Update the documentation to reflect the 1Hz tick offload changes.

Signed-off-by: Frederic Weisbecker <frede...@kernel.org>
Cc: Chris Metcalf <cmetc...@mellanox.com>
Cc: Christoph Lameter <c...@linux.com>
Cc: Luiz Capitulino <lcapitul...@redhat.com>
Cc: Mike Galbraith <efa...@gmx.de>
Cc: Paul E. McKenney <paul...@linux.vnet.ibm.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Rik van Riel <r...@redhat.com>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Wanpeng Li <kernel...@gmail.com>
Cc: Ingo Molnar <mi...@kernel.org>
 Documentation/admin-guide/kernel-parameters.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt 
index 1d1d53f..50b9837 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1766,6 +1766,17 @@
                          Disable the tick when a single task runs.
+                         A residual 1Hz tick is offloaded to workqueues, which 
+                         need to affine to housekeeping through the global
+                         workqueue's affinity configured via the
+                         /sys/devices/virtual/workqueue/cpumask sysfs file, or
+                         by using the 'domain' flag described below.
+                         NOTE: by default the global workqueue runs on all 
+                         so to protect individual CPUs the 'cpumask' file has 
+                         be configured manually after bootup.
                          Isolate from the general SMP balancing and scheduling
                          algorithms. Note that performing domain isolation 
this way

Reply via email to