From: Kees Cook <keescook@chromium.org>
To: Joel Fernandes <joel@joelfernandes.org>
Cc: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@redhat.com>, Laura Abbott <labbott@redhat.com>,
Anton Vorontsov <anton@enomsg.org>,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org, Colin Cross <ccross@android.com>,
Jason Baron <jbaron@akamai.com>, Tony Luck <tony.luck@intel.com>,
Arnd Bergmann <arnd@arndb.de>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Joe Perches <joe@perches.com>, Jim Cromie <jim.cromie@gmail.com>,
Rajendra Nayak <rnayak@codeaurora.org>,
Vivek Gautam <vivek.gautam@codeaurora.org>,
Sibi Sankar <sibis@codeaurora.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
LK
Subject: Re: [PATCH 2/6] pstore: Add event tracing support
Date: Mon, 17 Sep 2018 07:54:49 -0700 [thread overview]
Message-ID: <CAGXu5jLkE+mZkVSFPeOq75im0Kozm+NzfqL9CD-OMe7b7=3O5g@mail.gmail.com> (raw)
In-Reply-To: <CAEXW_YSPNqVgoYWjVAMvGg_WoRV4SC2xDH1wQWTdQfBUOMQbbQ@mail.gmail.com>
On Sun, Sep 16, 2018 at 6:55 AM, Joel Fernandes <joel@joelfernandes.org> wrote:
> On Sun, Sep 16, 2018, 12:08 AM Sai Prakash Ranjan
> <saiprakash.ranjan@codeaurora.org> wrote:
>>
>> On 9/9/2018 1:57 AM, Sai Prakash Ranjan wrote:
>> > Currently pstore has function trace support which can be
>> > used to get the function call chain with limited data.
>> > Event tracing has extra data which is useful to debug wide
>> > variety of issues and is heavily used across the kernel.
>> >
>> > Adding this support to pstore can be very helpful to debug
>> > different subsystems since almost all of them have trace
>> > events already available. And also it is useful to debug
>> > unknown resets or crashes since we can get lot more info
>> > from event tracing by viewing the last occurred events.
>>
>> Anyone here?
>
> Sorry for the top post. I've been wanting to do this as well for some time.
> It's quite useful. I am out of office this week and away from work machine.
> I will take a look at your patches next week once I'm back at work. Thanks.
If Steven agrees this shouldn't live in ftrace directly and Joel
reviews these patches, I think it should be fine. I'm travelling, but
I can review it hopefully later this week.
-Kees
--
Kees Cook
Pixel Security
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <keescook@chromium.org>
To: Joel Fernandes <joel@joelfernandes.org>
Cc: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@redhat.com>, Laura Abbott <labbott@redhat.com>,
Anton Vorontsov <anton@enomsg.org>,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org, Colin Cross <ccross@android.com>,
Jason Baron <jbaron@akamai.com>, Tony Luck <tony.luck@intel.com>,
Arnd Bergmann <arnd@arndb.de>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Joe Perches <joe@perches.com>, Jim Cromie <jim.cromie@gmail.com>,
Rajendra Nayak <rnayak@codeaurora.org>,
Vivek Gautam <vivek.gautam@codeaurora.org>,
Sibi Sankar <sibis@codeaurora.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-arm-msm@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Ingo Molnar <mingo@kernel.org>,
Tom Zanussi <tom.zanussi@linux.intel.com>,
Prasad Sodagudi <psodagud@codeaurora.org>,
tsoni@codeaurora.org, Bryan Huntsman <bryanh@codeaurora.org>,
Tingwei Zhang <tingwei@codeaurora.org>,
Rob Herring <robh@kernel.org>
Subject: Re: [PATCH 2/6] pstore: Add event tracing support
Date: Mon, 17 Sep 2018 07:54:49 -0700 [thread overview]
Message-ID: <CAGXu5jLkE+mZkVSFPeOq75im0Kozm+NzfqL9CD-OMe7b7=3O5g@mail.gmail.com> (raw)
In-Reply-To: <CAEXW_YSPNqVgoYWjVAMvGg_WoRV4SC2xDH1wQWTdQfBUOMQbbQ@mail.gmail.com>
On Sun, Sep 16, 2018 at 6:55 AM, Joel Fernandes <joel@joelfernandes.org> wrote:
> On Sun, Sep 16, 2018, 12:08 AM Sai Prakash Ranjan
> <saiprakash.ranjan@codeaurora.org> wrote:
>>
>> On 9/9/2018 1:57 AM, Sai Prakash Ranjan wrote:
>> > Currently pstore has function trace support which can be
>> > used to get the function call chain with limited data.
