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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Ingo Molnar](/assets/img/avatar_default.png)
Bye-bye Performance Counters, welcome Performance Events! In the past few months the perfcounters subsystem has grown out its initial role of counting hardware events, and has become (and is becoming) a much broader generic event enumeration, reporting, logging, monitoring, analysis facility. Naming its core object 'perf_counter' and naming the subsystem 'perfcounters' has become more and more of a misnomer. With pending code like hw-breakpoints support the 'counter' name is less and less appropriate. All in one, we've decided to rename the subsystem to 'performance events' and to propagate this rename through all fields, variables and API names. (in an ABI compatible fashion) The word 'event' is also a bit shorter than 'counter' - which makes it slightly more convenient to write/handle as well. Thanks goes to Stephane Eranian who first observed this misnomer and suggested a rename. User-space tooling and ABI compatibility is not affected - this patch should be function-invariant. (Also, defconfigs were not touched to keep the size down.) This patch has been generated via the following script: FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/PERF_EVENT_/PERF_RECORD_/g' \ -e 's/PERF_COUNTER/PERF_EVENT/g' \ -e 's/perf_counter/perf_event/g' \ -e 's/nb_counters/nb_events/g' \ -e 's/swcounter/swevent/g' \ -e 's/tpcounter_event/tp_event/g' \ $FILES for N in $(find . -name perf_counter.[ch]); do M=$(echo $N | sed 's/perf_counter/perf_event/g') mv $N $M done FILES=$(find . -name perf_event.*) sed -i \ -e 's/COUNTER_MASK/REG_MASK/g' \ -e 's/COUNTER/EVENT/g' \ -e 's/\<event\>/event_id/g' \ -e 's/counter/event/g' \ -e 's/Counter/Event/g' \ $FILES ... to keep it as correct as possible. This script can also be used by anyone who has pending perfcounters patches - it converts a Linux kernel tree over to the new naming. We tried to time this change to the point in time where the amount of pending patches is the smallest: the end of the merge window. Namespace clashes were fixed up in a preparatory patch - and some stylistic fallout will be fixed up in a subsequent patch. ( NOTE: 'counters' are still the proper terminology when we deal with hardware registers - and these sed scripts are a bit over-eager in renaming them. I've undone some of that, but in case there's something left where 'counter' would be better than 'event' we can undo that on an individual basis instead of touching an otherwise nicely automated patch. ) Suggested-by: Stephane Eranian <eranian@google.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Paul Mackerras <paulus@samba.org> Reviewed-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <linux-arch@vger.kernel.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
1143 lines
23 KiB
C
1143 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/debug.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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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 force;
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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 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 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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dump_printf("%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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dump_printf(" ... 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_RECORD_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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dump_printf(" ...... dso: %s\n", dso->name);
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} else if (event->header.misc & PERF_RECORD_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) {
|
|
ip = map->map_ip(map, ip);
|
|
dso = map->dso;
|
|
} else {
|
|
/*
|
|
* If this is outside of all known maps,
|
|
* and is a negative address, try to look it
|
|
* up in the kernel dso, as it might be a
|
|
* vsyscall (which executes in user-mode):
|
|
*/
|
|
if ((long long)ip < 0)
|
|
dso = kernel_dso;
|
|
}
|
|
dump_printf(" ...... dso: %s\n", dso ? dso->name : "<not found>");
|
|
|
|
} else {
|
|
show = SHOW_HV;
|
|
level = 'H';
|
|
dump_printf(" ...... 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);
|
|
|
|
dump_printf("%p [%p]: PERF_RECORD_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) {
|
|
dump_printf("problem processing PERF_RECORD_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);
|
|
dump_printf("%p [%p]: PERF_RECORD_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)) {
|
|
dump_printf("problem processing PERF_RECORD_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);
|
|
dump_printf("%p [%p]: PERF_RECORD_FORK: %d:%d\n",
|
|
(void *)(offset + head),
|
|
(void *)(long)(event->header.size),
|
|
event->fork.pid, event->fork.ppid);
|
|
|
|
/*
|
|
* A thread clone will have the same PID for both
|
|
* parent and child.
|
|
*/
|
|
if (thread == parent)
|
|
return 0;
|
|
|
|
if (!thread || !parent || thread__fork(thread, parent)) {
|
|
dump_printf("problem processing PERF_RECORD_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_RECORD_SAMPLE:
|
|
return process_sample_event(event, offset, head);
|
|
|
|
case PERF_RECORD_MMAP:
|
|
return process_mmap_event(event, offset, head);
|
|
|
|
case PERF_RECORD_COMM:
|
|
return process_comm_event(event, offset, head);
|
|
|
|
case PERF_RECORD_FORK:
|
|
return process_fork_event(event, offset, head);
|
|
/*
|
|
* We dont process them right now but they are fine:
|
|
*/
|
|
|
|
case PERF_RECORD_THROTTLE:
|
|
case PERF_RECORD_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(&threads, &last_match);
|
|
|
|
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 (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) {
|
|
fprintf(stderr, "file: %s not owned by current user or root\n", input_name);
|
|
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;
|
|
|
|
dump_printf("%p [%p]: event: %d\n",
|
|
(void *)(offset + head),
|
|
(void *)(long)event->header.size,
|
|
event->header.type);
|
|
|
|
if (!size || process_event(event, offset, head) < 0) {
|
|
|
|
dump_printf("%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);
|
|
|
|
dump_printf(" IP events: %10ld\n", total);
|
|
dump_printf(" mmap events: %10ld\n", total_mmap);
|
|
dump_printf(" comm events: %10ld\n", total_comm);
|
|
dump_printf(" fork events: %10ld\n", total_fork);
|
|
dump_printf(" 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('f', "force", &force, "don't complain, do it"),
|
|
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();
|
|
}
|