drivers/s390/net/ctcm_dbug.c

   1 /*
   2  *      drivers/s390/net/ctcm_dbug.c
   3  *
   4  *      Copyright IBM Corp. 2001, 2007
   5  *      Authors:        Peter Tiedemann (ptiedem@de.ibm.com)
   6  *
   7  */
   8
   9 #include <linux/stddef.h>
  10 #include <linux/kernel.h>
  11 #include <linux/errno.h>
  12 #include <linux/slab.h>
  13 #include <linux/ctype.h>
  14 #include <linux/sysctl.h>
  15 #include <linux/module.h>
  16 #include <linux/init.h>
  17 #include <linux/fs.h>
  18 #include <linux/debugfs.h>
  19 #include "ctcm_dbug.h"
  20
  21 /*
  22  * Debug Facility Stuff
  23  */
  24
  25 DEFINE_PER_CPU(char[256], ctcm_dbf_txt_buf);
  26
  27 struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS] = {
  28         [CTCM_DBF_SETUP]        = {"ctc_setup", 8, 1, 64, 5, NULL},
  29         [CTCM_DBF_ERROR]        = {"ctc_error", 8, 1, 64, 3, NULL},
  30         [CTCM_DBF_TRACE]        = {"ctc_trace", 8, 1, 64, 3, NULL},
  31         [CTCM_DBF_MPC_SETUP]    = {"mpc_setup", 8, 1, 64, 5, NULL},
  32         [CTCM_DBF_MPC_ERROR]    = {"mpc_error", 8, 1, 64, 3, NULL},
  33         [CTCM_DBF_MPC_TRACE]    = {"mpc_trace", 8, 1, 64, 3, NULL},
  34 };
  35
  36 void ctcm_unregister_dbf_views(void)
  37 {
  38         int x;
  39         for (x = 0; x < CTCM_DBF_INFOS; x++) {
  40                 debug_unregister(ctcm_dbf[x].id);
  41                 ctcm_dbf[x].id = NULL;
  42         }
  43 }
  44
  45 int ctcm_register_dbf_views(void)
  46 {
  47         int x;
  48         for (x = 0; x < CTCM_DBF_INFOS; x++) {
  49                 /* register the areas */
  50                 ctcm_dbf[x].id = debug_register(ctcm_dbf[x].name,
  51                                                 ctcm_dbf[x].pages,
  52                                                 ctcm_dbf[x].areas,
  53                                                 ctcm_dbf[x].len);
  54                 if (ctcm_dbf[x].id == NULL) {
  55                         ctcm_unregister_dbf_views();
  56                         return -ENOMEM;
  57                 }
  58
  59                 /* register a view */
  60                 debug_register_view(ctcm_dbf[x].id, &debug_hex_ascii_view);
  61                 /* set a passing level */
  62                 debug_set_level(ctcm_dbf[x].id, ctcm_dbf[x].level);
  63         }
  64
  65         return 0;
  66 }
  67