From: Juergen Gross <jgross@suse.com>
Date: Thu, 20 Feb 2020 10:38:31 +0000 (+0100)
Subject: sched: don't disable interrupts all the time when dumping run-queues
X-Git-Tag: archive/raspbian/4.14.0+80-gd101b417b7-1+rpi1^2~63^2~666
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=6e0b445ee738cd829ed28c7532cded8afe25886d;p=xen.git

sched: don't disable interrupts all the time when dumping run-queues

Having interrupts disabled all the time when running dump_runq() is
not necessary. All the called functions are doing proper locking
and disable interrupts if needed.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Dario Faggioli <dfaggioli@suse.com>
---

diff --git a/xen/common/sched/cpupool.c b/xen/common/sched/cpupool.c
index 476916c6ea..b7721b5d02 100644
--- a/xen/common/sched/cpupool.c
+++ b/xen/common/sched/cpupool.c
@@ -889,12 +889,10 @@ const cpumask_t *cpupool_valid_cpus(const struct cpupool *pool)
 
 void dump_runq(unsigned char key)
 {
-    unsigned long    flags;
     s_time_t         now = NOW();
     struct cpupool **c;
 
     spin_lock(&cpupool_lock);
-    local_irq_save(flags);
 
     printk("sched_smt_power_savings: %s\n",
             sched_smt_power_savings? "enabled":"disabled");
@@ -914,7 +912,6 @@ void dump_runq(unsigned char key)
         schedule_dump(*c);
     }
 
-    local_irq_restore(flags);
     spin_unlock(&cpupool_lock);
 }