On Thu, Aug 16, 2012 at 12:23 PM, Michael Neuling mi...@neuling.org wrote:
Hi,
I've been trying to get hardware breakpoints with perf to work on POWER7
but I'm getting the following:
% perf record -e mem:0x1000 true
Error: sys_perf_event_open() syscall returned with 28 (No space
On Wed, Jul 18, 2012 at 5:22 PM, Srikar Dronamraju
sri...@linux.vnet.ibm.com wrote:
* Jovi Zhang bookj...@gmail.com [2012-07-18 11:08:42]:
From 68232ef2decae95b807f2f3763e8ea99c1a3b2ae Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Wed, 18 Jul 2012 17:51:26 +0800
Subject
On Wed, Jul 18, 2012 at 7:45 PM, Srikar Dronamraju
sri...@linux.vnet.ibm.com wrote:
* Jovi Zhang bookj...@gmail.com [2012-07-18 19:38:27]:
On Wed, Jul 18, 2012 at 7:07 PM, Srikar Dronamraju
sri...@linux.vnet.ibm.com wrote:
The patch looks good,
Can you modify the description a bit
From cb06e8f21d3875f4ffef46a7627dca88b2c74836 Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Sun, 15 Jul 2012 03:03:10 +0800
Subject: [PATCH] perf: make the breakpoint events sample period default to 1
There have one problem about hw_breakpoint perf event, as watched
From fe42b2f29e5968482b3129c71f81a58a0559cf04 Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Tue, 17 Jul 2012 17:10:15 +0800
Subject: [PATCH] ftrace: using pr_fmt for better printk output
There don't have subsystem name output in front ot ftrace related log entry,
so use
From 3abcb73682893ed2bde318d17f1cc3430bf70224 Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Tue, 17 Jul 2012 17:21:56 +0800
Subject: [PATCH] [TRIVIAL] perf: missing struct before structure name
when CONFIG_PERF_EVENTS disabled, there will have a compiliation error,
because
On Tue, Jul 17, 2012 at 12:25 PM, Steven Rostedt rost...@goodmis.org wrote:
On Mon, 2012-07-16 at 20:42 -0700, Joe Perches wrote:
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
[]
@@ -13,6 +13,8 @@
* Copyright (C) 2004 William Lee Irwin III
*/
+#define pr_fmt(fmt)
On Tue, Jul 17, 2012 at 1:07 PM, Joe Perches j...@perches.com wrote:
On Tue, 2012-07-17 at 00:25 -0400, Steven Rostedt wrote:
On Mon, 2012-07-16 at 20:42 -0700, Joe Perches wrote:
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
[]
@@ -13,6 +13,8 @@
* Copyright (C) 2004
From cea5f76c3ad9f42b85a1a71b75035fe96317187a Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Tue, 17 Jul 2012 22:43:11 +0800
Subject: [PATCH] ftrace: using pr_fmt for better printk output
There don't have subsystem name output in front ot ftrace related log entry,
so use
On Wed, Jul 18, 2012 at 1:27 AM, Srikar Dronamraju
sri...@linux.vnet.ibm.com wrote:
* Frederic Weisbecker fweis...@gmail.com [2012-07-17 12:59:39]:
On Tue, Jul 17, 2012 at 06:12:28PM +0800, Jovi Zhang wrote:
From 16ed13ee9098ae01705e8456005d1ad6d9909128 Mon Sep 17 00:00:00 2001
From: Jovi
From 68232ef2decae95b807f2f3763e8ea99c1a3b2ae Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Wed, 18 Jul 2012 17:51:26 +0800
Subject: [PATCH] uprobe: fix misleading log entry
There don't have any 'r' prefix in uprobe event naming, remove it.
Signed-off-by: Jovi Zhang bookj
cannot be valid targets for uprobe.
Hence verify if the target is a regular file during the probe
registration.
Thanks srikar, your description is more clear than mine.
From fd5077196038cc271e2116e1fca359a0011e1669 Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Wed, 18 Jul
On Wed, Jul 18, 2012 at 5:22 PM, Srikar Dronamraju
sri...@linux.vnet.ibm.com wrote:
* Jovi Zhang bookj...@gmail.com [2012-07-18 11:08:42]:
From 68232ef2decae95b807f2f3763e8ea99c1a3b2ae Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Wed, 18 Jul 2012 17:51:26 +0800
Subject
On Wed, Mar 13, 2013 at 6:41 PM, zhangwei(Jovi)
jovi.zhang...@huawei.com wrote:
[change from v1: add missed type assignment in ftrace_event_register]
Currently event tracing only can be use for ftrace and perf,
there don't have any mechanism to let modules(like external tracing tool)
register
On Mon, Mar 11, 2013 at 10:08 PM, Steven Rostedt rost...@goodmis.org wrote:
On Mon, 2013-03-11 at 15:13 +0800, zhangwei(Jovi) wrote:
It's reasonable to call __ftrace_dump function not only once,
so remove the dump_ran variable checking.
