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Message-ID: <20110115152410.GA12751@elte.hu>
Date: Sat, 15 Jan 2011 16:24:10 +0100
From: Ingo Molnar <mingo@...e.hu>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Frédéric Weisbecker <fweisbec@...il.com>,
Steven Rostedt <rostedt@...dmis.org>,
Thomas Gleixner <tglx@...utronix.de>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] perf fixes
Linus,
Please pull the latest perf-fixes-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git perf-fixes-for-linus
Thanks,
Ingo
------------------>
Arnaldo Carvalho de Melo (3):
perf evsel: Fix order of event list deletion
perf top: Fix annotate segv
Revert "perf tools: Emit clearer message for sys_perf_event_open ENOENT return"
Kirill Smelkov (1):
perf record: Add "nodelay" mode, disabled by default
Lai Jiangshan (1):
tracing: Remove syscall_exit_fields
Stephane Eranian (1):
perf sched: Fix list of events, dropping unsupported ':r' modifier
Steven Rostedt (1):
tracing: Only process module tracepoints once
include/trace/events/module.h | 10 +++++++++
kernel/trace/trace_syscalls.c | 33 ++++++++++-------------------
tools/perf/Documentation/perf-record.txt | 3 ++
tools/perf/builtin-record.c | 12 ++++++++--
tools/perf/builtin-sched.c | 18 ++++++++--------
tools/perf/builtin-stat.c | 1 +
tools/perf/builtin-top.c | 5 ++-
tools/perf/perf.c | 2 -
8 files changed, 47 insertions(+), 37 deletions(-)
diff --git a/include/trace/events/module.h b/include/trace/events/module.h
index c7bb2f0..c6bae36 100644
--- a/include/trace/events/module.h
+++ b/include/trace/events/module.h
@@ -1,5 +1,15 @@
+/*
+ * Because linux/module.h has tracepoints in the header, and ftrace.h
+ * eventually includes this file, define_trace.h includes linux/module.h
+ * But we do not want the module.h to override the TRACE_SYSTEM macro
+ * variable that define_trace.h is processing, so we only set it
+ * when module events are being processed, which would happen when
+ * CREATE_TRACE_POINTS is defined.
+ */
+#ifdef CREATE_TRACE_POINTS
#undef TRACE_SYSTEM
#define TRACE_SYSTEM module
+#endif
#if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_MODULE_H
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index bac752f..b706529 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -23,9 +23,6 @@ static int syscall_exit_register(struct ftrace_event_call *event,
static int syscall_enter_define_fields(struct ftrace_event_call *call);
static int syscall_exit_define_fields(struct ftrace_event_call *call);
-/* All syscall exit events have the same fields */
-static LIST_HEAD(syscall_exit_fields);
-
static struct list_head *
syscall_get_enter_fields(struct ftrace_event_call *call)
{
@@ -34,34 +31,28 @@ syscall_get_enter_fields(struct ftrace_event_call *call)
return &entry->enter_fields;
}
-static struct list_head *
-syscall_get_exit_fields(struct ftrace_event_call *call)
-{
- return &syscall_exit_fields;
-}
-
struct trace_event_functions enter_syscall_print_funcs = {
- .trace = print_syscall_enter,
+ .trace = print_syscall_enter,
};
struct trace_event_functions exit_syscall_print_funcs = {
- .trace = print_syscall_exit,
+ .trace = print_syscall_exit,
};
struct ftrace_event_class event_class_syscall_enter = {
- .system = "syscalls",
- .reg = syscall_enter_register,
- .define_fields = syscall_enter_define_fields,
- .get_fields = syscall_get_enter_fields,
- .raw_init = init_syscall_trace,
+ .system = "syscalls",
+ .reg = syscall_enter_register,
+ .define_fields = syscall_enter_define_fields,
+ .get_fields = syscall_get_enter_fields,
+ .raw_init = init_syscall_trace,
};
struct ftrace_event_class event_class_syscall_exit = {
- .system = "syscalls",
- .reg = syscall_exit_register,
- .define_fields = syscall_exit_define_fields,
- .get_fields = syscall_get_exit_fields,
- .raw_init = init_syscall_trace,
+ .system = "syscalls",
+ .reg = syscall_exit_register,
+ .define_fields = syscall_exit_define_fields,
+ .fields = LIST_HEAD_INIT(event_class_syscall_exit.fields),
+ .raw_init = init_syscall_trace,
};
extern unsigned long __start_syscalls_metadata[];
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index 52462ae..e032716 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -61,6 +61,9 @@ OPTIONS
-r::
--realtime=::
Collect data with this RT SCHED_FIFO priority.
