[Xen-devel] [PATCH 5/6]xl: Add 'xl tmem-set' command

[Yang Hongyang <yanghy@xxxxxxxxxxxxxx>]

Add 'xl tmem-set' command

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

diff -r f5c579127b26 tools/libxl/libxl.c
--- a/tools/libxl/libxl.c       Wed May 19 23:35:17 2010 +0800
+++ b/tools/libxl/libxl.c       Wed May 19 23:37:09 2010 +0800
@@ -2885,3 +2885,35 @@
 
     return rc;
 }
+
+static int32_t tmem_setop_from_string(char *set_name)
+{
+    if (!strcmp(set_name, "weight"))
+        return TMEMC_SET_WEIGHT;
+    else if (!strcmp(set_name, "cap"))
+        return TMEMC_SET_CAP;
+    else if (!strcmp(set_name, "compress"))
+        return TMEMC_SET_COMPRESS;
+    else
+        return -1;
+}
+
+int libxl_tmem_set(struct libxl_ctx *ctx, uint32_t domid, char* name, uint32_t 
set)
+{
+    int rc;
+    int32_t subop = tmem_setop_from_string(name);
+
+    if (subop == -1) {
+        XL_LOG_ERRNOVAL(ctx, XL_LOG_ERROR, -1,
+            "Invalid set, valid sets are <weight|cap|compress>");
+        return -1;
+    }
+    rc = xc_tmem_control(ctx->xch, -1, subop, domid, set, 0, 0, NULL);
+    if (rc < 0) {
+        XL_LOG_ERRNOVAL(ctx, XL_LOG_ERROR, rc,
+            "Can not set tmem %s", name);
+        return -1;
+    }
+
+    return rc;
+}
diff -r f5c579127b26 tools/libxl/libxl.h
--- a/tools/libxl/libxl.h       Wed May 19 23:35:17 2010 +0800
+++ b/tools/libxl/libxl.h       Wed May 19 23:37:09 2010 +0800
@@ -517,5 +517,7 @@
 int libxl_tmem_freeze(struct libxl_ctx *ctx, uint32_t domid);
 int libxl_tmem_destroy(struct libxl_ctx *ctx, uint32_t domid);
 int libxl_tmem_thaw(struct libxl_ctx *ctx, uint32_t domid);
+int libxl_tmem_set(struct libxl_ctx *ctx, uint32_t domid, char* name,
+                   uint32_t set);
 #endif /* LIBXL_H */
 
diff -r f5c579127b26 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c  Wed May 19 23:35:17 2010 +0800
+++ b/tools/libxl/xl_cmdimpl.c  Wed May 19 23:37:09 2010 +0800
@@ -3822,3 +3822,64 @@
     exit(0);
 }
 
+int main_tmem_set(int argc, char **argv)
+{
+    char *dom = NULL;
+    uint32_t weight = 0, cap = 0, compress = 0;
+    int opt_w = 0, opt_c = 0, opt_p = 0;
+    int all = 0;
+    int opt;
+
+    while ((opt = getopt(argc, argv, "aw:c:p:h")) != -1) {
+        switch (opt) {
+        case 'a':
+            all = 1;
+            break;
+        case 'w':
+            weight = strtol(optarg, NULL, 10);
+            opt_w = 1;
+            break;
+        case 'c':
+            cap = strtol(optarg, NULL, 10);
+            opt_c = 1;
+            break;
+        case 'p':
+            compress = strtol(optarg, NULL, 10);
+            opt_p = 1;
+            break;
+        case 'h':
+            help("tmem-set");
+            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-set");
+        exit(1);
+    }
+
+    if (all)
+        domid = -1;
+    else
+        find_domain(dom);
+
+    if (!opt_w && !opt_c && !opt_p) {
+        fprintf(stderr, "No set value specified.\n\n");
+        help("tmem-set");
+        exit(1);
+    }
+
+    if (opt_w)
+        libxl_tmem_set(&ctx, domid, "weight", weight);
+    if (opt_c)
+        libxl_tmem_set(&ctx, domid, "cap", cap);
+    if (opt_p)
+        libxl_tmem_set(&ctx, domid, "compress", compress);
+
+    exit(0);
+}
diff -r f5c579127b26 tools/libxl/xl_cmdimpl.h
--- a/tools/libxl/xl_cmdimpl.h  Wed May 19 23:35:17 2010 +0800
+++ b/tools/libxl/xl_cmdimpl.h  Wed May 19 23:37:09 2010 +0800
@@ -56,6 +56,7 @@
 int main_tmem_freeze(int argc, char **argv);
 int main_tmem_destroy(int argc, char **argv);
 int main_tmem_thaw(int argc, char **argv);
+int main_tmem_set(int argc, char **argv);
 
 void help(char *command);
 
diff -r f5c579127b26 tools/libxl/xl_cmdtable.c
--- a/tools/libxl/xl_cmdtable.c Wed May 19 23:35:17 2010 +0800
+++ b/tools/libxl/xl_cmdtable.c Wed May 19 23:37:09 2010 +0800
@@ -248,6 +248,15 @@
       "[<Domain>|-a]",
       "  -a                             Thaw all tmem",
     },
+    { "tmem-set",
+      &main_tmem_set,
+      "Change tmem settings",
+      "[<Domain>|-a] [-w[=WEIGHT]|-c[=CAP]|-p[=COMPRESS]]",
+      "  -a                             Operate on all tmem\n"
+      "  -w WEIGHT                      Weight (int)\n"
+      "  -c CAP                         Cap (int)\n"
+      "  -p COMPRESS                    Compress (int)",
+    },
 };
 
 int cmdtable_len = sizeof(cmd_table)/sizeof(struct cmd_spec);

-- 
Regards
Yang Hongyang

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