From: Jiri Olsa <jolsa@redhat.com>
To: rostedt@goodmis.org, fweisbec@gmail.com, mingo@redhat.com,
paulus@samba.org, acme@ghostprotocols.net,
a.p.zijlstra@chello.nl
Cc: linux-kernel@vger.kernel.org, aarapov@redhat.com,
Jiri Olsa <jolsa@redhat.com>
Subject: [PATCH 5/7] ftrace, perf: Add support to use function tracepoint in perf
Date: Wed, 18 Jan 2012 19:44:33 +0100 [thread overview]
Message-ID: <1326912275-26405-6-git-send-email-jolsa@redhat.com> (raw)
In-Reply-To: <1326912275-26405-1-git-send-email-jolsa@redhat.com>
Adding perf registration support for the ftrace function event,
so it is now possible to register it via perf interface.
The perf_event struct statically contains ftrace_ops as a handle
for function tracer. The function tracer is registered/unregistered
in open/close actions.
To be efficient, we enable/disable ftrace_ops each time the traced
process is scheduled in/out (via TRACE_REG_PERF_(ADD|DELL) handlers).
This way tracing is enabled only when the process is running.
Intentionally using this way instead of the event's hw state
PERF_HES_STOPPED, which would not disable the ftrace_ops.
It is now possible to use function trace within perf commands
like:
perf record -e ftrace:function ls
perf stat -e ftrace:function ls
Allowed only for root.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
---
include/linux/perf_event.h | 3 +
kernel/trace/trace.h | 2 +
kernel/trace/trace_event_perf.c | 92 +++++++++++++++++++++++++++++++++++++++
kernel/trace/trace_export.c | 28 ++++++++++++
4 files changed, 125 insertions(+), 0 deletions(-)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 0b91db2..5003be6 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -858,6 +858,9 @@ struct perf_event {
#ifdef CONFIG_EVENT_TRACING
struct ftrace_event_call *tp_event;
struct event_filter *filter;
+#ifdef CONFIG_FUNCTION_TRACER
+ struct ftrace_ops ftrace_ops;
+#endif
#endif
#ifdef CONFIG_CGROUP_PERF
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 85732a8..e88e58a 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -591,6 +591,8 @@ static inline int ftrace_trace_task(struct task_struct *task)
static inline int ftrace_is_dead(void) { return 0; }
#endif
+int ftrace_event_is_function(struct ftrace_event_call *call);
+
/*
* struct trace_parser - servers for reading the user input separated by spaces
* @cont: set if the input is not complete - no final space char was found
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c
index d72af0b..57eb232 100644
--- a/kernel/trace/trace_event_perf.c
+++ b/kernel/trace/trace_event_perf.c
@@ -24,6 +24,11 @@ static int total_ref_count;
static int perf_trace_event_perm(struct ftrace_event_call *tp_event,
struct perf_event *p_event)
{
+ /* The ftrace function trace is allowed only for root. */
+ if (ftrace_event_is_function(tp_event) &&
+ perf_paranoid_kernel() && !capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
/* No tracing, just counting, so no obvious leak */
if (!(p_event->attr.sample_type & PERF_SAMPLE_RAW))
return 0;
@@ -250,3 +255,90 @@ __kprobes void *perf_trace_buf_prepare(int size, unsigned short type,
