LU-8769 lnet: removal of obsolete LNDs

[fs/lustre-release.git] / libcfs / libcfs / module.c

diff --git a/libcfs/libcfs/module.c b/libcfs/libcfs/module.c
index a3c3ea2..e8080f3 100644 (file)
--- a/libcfs/libcfs/module.c
+++ b/libcfs/libcfs/module.c
@@ -463,6 +463,55 @@ proc_cpt_table(struct ctl_table *table, int write, void __user *buffer,
                                    __proc_cpt_table);
 }
 
+static int __proc_cpt_distance(void *data, int write,
+                              loff_t pos, void __user *buffer, int nob)
+{
+       char *buf = NULL;
+       int   len = 4096;
+       int   rc  = 0;
+
+       if (write)
+               return -EPERM;
+
+       LASSERT(cfs_cpt_table != NULL);
+
+       while (1) {
+               LIBCFS_ALLOC(buf, len);
+               if (buf == NULL)
+                       return -ENOMEM;
+
+               rc = cfs_cpt_distance_print(cfs_cpt_table, buf, len);
+               if (rc >= 0)
+                       break;
+
+               if (rc == -EFBIG) {
+                       LIBCFS_FREE(buf, len);
+                       len <<= 1;
+                       continue;
+               }
+               goto out;
+       }
+
+       if (pos >= rc) {
+               rc = 0;
+               goto out;
+       }
+
+       rc = cfs_trace_copyout_string(buffer, nob, buf + pos, NULL);
+ out:
+       if (buf != NULL)
+               LIBCFS_FREE(buf, len);
+       return rc;
+}
+
+static int
+proc_cpt_distance(struct ctl_table *table, int write, void __user *buffer,
+              size_t *lenp, loff_t *ppos)
+{
+       return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
+                                    __proc_cpt_distance);
+}
+
 static struct ctl_table lnet_table[] = {
        /*
         * NB No .strategy entries have been provided since sysctl(8) prefers
@@ -538,11 +587,10 @@ static struct ctl_table lnet_table[] = {
        },
        {
                INIT_CTL_NAME
-               .procname       = "upcall",
-               .data           = lnet_upcall,
-               .maxlen         = sizeof(lnet_upcall),
-               .mode           = 0644,
-               .proc_handler   = &proc_dostring,
+               .procname       = "cpu_partition_distance",
+               .maxlen         = 128,
+               .mode           = 0444,
+               .proc_handler   = &proc_cpt_distance,
        },
        {
                INIT_CTL_NAME