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-rw-r--r--tools/perf/util/header.c78
1 files changed, 54 insertions, 24 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index d89c9c7ef4e5..76ed7d03e500 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1,17 +1,26 @@
+#include <errno.h>
+#include <inttypes.h>
#include "util.h"
+#include "string2.h"
+#include <sys/param.h>
#include <sys/types.h>
#include <byteswap.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
+#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/kernel.h>
#include <linux/bitops.h>
+#include <sys/stat.h>
+#include <sys/types.h>
#include <sys/utsname.h>
+#include <unistd.h>
#include "evlist.h"
#include "evsel.h"
#include "header.h"
+#include "memswap.h"
#include "../perf.h"
#include "trace-event.h"
#include "session.h"
@@ -26,6 +35,8 @@
#include <api/fs/fs.h>
#include "asm/bug.h"
+#include "sane_ctype.h"
+
/*
* magic2 = "PERFILE2"
* must be a numerical value to let the endianness
@@ -41,6 +52,8 @@ static const u64 __perf_magic2_sw = 0x50455246494c4532ULL;
#define PERF_MAGIC __perf_magic2
+const char perf_version_string[] = PERF_VERSION;
+
struct perf_file_attr {
struct perf_event_attr attr;
struct perf_file_section ids;
@@ -293,11 +306,7 @@ static int write_nrcpus(int fd, struct perf_header *h __maybe_unused,
u32 nrc, nra;
int ret;
- nr = sysconf(_SC_NPROCESSORS_CONF);
- if (nr < 0)
- return -1;
-
- nrc = (u32)(nr & UINT_MAX);
+ nrc = cpu__max_present_cpu();
nr = sysconf(_SC_NPROCESSORS_ONLN);
if (nr < 0)
@@ -372,15 +381,11 @@ static int write_cmdline(int fd, struct perf_header *h __maybe_unused,
struct perf_evlist *evlist __maybe_unused)
{
char buf[MAXPATHLEN];
- char proc[32];
u32 n;
int i, ret;
- /*
- * actual atual path to perf binary
- */
- sprintf(proc, "/proc/%d/exe", getpid());
- ret = readlink(proc, buf, sizeof(buf));
+ /* actual path to perf binary */
+ ret = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
if (ret <= 0)
return -1;
@@ -503,24 +508,29 @@ static void free_cpu_topo(struct cpu_topo *tp)
static struct cpu_topo *build_cpu_topology(void)
{
- struct cpu_topo *tp;
+ struct cpu_topo *tp = NULL;
void *addr;
u32 nr, i;
size_t sz;
long ncpus;
int ret = -1;
+ struct cpu_map *map;
- ncpus = sysconf(_SC_NPROCESSORS_CONF);
- if (ncpus < 0)
+ ncpus = cpu__max_present_cpu();
+
+ /* build online CPU map */
+ map = cpu_map__new(NULL);
+ if (map == NULL) {
+ pr_debug("failed to get system cpumap\n");
return NULL;
+ }
nr = (u32)(ncpus & UINT_MAX);
sz = nr * sizeof(char *);
-
addr = calloc(1, sizeof(*tp) + 2 * sz);
if (!addr)
- return NULL;
+ goto out_free;
tp = addr;
tp->cpu_nr = nr;
@@ -530,10 +540,16 @@ static struct cpu_topo *build_cpu_topology(void)
tp->thread_siblings = addr;
for (i = 0; i < nr; i++) {
+ if (!cpu_map__has(map, i))
+ continue;
+
ret = build_cpu_topo(tp, i);
if (ret < 0)
break;
}
+
+out_free:
+ cpu_map__put(map);
if (ret) {
free_cpu_topo(tp);
tp = NULL;
@@ -826,7 +842,7 @@ static int write_group_desc(int fd, struct perf_header *h __maybe_unused,
/*
* default get_cpuid(): nothing gets recorded
- * actual implementation must be in arch/$(ARCH)/util/header.c
+ * actual implementation must be in arch/$(SRCARCH)/util/header.c
*/
int __weak get_cpuid(char *buffer __maybe_unused, size_t sz __maybe_unused)
{
@@ -1124,7 +1140,7 @@ static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused,
{
int nr, i;
char *str;
- int cpu_nr = ph->env.nr_cpus_online;
+ int cpu_nr = ph->env.nr_cpus_avail;
nr = ph->env.nr_sibling_cores;
str = ph->env.sibling_cores;
@@ -1259,7 +1275,7 @@ error:
}
static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val,
- void *priv __attribute__((unused)))
+ void *priv __maybe_unused)
{
return fprintf(fp, ", %s = %s", name, val);
}
@@ -1454,8 +1470,16 @@ static int __event_process_build_id(struct build_id_event *bev,
dso__set_build_id(dso, &bev->build_id);
- if (!is_kernel_module(filename, cpumode))
- dso->kernel = dso_type;
+ if (dso_type != DSO_TYPE_USER) {
+ struct kmod_path m = { .name = NULL, };
+
+ if (!kmod_path__parse_name(&m, filename) && m.kmod)
+ dso__set_module_info(dso, &m, machine);
+ else
+ dso->kernel = dso_type;
+
+ free(m.name);
+ }
build_id__sprintf(dso->build_id, sizeof(dso->build_id),
sbuild_id);
@@ -1779,7 +1803,7 @@ static int process_cpu_topology(struct perf_file_section *section,
u32 nr, i;
char *str;
struct strbuf sb;
- int cpu_nr = ph->env.nr_cpus_online;
+ int cpu_nr = ph->env.nr_cpus_avail;
u64 size = 0;
ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu));
@@ -1860,7 +1884,7 @@ static int process_cpu_topology(struct perf_file_section *section,
if (ph->needs_swap)
nr = bswap_32(nr);
- if (nr > (u32)cpu_nr) {
+ if (nr != (u32)-1 && nr > (u32)cpu_nr) {
pr_debug("socket_id number is too big."
"You may need to upgrade the perf tool.\n");
goto free_cpu;
@@ -2265,6 +2289,9 @@ int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full)
perf_header__process_sections(header, fd, &hd,
perf_file_section__fprintf_info);
+ if (session->file->is_pipe)
+ return 0;
+
fprintf(fp, "# missing features: ");
for_each_clear_bit(bit, header->adds_features, HEADER_LAST_FEATURE) {
if (bit)
@@ -2801,8 +2828,10 @@ static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel,
}
event = pevent_find_event(pevent, evsel->attr.config);
- if (event == NULL)
+ if (event == NULL) {
+ pr_debug("cannot find event format for %d\n", (int)evsel->attr.config);
return -1;
+ }
if (!evsel->name) {
snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name);
@@ -3201,6 +3230,7 @@ int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
case PERF_EVENT_UPDATE__SCALE:
ev_scale = (struct event_update_event_scale *) ev->data;
evsel->scale = ev_scale->scale;
+ break;
case PERF_EVENT_UPDATE__CPUS:
ev_cpus = (struct event_update_event_cpus *) ev->data;
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