return raw_data;
}
EXPORT_SYMBOL_GPL(perf_trace_buf_prepare);
+
+
+static void
+perf_ftrace_function_call(unsigned long ip, unsigned long parent_ip)
+{
+ struct ftrace_entry *entry;
+ struct hlist_head *head;
+ struct pt_regs regs;
+ int rctx;
+
+#define ENTRY_SIZE (ALIGN(sizeof(struct ftrace_entry) + sizeof(u32), \
+ sizeof(u64)) - sizeof(u32))
+
+ BUILD_BUG_ON(ENTRY_SIZE > PERF_MAX_TRACE_SIZE);
+
+ perf_fetch_caller_regs(®s);
+
+ entry = perf_trace_buf_prepare(ENTRY_SIZE, TRACE_FN, NULL, &rctx);
+ if (!entry)
+ return;
+
+ entry->ip = ip;
+ entry->parent_ip = parent_ip;
+
+ head = this_cpu_ptr(event_function.perf_events);
+ perf_trace_buf_submit(entry, ENTRY_SIZE, rctx, 0,
+ 1, ®s, head);
+
+#undef ENTRY_SIZE
+}
+
+static int perf_ftrace_function_register(struct perf_event *event)
+{
+ struct ftrace_ops *ops = &event->ftrace_ops;
+
+ ops->flags |= FTRACE_OPS_FL_CONTROL;
+ ops->func = perf_ftrace_function_call;
+ return register_ftrace_function(ops);
+}
+
+static int perf_ftrace_function_unregister(struct perf_event *event)
+{
+ struct ftrace_ops *ops = &event->ftrace_ops;
+ return unregister_ftrace_function(ops);
+}
+
+static void perf_ftrace_function_enable(struct perf_event *event)
+{
+ struct ftrace_ops *ops = &event->ftrace_ops;
+ ftrace_function_enable(ops, smp_processor_id());
+}
+
+static void perf_ftrace_function_disable(struct perf_event *event)
+{
+ struct ftrace_ops *ops = &event->ftrace_ops;
+ ftrace_function_disable(ops, smp_processor_id());
+}
+
+int perf_ftrace_event_register(struct ftrace_event_call *call,
+ enum trace_reg type, void *data)
+{
+ int etype = call->event.type;
+
+ if (etype != TRACE_FN)
+ return -EINVAL;
+
+ switch (type) {
+ case TRACE_REG_REGISTER:
+ case TRACE_REG_UNREGISTER:
+ break;
+ case TRACE_REG_PERF_REGISTER:
+ case TRACE_REG_PERF_UNREGISTER:
+ return 0;
+ case TRACE_REG_PERF_OPEN:
+ return perf_ftrace_function_register(data);
+ case TRACE_REG_PERF_CLOSE:
+ return perf_ftrace_function_unregister(data);
+ case TRACE_REG_PERF_ADD:
+ perf_ftrace_function_enable(data);
+ return 0;
+ case TRACE_REG_PERF_DEL:
+ perf_ftrace_function_disable(data);
+ return 0;
+ }
+
+ return -EINVAL;
+}
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index bbeec31..867653c 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -131,6 +131,28 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
#include "trace_entries.h"
+static int ftrace_event_class_register(struct ftrace_event_call *call,
+ enum trace_reg type, void *data)
+{
+ switch (type) {
+ case TRACE_REG_PERF_REGISTER:
+ case TRACE_REG_PERF_UNREGISTER:
+ return 0;
+ case TRACE_REG_PERF_OPEN:
+ case TRACE_REG_PERF_CLOSE:
+ case TRACE_REG_PERF_ADD:
+ case TRACE_REG_PERF_DEL:
+#ifdef CONFIG_PERF_EVENTS
+ return perf_ftrace_event_register(call, type, data);
+#endif
+ case TRACE_REG_REGISTER:
+ case TRACE_REG_UNREGISTER:
+ break;
+ }
+
+ return -EINVAL;
+}
+
#undef __entry
#define __entry REC
@@ -159,6 +181,7 @@ struct ftrace_event_class event_class_ftrace_##call = { \
.system = __stringify(TRACE_SYSTEM), \
.define_fields = ftrace_define_fields_##call, \
