mirror of
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c3492a3a4e
Make "perf probe --cache --list" show only available cached events by checking build-id validity. E.g. without this patch: ---- $ ./perf probe --cache --add oldevent=cmd_probe $ make #(to update ./perf) $ ./perf probe --cache --add newevent=cmd_probe $ ./perf probe --cache --list /home/mhiramat/ksrc/linux/tools/perf/perf (061e90539bac69 probe_perf:newevent=cmd_probe /home/mhiramat/ksrc/linux/tools/perf/perf (c2e44d614e33e1 probe_perf:oldevent=cmd_probe ---- It shows both of old and new events but user can not use old one. With this; ---- $ ./perf probe --cache -l /home/mhiramat/ksrc/linux/tools/perf/perf (061e90539bac69 probe_perf:newevent=cmd_probe ---- This shows only new events which are on the existing binary. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/146831789417.17065.17896487479879669610.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
794 lines
18 KiB
C
794 lines
18 KiB
C
/*
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* build-id.c
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*
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* build-id support
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*
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* Copyright (C) 2009, 2010 Red Hat Inc.
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* Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme@redhat.com>
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*/
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#include "util.h"
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#include <stdio.h>
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#include "build-id.h"
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#include "event.h"
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#include "symbol.h"
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#include <linux/kernel.h>
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#include "debug.h"
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#include "session.h"
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#include "tool.h"
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#include "header.h"
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#include "vdso.h"
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#include "probe-file.h"
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static bool no_buildid_cache;
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int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample,
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struct perf_evsel *evsel __maybe_unused,
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struct machine *machine)
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{
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struct addr_location al;
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struct thread *thread = machine__findnew_thread(machine, sample->pid,
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sample->tid);
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if (thread == NULL) {
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pr_err("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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thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, &al);
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if (al.map != NULL)
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al.map->dso->hit = 1;
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thread__put(thread);
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return 0;
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}
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static int perf_event__exit_del_thread(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample
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__maybe_unused,
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struct machine *machine)
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{
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struct thread *thread = machine__findnew_thread(machine,
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event->fork.pid,
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event->fork.tid);
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dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid,
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event->fork.ppid, event->fork.ptid);
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if (thread) {
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machine__remove_thread(machine, thread);
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thread__put(thread);
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}
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return 0;
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}
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struct perf_tool build_id__mark_dso_hit_ops = {
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.sample = build_id__mark_dso_hit,
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.mmap = perf_event__process_mmap,
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.mmap2 = perf_event__process_mmap2,
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.fork = perf_event__process_fork,
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.exit = perf_event__exit_del_thread,
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.attr = perf_event__process_attr,
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.build_id = perf_event__process_build_id,
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.ordered_events = true,
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};
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int build_id__sprintf(const u8 *build_id, int len, char *bf)
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{
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char *bid = bf;
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const u8 *raw = build_id;
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int i;
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for (i = 0; i < len; ++i) {
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sprintf(bid, "%02x", *raw);
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++raw;
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bid += 2;
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}
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return (bid - bf) + 1;
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}
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int sysfs__sprintf_build_id(const char *root_dir, char *sbuild_id)
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{
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char notes[PATH_MAX];
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u8 build_id[BUILD_ID_SIZE];
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int ret;
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if (!root_dir)
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root_dir = "";
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scnprintf(notes, sizeof(notes), "%s/sys/kernel/notes", root_dir);
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ret = sysfs__read_build_id(notes, build_id, sizeof(build_id));
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if (ret < 0)
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return ret;
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return build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
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}
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int filename__sprintf_build_id(const char *pathname, char *sbuild_id)
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{
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u8 build_id[BUILD_ID_SIZE];
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int ret;
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ret = filename__read_build_id(pathname, build_id, sizeof(build_id));
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if (ret < 0)
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return ret;
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else if (ret != sizeof(build_id))
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return -EINVAL;
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return build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
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}
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/* asnprintf consolidates asprintf and snprintf */
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static int asnprintf(char **strp, size_t size, const char *fmt, ...)
