);
|
|
insert_source_line(&sym_ext[i]);
|
|
|
|
next:
|
|
pclose(fp);
|
|
}
|
|
}
|
|
|
|
static void print_summary(const char *filename)
|
|
{
|
|
struct sym_ext *sym_ext;
|
|
struct rb_node *node;
|
|
|
|
printf("\nSorted summary for file %s\n", filename);
|
|
printf("----------------------------------------------\n\n");
|
|
|
|
if (RB_EMPTY_ROOT(&root_sym_ext)) {
|
|
printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
|
|
return;
|
|
}
|
|
|
|
node = rb_first(&root_sym_ext);
|
|
while (node) {
|
|
double percent;
|
|
const char *color;
|
|
char *path;
|
|
|
|
sym_ext = rb_entry(node, struct sym_ext, node);
|
|
percent = sym_ext->percent;
|
|
color = get_percent_color(percent);
|
|
path = sym_ext->path;
|
|
|
|
color_fprintf(stdout, color, " %7.2f %s", percent, path);
|
|
node = rb_next(node);
|
|
}
|
|
}
|
|
|
|
static void annotate_sym(struct dso *dso, struct symbol *sym)
|
|
{
|
|
const char *filename = dso->name, *d_filename;
|
|
u64 start, end, len;
|
|
char command[PATH_MAX*2];
|
|
FILE *file;
|
|
|
|
if (!filename)
|
|
return;
|
|
if (sym->module)
|
|
filename = sym->module->path;
|
|
else if (dso == kernel_dso)
|
|
filename = vmlinux_name;
|
|
|
|
start = sym->obj_start;
|
|
if (!start)
|
|
start = sym->start;
|
|
if (full_paths)
|
|
d_filename = filename;
|
|
else
|
|
d_filename = basename(filename);
|
|
|
|
end = start + sym->end - sym->start + 1;
|
|
len = sym->end - sym->start;
|
|
|
|
if (print_line) {
|
|
get_source_line(sym, start, len, filename);
|
|
print_summary(filename);
|
|
}
|
|
|
|
printf("\n\n------------------------------------------------\n");
|
|
printf(" Percent | Source code & Disassembly of %s\n", d_filename);
|
|
printf("------------------------------------------------\n");
|
|
|
|
if (verbose >= 2)
|
|
printf("annotating [%p] %30s : [%p] %30s\n", dso, dso->name, sym, sym->name);
|
|
|
|
sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s|grep -v %s",
|
|
(u64)start, (u64)end, filename, filename);
|
|
|
|
if (verbose >= 3)
|
|
printf("doing: %s\n", command);
|
|
|
|
file = popen(command, "r");
|
|
if (!file)
|
|
return;
|
|
|
|
while (!feof(file)) {
|
|
if (parse_line(file, sym, start, len) < 0)
|
|
break;
|
|
}
|
|
|
|
pclose(file);
|
|
if (print_line)
|
|
free_source_line(sym, len);
|
|
}
|
|
|
|
static void find_annotations(void)
|
|
{
|
|
struct rb_node *nd;
|
|
struct dso *dso;
|
|
int count = 0;
|
|
|
|
list_for_each_entry(dso, &dsos, node) {
|
|
|
|
for (nd = rb_first(&dso->syms); nd; nd = rb_next(nd)) {
|
|
struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
|
|
|
|
if (sym->hist) {
|
|
annotate_sym(dso, sym);
|
|
count++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!count)
|
|
printf(" Error: symbol '%s' not present amongst the samples.\n", sym_hist_filter);
|
|
}
|
|
|
|
static int __cmd_annotate(void)
|
|
{
|
|
int ret, rc = EXIT_FAILURE;
|
|
unsigned long offset = 0;
|
|
unsigned long head = 0;
|
|
struct stat input_stat;
|
|
event_t *event;
|
|
uint32_t size;
|
|
char *buf;
|
|
|
|
register_idle_thread();
|
|
|
|
input = open(input_name, O_RDONLY);
|
|
if (input < 0) {
|
|
perror("failed to open file");
|
|
exit(-1);
|
|
}
|
|
|
|
ret = fstat(input, &input_stat);
|
|
if (ret < 0) {
|
|
perror("failed to stat file");
|
|
exit(-1);
|
|
}
|
|
|
|
if (!input_stat.st_size) {
|
|
fprintf(stderr, "zero-sized file, nothing to do!\n");
|
|
exit(0);
|
|
}
|
|
|
|
if (load_kernel() < 0) {
|
|
perror("failed to load kernel symbols");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
remap:
|
|
buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
|
|
MAP_SHARED, input, offset);
|
|
if (buf == MAP_FAILED) {
|
|
perror("failed to mmap file");
|
|
exit(-1);
|
|
}
|
|
|
|
more:
|
|
event = (event_t *)(buf + head);
|
|
|
|
size = event->header.size;
|
|
if (!size)
|
|
size = 8;
|
|
|
|
if (head + event->header.size >= page_size * mmap_window) {
|
|
unsigned long shift = page_size * (head / page_size);
|
|
int munmap_ret;
|
|
|
|
munmap_ret = munmap(buf, page_size * mmap_window);
|
|
assert(munmap_ret == 0);
|
|
|
|
offset += shift;
|
|
head -= shift;
|
|
goto remap;
|
|
}
|
|
|
|
size = event->header.size;
|
|
|
|
dprintf("%p [%p]: event: %d\n",
|
|
(void *)(offset + head),
|
|
(void *)(long)event->header.size,
|
|
event->header.type);
|
|
|
|
if (!size || process_event(event, offset, head) < 0) {
|
|
|
|
dprintf("%p [%p]: skipping unknown header type: %d\n",
|
|
(void *)(offset + head),
|
|
(void *)(long)(event->header.size),
|
|
event->header.type);
|
|
|
|
total_unknown++;
|
|
|
|
/*
|
|
* assume we lost track of the stream, check alignment, and
|
|
* increment a single u64 in the hope to catch on again 'soon'.