.fields = LIST_HEAD_INIT(event_class_ftrace_##call.fields),\
+ .reg = ftrace_event_class_register, \
}; \
\
struct ftrace_event_call __used event_##call = { \
@@ -170,4 +193,9 @@ struct ftrace_event_call __used event_##call = { \
struct ftrace_event_call __used \
__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call;
+int ftrace_event_is_function(struct ftrace_event_call *call)
+{
+ return call == &event_function;
+}
+
#include "trace_entries.h"
--
1.7.1
next prev parent reply other threads:[~2012-01-18 18:45 UTC|newest]
Thread overview: 187+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-27 18:04 [RFC] ftrace, perf: Adding support to use function trace Jiri Olsa
2011-11-27 18:04 ` [PATCH 1/9] trace: Fix uninitialized variable compiler warning Jiri Olsa
2011-11-28 16:19 ` Steven Rostedt
2011-11-28 16:25 ` Jiri Olsa
2011-11-28 19:34 ` Steven Rostedt
2011-11-27 18:04 ` [PATCH 2/9] ftrace: Fix possible NULL dereferencing in __ftrace_hash_rec_update Jiri Olsa
2011-11-28 16:24 ` Steven Rostedt
2011-11-27 18:04 ` [PATCH 3/9] ftrace: Fix shutdown to disable calls properly Jiri Olsa
2011-11-28 19:18 ` Steven Rostedt
2011-11-29 11:21 ` Jiri Olsa
2011-11-27 18:04 ` [PATCH 4/9] ftrace: Add enable/disable ftrace_ops control interface Jiri Olsa
2011-11-28 19:26 ` Steven Rostedt
2011-11-28 20:02 ` Peter Zijlstra
2011-11-28 20:05 ` Peter Zijlstra
2011-11-28 20:14 ` Steven Rostedt
2011-11-28 20:20 ` Peter Zijlstra
2011-11-28 20:12 ` Steven Rostedt
2011-11-28 20:15 ` Peter Zijlstra
2011-11-28 20:24 ` Steven Rostedt
2011-11-28 20:21 ` Steven Rostedt
2011-11-29 10:07 ` Jiri Olsa
2011-11-27 18:04 ` [PATCH 5/9] ftrace, perf: Add open/close tracepoint perf registration actions Jiri Olsa
2011-11-27 18:04 ` [PATCH 6/9] ftrace, perf: Add add/del " Jiri Olsa
2011-11-27 18:04 ` [PATCH 7/9] ftrace, perf: Add support to use function tracepoint in perf Jiri Olsa
2011-11-28 19:58 ` Steven Rostedt
2011-11-28 20:03 ` Peter Zijlstra
2011-11-28 20:13 ` Steven Rostedt
2011-11-29 10:10 ` Jiri Olsa
2011-11-28 20:08 ` Peter Zijlstra
2011-11-28 20:10 ` Peter Zijlstra
2011-11-28 20:16 ` Steven Rostedt
2011-11-28 20:18 ` Peter Zijlstra
2011-11-27 18:04 ` [PATCH 8/9] ftrace, perf: Add FILTER_TRACE_FN event field type Jiri Olsa
2011-11-28 20:01 ` Steven Rostedt
2011-11-29 10:14 ` Jiri Olsa
2011-11-29 11:22 ` Jiri Olsa
2011-11-29 11:51 ` Peter Zijlstra
2011-11-29 12:21 ` Jiri Olsa
2011-11-27 18:04 ` [PATCH 9/9] ftrace, perf: Add filter support for function trace event Jiri Olsa
2011-11-28 20:07 ` Steven Rostedt
2011-12-05 17:22 ` [RFCv2] ftrace, perf: Adding support to use function trace Jiri Olsa
2011-12-05 17:22 ` [PATCHv2 01/10] ftrace: Fix possible NULL dereferencing in __ftrace_hash_rec_update Jiri Olsa
2011-12-05 17:22 ` [PATCHv2 02/10] ftrace: Change mcount call replacement logic Jiri Olsa
2011-12-19 19:03 ` Steven Rostedt
2011-12-20 13:10 ` Jiri Olsa
2011-12-20 16:33 ` Steven Rostedt
2011-12-20 19:39 ` Steven Rostedt
2011-12-21 9:57 ` Jiri Olsa
2011-12-21 11:34 ` Steven Rostedt
2011-12-21 11:35 ` Steven Rostedt
2011-12-21 11:40 ` Jiri Olsa