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{
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va_list ap;
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int ret;
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if (!strp)
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return -EINVAL;
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va_start(ap, fmt);
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if (*strp)
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ret = vsnprintf(*strp, size, fmt, ap);
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else
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ret = vasprintf(strp, fmt, ap);
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va_end(ap);
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return ret;
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}
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char *build_id_cache__kallsyms_path(const char *sbuild_id, char *bf,
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size_t size)
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{
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bool retry_old = true;
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snprintf(bf, size, "%s/%s/%s/kallsyms",
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buildid_dir, DSO__NAME_KALLSYMS, sbuild_id);
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retry:
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if (!access(bf, F_OK))
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return bf;
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if (retry_old) {
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/* Try old style kallsyms cache */
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snprintf(bf, size, "%s/%s/%s",
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buildid_dir, DSO__NAME_KALLSYMS, sbuild_id);
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retry_old = false;
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goto retry;
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}
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return NULL;
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}
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char *build_id_cache__linkname(const char *sbuild_id, char *bf, size_t size)
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{
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char *tmp = bf;
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int ret = asnprintf(&bf, size, "%s/.build-id/%.2s/%s", buildid_dir,
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sbuild_id, sbuild_id + 2);
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if (ret < 0 || (tmp && size < (unsigned int)ret))
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return NULL;
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return bf;
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}
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char *build_id_cache__origname(const char *sbuild_id)
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{
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char *linkname;
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char buf[PATH_MAX];
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char *ret = NULL, *p;
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size_t offs = 5; /* == strlen("../..") */
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linkname = build_id_cache__linkname(sbuild_id, NULL, 0);
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if (!linkname)
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return NULL;
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if (readlink(linkname, buf, PATH_MAX) < 0)
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goto out;
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/* The link should be "../..<origpath>/<sbuild_id>" */
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p = strrchr(buf, '/'); /* Cut off the "/<sbuild_id>" */
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if (p && (p > buf + offs)) {
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*p = '\0';
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if (buf[offs + 1] == '[')
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offs++; /*
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* This is a DSO name, like [kernel.kallsyms].
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* Skip the first '/', since this is not the
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* cache of a regular file.
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*/
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ret = strdup(buf + offs); /* Skip "../..[/]" */
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}
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out:
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free(linkname);
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return ret;
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}
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/* Check if the given build_id cache is valid on current running system */
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static bool build_id_cache__valid_id(char *sbuild_id)
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{
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char real_sbuild_id[SBUILD_ID_SIZE] = "";
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char *pathname;
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int ret = 0;
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bool result = false;
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pathname = build_id_cache__origname(sbuild_id);
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if (!pathname)
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return false;
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if (!strcmp(pathname, DSO__NAME_KALLSYMS))
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ret = sysfs__sprintf_build_id("/", real_sbuild_id);
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else if (pathname[0] == '/')
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ret = filename__sprintf_build_id(pathname, real_sbuild_id);
