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/string.h>
  11 #include <linux/kernel.h>
  12 #include <linux/errno.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 struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS] = {
  26         [CTCM_DBF_SETUP]     = {"ctc_setup", 8, 1, 64, CTC_DBF_INFO, NULL},
  27         [CTCM_DBF_ERROR]     = {"ctc_error", 8, 1, 64, CTC_DBF_ERROR, NULL},
  28         [CTCM_DBF_TRACE]     = {"ctc_trace", 8, 1, 64, CTC_DBF_ERROR, NULL},
  29         [CTCM_DBF_MPC_SETUP] = {"mpc_setup", 8, 1, 80, CTC_DBF_INFO, NULL},
  30         [CTCM_DBF_MPC_ERROR] = {"mpc_error", 8, 1, 80, CTC_DBF_ERROR, NULL},
  31         [CTCM_DBF_MPC_TRACE] = {"mpc_trace", 8, 1, 80, CTC_DBF_ERROR, NULL},
  32 };
  33
  34 void ctcm_unregister_dbf_views(void)
  35 {
  36         int x;
  37         for (x = 0; x < CTCM_DBF_INFOS; x++) {
  38                 debug_unregister(ctcm_dbf[x].id);
  39                 ctcm_dbf[x].id = NULL;
  40         }
  41 }
  42
  43 int ctcm_register_dbf_views(void)
  44 {
  45         int x;
  46         for (x = 0; x < CTCM_DBF_INFOS; x++) {
  47                 /* register the areas */
  48                 ctcm_dbf[x].id = debug_register(ctcm_dbf[x].name,
  49                                                 ctcm_dbf[x].pages,
  50                                                 ctcm_dbf[x].areas,
  51                                                 ctcm_dbf[x].len);
  52                 if (ctcm_dbf[x].id == NULL) {
  53                         ctcm_unregister_dbf_views();
  54                         return -ENOMEM;
  55                 }
  56
  57                 /* register a view */
  58                 debug_register_view(ctcm_dbf[x].id, &debug_hex_ascii_view);
  59                 /* set a passing level */
  60                 debug_set_level(ctcm_dbf[x].id, ctcm_dbf[x].level);
  61         }
  62
  63         return 0;
  64 }
  65
  66 void ctcm_dbf_longtext(enum ctcm_dbf_names dbf_nix, int level, char *fmt, ...)
  67 {
  68         char dbf_txt_buf[64];
  69         va_list args;
  70
  71         if (level > (ctcm_dbf[dbf_nix].id)->level)
  72                 return;
  73         va_start(args, fmt);
  74         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
  75         va_end(args);
  76
  77         debug_text_event(ctcm_dbf[dbf_nix].id, level, dbf_txt_buf);
  78 }
  79