2012-01-08 9:13 ` [tip:perf/core] ftrace: Fix unregister ftrace_ops accounting tip-bot for Jiri Olsa
2011-12-05 17:22 ` [PATCHv2 03/10] ftrace: Add enable/disable ftrace_ops control interface Jiri Olsa
2011-12-19 19:19 ` Steven Rostedt
2011-12-19 19:35 ` Steven Rostedt
2011-12-20 14:57 ` Jiri Olsa
2011-12-20 15:25 ` Steven Rostedt
2011-12-20 15:35 ` Jiri Olsa
2011-12-05 17:22 ` [PATCHv2 04/10] ftrace, perf: Add open/close tracepoint perf registration actions Jiri Olsa
2011-12-05 17:22 ` [PATCHv2 05/10] ftrace, perf: Add add/del " Jiri Olsa
2011-12-05 17:22 ` [PATCHv2 06/10] ftrace, perf: Add support to use function tracepoint in perf Jiri Olsa
2011-12-05 17:22 ` [PATCHv2 07/10] ftrace: Change filter/notrace set functions to return exit code Jiri Olsa
2011-12-19 19:22 ` Steven Rostedt
2011-12-05 17:22 ` [PATCHv2 08/10] ftrace, perf: Distinguish ftrace function event field type Jiri Olsa
2011-12-05 17:22 ` [PATCHv2 09/10] ftrace, perf: Add filter support for function trace event Jiri Olsa
2011-12-05 17:22 ` [PATCHv2 10/10] ftrace, graph: Add global_ops filter callback for graph tracing Jiri Olsa
2011-12-19 19:27 ` Steven Rostedt
2011-12-19 13:40 ` [RFCv2] ftrace, perf: Adding support to use function trace Jiri Olsa
2011-12-19 16:45 ` Steven Rostedt
2011-12-19 16:58 ` Frederic Weisbecker
2011-12-21 11:48 ` [PATCHv3 0/8] " Jiri Olsa
2011-12-21 11:48 ` [PATCH 1/8] ftrace: Change filter/notrace set functions to return exit code Jiri Olsa
2011-12-21 11:48 ` [PATCH 2/8] ftrace: Fix possible NULL dereferencing in __ftrace_hash_rec_update Jiri Olsa
2011-12-21 15:23 ` Steven Rostedt
2011-12-21 11:48 ` [PATCH 3/8] ftrace: Add enable/disable ftrace_ops control interface Jiri Olsa
2011-12-21 16:01 ` Steven Rostedt
2011-12-21 16:43 ` Jiri Olsa
2011-12-21 16:55 ` Steven Rostedt
2012-01-24 1:26 ` Frederic Weisbecker
2011-12-21 11:48 ` [PATCH 4/8] ftrace, perf: Add open/close tracepoint perf registration actions Jiri Olsa
2011-12-21 11:48 ` [PATCH 5/8] ftrace, perf: Add add/del " Jiri Olsa
2011-12-21 11:48 ` [PATCH 6/8] ftrace, perf: Add support to use function tracepoint in perf Jiri Olsa
2011-12-21 11:48 ` [PATCH 7/8] ftrace, perf: Distinguish ftrace function event field type Jiri Olsa
2011-12-21 11:48 ` [PATCH 8/8] ftrace, perf: Add filter support for function trace event Jiri Olsa
2011-12-21 18:56 ` [PATCHv4 0/8] ftrace, perf: Adding support to use function trace Jiri Olsa
2011-12-21 18:56 ` [PATCH 1/7] ftrace: Change filter/notrace set functions to return exit code Jiri Olsa
2011-12-22 0:12 ` Steven Rostedt
2011-12-22 8:01 ` [PATCHv5 " Jiri Olsa
2011-12-21 18:56 ` [PATCH 2/7] ftrace: Add enable/disable ftrace_ops control interface Jiri Olsa
2011-12-21 18:56 ` [PATCH 3/7] ftrace, perf: Add open/close tracepoint perf registration actions Jiri Olsa
2011-12-21 18:56 ` [PATCH 4/7] ftrace, perf: Add add/del " Jiri Olsa
2011-12-21 18:56 ` [PATCH 5/7] ftrace, perf: Add support to use function tracepoint in perf Jiri Olsa
2011-12-21 18:56 ` [PATCH 6/7] ftrace, perf: Distinguish ftrace function event field type Jiri Olsa
