diff options
| author | Steven Rostedt <[email protected]> | 2013-07-16 10:22:12 -0400 |
|---|---|---|
| committer | Frederic Weisbecker <[email protected]> | 2013-07-24 20:30:33 +0200 |
| commit | 543487c7a2670bb0d96c00673a44b74360e3b6c1 (patch) | |
| tree | 91aee197ada7a72a73ee34eaa339914be5468039 /net/unix/sysctl_net_unix.c | |
| parent | 3b2f64d00c46e1e4e9bd0bb9bb12619adac27a4b (diff) | |
nohz: Do not warn about unstable tsc unless user uses nohz_full
If the user enables CONFIG_NO_HZ_FULL and runs the kernel on a machine
with an unstable TSC, it will produce a WARN_ON dump as well as taint
the kernel. This is a bit extreme for a kernel that just enables a
feature but doesn't use it.
The warning should only happen if the user tries to use the feature by
either adding nohz_full to the kernel command line, or by enabling
CONFIG_NO_HZ_FULL_ALL that makes nohz used on all CPUs at boot up. Note,
this second feature should not (yet) be used by distros or anyone that
doesn't care if NO_HZ is used or not.
Signed-off-by: Steven Rostedt <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Li Zhong <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Kevin Hilman <[email protected]>
Signed-off-by: Frederic Weisbecker <[email protected]>
Diffstat (limited to 'net/unix/sysctl_net_unix.c')
0 files changed, 0 insertions, 0 deletions