diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2014-07-11 16:49:54 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-08-12 19:03:01 +0400 |
| commit | cee3ab9caa7ae5ee81027e60c0109063664d9217 (patch) | |
| tree | e80609d146065911272a056c6dc126cbc7dd6a13 /tools/perf/util/ordered-events.c | |
| parent | 94786b67b5f4577c16486e8eb10ff045e59f80ef (diff) | |
| download | linux-cee3ab9caa7ae5ee81027e60c0109063664d9217.tar.xz | |
perf tools: Add debug prints for ordered events queue
Adding some prints for ordered events queue, to help debug issues.
Adding debug_ordered_events debug variable to be able to enable ordered
events debug messages using:
$ perf --debug ordered-events=2 report ...
Also using oe pointer in perf_session__queue_event instead of chained
session variable dereferencing.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-7p3mnnopjvsp9nmk9msqcfkm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/ordered-events.c')
| -rw-r--r-- | tools/perf/util/ordered-events.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c index 381d5fea1131..8a8aeab8e7ec 100644 --- a/tools/perf/util/ordered-events.c +++ b/tools/perf/util/ordered-events.c @@ -1,10 +1,16 @@ #include <linux/list.h> +#include <linux/compiler.h> #include "ordered-events.h" #include "evlist.h" #include "session.h" #include "asm/bug.h" #include "debug.h" +#define pr_N(n, fmt, ...) \ + eprintf(n, debug_ordered_events, fmt, ##__VA_ARGS__) + +#define pr(fmt, ...) pr_N(1, pr_fmt(fmt), ##__VA_ARGS__) + static void queue_event(struct ordered_events *oe, struct ordered_event *new) { struct ordered_event *last = oe->last; @@ -14,6 +20,8 @@ static void queue_event(struct ordered_events *oe, struct ordered_event *new) ++oe->nr_events; oe->last = new; + pr_oe_time2(timestamp, "queue_event nr_events %u\n", oe->nr_events); + if (!last) { list_add(&new->list, &oe->events); oe->max_timestamp = timestamp; @@ -69,12 +77,17 @@ static struct ordered_event *alloc_event(struct ordered_events *oe) if (!oe->buffer) return NULL; + pr("alloc size %" PRIu64 "B (+%zu), max %" PRIu64 "B\n", + oe->cur_alloc_size, size, oe->max_alloc_size); + oe->cur_alloc_size += size; list_add(&oe->buffer->list, &oe->to_free); /* First entry is abused to maintain the to_free list. */ oe->buffer_idx = 2; new = oe->buffer + 1; + } else { + pr("allocation limit reached %" PRIu64 "B\n", oe->max_alloc_size); } return new; @@ -155,6 +168,11 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, enum oe_flush how) { struct ordered_events *oe = &s->ordered_events; + static const char * const str[] = { + "FINAL", + "ROUND", + "HALF ", + }; int err; switch (how) { @@ -184,6 +202,10 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, break; }; + pr_oe_time(oe->next_flush, "next_flush - ordered_events__flush PRE %s, nr_events %u\n", + str[how], oe->nr_events); + pr_oe_time(oe->max_timestamp, "max_timestamp\n"); + err = __ordered_events__flush(s, tool); if (!err) { @@ -191,6 +213,10 @@ int ordered_events__flush(struct perf_session *s, struct perf_tool *tool, oe->next_flush = oe->max_timestamp; } + pr_oe_time(oe->next_flush, "next_flush - ordered_events__flush POST %s, nr_events %u\n", + str[how], oe->nr_events); + pr_oe_time(oe->last_flush, "last_flush\n"); + return err; } |