>> > Event tracing has extra data which is useful to debug wide
>> > variety of issues and is heavily used across the kernel.
>> >
>> > Adding this support to pstore can be very helpful to debug
>> > different subsystems since almost all of them have trace
>> > events already available. And also it is useful to debug
>> > unknown resets or crashes since we can get lot more info
>> > from event tracing by viewing the last occurred events.
>>
>> Anyone here?
>
> Sorry for the top post. I've been wanting to do this as well for some time.
> It's quite useful. I am out of office this week and away from work machine.
> I will take a look at your patches next week once I'm back at work. Thanks.
If Steven agrees this shouldn't live in ftrace directly and Joel
reviews these patches, I think it should be fine. I'm travelling, but
I can review it hopefully later this week.
-Kees
--
Kees Cook
Pixel Security
WARNING: multiple messages have this Message-ID (diff)
From: keescook@chromium.org (Kees Cook)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/6] pstore: Add event tracing support
Date: Mon, 17 Sep 2018 07:54:49 -0700 [thread overview]
Message-ID: <CAGXu5jLkE+mZkVSFPeOq75im0Kozm+NzfqL9CD-OMe7b7=3O5g@mail.gmail.com> (raw)
In-Reply-To: <CAEXW_YSPNqVgoYWjVAMvGg_WoRV4SC2xDH1wQWTdQfBUOMQbbQ@mail.gmail.com>
On Sun, Sep 16, 2018 at 6:55 AM, Joel Fernandes <joel@joelfernandes.org> wrote:
> On Sun, Sep 16, 2018, 12:08 AM Sai Prakash Ranjan
> <saiprakash.ranjan@codeaurora.org> wrote:
>>
>> On 9/9/2018 1:57 AM, Sai Prakash Ranjan wrote:
>> > Currently pstore has function trace support which can be
>> > used to get the function call chain with limited data.
>> > Event tracing has extra data which is useful to debug wide
>> > variety of issues and is heavily used across the kernel.
>> >
>> > Adding this support to pstore can be very helpful to debug
>> > different subsystems since almost all of them have trace
>> > events already available. And also it is useful to debug
>> > unknown resets or crashes since we can get lot more info
>> > from event tracing by viewing the last occurred events.
>>
>> Anyone here?
>
> Sorry for the top post. I've been wanting to do this as well for some time.
> It's quite useful. I am out of office this week and away from work machine.
> I will take a look at your patches next week once I'm back at work. Thanks.
If Steven agrees this shouldn't live in ftrace directly and Joel
reviews these patches, I think it should be fine. I'm travelling, but
I can review it hopefully later this week.