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else
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ret = -EINVAL; /* Should we support other special DSO cache? */
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if (ret >= 0)
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result = (strcmp(sbuild_id, real_sbuild_id) == 0);
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free(pathname);
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return result;
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}
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static const char *build_id_cache__basename(bool is_kallsyms, bool is_vdso)
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{
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return is_kallsyms ? "kallsyms" : (is_vdso ? "vdso" : "elf");
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}
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char *dso__build_id_filename(const struct dso *dso, char *bf, size_t size)
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{
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bool is_kallsyms = dso__is_kallsyms((struct dso *)dso);
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bool is_vdso = dso__is_vdso((struct dso *)dso);
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char sbuild_id[SBUILD_ID_SIZE];
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char *linkname;
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bool alloc = (bf == NULL);
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int ret;
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if (!dso->has_build_id)
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return NULL;
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build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
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linkname = build_id_cache__linkname(sbuild_id, NULL, 0);
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if (!linkname)
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return NULL;
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/* Check if old style build_id cache */
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if (is_regular_file(linkname))
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ret = asnprintf(&bf, size, "%s", linkname);
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else
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ret = asnprintf(&bf, size, "%s/%s", linkname,
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build_id_cache__basename(is_kallsyms, is_vdso));
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if (ret < 0 || (!alloc && size < (unsigned int)ret))
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bf = NULL;
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free(linkname);
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return bf;
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}
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bool dso__build_id_is_kmod(const struct dso *dso, char *bf, size_t size)
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{
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char *id_name = NULL, *ch;
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struct stat sb;
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char sbuild_id[SBUILD_ID_SIZE];
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if (!dso->has_build_id)
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goto err;
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build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
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id_name = build_id_cache__linkname(sbuild_id, NULL, 0);
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if (!id_name)
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goto err;
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if (access(id_name, F_OK))
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goto err;
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if (lstat(id_name, &sb) == -1)
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goto err;
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if ((size_t)sb.st_size > size - 1)
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goto err;
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if (readlink(id_name, bf, size - 1) < 0)
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goto err;
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bf[sb.st_size] = '\0';
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/*
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* link should be:
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* ../../lib/modules/4.4.0-rc4/kernel/net/ipv4/netfilter/nf_nat_ipv4.ko/a09fe3eb3147dafa4e3b31dbd6257e4d696bdc92
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*/
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ch = strrchr(bf, '/');
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if (!ch)
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goto err;
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if (ch - 3 < bf)
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goto err;
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free(id_name);
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return strncmp(".ko", ch - 3, 3) == 0;
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err:
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pr_err("Invalid build id: %s\n", id_name ? :
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dso->long_name ? :
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dso->short_name ? :
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"[unknown]");
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free(id_name);
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return false;
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}
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#define dsos__for_each_with_build_id(pos, head) \
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list_for_each_entry(pos, head, node) \
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if (!pos->has_build_id) \
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continue; \
