From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757940Ab3GRKg1 (ORCPT ); Thu, 18 Jul 2013 06:36:27 -0400 Received: from mga09.intel.com ([134.134.136.24]:56267 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754638Ab3GRKgV (ORCPT ); Thu, 18 Jul 2013 06:36:21 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.89,692,1367996400"; d="scan'208";a="347700574" From: Adrian Hunter To: Arnaldo Carvalho de Melo Cc: linux-kernel@vger.kernel.org, David Ahern , Frederic Weisbecker , Jiri Olsa , Mike Galbraith , Namhyung Kim , Paul Mackerras , Peter Zijlstra , Stephane Eranian , Ingo Molnar Subject: [PATCH V8 01/15] perf tools: add debug prints Date: Thu, 18 Jul 2013 13:42:43 +0300 Message-Id: <1374144177-24762-2-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1374144177-24762-1-git-send-email-adrian.hunter@intel.com> References: <1374144177-24762-1-git-send-email-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- tools/perf/util/evlist.c | 3 +++ tools/perf/util/evsel.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/python.c | 20 +++++++++++++++++ 3 files changed, 81 insertions(+) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 42ea4e9..2b77b33 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 #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 a635461..0b9c4fd 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -21,6 +21,7 @@ #include "thread_map.h" #include "target.h" #include "perf_regs.h" +#include "debug.h" static struct { bool sample_id_all; @@ -817,6 +818,58 @@ static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread) return fd; } +static size_t perf_event_attr__fprintf(struct perf_event_attr *attr, FILE *fp) +{ + size_t ret; + + ret = fprintf(fp, "------------------------------------------------------------\n"); + ret += fprintf(fp, "perf_event_attr:\n"); + ret += fprintf(fp, " type %u\n", attr->type); + ret += fprintf(fp, " size %u\n", attr->size); + ret += fprintf(fp, " config %#"PRIx64"\n", (uint64_t)attr->config); + ret += fprintf(fp, " sample_period %"PRIu64"\n", (uint64_t)attr->sample_period); + ret += fprintf(fp, " sample_freq %"PRIu64"\n", (uint64_t)attr->sample_freq); + ret += fprintf(fp, " sample_type %#"PRIx64"\n", (uint64_t)attr->sample_type); + ret += fprintf(fp, " read_format %#"PRIx64"\n", (uint64_t)attr->read_format); + + ret += fprintf(fp, " disabled %u ", attr->disabled); + ret += fprintf(fp, "inherit %u\n", attr->inherit); + ret += fprintf(fp, " pinned %u ", attr->pinned); + ret += fprintf(fp, "exclusive %u\n", attr->exclusive); + ret += fprintf(fp, " exclude_user %u ", attr->exclude_user); + ret += fprintf(fp, "exclude_kernel %u\n", attr->exclude_kernel); + ret += fprintf(fp, " exclude_hv %u ", attr->exclude_hv); + ret += fprintf(fp, "exclude_idle %u\n", attr->exclude_idle); + ret += fprintf(fp, " mmap %u ", attr->mmap); + ret += fprintf(fp, "comm %u\n", attr->comm); + ret += fprintf(fp, " freq %u ", attr->freq); + ret += fprintf(fp, "inherit_stat %u\n", attr->inherit_stat); + ret += fprintf(fp, " enable_on_exec %u ", attr->enable_on_exec); + ret += fprintf(fp, "task %u\n", attr->task); + ret += fprintf(fp, " watermark %u ", attr->watermark); + ret += fprintf(fp, "precise_ip %u\n", attr->precise_ip); + ret += fprintf(fp, " mmap_data %u ", attr->mmap_data); + ret += fprintf(fp, "sample_id_all %u\n", attr->sample_id_all); + ret += fprintf(fp, " exclude_host %u ", attr->exclude_host); + ret += fprintf(fp, "exclude_guest %u\n", attr->exclude_guest); + ret += fprintf(fp, " excl.callchain.kern %u ", attr->exclude_callchain_kernel); + ret += fprintf(fp, "excl.callchain.user %u\n", attr->exclude_callchain_user); + + ret += fprintf(fp, " wakeup_events %u\n", attr->wakeup_events); + ret += fprintf(fp, " wakeup_watermark %u\n", attr->wakeup_watermark); + ret += fprintf(fp, " bp_type %#x\n", attr->bp_type); + ret += fprintf(fp, " bp_addr %#"PRIx64"\n", (uint64_t)attr->bp_addr); + ret += fprintf(fp, " config1 %#"PRIx64"\n", (uint64_t)attr->config1); + ret += fprintf(fp, " bp_len %"PRIu64"\n", (uint64_t)attr->bp_len); + ret += fprintf(fp, " config2 %#"PRIx64"\n", (uint64_t)attr->config2); + ret += fprintf(fp, " branch_sample_type %#"PRIx64"\n", (uint64_t)attr->branch_sample_type); + ret += fprintf(fp, " sample_regs_user %#"PRIx64"\n", (uint64_t)attr->sample_regs_user); + ret += fprintf(fp, " sample_stack_user %u\n", attr->sample_stack_user); + ret += fprintf(fp, "------------------------------------------------------------\n"); + + return ret; +} + static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, struct thread_map *threads) { @@ -840,6 +893,9 @@ retry_sample_id: if (perf_missing_features.sample_id_all) evsel->attr.sample_id_all = 0; + if (verbose >= 2) + perf_event_attr__fprintf(&evsel->attr, stderr); + for (cpu = 0; cpu < cpus->nr; cpu++) { for (thread = 0; thread < threads->nr; thread++) { @@ -850,6 +906,8 @@ 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], diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 925e0c3..381f4fd 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -8,6 +8,26 @@ #include "cpumap.h" #include "thread_map.h" +/* + * Support debug printing even though util/debug.c is not linked. That means + * implementing 'verbose' and 'eprintf'. + */ +int verbose; + +int eprintf(int level, const char *fmt, ...) +{ + va_list args; + int ret = 0; + + if (verbose >= level) { + va_start(args, fmt); + ret = vfprintf(stderr, fmt, args); + va_end(args); + } + + return ret; +} + /* Define PyVarObject_HEAD_INIT for python 2.5 */ #ifndef PyVarObject_HEAD_INIT # define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size, -- 1.7.11.7