]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/commit
nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off
authorThomas Gleixner <tglx@linutronix.de>
Fri, 29 Nov 2013 11:18:13 +0000 (12:18 +0100)
committerThomas Gleixner <tglx@linutronix.de>
Fri, 29 Nov 2013 11:23:03 +0000 (12:23 +0100)
commit0e576acbc1d9600cf2d9b4a141a2554639959d50
tree1d1322330afaa7cffdc39d2f898a7a0f02fa65c3
parent70fe8217e17ddd058f9f043ae1cc0d86b1658a5c
nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off

If CONFIG_NO_HZ=n tick_nohz_get_sleep_length() returns NSEC_PER_SEC/HZ.

If CONFIG_NO_HZ=y and the nohz functionality is disabled via the
command line option "nohz=off" or not enabled due to missing hardware
support, then tick_nohz_get_sleep_length() returns 0. That happens
because ts->sleep_length is never set in that case.

Set it to NSEC_PER_SEC/HZ when the NOHZ mode is inactive.

Reported-by: Michal Hocko <mhocko@suse.cz>
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
kernel/time/tick-sched.c