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else
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static int write_buildid(const char *name, size_t name_len, u8 *build_id,
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pid_t pid, u16 misc, int fd)
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{
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int err;
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struct build_id_event b;
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size_t len;
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len = name_len + 1;
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len = PERF_ALIGN(len, NAME_ALIGN);
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memset(&b, 0, sizeof(b));
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memcpy(&b.build_id, build_id, BUILD_ID_SIZE);
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b.pid = pid;
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b.header.misc = misc;
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b.header.size = sizeof(b) + len;
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err = writen(fd, &b, sizeof(b));
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if (err < 0)
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return err;
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return write_padded(fd, name, name_len + 1, len);
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}
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static int machine__write_buildid_table(struct machine *machine, int fd)
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{
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int err = 0;
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char nm[PATH_MAX];
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struct dso *pos;
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u16 kmisc = PERF_RECORD_MISC_KERNEL,
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umisc = PERF_RECORD_MISC_USER;
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if (!machine__is_host(machine)) {
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kmisc = PERF_RECORD_MISC_GUEST_KERNEL;
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umisc = PERF_RECORD_MISC_GUEST_USER;
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}
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dsos__for_each_with_build_id(pos, &machine->dsos.head) {
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const char *name;
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size_t name_len;
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bool in_kernel = false;
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if (!pos->hit && !dso__is_vdso(pos))
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continue;
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if (dso__is_vdso(pos)) {
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name = pos->short_name;
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name_len = pos->short_name_len;
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} else if (dso__is_kcore(pos)) {
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machine__mmap_name(machine, nm, sizeof(nm));
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name = nm;
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name_len = strlen(nm);
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} else {
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name = pos->long_name;
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name_len = pos->long_name_len;
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}
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in_kernel = pos->kernel ||
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is_kernel_module(name,
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PERF_RECORD_MISC_CPUMODE_UNKNOWN);
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err = write_buildid(name, name_len, pos->build_id, machine->pid,
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in_kernel ? kmisc : umisc, fd);
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if (err)
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break;
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}
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return err;
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}
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int perf_session__write_buildid_table(struct perf_session *session, int fd)
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{
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struct rb_node *nd;
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int err = machine__write_buildid_table(&session->machines.host, fd);
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if (err)
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return err;
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for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
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struct machine *pos = rb_entry(nd, struct machine, rb_node);
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err = machine__write_buildid_table(pos, fd);
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if (err)
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break;
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}
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return err;
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}
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static int __dsos__hit_all(struct list_head *head)
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{
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struct dso *pos;
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list_for_each_entry(pos, head, node)
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pos->hit = true;
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return 0;
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}
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static int machine__hit_all_dsos(struct machine *machine)
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{
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return __dsos__hit_all(&machine->dsos.head);