This needs a little more work. On an oops, I only want
On Mon, Mar 11, 2013 at 11:36 PM, Steven Rostedt rost...@goodmis.org wrote:
On Mon, 2013-03-11 at 15:24 +, James Bottomley wrote:
In the future, send them as a separate patch series. There's no
dependencies on these patches with the rest of the series. They should
have been sent
On Mon, Mar 11, 2013 at 10:46 PM, Jason Wessel
jason.wes...@windriver.com wrote:
On 03/11/2013 09:09 AM, Steven Rostedt wrote:
This is Jason's code.
Jason, please give an Ack or Nack.
Thanks,
-- Steve
On Mon, 2013-03-11 at 15:13 +0800, zhangwei(Jovi) wrote:
trace_empty is checking in
From ac499cd340bf2ba47b3d1dd129a3bb7527c195ae Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Fri, 25 Jan 2013 18:03:07 +0800
Subject: [PATCH] tracing: fix twice trace iterator init
trace iterator is already inited in trace_init_global_iter,
so there don't need to assign again
will try to get rid it sooner.)
For any question, please contact the author, Jovi Zhang.
ktap is a open source project, welcome hacking and contributing.
.jovi
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo
On Fri, Jan 18, 2013 at 11:35 AM, Frank Ch. Eigler f...@redhat.com wrote:
Hi -
On Fri, Jan 18, 2013 at 09:24:55AM +0800, Jovi Zhang wrote:
Let us continue this ktap topic in this thread :).
ktap code is public available at github, please clone from:
https://github.com/ktap/ktap.git
From 3dc19ea2b535719d0b4177f17bbbff9cbf257b23 Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Wed, 22 Aug 2012 10:34:08 +0800
Subject: [PATCH] MIPS/mm: add compound tail page _mapcount when mapped
see commit b6999b191 which target for x86 mm/gup, let it align with
mips
From 152373a6262045d19023cf45de84ad3c69316a45 Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Mon, 20 Aug 2012 14:20:01 +0800
Subject: [PATCH] pstore: add missed platform_device_unregister
we need unregister platform device when module exit, add it.
Signed-off-by: Jovi Zhang
Hi Andrew,
Is that attached patch ok to go through your -mm tree? this patch
reviewed many months ago, but still not goto mainstream. :)
that comments is quite mismatch with the code.
Thanks.
.jovi
0001-coredump-fix-wrong-comments-on-core-limits-of-pipe-c.patch
Description: Binary data
From bfc2eb1ac844b6d5f64e36eb01464a1cfba39663 Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Wed, 11 Jul 2012 04:32:15 +0800
Subject: [PATCH] perf: fix perf-report display ip string incorrectly
This patch fix perf ui browser cannot display ip string correctly
when using perf
From 4b363bf16c12b76788fbace1475123b7214ae58d Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Wed, 11 Jul 2012 16:53:57 +0800
Subject: [PATCH] perf: fix perf-lock report coredump
Check sample type event raw_data is existed in perf.data firstly,
then invoke process_raw_event
On Wed, Jul 11, 2012 at 10:20 AM, David Ahern dsah...@gmail.com wrote:
On 7/10/12 7:06 PM, Jovi Zhang wrote:
From 4b363bf16c12b76788fbace1475123b7214ae58d Mon Sep 17 00:00:00 2001
From: Jovi Zhang bookj...@gmail.com
Date: Wed, 11 Jul 2012 16:53:57 +0800
Subject: [PATCH] perf: fix perf-lock
On Tue, Jan 1, 2013 at 2:58 AM, Frank Ch. Eigler f...@redhat.com wrote:
bookjovi wrote:
[...] This mail is RFC for discuss on a new dynamic tracing tool, I
name it ktap. (only experimental project now)
Welcome to the problem domain!
Thanks very much, frank, I'm so luck to discussing this
On Fri, Jan 11, 2013 at 10:19 PM, Michel Dagenais
michel.dagen...@polymtl.ca wrote:
You may be interested in KGTP which implements a simple bytecode interpreter
in the kernel to accept GDB tracepoints http://code.google.com/p/kgtp/
The bytecode is quite limited but would be easy to extend.
