Revert "nohz: Fix collision between tick and other hrtimers"
This reverts commit 24b91e36 and commit 7bdb59f1 ("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 <email@example.com> Acked-by: Frederic Weisbecker <firstname.lastname@example.org> Cc: Wanpeng Li <email@example.com> Cc: Peter Zijlstra <firstname.lastname@example.org> Cc: Rik van Riel <email@example.com> Cc: Thomas Gleixner <firstname.lastname@example.org> Cc: email@example.com # reverted commits were marked for stable Signed-off-by: Linus Torvalds <firstname.lastname@example.org>