diff options
| author | Frederic Weisbecker <fweisbec@gmail.com> | 2013-04-12 16:45:34 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2013-04-15 19:58:17 +0200 |
| commit | c5bfece2d6129131b4ade985e63bc35ddf5868d4 (patch) | |
| tree | 65b7f1c3e9ad5dd45375ccdc1dab187ba968cf59 /kernel/time/Kconfig | |
| parent | 0644ca5c774f1a7033bfc83c7ed0660f74f28b56 (diff) | |
| download | blackbird-op-linux-c5bfece2d6129131b4ade985e63bc35ddf5868d4.tar.gz blackbird-op-linux-c5bfece2d6129131b4ade985e63bc35ddf5868d4.zip | |
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 'kernel/time/Kconfig')
| -rw-r--r-- | kernel/time/Kconfig | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig index cbe64be17d1f..4a17b5069466 100644 --- a/kernel/time/Kconfig +++ b/kernel/time/Kconfig @@ -96,7 +96,7 @@ config NO_HZ_IDLE Most of the time you want to say Y here. -config NO_HZ_EXTENDED +config NO_HZ_FULL bool "Full dynticks system (tickless single task)" # NO_HZ_COMMON dependency depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS @@ -115,7 +115,7 @@ config NO_HZ_EXTENDED task on the CPU. Chances for running tickless are maximized when the task mostly runs in userspace and has few kernel activity. - You need to fill up the nohz_extended boot parameter with the + You need to fill up the nohz_full boot parameter with the desired range of dynticks CPUs. This is implemented at the expense of some overhead in user <-> kernel |
