From: Chris Friesen <chris.friesen@windriver.com>
To: LKML <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: IRQs in /proc/irq/* that aren't listed in /proc/interrupts?
Date: Mon, 12 Oct 2020 12:40:03 -0600 [thread overview]
Message-ID: <c74773ba-10ff-ba3a-b144-da5c2a34c74e@windriver.com> (raw)
Hi,
On one of my X86-64 systems /proc/interrupts starts with the following
interrupts (per-cpu info snipped):
0: IR-IO-APIC-edge timer
4: IR-IO-APIC-edge serial
8: IR-IO-APIC-edge rtc0
9: IR-IO-APIC-fasteoi acpi
17: IR-IO-APIC-fasteoi ehci_hcd:usb1, hpilo
On this same system /proc/irq shows these interrupts:
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
Is there any way to determine what the interrupts are that aren't listed
in /proc/interrupts? Six of them are affined to all CPUs, and I'm
trying to affine as many interrupts as possible to housekeeping CPUs to
free up application CPUs for low-latency operations.
I'm not subscribed to the list, so I'd appreciate being CC's on any replies.
Chris
next reply other threads:[~2020-10-12 18:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-12 18:40 Chris Friesen [this message]
2020-10-12 19:37 ` IRQs in /proc/irq/* that aren't listed in /proc/interrupts? Thomas Gleixner
2020-10-13 6:21 ` Chris Friesen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=c74773ba-10ff-ba3a-b144-da5c2a34c74e@windriver.com \
--to=chris.friesen@windriver.com \
--cc=linux-kernel@vger.kernel.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).