-Kees
--
Kees Cook
Pixel Security
next prev parent reply other threads:[~2018-09-17 14:54 UTC|newest]
Thread overview: 141+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-08 20:27 [PATCH 0/6] Tracing register accesses with pstore and dynamic debug Sai Prakash Ranjan
2018-09-08 20:27 ` Sai Prakash Ranjan
2018-09-08 20:27 ` [PATCH 1/6] dt-bindings: ramoops: Add event-size property Sai Prakash Ranjan
2018-09-08 20:27 ` Sai Prakash Ranjan
2018-09-17 5:45 ` Rob Herring
2018-09-17 5:45 ` Rob Herring
2018-09-17 17:15 ` Sai Prakash Ranjan
2018-09-17 17:15 ` Sai Prakash Ranjan
2018-09-08 20:27 ` [PATCH 2/6] pstore: Add event tracing support Sai Prakash Ranjan
2018-09-08 20:27 ` Sai Prakash Ranjan
2018-09-11 10:46 ` Sai Prakash Ranjan
2018-09-11 10:46 ` Sai Prakash Ranjan
2018-09-17 17:38 ` Stephen Boyd
2018-09-17 17:38 ` Stephen Boyd
2018-09-17 19:43 ` Sai Prakash Ranjan
2018-09-17 19:43 ` Sai Prakash Ranjan
2018-09-16 7:07 ` Sai Prakash Ranjan
2018-09-16 7:07 ` Sai Prakash Ranjan
2018-09-16 13:55 ` Joel Fernandes
2018-09-17 14:54 ` Kees Cook [this message]
2018-09-17 14:54 ` Kees Cook
2018-09-17 14:54 ` Kees Cook
2018-09-17 17:17 ` Sai Prakash Ranjan
2018-09-17 17:17 ` Sai Prakash Ranjan
2018-09-17 17:17 ` Sai Prakash Ranjan
2018-09-17 17:13 ` Sai Prakash Ranjan
2018-09-17 17:13 ` Sai Prakash Ranjan
2018-09-17 17:13 ` Sai Prakash Ranjan
2018-09-17 23:04 ` Steven Rostedt
2018-09-17 23:04 ` Steven Rostedt
2018-09-17 23:04 ` Steven Rostedt
2018-09-18 6:24 ` Sai Prakash Ranjan
2018-09-18 6:24 ` Sai Prakash Ranjan
2018-09-18 6:24 ` Sai Prakash Ranjan
2018-09-17 23:34 ` Steven Rostedt
2018-09-17 23:34 ` Steven Rostedt
2018-09-17 23:34 ` Steven Rostedt
2018-09-18 17:52 ` Sai Prakash Ranjan
2018-09-18 17:52 ` Sai Prakash Ranjan
2018-09-18 17:52 ` Sai Prakash Ranjan
2018-09-18 20:44 ` Steven Rostedt
2018-09-18 20:44 ` Steven Rostedt
2018-09-18 20:44 ` Steven Rostedt
2018-09-18 21:13 ` Sai Prakash Ranjan
2018-09-18 21:13 ` Sai Prakash Ranjan
2018-09-18 21:13 ` Sai Prakash Ranjan
2018-09-22 6:48 ` Sai Prakash Ranjan
2018-09-22 6:48 ` Sai Prakash Ranjan
2018-09-22 6:48 ` Sai Prakash Ranjan
2018-09-22 9:05 ` Joel Fernandes
2018-09-22 9:05 ` Joel Fernandes
2018-09-22 9:05 ` Joel Fernandes
2018-09-22 16:37 ` Sai Prakash Ranjan
2018-09-22 16:37 ` Sai Prakash Ranjan
2018-09-22 16:37 ` Sai Prakash Ranjan
2018-09-22 17:32 ` Sai Prakash Ranjan
2018-09-22 17:32 ` Sai Prakash Ranjan
2018-09-22 17:32 ` Sai Prakash Ranjan
2018-09-22 17:45 ` Sai Prakash Ranjan
2018-09-22 17:45 ` Sai Prakash Ranjan
2018-09-22 17:45 ` Sai Prakash Ranjan
2018-09-23 15:33 ` Sai Prakash Ranjan
2018-09-23 15:33 ` Sai Prakash Ranjan
2018-09-23 15:33 ` Sai Prakash Ranjan
2018-09-25 20:37 ` Joel Fernandes
2018-09-25 20:37 ` Joel Fernandes
2018-09-25 20:37 ` Joel Fernandes
2018-09-25 20:39 ` Joel Fernandes
2018-09-25 20:39 ` Joel Fernandes
2018-09-25 20:39 ` Joel Fernandes
2018-09-25 20:40 ` Joel Fernandes