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}
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int dsos__hit_all(struct perf_session *session)
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{
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struct rb_node *nd;
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int err;
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err = machine__hit_all_dsos(&session->machines.host);
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if (err)
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return err;
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for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
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struct machine *pos = rb_entry(nd, struct machine, rb_node);
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err = machine__hit_all_dsos(pos);
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if (err)
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return err;
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}
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return 0;
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}
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void disable_buildid_cache(void)
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{
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no_buildid_cache = true;
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}
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static bool lsdir_bid_head_filter(const char *name __maybe_unused,
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struct dirent *d __maybe_unused)
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{
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return (strlen(d->d_name) == 2) &&
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isxdigit(d->d_name[0]) && isxdigit(d->d_name[1]);
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}
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static bool lsdir_bid_tail_filter(const char *name __maybe_unused,
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struct dirent *d __maybe_unused)
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{
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int i = 0;
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while (isxdigit(d->d_name[i]) && i < SBUILD_ID_SIZE - 3)
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i++;
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return (i == SBUILD_ID_SIZE - 3) && (d->d_name[i] == '\0');
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}
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struct strlist *build_id_cache__list_all(bool validonly)
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{
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struct strlist *toplist, *linklist = NULL, *bidlist;
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struct str_node *nd, *nd2;
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char *topdir, *linkdir = NULL;
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char sbuild_id[SBUILD_ID_SIZE];
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/* for filename__ functions */
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if (validonly)
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symbol__init(NULL);
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/* Open the top-level directory */
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if (asprintf(&topdir, "%s/.build-id/", buildid_dir) < 0)
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return NULL;
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bidlist = strlist__new(NULL, NULL);
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if (!bidlist)
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goto out;
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toplist = lsdir(topdir, lsdir_bid_head_filter);
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if (!toplist) {
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pr_debug("Error in lsdir(%s): %d\n", topdir, errno);
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/* If there is no buildid cache, return an empty list */
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if (errno == ENOENT)
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goto out;
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goto err_out;
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}
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strlist__for_each_entry(nd, toplist) {
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if (asprintf(&linkdir, "%s/%s", topdir, nd->s) < 0)
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goto err_out;
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/* Open the lower-level directory */
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linklist = lsdir(linkdir, lsdir_bid_tail_filter);
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if (!linklist) {
|
|
pr_debug("Error in lsdir(%s): %d\n", linkdir, errno);
|
|
goto err_out;
|
|
}
|
|
strlist__for_each_entry(nd2, linklist) {
|
|
if (snprintf(sbuild_id, SBUILD_ID_SIZE, "%s%s",
|
|
nd->s, nd2->s) != SBUILD_ID_SIZE - 1)
|
|
goto err_out;
|
|
if (validonly && !build_id_cache__valid_id(sbuild_id))
|
|
continue;
|
|
if (strlist__add(bidlist, sbuild_id) < 0)
|
|
goto err_out;
|
|
}
|
|
strlist__delete(linklist);
|
|
zfree(&linkdir);
|
|
}
|
|
|
|
out_free:
|
|
strlist__delete(toplist);
|
|
out:
|
|
free(topdir);
|
|
|
|
return bidlist;
|
|
|
|
err_out:
|
|
strlist__delete(linklist);
|
|
zfree(&linkdir);
|
|
strlist__delete(bidlist);
|
|
bidlist = NULL;
|
|
goto out_free;
|
|
}
|
|
|
|
char *build_id_cache__cachedir(const char *sbuild_id, const char *name,
|
|
bool is_kallsyms, bool is_vdso)
|
|
{
|
|
char *realname = (char *)name, *filename;
|
|
bool slash = is_kallsyms || is_vdso;
|
|
|
|
if (!slash) {
|
|
realname = realpath(name, NULL);
|
|
if (!realname)
|
|
return NULL;
|
|
}
|
|
|
|
if (asprintf(&filename, "%s%s%s%s%s", buildid_dir, slash ? "/" : "",
|
|
is_vdso ? DSO__NAME_VDSO : realname,
|
|
sbuild_id ? "/" : "", sbuild_id ?: "") < 0)
|
|
filename = NULL;
|
|
|
|
if (!slash)
|
|
free(realname);
|
|
|
|
