# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1259909888 0
# Node ID 0930d17589a6309933cbf8a5848f45dd393e617d
# Parent fc43518b59f9d36ef4d1138e56645412c4b48531
Add keyhandler 'g' to print all active grant table entries.
Authored-By: Robert Phillips
Signed-off-By: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
xen/common/grant_table.c | 83 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 83 insertions(+)
diff -r fc43518b59f9 -r 0930d17589a6 xen/common/grant_table.c
--- a/xen/common/grant_table.c Fri Dec 04 06:51:53 2009 +0000
+++ b/xen/common/grant_table.c Fri Dec 04 06:58:08 2009 +0000
@@ -35,6 +35,7 @@
#include <xen/domain_page.h>
#include <xen/iommu.h>
#include <xen/paging.h>
+#include <xen/keyhandler.h>
#include <xsm/xsm.h>
#ifndef max_nr_grant_frames
@@ -2502,6 +2503,88 @@ grant_table_destroy(
d->grant_table = NULL;
}
+void gnttab_usage_print(struct domain *rd)
+{
+ int first = 1;
+ grant_ref_t ref;
+
+ printk(" -------- active -------- -------- shared --------\n");
+ printk("[ref] localdom mfn pin localdom gmfn flags\n");
+
+ spin_lock(&rd->grant_table->lock);
+
+ for ( ref = 0; ref != nr_grant_entries(rd->grant_table); ref++ )
+ {
+ struct active_grant_entry *act;
+ struct grant_entry_header *sha;
+ grant_entry_v1_t *sha1;
+ grant_entry_v2_t *sha2;
+ uint16_t status;
+ uint64_t frame;
+
+ act = &active_entry(rd->grant_table, ref);
+ if ( !act->pin )
+ continue;
+
+ sha = shared_entry_header(rd->grant_table, ref);
+
+ if ( rd->grant_table->gt_version == 1 )
+ {
+ sha1 = &shared_entry_v1(rd->grant_table, ref);
+ sha2 = NULL;
+ status = sha->flags;
+ frame = sha1->frame;
+ }
+ else
+ {
+ sha2 = &shared_entry_v2(rd->grant_table, ref);
+ sha1 = NULL;
+ frame = sha2->full_page.frame;
+ status = status_entry(rd->grant_table, ref);
+ }
+
+ if ( first )
+ {
+ printk("grant-table for remote domain:%5d (v%d)\n",
+ rd->domain_id, rd->grant_table->gt_version);
+ first = 0;
+ }
+
+ /* [ddd] ddddd 0xXXXXXX 0xXXXXXXXX ddddd 0xXXXXXX 0xXX */
+ printk("[%3d] %5d 0x%06lx 0x%08x %5d 0x%06lx 0x%02x\n",
+ ref, act->domid, act->frame, act->pin,
+ sha->domid, frame, status);
+ }
+
+ spin_unlock(&rd->grant_table->lock);
+
+ if ( first )
+ printk("grant-table for remote domain:%5d ... "
+ "no active grant table entries\n", rd->domain_id);
+}
+
+static void gnttab_usage_print_all(unsigned char key)
+{
+ struct domain *d;
+ printk("%s [ key '%c' pressed\n", __FUNCTION__, key);
+ for_each_domain ( d )
+ gnttab_usage_print(d);
+ printk("%s ] done\n", __FUNCTION__);
+}
+
+static struct keyhandler gnttab_usage_print_all_keyhandler = {
+ .diagnostic = 1,
+ .u.fn = gnttab_usage_print_all,
+ .desc = "print grant table usage"
+};
+
+static int __init gnttab_usage_init(void)
+{
+ register_keyhandler('g', &gnttab_usage_print_all_keyhandler);
+ return 0;
+}
+__initcall(gnttab_usage_init);
+
/*
* Local variables:
* mode: C
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