On Sat, Jun 22, 2013 at 4:22 AM, Steven Rostedt rost...@goodmis.org wrote:
On Fri, 2013-06-21 at 14:53 +0800, zhangwei(Jovi) wrote:
On 2013/6/21 2:31, Tom Zanussi wrote:
Add support for SOFT_DISABLE to syscall events.
The original SOFT_DISABLE patches didn't add support for soft disable
On Tue, Jun 25, 2013 at 9:34 PM, Steven Rostedt rost...@goodmis.org wrote:
On Tue, 2013-06-25 at 18:37 +0800, zhangwei(Jovi) wrote:
On 2013/6/25 18:10, Masami Hiramatsu wrote:
(2013/06/25 17:15), zhangwei(Jovi) wrote:
There have no good reason to call free_trace_probe
every time when
On Sat, Jun 22, 2013 at 4:22 AM, Steven Rostedt wrote:
> On Fri, 2013-06-21 at 14:53 +0800, zhangwei(Jovi) wrote:
>> On 2013/6/21 2:31, Tom Zanussi wrote:
>> > Add support for SOFT_DISABLE to syscall events.
>> >
>> > The original SOFT_DISABLE patches didn't add support for soft disable
>> > of
On Tue, Jun 25, 2013 at 9:34 PM, Steven Rostedt wrote:
> On Tue, 2013-06-25 at 18:37 +0800, zhangwei(Jovi) wrote:
>> On 2013/6/25 18:10, Masami Hiramatsu wrote:
>> > (2013/06/25 17:15), zhangwei(Jovi) wrote:
>> >> There have no good reason to call free_trace_probe
>> >> every time when
On Wed, Mar 13, 2013 at 6:41 PM, zhangwei(Jovi)
wrote:
> [change from v1: add missed type assignment in ftrace_event_register]
>
> Currently event tracing only can be use for ftrace and perf,
> there don't have any mechanism to let modules(like external tracing tool)
> register callback tracing
On Mon, Mar 11, 2013 at 10:08 PM, Steven Rostedt wrote:
> On Mon, 2013-03-11 at 15:13 +0800, zhangwei(Jovi) wrote:
>> It's reasonable to call __ftrace_dump function not only once,
>> so remove the dump_ran variable checking.
>
> This needs a little more work. On an oops, I only want it dumped
On Mon, Mar 11, 2013 at 11:36 PM, Steven Rostedt wrote:
> On Mon, 2013-03-11 at 15:24 +, James Bottomley wrote:
>
>> > In the future, send them as a separate patch series. There's no
>> > dependencies on these patches with the rest of the series. They should
>> > have been sent directly to
On Mon, Mar 11, 2013 at 10:46 PM, Jason Wessel
wrote:
> On 03/11/2013 09:09 AM, Steven Rostedt wrote:
>> This is Jason's code.
>>
>> Jason, please give an Ack or Nack.
>>
>> Thanks,
>>
>> -- Steve
>>
>>
>> On Mon, 2013-03-11 at 15:13 +0800, zhangwei(Jovi) wrote:
>>> trace_empty is checking in
On Wed, Jul 18, 2012 at 5:22 PM, Srikar Dronamraju
wrote:
> * Jovi Zhang [2012-07-18 11:08:42]:
>
>> From 68232ef2decae95b807f2f3763e8ea99c1a3b2ae Mon Sep 17 00:00:00 2001
>> From: Jovi Zhang
>> Date: Wed, 18 Jul 2012 17:51:26 +0800
>> Subject: [PATCH] up
On Wed, Jul 18, 2012 at 7:45 PM, Srikar Dronamraju
wrote:
> * Jovi Zhang [2012-07-18 19:38:27]:
>
>> On Wed, Jul 18, 2012 at 7:07 PM, Srikar Dronamraju
>> wrote:
>> > The patch looks good,
>> >
>> > Can you modify the description a bit. However you
>From ac499cd340bf2ba47b3d1dd129a3bb7527c195ae Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Fri, 25 Jan 2013 18:03:07 +0800
Subject: [PATCH] tracing: fix twice trace iterator init
trace iterator is already inited in trace_init_global_iter,
so there don't need to assign again.
Signed-
Hi Andrew,
Is that attached patch ok to go through your -mm tree? this patch
reviewed many months ago, but still not goto mainstream. :)
that comments is quite mismatch with the code.
Thanks.
.jovi
0001-coredump-fix-wrong-comments-on-core-limits-of-pipe-c.patch
Description: Binary data
>From bfc2eb1ac844b6d5f64e36eb01464a1cfba39663 Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Wed, 11 Jul 2012 04:32:15 +0800
Subject: [PATCH] perf: fix perf-report display ip string incorrectly
This patch fix perf ui browser cannot display ip string correctly
when using perf-report.
