From: Frederic Weisbecker <frederic@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Peter Zijlstra <peterz@infradead.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Chris Metcalf <cmetcalf@mellanox.com>,
John Stultz <john.stultz@linaro.org>,
Frederic Weisbecker <frederic@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Luiz Capitulino <lcapitulino@redhat.com>,
Christoph Lameter <cl@linux.com>,
Wanpeng Li <kernellwp@gmail.com>, Mike Galbraith <efault@gmx.de>,
Rik van Riel <riel@redhat.com>,
kernel test robot <xiaolong.ye@intel.com>
Subject: [PATCH 3/3] sched/isolation: Document boot parameters dependency on CONFIG_CPU_ISOLATION
Date: Thu, 14 Dec 2017 15:14:53 +0100 [thread overview]
Message-ID: <1513260893-26616-4-git-send-email-frederic@kernel.org> (raw)
In-Reply-To: <1513260893-26616-1-git-send-email-frederic@kernel.org>
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
The "isolcpus=" and "nohz_full=" boot parameters depend on CPU Isolation
support. Let's document that.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Wanpeng Li <kernellwp@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: John Stultz <john.stultz@linaro.org>
---
Documentation/admin-guide/kernel-parameters.rst | 1 +
Documentation/admin-guide/kernel-parameters.txt | 4 ++--
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/kernel-parameters.rst b/Documentation/admin-guide/kernel-parameters.rst
index b2598cc..7242cbd 100644
--- a/Documentation/admin-guide/kernel-parameters.rst
+++ b/Documentation/admin-guide/kernel-parameters.rst
@@ -109,6 +109,7 @@ parameter is applicable::
IPV6 IPv6 support is enabled.
ISAPNP ISA PnP code is enabled.
ISDN Appropriate ISDN support is enabled.
+ ISOL CPU Isolation is enabled.
JOY Appropriate joystick support is enabled.
KGDB Kernel debugger support is enabled.
KVM Kernel Virtual Machine support is enabled.
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 6571fbf..1683107 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1737,7 +1737,7 @@
isapnp= [ISAPNP]
Format: <RDP>,<reset>,<pci_scan>,<verbosity>
- isolcpus= [KNL,SMP] Isolate a given set of CPUs from disturbance.
+ isolcpus= [KNL,SMP,ISOL] Isolate a given set of CPUs from disturbance.
[Deprecated - use cpusets instead]
Format: [flag-list,]<cpu-list>
@@ -2662,7 +2662,7 @@
Valid arguments: on, off
Default: on
- nohz_full= [KNL,BOOT]
+ nohz_full= [KNL,BOOT,SMP,ISOL]
The argument is a cpu list, as described above.
In kernels built with CONFIG_NO_HZ_FULL=y, set
the specified list of CPUs whose tick will be stopped
--
2.7.4
next prev parent reply other threads:[~2017-12-14 14:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-14 14:14 [GIT PULL] Nohz / isolation fixes Frederic Weisbecker
2017-12-14 14:14 ` [PATCH 1/3] sched/isolation: Make NO_HZ_FULL select CPU_ISOLATION Frederic Weisbecker
2017-12-14 14:14 ` [PATCH 2/3] sched/isolation: Enable CONFIG_CPU_ISOLATION=y by default Frederic Weisbecker
2017-12-14 14:14 ` Frederic Weisbecker [this message]
2017-12-14 18:16 ` [GIT PULL] Nohz / isolation fixes Frederic Weisbecker
-- strict thread matches above, loose matches on Subject: below --
2017-12-14 18:18 [GIT PULL] Nohz and isolation fixes v2 Frederic Weisbecker
2017-12-14 18:18 ` [PATCH 3/3] sched/isolation: Document boot parameters dependency on CONFIG_CPU_ISOLATION Frederic Weisbecker
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