The patch titled
x86_64: prep idle loop for dynticks
has been added to the -mm tree. Its filename is
x86_64-prep-idle-loop-for-dynticks.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: x86_64: prep idle loop for dynticks
From: Chris Wright <chrisw@xxxxxxxxxxxx>
Add tick_nohz_{stop,restart}_sched_tick to idle loop in prepartion for turning
on dynticks. These are just noops until NO_HZ is enabled in next patch.
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: john stultz <johnstul@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86_64/kernel/process.c | 4 ++++
1 files changed, 4 insertions(+)
diff -puN arch/x86_64/kernel/process.c~x86_64-prep-idle-loop-for-dynticks arch/x86_64/kernel/process.c
--- a/arch/x86_64/kernel/process.c~x86_64-prep-idle-loop-for-dynticks
+++ a/arch/x86_64/kernel/process.c
@@ -37,6 +37,7 @@
#include <linux/notifier.h>
#include <linux/kprobes.h>
#include <linux/kdebug.h>
+#include <linux/tick.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -207,6 +208,8 @@ void cpu_idle (void)
if (__get_cpu_var(cpu_idle_state))
__get_cpu_var(cpu_idle_state) = 0;
+ tick_nohz_stop_sched_tick();
+
check_pgt_cache();
rmb();
idle = pm_idle;
@@ -228,6 +231,7 @@ void cpu_idle (void)
__exit_idle();
}
+ tick_nohz_restart_sched_tick();
preempt_enable_no_resched();
schedule();
preempt_disable();
_
Patches currently in -mm which might be from chrisw@xxxxxxxxxxxx are
ntp-move-the-cmos-update-code-into-ntpc.patch
i386-hpet-assumes-boot-cpu-is-0.patch
x86_64-untangle-asm-hpeth-from-asm-timexh.patch
x86_64-use-generic-cmos-update.patch
x86_64-convert-to-cleckevents.patch
x86_64-restore-restore-nohpet-cmdline.patch
x86_64-prep-idle-loop-for-dynticks.patch
x86_64-enable-high-resolution-timers-and-dynticks.patch
implement-file-posix-capabilities.patch
implement-file-posix-capabilities-fix.patch
user-namespace-add-the-framework.patch
user-namespace-add-unshare.patch
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