&q
>From 4b363bf16c12b76788fbace1475123b7214ae58d Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Wed, 11 Jul 2012 16:53:57 +0800
Subject: [PATCH] perf: fix perf-lock report coredump
Check sample type event raw_data is existed in perf.data firstly,
then invoke process_raw_event, otherw
On Wed, Jul 11, 2012 at 10:20 AM, David Ahern wrote:
> On 7/10/12 7:06 PM, Jovi Zhang wrote:
>>
>> From 4b363bf16c12b76788fbace1475123b7214ae58d Mon Sep 17 00:00:00 2001
>> From: Jovi Zhang
>> Date: Wed, 11 Jul 2012 16:53:57 +0800
>> Subject: [PATCH] pe
On Thu, Aug 16, 2012 at 12:23 PM, Michael Neuling wrote:
> Hi,
>
> I've been trying to get hardware breakpoints with perf to work on POWER7
> but I'm getting the following:
>
> % perf record -e mem:0x1000 true
>
> Error: sys_perf_event_open() syscall returned with 28 (No space left on
On Wed, Jul 18, 2012 at 1:27 AM, Srikar Dronamraju
wrote:
> * Frederic Weisbecker [2012-07-17 12:59:39]:
>
>> On Tue, Jul 17, 2012 at 06:12:28PM +0800, Jovi Zhang wrote:
>> > From 16ed13ee9098ae01705e8456005d1ad6d9909128 Mon Sep 17 00:00:00 2001
>> > From: Jovi Zhan
>From 68232ef2decae95b807f2f3763e8ea99c1a3b2ae Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Wed, 18 Jul 2012 17:51:26 +0800
Subject: [PATCH] uprobe: fix misleading log entry
There don't have any 'r' prefix in uprobe event naming, remove it.
Signed-off-by: Jovi Zhang
---
kernel/tr
el/debug/tracing/uprobe_events
>
> However directories cannot be valid targets for uprobe.
> Hence verify if the target is a regular file during the probe
> registration.
Thanks srikar, your description is more clear than mine.
>From fd5077196038cc271e2116e1fca359a0011e1669 Mon Sep 17
On Wed, Jul 18, 2012 at 5:22 PM, Srikar Dronamraju
wrote:
> * Jovi Zhang [2012-07-18 11:08:42]:
>
>> From 68232ef2decae95b807f2f3763e8ea99c1a3b2ae Mon Sep 17 00:00:00 2001
>> From: Jovi Zhang
>> Date: Wed, 18 Jul 2012 17:51:26 +0800
>> Subject: [PATCH] up
>From 3dc19ea2b535719d0b4177f17bbbff9cbf257b23 Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Wed, 22 Aug 2012 10:34:08 +0800
Subject: [PATCH] MIPS/mm: add compound tail page _mapcount when mapped
see commit b6999b191 which target for x86 mm/gup, let it align with
mips architecture.
Quote f
>From cb06e8f21d3875f4ffef46a7627dca88b2c74836 Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Sun, 15 Jul 2012 03:03:10 +0800
Subject: [PATCH] perf: make the breakpoint events sample period default to 1
There have one problem about hw_breakpoint perf event, as watched,
the events repor
>From fe42b2f29e5968482b3129c71f81a58a0559cf04 Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Tue, 17 Jul 2012 17:10:15 +0800
Subject: [PATCH] ftrace: using pr_fmt for better printk output
There don't have subsystem name output in front ot ftrace related log entry,
so use pr_fmt to ena
>From 3abcb73682893ed2bde318d17f1cc3430bf70224 Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Tue, 17 Jul 2012 17:21:56 +0800
Subject: [PATCH] [TRIVIAL] perf: missing struct before structure name
when CONFIG_PERF_EVENTS disabled, there will have a compiliation error,
because missing str
On Tue, Jul 17, 2012 at 12:25 PM, Steven Rostedt wrote:
> On Mon, 2012-07-16 at 20:42 -0700, Joe Perches wrote:
>
>> > diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
>> []
>> > @@ -13,6 +13,8 @@
>> > * Copyright (C) 2004 William Lee Irwin III
>> > */
>> >
>> > +#define
On Tue, Jul 17, 2012 at 1:07 PM, Joe Perches wrote:
> On Tue, 2012-07-17 at 00:25 -0400, Steven Rostedt wrote:
>> On Mon, 2012-07-16 at 20:42 -0700, Joe Perches wrote:
>>
>> > > diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
>> > []
>> > > @@ -13,6 +13,8 @@
>> > > * Copyright (C)
>From cea5f76c3ad9f42b85a1a71b75035fe96317187a Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Tue, 17 Jul 2012 22:43:11 +0800
Subject: [PATCH] ftrace: using pr_fmt for better printk output
There don't have subsystem name output in front ot ftrace related log entry,
so use pr_fmt to ena
On Fri, Jan 11, 2013 at 10:19 PM, Michel Dagenais
wrote:
> You may be interested in KGTP which implements a simple bytecode interpreter
> in the kernel to accept GDB tracepoints http://code.google.com/p/kgtp/
>
> The bytecode is quite limited but would be easy to extend.
