sched/isolation: Move isolcpus= handling to the housekeeping code

We want to centralize the isolation features, to be done by the housekeeping
subsystem and scheduler domain isolation is a significant part of it.

No intended behaviour change, we just reuse the housekeeping cpumask
and core code.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Wanpeng Li <kernellwp@gmail.com>
Link: http://lkml.kernel.org/r/1509072159-31808-11-git-send-email-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2 files changed, 1 insertions, 2 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0f897dfc195e..1b0cc0d6df8d 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -165,8 +165,6 @@ struct task_group;
 /* Task command name length: */
 #define TASK_COMM_LEN                   16
 
-extern cpumask_var_t                    cpu_isolated_map;
-
 extern void scheduler_tick(void);
 
 #define MAX_SCHEDULE_TIMEOUT            LONG_MAX
diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h
index e53cfa96e91e..d849431c8060 100644
--- a/include/linux/sched/isolation.h
+++ b/include/linux/sched/isolation.h
@@ -11,6 +11,7 @@ enum hk_flags {
         HK_FLAG_MISC            = (1 << 2),
         HK_FLAG_SCHED           = (1 << 3),
         HK_FLAG_TICK            = (1 << 4),
+        HK_FLAG_DOMAIN          = (1 << 5),
 };
 
 #ifdef CONFIG_CPU_ISOLATION