diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-16 12:19:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-16 12:19:18 -0800 |
| commit | 558e8e27e73f53f8a512485be538b07115fe5f3c (patch) | |
| tree | 7a2f37e7a575537db37ee1238471bbb4f3e0a488 /kernel/time/tick-sched.h | |
| parent | 4695daefba8df8a11fa0b0edd595eedae9ea59ae (diff) | |
Revert "nohz: Fix collision between tick and other hrtimers"
This reverts commit 24b91e360ef521a2808771633d76ebc68bd5604b and commit
7bdb59f1ad47 ("tick/nohz: Fix possible missing clock reprog after tick
soft restart") that depends on it,
Pavel reports that it causes occasional boot hangs for him that seem to
depend on just how the machine was booted. In particular, his machine
hangs at around the PCI fixups of the EHCI USB host controller, but only
hangs from cold boot, not from a warm boot.
Thomas Gleixner suspecs it's a CPU hotplug interaction, particularly
since Pavel also saw suspend/resume issues that seem to be related.
We're reverting for now while trying to figure out the root cause.
Reported-bisected-and-tested-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@kernel.org # reverted commits were marked for stable
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/time/tick-sched.h')
| -rw-r--r-- | kernel/time/tick-sched.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/time/tick-sched.h b/kernel/time/tick-sched.h index 075444e3d48e..bf38226e5c17 100644 --- a/kernel/time/tick-sched.h +++ b/kernel/time/tick-sched.h @@ -27,7 +27,6 @@ enum tick_nohz_mode { * timer is modified for nohz sleeps. This is necessary * to resume the tick timer operation in the timeline * when the CPU returns from nohz sleep. - * @next_tick: Next tick to be fired when in dynticks mode. * @tick_stopped: Indicator that the idle tick has been stopped * @idle_jiffies: jiffies at the entry to idle for idle time accounting * @idle_calls: Total number of idle calls @@ -45,7 +44,6 @@ struct tick_sched { unsigned long check_clocks; enum tick_nohz_mode nohz_mode; ktime_t last_tick; - ktime_t next_tick; int inidle; int tick_stopped; unsigned long idle_jiffies; |