KGTP is still not meet my
On Tue, Jan 1, 2013 at 2:58 AM, Frank Ch. Eigler wrote:
>
> bookjovi wrote:
>
>
>> [...] This mail is RFC for discuss on a new dynamic tracing tool, I
>> name it ktap. (only experimental project now)
>
> Welcome to the problem domain!
Thanks very much, frank, I'm so luck to discussing this topic
mmit is just a initial pulbic code release, it have basic
tracepoint and syscall support, please waiting ktap release 1.0. :)
I suggest you put this ktap directory into linux/kernel/trace/.
(this initial code have one issue: it need to patch ftrace code in Linux kernel,
see ftrace.patch, I wi
On Fri, Jan 18, 2013 at 11:35 AM, Frank Ch. Eigler wrote:
> Hi -
>
> On Fri, Jan 18, 2013 at 09:24:55AM +0800, Jovi Zhang wrote:
>> Let us continue this ktap topic in this thread :).
>> ktap code is public available at github, please clone from:
>> https
>From 152373a6262045d19023cf45de84ad3c69316a45 Mon Sep 17 00:00:00 2001
From: Jovi Zhang
Date: Mon, 20 Aug 2012 14:20:01 +0800
Subject: [PATCH] pstore: add missed platform_device_unregister
we need unregister platform device when module exit, add it.
Signed-off-by: Jovi Zhang
---
fs/pst
Commit-ID: d24d7dbf3cc49b00a152e55e24f0eeb173c7a971
Gitweb: http://git.kernel.org/tip/d24d7dbf3cc49b00a152e55e24f0eeb173c7a971
Author: Jovi Zhang bookj...@gmail.com
AuthorDate: Wed, 18 Jul 2012 18:16:44 +0800
Committer: Steven Rostedt rost...@goodmis.org
CommitDate: Mon, 21 Jan 2013 13
Commit-ID: 4a841d650ea435c69e60675537f158a620697290
Gitweb: http://git.kernel.org/tip/4a841d650ea435c69e60675537f158a620697290
Author: Jovi Zhang bookj...@gmail.com
AuthorDate: Sun, 15 Jul 2012 03:03:10 +0800
Committer: Arnaldo Carvalho de Melo a...@redhat.com
CommitDate: Wed, 25 Jul
Commit-ID: 35d56ca9d401d9d0ac8d91e4db1485af5f38f6fd
Gitweb: http://git.kernel.org/tip/35d56ca9d401d9d0ac8d91e4db1485af5f38f6fd
Author: Jovi Zhang bookj...@gmail.com
AuthorDate: Tue, 17 Jul 2012 10:14:41 +0800
Committer: Ingo Molnar mi...@kernel.org
CommitDate: Thu, 26 Jul 2012 15:04:34
Commit-ID: 4a841d650ea435c69e60675537f158a620697290
Gitweb: http://git.kernel.org/tip/4a841d650ea435c69e60675537f158a620697290
Author: Jovi Zhang
AuthorDate: Sun, 15 Jul 2012 03:03:10 +0800
Committer: Arnaldo Carvalho de Melo
CommitDate: Wed, 25 Jul 2012 11:37:46 -0300
perf tools
Commit-ID: 35d56ca9d401d9d0ac8d91e4db1485af5f38f6fd
Gitweb: http://git.kernel.org/tip/35d56ca9d401d9d0ac8d91e4db1485af5f38f6fd
Author: Jovi Zhang
AuthorDate: Tue, 17 Jul 2012 10:14:41 +0800
Committer: Ingo Molnar
CommitDate: Thu, 26 Jul 2012 15:04:34 +0200
perf/x86: Fix missing struct
Commit-ID: d24d7dbf3cc49b00a152e55e24f0eeb173c7a971
Gitweb: http://git.kernel.org/tip/d24d7dbf3cc49b00a152e55e24f0eeb173c7a971
Author: Jovi Zhang
AuthorDate: Wed, 18 Jul 2012 18:16:44 +0800
Committer: Steven Rostedt
CommitDate: Mon, 21 Jan 2013 13:22:31 -0500
tracing: Verify target
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