From: Pingfan Liu <kernelfans@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Pingfan Liu <kernelfans@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Jisheng Zhang <Jisheng.Zhang@synaptics.com>,
Andrew Morton <akpm@linux-foundation.org>,
"Guilherme G. Piccoli" <gpiccoli@canonical.com>,
Petr Mladek <pmladek@suse.com>, Marc Zyngier <maz@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
afzal mohammed <afzal.mohd.ma@gmail.com>,
Lina Iyer <ilina@codeaurora.org>,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>,
Maulik Shah <mkshah@codeaurora.org>,
Al Viro <viro@zeniv.linux.org.uk>,
Jonathan Corbet <corbet@lwn.net>,
Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Oliver Neukum <oneukum@suse.com>,
linux-doc@vger.kernel.org, kexec@lists.infradead.org
Subject: [PATCH 3/3] Documentation: introduce a param "irqflood_suppress"
Date: Thu, 22 Oct 2020 13:56:03 +0800 [thread overview]
Message-ID: <1603346163-21645-4-git-send-email-kernelfans@gmail.com> (raw)
In-Reply-To: <1603346163-21645-1-git-send-email-kernelfans@gmail.com>
The param "irqflood_suppress" is helpful for capture kernel to survive irq
flood.
Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Guilherme G. Piccoli" <gpiccoli@canonical.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: afzal mohammed <afzal.mohd.ma@gmail.com>
Cc: Lina Iyer <ilina@codeaurora.org>
Cc: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
Cc: Maulik Shah <mkshah@codeaurora.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Oliver Neukum <oneukum@suse.com>
To: linux-kernel@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: kexec@lists.infradead.org
---
Documentation/admin-guide/kernel-parameters.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index a106874..0a25a05 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2009,6 +2009,9 @@
for it. Also check all handlers each timer
interrupt. Intended to get systems with badly broken
firmware running.
+ irqflood_suppress [HW]
+ When a irq fully occupies a cpu in a long time, suppressing
+ it to make kernel move on. It is useful in the capture kernel.
isapnp= [ISAPNP]
Format: <RDP>,<reset>,<pci_scan>,<verbosity>
--
2.7.5
next prev parent reply other threads:[~2020-10-22 5:56 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-22 5:56 [PATCH 0/3] warn and suppress irqflood Pingfan Liu
2020-10-22 5:56 ` [PATCH 1/3] kernel/watchdog: show irq percentage if irq floods Pingfan Liu
2020-10-22 5:56 ` [PATCH 2/3] kernel/watchdog: suppress max irq when " Pingfan Liu
2020-10-22 5:56 ` Pingfan Liu [this message]
2020-10-22 8:37 ` [PATCH 0/3] warn and suppress irqflood Thomas Gleixner
2020-10-25 11:12 ` Pingfan Liu
2020-10-25 12:21 ` [Skiboot] " Oliver O'Halloran
2020-10-25 13:11 ` Pingfan Liu
2020-10-25 13:51 ` Oliver O'Halloran
2020-10-26 15:06 ` Guilherme Piccoli
2020-10-26 19:59 ` Thomas Gleixner
2020-10-26 20:28 ` Guilherme Piccoli
2020-10-26 21:21 ` Thomas Gleixner
2020-10-27 12:28 ` Guilherme Piccoli
2020-10-28 6:02 ` Pingfan Liu
2020-10-28 11:58 ` Thomas Gleixner
2020-10-29 6:26 ` Pingfan Liu
2020-11-06 5:53 ` Pingfan Liu
2020-11-18 3:36 ` [PATCH 0/3] use soft lockup to detect irq flood Pingfan Liu
2020-11-18 3:36 ` [PATCH 1/3] x86/irq: account the unused irq Pingfan Liu
2020-11-18 3:36 ` [PATCH 2/3] kernel/watchdog: make watchdog_touch_ts more accurate by using nanosecond Pingfan Liu
2020-11-18 3:36 ` [PATCH 3/3] kernel/watchdog: use soft lockup to detect irq flood Pingfan Liu
2021-03-02 7:45 ` [PATCH 0/3] warn and suppress irqflood Sai Prakash Ranjan
2021-06-05 2:32 ` Sai Prakash Ranjan
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