On 03/17/2015 04:33 PM, Dario Faggioli wrote:
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.faggi...@citrix.com>
Acked-by: Juergen Gross <jgr...@suse.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>
---
Changes from v1:
* _print_cpumap() becomes print_cpumap() (i.e., the
leading '_' was not particularly useful in this
case), as suggested during review
* changed the output such as (1) we only print the
maps, not the number of elements, and (2) we avoid
printing the free cpus map when empty
* improved the changelog
---
I'm not including any Reviewed-by / Acked-by tag,
since the patch changed.
---
xen/common/cpupool.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/xen/common/cpupool.c b/xen/common/cpupool.c
index cd6aab9..812a2f9 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_weight(&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);
}
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