2018-09-25 20:40 ` Joel Fernandes
2018-09-25 20:40 ` Joel Fernandes
2018-09-26 9:52 ` Sai Prakash Ranjan
2018-09-26 9:52 ` Sai Prakash Ranjan
2018-09-26 9:52 ` Sai Prakash Ranjan
2018-09-08 20:27 ` [PATCH 3/6] tracing: Add tp_pstore cmdline to have tracepoints go to pstore Sai Prakash Ranjan
2018-09-08 20:27 ` Sai Prakash Ranjan
2018-09-25 21:25 ` Joel Fernandes
2018-09-25 21:25 ` Joel Fernandes
2018-09-25 21:25 ` Joel Fernandes
2018-09-26 9:46 ` Sai Prakash Ranjan
2018-09-26 9:46 ` Sai Prakash Ranjan
2018-09-26 9:46 ` Sai Prakash Ranjan
2018-10-08 14:16 ` Sai Prakash Ranjan
2018-10-08 14:16 ` Sai Prakash Ranjan
2018-10-08 14:16 ` Sai Prakash Ranjan
2018-10-08 14:36 ` Steven Rostedt
2018-10-08 14:36 ` Steven Rostedt
2018-10-08 14:36 ` Steven Rostedt
2018-10-08 22:40 ` Joel Fernandes
2018-10-08 22:40 ` Joel Fernandes
2018-10-08 22:40 ` Joel Fernandes
2018-10-09 18:22 ` Sai Prakash Ranjan
2018-10-09 18:22 ` Sai Prakash Ranjan
2018-10-09 18:22 ` Sai Prakash Ranjan
2018-10-10 19:37 ` Steven Rostedt
2018-10-10 19:37 ` Steven Rostedt
2018-10-10 19:37 ` Steven Rostedt
2018-09-08 20:27 ` [PATCH 4/6] arm64/io: Add tracepoint for register accesses Sai Prakash Ranjan
2018-09-08 20:27 ` Sai Prakash Ranjan
2018-09-08 20:27 ` [PATCH 5/6] arm64/io: Add header for instrumentation of io operations Sai Prakash Ranjan
2018-09-08 20:27 ` Sai Prakash Ranjan
2018-09-17 23:39 ` Steven Rostedt
2018-09-17 23:39 ` Steven Rostedt
2018-09-17 23:39 ` Steven Rostedt
2018-09-18 7:10 ` Sai Prakash Ranjan
2018-09-18 7:10 ` Sai Prakash Ranjan
2018-09-18 7:10 ` Sai Prakash Ranjan
2018-09-18 11:47 ` Will Deacon
2018-09-18 11:47 ` Will Deacon
2018-09-18 11:47 ` Will Deacon
2018-09-18 12:43 ` Sai Prakash Ranjan
2018-09-18 12:43 ` Sai Prakash Ranjan
2018-09-18 12:43 ` Sai Prakash Ranjan
2018-09-08 20:27 ` [PATCH 6/6] dynamic_debug: Add flag for dynamic event tracing Sai Prakash Ranjan
2018-09-08 20:27 ` Sai Prakash Ranjan
2018-09-11 15:11 ` [PATCH 0/6] Tracing register accesses with pstore and dynamic debug Will Deacon
2018-09-11 15:11 ` Will Deacon
2018-09-11 15:11 ` Will Deacon
2018-09-11 16:11 ` Sai Prakash Ranjan
2018-09-11 16:11 ` Sai Prakash Ranjan
2018-09-11 16:11 ` Sai Prakash Ranjan
2018-10-20 5:25 ` Joel Fernandes
2018-10-20 5:25 ` Joel Fernandes
2018-10-20 5:25 ` Joel Fernandes
2018-10-20 6:32 ` Sai Prakash Ranjan
2018-10-20 6:32 ` Sai Prakash Ranjan
2018-10-20 6:32 ` Sai Prakash Ranjan
2018-10-20 16:27 ` Joel Fernandes
2018-10-20 16:27 ` Joel Fernandes
2018-10-20 16:27 ` Joel Fernandes
2018-10-21 3:46 ` Sai Prakash Ranjan
2018-10-21 3:46 ` Sai Prakash Ranjan
2018-10-21 3:46 ` Sai Prakash Ranjan
2018-10-21 4:59 ` Sai Prakash Ranjan
2018-10-21 4:59 ` Sai Prakash Ranjan
2018-10-21 4:59 ` Sai Prakash Ranjan
2018-10-21 5:09 ` Joel Fernandes
2018-10-21 5:09 ` Joel Fernandes
2018-10-21 5:09 ` Joel Fernandes
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