| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1372409006-8431-11-git-send-email-adrian.hunter@intel.com>
Date: Fri, 28 Jun 2013 11:43:21 +0300
From: Adrian Hunter <adrian.hunter@...el.com>
To: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc: linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
Namhyung Kim <namhyung@...il.com>,
Paul Mackerras <paulus@...ba.org>,
Peter Zijlstra <peterz@...radead.org>,
Stephane Eranian <eranian@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>
Subject: [PATCH V3 10/15] perf tools: add debug prints
It is useful to see the arguments to perf_event_open
and whether the perf events ring buffer was mmapped
per-cpu or per-thread. That information will now be
displayed when verbose is 2 i.e option -vv
Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Acked-by: Jiri Olsa <jolsa@...hat.com>
---
tools/perf/util/evlist.c | 3 +++
tools/perf/util/evsel.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 3c8b569..a660f56 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -14,6 +14,7 @@
#include "target.h"
#include "evlist.h"
#include "evsel.h"
+#include "debug.h"
#include <unistd.h>
#include "parse-events.h"
@@ -454,6 +455,7 @@ static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int m
int nr_cpus = cpu_map__nr(evlist->cpus);
int nr_threads = thread_map__nr(evlist->threads);
+ pr_debug2("perf event ring buffer mmapped per cpu\n");
for (cpu = 0; cpu < nr_cpus; cpu++) {
int output = -1;
@@ -492,6 +494,7 @@ static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot, in
int thread;
int nr_threads = thread_map__nr(evlist->threads);
+ pr_debug2("perf event ring buffer mmapped per thread\n");
for (thread = 0; thread < nr_threads; thread++) {
int output = -1;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 63b6f8c..d01d2cd 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -21,6 +21,7 @@
#include <linux/hw_breakpoint.h>
#include <linux/perf_event.h>
#include "perf_regs.h"
+#include "debug.h"
static struct {
bool sample_id_all;
@@ -817,6 +818,54 @@ static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread)
return fd;
}
+static void show_attr(struct perf_event_attr *attr)
+{
+ pr_debug2("------------------------------------------------------------\n");
+ pr_debug2("perf_event_attr:\n");
+ pr_debug2(" type %u\n", attr->type);
+ pr_debug2(" size %u\n", attr->size);
+ pr_debug2(" config %#"PRIx64"\n", (uint64_t)attr->config);
+ pr_debug2(" sample_period %"PRIu64"\n", (uint64_t)attr->sample_period);
+ pr_debug2(" sample_freq %"PRIu64"\n", (uint64_t)attr->sample_freq);
+ pr_debug2(" sample_type %#"PRIx64"\n", (uint64_t)attr->sample_type);
+ pr_debug2(" read_format %#"PRIx64"\n", (uint64_t)attr->read_format);
+
+ pr_debug2(" disabled %u ", attr->disabled);
+ pr_debug2("inherit %u\n", attr->inherit);
+ pr_debug2(" pinned %u ", attr->pinned);
+ pr_debug2("exclusive %u\n", attr->exclusive);
+ pr_debug2(" exclude_user %u ", attr->exclude_user);
+ pr_debug2("exclude_kernel %u\n", attr->exclude_kernel);
+ pr_debug2(" exclude_hv %u ", attr->exclude_hv);
+ pr_debug2("exclude_idle %u\n", attr->exclude_idle);
+ pr_debug2(" mmap %u ", attr->mmap);
+ pr_debug2("comm %u\n", attr->comm);
+ pr_debug2(" freq %u ", attr->freq);
+ pr_debug2("inherit_stat %u\n", attr->inherit_stat);
+ pr_debug2(" enable_on_exec %u ", attr->enable_on_exec);
+ pr_debug2("task %u\n", attr->task);
+ pr_debug2(" watermark %u ", attr->watermark);
+ pr_debug2("precise_ip %u\n", attr->precise_ip);
+ pr_debug2(" mmap_data %u ", attr->mmap_data);
+ pr_debug2("sample_id_all %u\n", attr->sample_id_all);
+ pr_debug2(" exclude_host %u ", attr->exclude_host);
+ pr_debug2("exclude_guest %u\n", attr->exclude_guest);
+ pr_debug2(" excl.callchain.kern %u ", attr->exclude_callchain_kernel);
+ pr_debug2("excl.callchain.user %u\n", attr->exclude_callchain_user);
+
+ pr_debug2(" wakeup_events %u\n", attr->wakeup_events);
+ pr_debug2(" wakeup_watermark %u\n", attr->wakeup_watermark);
+ pr_debug2(" bp_type %#x\n", attr->bp_type);
+ pr_debug2(" bp_addr %#"PRIx64"\n", (uint64_t)attr->bp_addr);
+ pr_debug2(" config1 %#"PRIx64"\n", (uint64_t)attr->config1);
+ pr_debug2(" bp_len %"PRIu64"\n", (uint64_t)attr->bp_len);
+ pr_debug2(" config2 %#"PRIx64"\n", (uint64_t)attr->config2);
+ pr_debug2(" branch_sample_type %#"PRIx64"\n", (uint64_t)attr->branch_sample_type);
+ pr_debug2(" sample_regs_user %#"PRIx64"\n", (uint64_t)attr->sample_regs_user);
+ pr_debug2(" sample_stack_user %u\n", attr->sample_stack_user);
+ pr_debug2("------------------------------------------------------------\n");
+}
+
static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
struct thread_map *threads)
{
@@ -840,6 +889,7 @@ retry_sample_id:
if (perf_missing_features.sample_id_all)
evsel->attr.sample_id_all = 0;
+ show_attr(&evsel->attr);
for (cpu = 0; cpu < cpus->nr; cpu++) {
for (thread = 0; thread < threads->nr; thread++) {
@@ -850,6 +900,8 @@ retry_sample_id:
group_fd = get_group_fd(evsel, cpu, thread);
+ pr_debug2("perf_event_open: pid %d cpu %d group_fd %d flags %#lx\n",
+ pid, cpus->map[cpu], group_fd, flags);
FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr,
pid,
cpus->map[cpu],
--
1.7.11.7
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists