On 03/16/2015 06:05 PM, Dario Faggioli wrote:
e.g., with `xl debug-key r'. This change adds something
like the following lines to the dump output:
(XEN) Num online Cpus: 16, cpu_online_map: 0-15
(XEN) Num free Cpus: 8, cpupool_free_cpus: 8-15
Meaning there are 16 pCPUs online, and they are pCPUs
0-15, and that 8 of them, more specifically 8-15, are
not part of any cpupool.
Signed-off-by: Dario Faggioli <dario.faggi...@citrix.com>
Cc: Juergen Gross <jgr...@suse.com>
Cc: George Dunlap <george.dun...@eu.citrix.com>
Cc: Jan Beulich <jbeul...@suse.com>
Cc: Keir Fraser <k...@xen.org>
Acked-by: Juergen Gross <jgr...@suse.com>
---
xen/common/cpupool.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/xen/common/cpupool.c b/xen/common/cpupool.c
index cd6aab9..3bf0174 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 +678,18 @@ void dump_runq(unsigned char key)
sched_smt_power_savings? "enabled":"disabled");
printk("NOW=0x%08X%08X\n", (u32)(now>>32), (u32)now);
+ printk("Num online Cpus: %d, ", cpumask_weight(&cpu_online_map));
+ _print_cpumap("cpu_online_map", &cpu_online_map);
+ printk("Num free Cpus: %d, ", cpumask_weight(&cpupool_free_cpus));
+ _print_cpumap("cpupool_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);
}
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