2011-12-21 18:56 ` [PATCH 7/7] ftrace, perf: Add filter support for function trace event Jiri Olsa
2011-12-21 22:07 ` Frederic Weisbecker
2011-12-22 12:55 ` Jiri Olsa
2011-12-22 15:26 ` [PATCHvFIXED " Jiri Olsa
2011-12-24 2:35 ` Frederic Weisbecker
2011-12-21 19:02 ` [PATCHv4 0/7] ftrace, perf: Adding support to use function trace Jiri Olsa
2012-01-02 9:04 ` [PATCHv5 " Jiri Olsa
2012-01-02 9:04 ` [PATCH 1/7] ftrace: Change filter/notrace set functions to return exit code Jiri Olsa
2012-02-17 13:46 ` [tip:perf/core] ftrace: Change filter/ notrace " tip-bot for Jiri Olsa
2012-01-02 9:04 ` [PATCH 2/7] ftrace: Add enable/disable ftrace_ops control interface Jiri Olsa
2012-01-17 1:42 ` Frederic Weisbecker
2012-01-17 2:07 ` Steven Rostedt
2012-01-17 2:29 ` Frederic Weisbecker
2012-01-18 13:59 ` Jiri Olsa
2012-01-02 9:04 ` [PATCH 3/7] ftrace, perf: Add open/close tracepoint perf registration actions Jiri Olsa
2012-01-02 9:04 ` [PATCH 4/7] ftrace, perf: Add add/del " Jiri Olsa
2012-01-02 9:04 ` [PATCH 5/7] ftrace, perf: Add support to use function tracepoint in perf Jiri Olsa
2012-01-02 9:04 ` [PATCH 6/7] ftrace, perf: Distinguish ftrace function event field type Jiri Olsa
2012-01-02 9:04 ` [PATCH 7/7] ftrace, perf: Add filter support for function trace event Jiri Olsa
2012-01-16 23:59 ` Steven Rostedt
2012-01-18 13:45 ` Jiri Olsa
2012-01-16 8:57 ` [PATCHv5 0/7] ftrace, perf: Adding support to use function trace Jiri Olsa
2012-01-16 16:17 ` Steven Rostedt
2012-01-18 18:44 ` [PATCHv6 " Jiri Olsa
2012-01-18 18:44 ` [PATCH 1/7] ftrace: Change filter/notrace set functions to return exit code Jiri Olsa
2012-01-19 16:31 ` Frederic Weisbecker
2012-01-18 18:44 ` [PATCH 2/7] ftrace: Add enable/disable ftrace_ops control interface Jiri Olsa
2012-01-20 17:02 ` Frederic Weisbecker
2012-01-25 23:13 ` Steven Rostedt
2012-01-26 2:37 ` Frederic Weisbecker
2012-01-27 10:37 ` Jiri Olsa
2012-01-27 10:38 ` Jiri Olsa
2012-01-27 16:40 ` Frederic Weisbecker
2012-01-27 16:54 ` Jiri Olsa
2012-01-27 17:02 ` Frederic Weisbecker
2012-01-27 17:20 ` Jiri Olsa
2012-01-28 16:39 ` Frederic Weisbecker
2012-01-27 17:21 ` Steven Rostedt
2012-01-18 18:44 ` [PATCH 3/7] ftrace, perf: Add open/close tracepoint perf registration actions Jiri Olsa
2012-01-18 18:44 ` [PATCH 4/7] ftrace, perf: Add add/del " Jiri Olsa
2012-01-18 18:44 ` Jiri Olsa [this message]
2012-01-18 18:44 ` [PATCH 6/7] ftrace, perf: Distinguish ftrace function event field type Jiri Olsa
2012-01-18 18:44 ` [PATCH 7/7] ftrace, perf: Add filter support for function trace event Jiri Olsa
2012-01-18 21:43 ` [PATCHv6 0/7] ftrace, perf: Adding support to use function trace Steven Rostedt
2012-01-28 18:43 ` [PATCHv7 " Jiri Olsa
2012-01-28 18:43 ` [PATCH 1/7] ftrace: Change filter/notrace set functions to return exit code Jiri Olsa
2012-01-30 5:42 ` Frederic Weisbecker
2012-01-28 18:43 ` [PATCH 2/7] ftrace: Add enable/disable ftrace_ops control interface Jiri Olsa
2012-01-30 5:59 ` Frederic Weisbecker
2012-01-30 9:18 ` Jiri Olsa
2012-02-03 13:42 ` Steven Rostedt
2012-02-03 13:50 ` Jiri Olsa
2012-02-03 14:08 ` Steven Rostedt
2012-02-03 14:22 ` [PATCHv8 0/2] first 2 patches passed review Jiri Olsa