|
|
*/
|
|
|
|
if (unlikely(head & 7))
|
|
head &= ~7ULL;
|
|
|
|
size = 8;
|
|
}
|
|
|
|
head += size;
|
|
|
|
if (offset + head < (unsigned long)input_stat.st_size)
|
|
goto more;
|
|
|
|
rc = EXIT_SUCCESS;
|
|
close(input);
|
|
|
|
dprintf(" IP events: %10ld\n", total);
|
|
dprintf(" mmap events: %10ld\n", total_mmap);
|
|
dprintf(" comm events: %10ld\n", total_comm);
|
|
dprintf(" fork events: %10ld\n", total_fork);
|
|
dprintf(" unknown events: %10ld\n", total_unknown);
|
|
|
|
if (dump_trace)
|
|
return 0;
|
|
|
|
if (verbose >= 3)
|
|
threads__fprintf(stdout, &threads);
|
|
|
|
if (verbose >= 2)
|
|
dsos__fprintf(stdout);
|
|
|
|
collapse__resort();
|
|
output__resort();
|
|
|
|
find_annotations();
|
|
|
|
return rc;
|
|
}
|
|
|
|
static const char * const annotate_usage[] = {
|
|
"perf annotate [<options>] <command>",
|
|
NULL
|
|
};
|
|
|
|
static const struct option options[] = {
|
|
OPT_STRING('i', "input", &input_name, "file",
|
|
"input file name"),
|
|
OPT_STRING('s', "symbol", &sym_hist_filter, "symbol",
|
|
"symbol to annotate"),
|
|
OPT_BOOLEAN('v', "verbose", &verbose,
|
|
"be more verbose (show symbol address, etc)"),
|
|
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
|
|
"dump raw trace in ASCII"),
|
|
OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
|
|
OPT_BOOLEAN('m', "modules", &modules,
|
|
"load module symbols - WARNING: use only with -k and LIVE kernel"),
|
|
OPT_BOOLEAN('l', "print-line", &print_line,
|
|
"print matching source lines (may be slow)"),
|
|
OPT_BOOLEAN('P', "full-paths", &full_paths,
|
|
"Don't shorten the displayed pathnames"),
|
|
OPT_END()
|
|
};
|
|
|
|
static void setup_sorting(void)
|
|
{
|
|
char *tmp, *tok, *str = strdup(sort_order);
|
|
|
|
for (tok = strtok_r(str, ", ", &tmp);
|
|
tok; tok = strtok_r(NULL, ", ", &tmp)) {
|
|
if (sort_dimension__add(tok) < 0) {
|
|
error("Unknown --sort key: `%s'", tok);
|
|
usage_with_options(annotate_usage, options);
|
|
}
|
|
}
|
|
|
|
free(str);
|
|
}
|
|
|
|
int cmd_annotate(int argc, const char **argv, const char *prefix __used)
|
|
{
|
|
symbol__init();
|
|
|
|
page_size = getpagesize();
|
|
|
|
argc = parse_options(argc, argv, options, annotate_usage, 0);
|
|
|
|
setup_sorting();
|
|
|
|
if (argc) {
|
|
/*
|
|
* Special case: if there's an argument left then assume tha
|
|
* it's a symbol filter:
|
|
*/
|
|
if (argc > 1)
|
|
usage_with_options(annotate_usage, options);
|
|
|
|
sym_hist_filter = argv[0];
|
|
}
|
|
|
|
if (!sym_hist_filter)
|
|
usage_with_options(annotate_usage, options);
|
|
|
|
setup_pager();
|
|
|
|
return __cmd_annotate();
|
|
}
|