return filename;
|
|
}
|
|
|
|
int build_id_cache__list_build_ids(const char *pathname,
|
|
struct strlist **result)
|
|
{
|
|
char *dir_name;
|
|
int ret = 0;
|
|
|
|
dir_name = build_id_cache__cachedir(NULL, pathname, false, false);
|
|
if (!dir_name)
|
|
return -ENOMEM;
|
|
|
|
*result = lsdir(dir_name, lsdir_no_dot_filter);
|
|
if (!*result)
|
|
ret = -errno;
|
|
free(dir_name);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if defined(HAVE_LIBELF_SUPPORT) && defined(HAVE_GELF_GETNOTE_SUPPORT)
|
|
static int build_id_cache__add_sdt_cache(const char *sbuild_id,
|
|
const char *realname)
|
|
{
|
|
struct probe_cache *cache;
|
|
int ret;
|
|
|
|
cache = probe_cache__new(sbuild_id);
|
|
if (!cache)
|
|
return -1;
|
|
|
|
ret = probe_cache__scan_sdt(cache, realname);
|
|
if (ret >= 0) {
|
|
pr_debug("Found %d SDTs in %s\n", ret, realname);
|
|
if (probe_cache__commit(cache) < 0)
|
|
ret = -1;
|
|
}
|
|
probe_cache__delete(cache);
|
|
return ret;
|
|
}
|
|
#else
|
|
#define build_id_cache__add_sdt_cache(sbuild_id, realname) (0)
|
|
#endif
|
|
|
|
int build_id_cache__add_s(const char *sbuild_id, const char *name,
|
|
bool is_kallsyms, bool is_vdso)
|
|
{
|
|
const size_t size = PATH_MAX;
|
|
char *realname = NULL, *filename = NULL, *dir_name = NULL,
|
|
*linkname = zalloc(size), *tmp;
|
|
int err = -1;
|
|
|
|
if (!is_kallsyms) {
|
|
realname = realpath(name, NULL);
|
|
if (!realname)
|
|
goto out_free;
|
|
}
|
|
|
|
dir_name = build_id_cache__cachedir(sbuild_id, name,
|
|
is_kallsyms, is_vdso);
|
|
if (!dir_name)
|
|
goto out_free;
|
|
|
|
/* Remove old style build-id cache */
|
|
if (is_regular_file(dir_name))
|
|
if (unlink(dir_name))
|
|
goto out_free;
|
|
|
|
if (mkdir_p(dir_name, 0755))
|
|
goto out_free;
|
|
|
|
/* Save the allocated buildid dirname */
|
|
if (asprintf(&filename, "%s/%s", dir_name,
|
|
build_id_cache__basename(is_kallsyms, is_vdso)) < 0) {
|
|
filename = NULL;
|
|
goto out_free;
|
|
}
|
|
|
|
if (access(filename, F_OK)) {
|
|
if (is_kallsyms) {
|
|
if (copyfile("/proc/kallsyms", filename))
|
|
goto out_free;
|
|
} else if (link(realname, filename) && errno != EEXIST &&
|
|
copyfile(name, filename))
|
|
goto out_free;
|
|
}
|
|
|
|
if (!build_id_cache__linkname(sbuild_id, linkname, size))
|
|
goto out_free;
|
|
tmp = strrchr(linkname, '/');
|
|
*tmp = '\0';
|
|
|
|
if (access(linkname, X_OK) && mkdir_p(linkname, 0755))
|
|
goto out_free;
|
|
|
|
*tmp = '/';
|
|
tmp = dir_name + strlen(buildid_dir) - 5;
|
|
memcpy(tmp, "../..", 5);
|
|
|
|
if (symlink(tmp, linkname) == 0)
|
|
err = 0;
|
|
|
|
/* Update SDT cache : error is just warned */
|
|
if (build_id_cache__add_sdt_cache(sbuild_id, realname) < 0)
|
|
pr_debug("Failed to update/scan SDT cache for %s\n", realname);
|
|
|
|
out_free:
|
|
if (!is_kallsyms)
|
|
free(realname);
|
|
free(filename);
|
|
free(dir_name);
|
|
free(linkname);
|
|
return err;
|
|
}
|
|
|
|
static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size,
|
|
const char *name, bool is_kallsyms,
|
|
bool is_vdso)
|
|
{
|
|
char sbuild_id[SBUILD_ID_SIZE];
|
|
|
|
build_id__sprintf(build_id, build_id_size, sbuild_id);
|
|
|
|
return build_id_cache__add_s(sbuild_id, name, is_kallsyms, is_vdso);
|
|
}
|
|
|
|
bool build_id_cache__cached(const char *sbuild_id)
|
|
{
|
|
bool ret = false;
|
|
char *filename = build_id_cache__linkname(sbuild_id, NULL, 0);
|
|
|
|
if (filename && !access(filename, F_OK))
|
|
ret = true;
|
|
free(filename);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int build_id_cache__remove_s(const char *sbuild_id)
|
|
{
|
|
const size_t size = PATH_MAX;
|
|
char *filename = zalloc(size),
|
|
*linkname = zalloc(size), *tmp;
|
|
int err = -1;
|
|
|
|
if (filename == NULL || linkname == NULL)
|
|
goto out_free;
|
|
|
|
if (!build_id_cache__linkname(sbuild_id, linkname, size))
|
|
goto out_free;
|
|
|
|
if (access(linkname, F_OK))
|
|
goto out_free;
|
|
|
|
if (readlink(linkname, filename, size - 1) < 0)
|
|
goto out_free;
|
|
|
|
if (unlink(linkname))
|
|
goto out_free;
|
|
|
|
/*
|
|
* Since the link is relative, we must make it absolute:
|
|
*/
|
|
tmp = strrchr(linkname, '/') + 1;
|
|
snprintf(tmp, size - (tmp - linkname), "%s", filename);
|
|
|
|
if (rm_rf(linkname))
|
|
goto out_free;
|
|
|
|
err = 0;
|
|
out_free:
|
|
free(filename);
|
|
free(linkname);
|
|
return err;
|
|
}
|
|
|
|
static int dso__cache_build_id(struct dso *dso, struct machine *machine)
|
|
{
|
|
bool is_kallsyms = dso__is_kallsyms(dso);
|
|
bool is_vdso = dso__is_vdso(dso);
|
|
const char *name = dso->long_name;
|
|
char nm[PATH_MAX];
|
|
|
|
if (dso__is_kcore(dso)) {
|
|
is_kallsyms = true;
|
|
machine__mmap_name(machine, nm, sizeof(nm));
|
|
name = nm;
|
|
}
|
|
return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id), name,
|
|
is_kallsyms, is_vdso);
|
|
}
|
|
|
|
static int __dsos__cache_build_ids(struct list_head *head,
|
|
struct machine *machine)
|
|
{
|
|
struct dso *pos;
|
|
int err = 0;
|
|
|
|
dsos__for_each_with_build_id(pos, head)
|
|
if (dso__cache_build_id(pos, machine))
|
|
err = -1;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int machine__cache_build_ids(struct machine *machine)
|
|
{
|
|
return __dsos__cache_build_ids(&machine->dsos.head, machine);
|
|
}
|
|
|
|
int perf_session__cache_build_ids(struct perf_session *session)
|
|
{
|
|
struct rb_node *nd;
|
|
int ret;
|
|
|
|
if (no_buildid_cache)
|
|
return 0;
|
|
|
|
if (mkdir(buildid_dir, 0755) != 0 && errno != EEXIST)
|
|
return -1;
|
|
|
|
ret = machine__cache_build_ids(&session->machines.host);
|
|
|
|
for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
|
|
struct machine *pos = rb_entry(nd, struct machine, rb_node);
|
|
ret |= machine__cache_build_ids(pos);
|
|
}
|
|
return ret ? -1 : 0;
|
|
}
|
|
|
|
static bool machine__read_build_ids(struct machine *machine, bool with_hits)
|
|
{
|
|
return __dsos__read_build_ids(&machine->dsos.head, with_hits);
|
|
}
|
|
|
|
bool perf_session__read_build_ids(struct perf_session *session, bool with_hits)
|
|
{
|
|
struct rb_node *nd;
|
|
bool ret = machine__read_build_ids(&session->machines.host, with_hits);
|
|
|
|
for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
|
|
struct machine *pos = rb_entry(nd, struct machine, rb_node);
|
|
ret |= machine__read_build_ids(pos, with_hits);
|
|
}
|
|
|
|
return ret;
|
|
}
|