2012-02-03 14:22 ` [PATCH 1/2] ftrace: Change filter/notrace set functions to return exit code Jiri Olsa
2012-02-03 14:22 ` [PATCH 2/2] ftrace: Add enable/disable ftrace_ops control interface Jiri Olsa
2012-02-04 13:24 ` [PATCHv8 0/2] first 2 patches passed review Frederic Weisbecker
2012-02-03 13:40 ` [PATCH 2/7] ftrace: Add enable/disable ftrace_ops control interface Steven Rostedt
2012-01-28 18:43 ` [PATCH 3/7] ftrace, perf: Add open/close tracepoint perf registration actions Jiri Olsa
2012-02-02 17:35 ` Frederic Weisbecker
2012-02-03 10:23 ` Jiri Olsa
2012-01-28 18:43 ` [PATCH 4/7] ftrace, perf: Add add/del " Jiri Olsa
2012-02-02 17:42 ` Frederic Weisbecker
2012-01-28 18:43 ` [PATCH 5/7] ftrace, perf: Add support to use function tracepoint in perf Jiri Olsa
2012-02-02 18:14 ` Frederic Weisbecker
2012-02-03 12:54 ` Jiri Olsa
2012-02-03 13:00 ` Jiri Olsa
2012-02-03 14:07 ` Steven Rostedt
2012-02-04 13:21 ` Frederic Weisbecker
2012-02-06 19:35 ` Steven Rostedt
2012-02-03 13:53 ` Steven Rostedt
2012-01-28 18:43 ` [PATCH 6/7] ftrace, perf: Distinguish ftrace function event field type Jiri Olsa
2012-02-03 14:16 ` Steven Rostedt
2012-01-28 18:43 ` [PATCH 7/7] ftrace, perf: Add filter support for function trace event Jiri Olsa
2012-02-07 0:20 ` Jiri Olsa
2012-02-07 19:44 ` [PATCHv8 0/8] ftrace, perf: Adding support to use function trace Jiri Olsa
2012-02-07 19:44 ` [PATCH 1/8] ftrace: Change filter/notrace set functions to return exit code Jiri Olsa
2012-02-07 19:44 ` [PATCH 2/8] ftrace: Add enable/disable ftrace_ops control interface Jiri Olsa
2012-02-07 19:44 ` [PATCH 3/8] ftrace, perf: Add open/close tracepoint perf registration actions Jiri Olsa
2012-02-07 19:44 ` [PATCH 4/8] ftrace, perf: Add add/del " Jiri Olsa
2012-02-07 19:44 ` [PATCH 5/8] ftrace: Add FTRACE_ENTRY_REG macro to allow event registration Jiri Olsa
2012-02-07 19:44 ` [PATCH 6/8] ftrace, perf: Add support to use function tracepoint in perf Jiri Olsa
2012-02-07 19:44 ` [PATCH 7/8] ftrace: Allow to specify filter field type for ftrace events Jiri Olsa
2012-02-07 19:44 ` [PATCH 8/8] ftrace, perf: Add filter support for function trace event Jiri Olsa
2012-02-10 13:27 ` [PATCHv8 0/8] ftrace, perf: Adding support to use function trace Steven Rostedt
2012-02-10 14:45 ` Steven Rostedt
2012-02-10 16:07 ` Jiri Olsa
2012-02-10 16:48 ` Frederic Weisbecker
2012-02-10 18:00 ` Steven Rostedt
2012-02-10 18:05 ` Frederic Weisbecker
2012-02-10 18:23 ` David Ahern
2012-02-13 18:02 ` Steven Rostedt
2012-02-15 14:51 [PATCHv9 0/7] " Jiri Olsa
2012-02-15 14:51 ` [PATCH 5/7] ftrace, perf: Add support to use function tracepoint in perf Jiri Olsa
2012-02-15 16:03 ` Frederic Weisbecker
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1326912275-26405-6-git-send-email-jolsa@redhat.com \
--to=jolsa@redhat.com \
--cc=a.p.zijlstra@chello.nl \
--cc=aarapov@redhat.com \
--cc=acme@ghostprotocols.net \
--cc=fweisbec@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=paulus@samba.org \
--cc=rostedt@goodmis.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).