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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/
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