This bit of information is in the Kconfig help text:
Note the boot CPU will still be kept outside the range to
handle the timekeeping duty.
However neither the variable NO_HZ_FULL_ALL, or the prompt
convey this important detail, so lets add it to the prompt
to make it more explicitly obvious to the average user.
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: "Paul E. McKenney" <paul...@linux.vnet.ibm.com>
Signed-off-by: Paul Gortmaker <paul.gortma...@windriver.com>
---
kernel/time/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig
index 3ce6e8c5f3fc..76a1fbef1fd8 100644
--- a/kernel/time/Kconfig
+++ b/kernel/time/Kconfig
@@ -124,7 +124,7 @@ config NO_HZ_FULL
endchoice
config NO_HZ_FULL_ALL
- bool "Full dynticks system on all CPUs by default"
+ bool "Full dynticks system on all (but boot) CPUs by default"
depends on NO_HZ_FULL
help
If the user doesn't pass the nohz_full boot option to
--
1.8.5.2
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