From: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
To: Dinh Nguyen <dinguyen@kernel.org>,
Tony Luck <tony.luck@intel.com>,
linux-edac@vger.kernel.org, bp@alien8.de
Cc: kexec@lists.infradead.org, bhe@redhat.com, pmladek@suse.com,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
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x86@kernel.org, kernel-dev@igalia.com, kernel@gpiccoli.net,
halves@canonical.com, fabiomirmar@gmail.com,
alejandro.j.jimenez@oracle.com,
andriy.shevchenko@linux.intel.com, arnd@arndb.de, corbet@lwn.net,
d.hatayama@jp.fujitsu.com, dave.hansen@linux.intel.com,
dyoung@redhat.com, feng.tang@intel.com,
gregkh@linuxfoundation.org, mikelley@microsoft.com,
hidehiro.kawai.ez@hitachi.com, jgross@suse.com,
john.ogness@linutronix.de, keescook@chromium.org,
luto@kernel.org, mhiramat@kernel.org, mingo@redhat.com,
paulmck@kernel.org, peterz@infradead.org, rostedt@goodmis.org,
senozhatsky@chromium.org, stern@rowland.harvard.edu,
tglx@linutronix.de, vgoyal@redhat.com, vkuznets@redhat.com,
will@kernel.org, xuqiang36@huawei.com
Subject: Re: [PATCH V3 08/11] EDAC/altera: Skip the panic notifier if kdump is loaded
Date: Mon, 17 Oct 2022 11:05:53 -0300 [thread overview]
Message-ID: <1df38599-ace7-5673-4cbd-7861de385d79@igalia.com> (raw)
In-Reply-To: <742d2a7e-efee-e212-178e-ba642ec94e2a@igalia.com>
On 18/09/2022 11:10, Guilherme G. Piccoli wrote:
> On 19/08/2022 19:17, Guilherme G. Piccoli wrote:
>> The altera_edac panic notifier performs some data collection with
>> regards errors detected; such code relies in the regmap layer to
>> perform reads/writes, so the code is abstracted and there is some
>> risk level to execute that, since the panic path runs in atomic
>> context, with interrupts/preemption and secondary CPUs disabled.
>>
>> Users want the information collected in this panic notifier though,
>> so in order to balance the risk/benefit, let's skip the altera panic
>> notifier if kdump is loaded. While at it, remove a useless header
>> and encompass a macro inside the sole ifdef block it is used.
>>
>> Cc: Borislav Petkov <bp@alien8.de>
>> Cc: Petr Mladek <pmladek@suse.com>
>> Cc: Tony Luck <tony.luck@intel.com>
>> Acked-by: Dinh Nguyen <dinguyen@kernel.org>
>> Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
>>
>> ---
>>
>> V3:
>> - added the ack tag from Dinh - thanks!
>> - had a good discussion with Boris about that in V2 [0],
>> hopefully we can continue and reach a consensus in this V3.
>> [0] https://lore.kernel.org/lkml/46137c67-25b4-6657-33b7-cffdc7afc0d7@igalia.com/
>>
>> V2:
>> - new patch, based on the discussion in [1].
>> [1] https://lore.kernel.org/lkml/62a63fc2-346f-f375-043a-fa21385279df@igalia.com/
>>
>> [...]
>
> Hi Dinh, Tony, Boris - sorry for the ping.
Hey folks, apologies for the new ping.
Is there anything to improve here maybe? Reviews / opinions are very
appreciated!
Cheers,
Guilherme
next prev parent reply other threads:[~2022-10-17 14:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-19 22:17 [PATCH V3 00/11] The panic notifiers refactor - fixes/clean-ups (V3) Guilherme G. Piccoli
2022-08-19 22:17 ` [PATCH V3 08/11] EDAC/altera: Skip the panic notifier if kdump is loaded Guilherme G. Piccoli
2022-09-18 14:10 ` Guilherme G. Piccoli
2022-10-17 14:05 ` Guilherme G. Piccoli [this message]
2022-11-22 13:33 ` Guilherme G. Piccoli
2022-11-22 15:06 ` Borislav Petkov
2023-02-10 16:01 ` Guilherme G. Piccoli
2022-12-09 16:03 ` Petr Mladek
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