From: Jiri Slaby <jirislaby@kernel.org>
To: Wladislav Wiebe <wladislav.wiebe@nokia.com>,
tglx@linutronix.de, corbet@lwn.net
Cc: akpm@linux-foundation.org, paulmck@kernel.org,
rostedt@goodmis.org, Neeraj.Upadhyay@amd.com, david@redhat.com,
bp@alien8.de, arnd@arndb.de, fvdl@google.com,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
peterz@infradead.org
Subject: Re: [PATCH v5] genirq: add support for warning on long-running IRQ handlers
Date: Thu, 7 Aug 2025 07:15:39 +0200 [thread overview]
Message-ID: <8fa90e41-53d1-4060-a077-6bf2807e0820@kernel.org> (raw)
In-Reply-To: <20250804093525.851-1-wladislav.wiebe@nokia.com>
On 04. 08. 25, 11:35, Wladislav Wiebe wrote:
> Introduce a mechanism to detect and warn about prolonged IRQ handlers.
> With a new command-line parameter (irqhandler.duration_warn_us=),
> users can configure the duration threshold in microseconds when a warning
> in such format should be emitted:
>
> "[CPU14] long duration of IRQ[159:bad_irq_handler [long_irq]], took: 1330 us"
>
> The implementation uses local_clock() to measure the execution duration of the
> generic IRQ per-CPU event handler.
>
> Signed-off-by: Wladislav Wiebe <wladislav.wiebe@nokia.com>
OK:
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
--
js
suse labs
prev parent reply other threads:[~2025-08-07 5:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-04 9:35 [PATCH v5] genirq: add support for warning on long-running IRQ handlers Wladislav Wiebe
2025-08-04 11:00 ` Jiri Slaby
2025-08-07 5:15 ` Jiri Slaby [this message]
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