From: Dmitry Ilvokhin <d@ilvokhin.com>
To: Thomas Gleixner <tglx@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
x86@kernel.org, Neil Horman <nhorman@tuxdriver.com>,
Radu Rendec <radu@rendec.net>
Subject: Re: [patch v2 13/14] [RFC] genirq/proc: Provide architecture specific binary statistics
Date: Wed, 1 Apr 2026 16:51:24 +0000 [thread overview]
Message-ID: <ac1NDJ6TICEcCe0E@shell.ilvokhin.com> (raw)
In-Reply-To: <20260320132102.910277045@kernel.org>
On Fri, Mar 20, 2026 at 02:22:29PM +0100, Thomas Gleixner wrote:
> Provide a binary statistics interface similar to the per device and per CPU
> interfaces to access the architecture specific interrupt statistics.
>
> The architecture has to select it in Kconfig and provide an accessor to the
> per CPU interrupt information and the number of architecture specific
> entries.
>
> The entries are ordered by a numerical index starting from 0, which
> corresponds to the ordering of those interrupts in /proc/interrupt. The
This mapping is fragile. The IRQ_COUNT_* enum is kernel-internal,
config-dependent, and not exposed to userspace. Correlating indices to
names via /proc/interrupts line positions relies on both interfaces
skipping the same entries, which is not enforced.
Would it make sense to expose the short symbol name (e.g. "NMI", "LOC",
"TLB") alongside the index, or provide a companion file that lists them?
next prev parent reply other threads:[~2026-04-01 16:51 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-20 13:21 [patch v2 00/14] Improve /proc/interrupts further and add a binary interface Thomas Gleixner
2026-03-20 13:21 ` [patch v2 01/14] x86/irq: Optimize interrupts decimals printing Thomas Gleixner
2026-03-21 16:10 ` Radu Rendec
2026-03-20 13:21 ` [patch v2 02/14] genirq/proc: Avoid formatting zero counts in /proc/interrupts Thomas Gleixner
2026-03-21 16:38 ` Radu Rendec
2026-03-20 13:21 ` [patch v2 03/14] genirq/proc: Utilize irq_desc::tot_count to avoid evaluation Thomas Gleixner
2026-03-22 19:59 ` Radu Rendec
2026-03-20 13:21 ` [patch v2 04/14] x86/irq: Make irqstats array based Thomas Gleixner
2026-03-20 16:39 ` Michael Kelley
2026-03-21 16:38 ` Thomas Gleixner
2026-03-21 20:32 ` Michael Kelley
2026-03-23 19:24 ` Radu Rendec
2026-03-24 19:54 ` Thomas Gleixner
2026-03-24 20:21 ` Thomas Gleixner
2026-03-24 20:32 ` Radu Rendec
2026-03-25 19:20 ` Radu Rendec
2026-03-25 22:52 ` Thomas Gleixner
2026-03-25 22:54 ` Florian Fainelli
2026-03-26 10:29 ` Thomas Gleixner
2026-03-26 23:00 ` Florian Fainelli
2026-03-27 11:03 ` Thomas Gleixner
2026-03-26 12:34 ` Radu Rendec
2026-03-20 13:21 ` [patch v2 05/14] genirq: Expose nr_irqs in core code Thomas Gleixner
2026-03-23 19:48 ` Radu Rendec
2026-03-23 21:27 ` Thomas Gleixner
2026-03-20 13:21 ` [patch v2 06/14] genirq: Cache the condition for /proc/interrupts exposure Thomas Gleixner
2026-03-23 20:58 ` Radu Rendec
2026-03-24 20:31 ` Thomas Gleixner
2026-03-24 20:36 ` Radu Rendec
2026-03-20 13:21 ` [patch v2 07/14] genirq: Calculate precision only when required Thomas Gleixner
2026-03-25 19:47 ` Radu Rendec
2026-03-20 13:22 ` [patch v2 08/14] genirq: Add rcuref count to struct irq_desc Thomas Gleixner
2026-03-26 18:43 ` Dmitry Ilvokhin
2026-03-20 13:22 ` [patch v2 09/14] genirq: Expose irq_find_desc_at_or_after() in core code Thomas Gleixner
2026-03-26 19:13 ` Dmitry Ilvokhin
2026-03-26 21:11 ` Thomas Gleixner
2026-03-26 21:25 ` Thomas Gleixner
2026-03-20 13:22 ` [patch v2 10/14] genirq/proc: Speed up /proc/interrupts iteration Thomas Gleixner
2026-03-20 13:22 ` [patch v2 11/14] [RFC] genirq: Cache target CPU for single CPU affinities Thomas Gleixner
2026-03-20 13:22 ` [patch v2 12/14] [RFC] genirq/proc: Provide binary statistic interface Thomas Gleixner
2026-04-01 16:42 ` Dmitry Ilvokhin
2026-03-20 13:22 ` [patch v2 13/14] [RFC] genirq/proc: Provide architecture specific binary statistics Thomas Gleixner
2026-04-01 16:51 ` Dmitry Ilvokhin [this message]
2026-04-01 19:33 ` Thomas Gleixner
2026-03-20 13:22 ` [patch v2 14/14] [RFC] x86/irq: Hook up architecture specific stats Thomas Gleixner
2026-03-20 16:45 ` [patch v2 00/14] Improve /proc/interrupts further and add a binary interface Michael Kelley
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