[Xen-devel] [PATCH 2/6]xl: Add 'xl tmem-freeze' command

[Yang Hongyang <yanghy@xxxxxxxxxxxxxx>]

Add 'xl tmem-freeze' command

Signed-off-by: Yang Hongyang<yanghy@xxxxxxxxxxxxxx> 

diff -r 540720cb1f64 tools/libxl/libxl.c
--- a/tools/libxl/libxl.c       Wed May 19 23:25:41 2010 +0800
+++ b/tools/libxl/libxl.c       Wed May 19 23:28:56 2010 +0800
@@ -2840,3 +2840,18 @@
 
     return strdup(_buf);
 }
+
+int libxl_tmem_freeze(struct libxl_ctx *ctx, uint32_t domid)
+{
+    int rc;
+
+    rc = xc_tmem_control(ctx->xch, -1, TMEMC_FREEZE, domid, 0, 0,
+                         0, NULL);
+    if (rc < 0) {
+        XL_LOG_ERRNOVAL(ctx, XL_LOG_ERROR, rc,
+            "Can not freeze tmem pools");
+        return -1;
+    }
+
+    return rc;
+}
diff -r 540720cb1f64 tools/libxl/libxl.h
--- a/tools/libxl/libxl.h       Wed May 19 23:25:41 2010 +0800
+++ b/tools/libxl/libxl.h       Wed May 19 23:28:56 2010 +0800
@@ -514,6 +514,7 @@
 uint32_t libxl_vm_get_start_time(struct libxl_ctx *ctx, uint32_t domid);
 
 char *libxl_tmem_list(struct libxl_ctx *ctx, uint32_t domid, int use_long);
+int libxl_tmem_freeze(struct libxl_ctx *ctx, uint32_t domid);
 
 #endif /* LIBXL_H */
 
diff -r 540720cb1f64 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c  Wed May 19 23:25:41 2010 +0800
+++ b/tools/libxl/xl_cmdimpl.c  Wed May 19 23:28:56 2010 +0800
@@ -3713,3 +3713,40 @@
     free(buf);
     exit(0);
 }
+
+int main_tmem_freeze(int argc, char **argv)
+{
+    char *dom = NULL;
+    int all = 0;
+    int opt;
+
+    while ((opt = getopt(argc, argv, "ah")) != -1) {
+        switch (opt) {
+        case 'a':
+            all = 1;
+            break;
+        case 'h':
+            help("tmem-freeze");
+            exit(0);
+        default:
+            fprintf(stderr, "option `%c' not supported.\n", opt);
+            break;
+        }
+    }
+
+    dom = argv[optind];
+    if (!dom && all == 0) {
+        fprintf(stderr, "You must specify -a or a domain id.\n\n");
+        help("tmem-freeze");
+        exit(1);
+    }
+
+    if (all)
+        domid = -1;
+    else
+        find_domain(dom);
+
+    libxl_tmem_freeze(&ctx, domid);
+    exit(0);
+}
+
diff -r 540720cb1f64 tools/libxl/xl_cmdimpl.h
--- a/tools/libxl/xl_cmdimpl.h  Wed May 19 23:25:41 2010 +0800
+++ b/tools/libxl/xl_cmdimpl.h  Wed May 19 23:28:56 2010 +0800
@@ -53,6 +53,7 @@
 int main_blockdetach(int argc, char **argv);
 int main_uptime(int argc, char **argv);
 int main_tmem_list(int argc, char **argv);
+int main_tmem_freeze(int argc, char **argv);
 
 void help(char *command);
 
diff -r 540720cb1f64 tools/libxl/xl_cmdtable.c
--- a/tools/libxl/xl_cmdtable.c Wed May 19 23:25:41 2010 +0800
+++ b/tools/libxl/xl_cmdtable.c Wed May 19 23:28:56 2010 +0800
@@ -230,6 +230,12 @@
       "[-l] [<Domain>|-a]",
       "  -l                             List tmem stats",
     },
+    { "tmem-freeze",
+      &main_tmem_freeze,
+      "Freeze tmem pools",
+      "[<Domain>|-a]",
+      "  -a                             Freeze all tmem",
+    },
 };
 
 int cmdtable_len = sizeof(cmd_table)/sizeof(struct cmd_spec);

-- 
Regards
Yang Hongyang

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