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authorFrederic Weisbecker <fweisbec@gmail.com>2013-04-12 16:45:34 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2013-04-15 19:58:17 +0200
commitc5bfece2d6129131b4ade985e63bc35ddf5868d4 (patch)
tree65b7f1c3e9ad5dd45375ccdc1dab187ba968cf59 /Documentation/kernel-parameters.txt
parent0644ca5c774f1a7033bfc83c7ed0660f74f28b56 (diff)
downloadlinux-c5bfece2d6129131b4ade985e63bc35ddf5868d4.tar.gz
nohz: Switch from "extended nohz" to "full nohz" based naming
"Extended nohz" was used as a naming base for the full dynticks API and Kconfig symbols. It reflects the fact the system tries to stop the tick in more places than just idle. But that "extended" name is a bit opaque and vague. Rename it to "full" makes it clearer what the system tries to do under this config: try to shutdown the tick anytime it can. The various constraints that prevent that to happen shouldn't be considered as fundamental properties of this feature but rather technical issues that may be solved in the future. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Christoph Lameter <cl@linux.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Gilad Ben Yossef <gilad@benyossef.com> Cc: Hakan Akkan <hakanakkan@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kevin Hilman <khilman@linaro.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt4
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 231698feaddc..82365dde00a8 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1913,8 +1913,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
Valid arguments: on, off
Default: on
- nohz_extended= [KNL,BOOT]
- In kernels built with CONFIG_NO_HZ_EXTENDED=y, set
+ nohz_full= [KNL,BOOT]
+ In kernels built with CONFIG_NO_HZ_FULL=y, set
the specified list of CPUs whose tick will be stopped
whenever possible. You need to keep at least one online
CPU outside the range to maintain the timekeeping.