From: Dario Faggioli <dario.faggioli@citrix.com>
Date: Wed, 18 Mar 2015 13:20:37 +0000 (+0100)
Subject: print online pCPUs and free pCPUs when dumping
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~3572^2~1
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=ec61696dc648bf71aaa7e0673862fb3a30b4a8ad;p=xen.git

print online pCPUs and free pCPUs when dumping

e.g., with  `xl debug-key r', like this:

  (XEN) Online Cpus: 0-15
  (XEN) Free Cpus: 8-15

Also, for each cpupool, print the set of pCPUs it
contains, like this:

  (XEN) Cpupool 0:
  (XEN) Cpus: 0-7
  (XEN) Scheduler: SMP Credit Scheduler (credit)

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: Juergen Gross <jgross@suse.com>

cpumask_weight() -> !cpumask_empty()

Signed-off-by: Jan Beulich <jbeulich@suse.com>
---

diff --git a/xen/common/cpupool.c b/xen/common/cpupool.c
index cd6aab9661..a947c245f0 100644
--- a/xen/common/cpupool.c
+++ b/xen/common/cpupool.c
@@ -17,6 +17,7 @@
 #include <xen/percpu.h>
 #include <xen/sched.h>
 #include <xen/sched-if.h>
+#include <xen/keyhandler.h>
 #include <xen/cpu.h>
 
 #define for_each_cpupool(ptr)    \
@@ -658,6 +659,12 @@ int cpupool_do_sysctl(struct xen_sysctl_cpupool_op *op)
     return ret;
 }
 
+static void print_cpumap(const char *str, const cpumask_t *map)
+{
+    cpulist_scnprintf(keyhandler_scratch, sizeof(keyhandler_scratch), map);
+    printk("%s: %s\n", str, keyhandler_scratch);
+}
+
 void dump_runq(unsigned char key)
 {
     unsigned long    flags;
@@ -671,12 +678,17 @@ void dump_runq(unsigned char key)
             sched_smt_power_savings? "enabled":"disabled");
     printk("NOW=0x%08X%08X\n",  (u32)(now>>32), (u32)now);
 
+    print_cpumap("Online Cpus", &cpu_online_map);
+    if ( !cpumask_empty(&cpupool_free_cpus) )
+        print_cpumap("Free Cpus", &cpupool_free_cpus);
+
     printk("Idle cpupool:\n");
     schedule_dump(NULL);
 
     for_each_cpupool(c)
     {
         printk("Cpupool %d:\n", (*c)->cpupool_id);
+        print_cpumap("Cpus", (*c)->cpu_valid);
         schedule_dump(*c);
     }