+-D::
+--no-delay::
+ Collect data without buffering.
-A::
--append::
Append to the output file to do incremental profiling.
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 7069bd3..df6064a 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -49,6 +49,7 @@ static int pipe_output = 0;
static const char *output_name = "perf.data";
static int group = 0;
static int realtime_prio = 0;
+static bool nodelay = false;
static bool raw_samples = false;
static bool sample_id_all_avail = true;
static bool system_wide = false;
@@ -307,6 +308,11 @@ static void create_counter(struct perf_evsel *evsel, int cpu)
attr->sample_type |= PERF_SAMPLE_CPU;
}
+ if (nodelay) {
+ attr->watermark = 0;
+ attr->wakeup_events = 1;
+ }
+
attr->mmap = track;
attr->comm = track;
attr->inherit = !no_inherit;
@@ -331,9 +337,6 @@ try_again:
else if (err == ENODEV && cpu_list) {
die("No such device - did you specify"
" an out-of-range profile CPU?\n");
- } else if (err == ENOENT) {
- die("%s event is not supported. ",
- event_name(evsel));
} else if (err == EINVAL && sample_id_all_avail) {
/*
* Old kernel, no attr->sample_id_type_all field
@@ -480,6 +483,7 @@ static void atexit_header(void)
process_buildids();
perf_header__write(&session->header, output, true);
perf_session__delete(session);
+ perf_evsel_list__delete();
symbol__exit();
}
}
@@ -845,6 +849,8 @@ const struct option record_options[] = {
"record events on existing thread id"),
OPT_INTEGER('r', "realtime", &realtime_prio,
"collect data with this RT SCHED_FIFO priority"),
+ OPT_BOOLEAN('D', "no-delay", &nodelay,
+ "collect data without buffering"),
OPT_BOOLEAN('R', "raw-samples", &raw_samples,
"collect raw sample records from all opened counters"),
OPT_BOOLEAN('a', "all-cpus", &system_wide,
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index abd4b84..29e7ffd 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1843,15 +1843,15 @@ static const char *record_args[] = {
"-f",
"-m", "1024",
"-c", "1",
- "-e", "sched:sched_switch:r",
- "-e", "sched:sched_stat_wait:r",
- "-e", "sched:sched_stat_sleep:r",
- "-e", "sched:sched_stat_iowait:r",
- "-e", "sched:sched_stat_runtime:r",
- "-e", "sched:sched_process_exit:r",
- "-e", "sched:sched_process_fork:r",
- "-e", "sched:sched_wakeup:r",
- "-e", "sched:sched_migrate_task:r",
+ "-e", "sched:sched_switch",
+ "-e", "sched:sched_stat_wait",
+ "-e", "sched:sched_stat_sleep",
+ "-e", "sched:sched_stat_iowait",
+ "-e", "sched:sched_stat_runtime",
+ "-e", "sched:sched_process_exit",
+ "-e", "sched:sched_process_fork",
+ "-e", "sched:sched_wakeup",
+ "-e", "sched:sched_migrate_task",
};
static int __cmd_record(int argc, const char **argv)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index c385a63..0ff11d9 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -743,6 +743,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
out_free_fd:
list_for_each_entry(pos, &evsel_list, node)
perf_evsel__free_stat_priv(pos);
+ perf_evsel_list__delete();
out:
thread_map__delete(threads);
threads = NULL;
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 6ce4042..05344c6 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1247,8 +1247,6 @@ try_again:
die("Permission error - are you root?\n"
"\t Consider tweaking"
" /proc/sys/kernel/perf_event_paranoid.\n");
- if (err == ENOENT)
- die("%s event is not supported. ", event_name(evsel));
/*
* If it's cycles then fall back to hrtimer
* based cpu-clock-tick sw counter, which
@@ -1473,6 +1471,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
pos->attr.sample_period = default_interval;
}
+ sym_evsel = list_entry(evsel_list.next, struct perf_evsel, node);
+
symbol_conf.priv_size = (sizeof(struct sym_entry) +
(nr_counters + 1) * sizeof(unsigned long));
@@ -1490,6 +1490,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
out_free_fd:
list_for_each_entry(pos, &evsel_list, node)
perf_evsel__free_mmap(pos);
+ perf_evsel_list__delete();
return status;
}
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 5b1ecd6..595d0f4 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -286,8 +286,6 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
status = p->fn(argc, argv, prefix);
exit_browser(status);
- perf_evsel_list__delete();
-
if (status)
return status & 0xff;
--
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