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/slab.h>
  14 #include <linux/ctype.h>
  15 #include <linux/sysctl.h>
  16 #include <linux/module.h>
  17 #include <linux/init.h>
  18 #include <linux/fs.h>
  19 #include <linux/debugfs.h>
  20 #include "ctcm_dbug.h"
  21
  22 /*
  23  * Debug Facility Stuff
  24  */
  25
  26 struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS] = {
  27         [CTCM_DBF_SETUP]     = {"ctc_setup", 8, 1, 64, CTC_DBF_INFO, NULL},
  28         [CTCM_DBF_ERROR]     = {"ctc_error", 8, 1, 64, CTC_DBF_ERROR, NULL},
  29         [CTCM_DBF_TRACE]     = {"ctc_trace", 8, 1, 64, CTC_DBF_ERROR, NULL},
  30         [CTCM_DBF_MPC_SETUP] = {"mpc_setup", 8, 1, 80, CTC_DBF_INFO, NULL},
  31         [CTCM_DBF_MPC_ERROR] = {"mpc_error", 8, 1, 80, CTC_DBF_ERROR, NULL},
  32         [CTCM_DBF_MPC_TRACE] = {"mpc_trace", 8, 1, 80, CTC_DBF_ERROR, NULL},
  33 };
  34
  35 void ctcm_unregister_dbf_views(void)
  36 {
  37         int x;
  38         for (x = 0; x < CTCM_DBF_INFOS; x++) {
  39                 debug_unregister(ctcm_dbf[x].id);
  40                 ctcm_dbf[x].id = NULL;
  41         }
  42 }
  43
  44 int ctcm_register_dbf_views(void)
  45 {
  46         int x;
  47         for (x = 0; x < CTCM_DBF_INFOS; x++) {
  48                 /* register the areas */
  49                 ctcm_dbf[x].id = debug_register(ctcm_dbf[x].name,
  50                                                 ctcm_dbf[x].pages,
  51                                                 ctcm_dbf[x].areas,
  52                                                 ctcm_dbf[x].len);
  53                 if (ctcm_dbf[x].id == NULL) {
  54                         ctcm_unregister_dbf_views();
  55                         return -ENOMEM;
  56                 }
  57
  58                 /* register a view */
  59                 debug_register_view(ctcm_dbf[x].id, &debug_hex_ascii_view);
  60                 /* set a passing level */
  61                 debug_set_level(ctcm_dbf[x].id, ctcm_dbf[x].level);
  62         }
  63
  64         return 0;
  65 }
  66
  67 void ctcm_dbf_longtext(enum ctcm_dbf_names dbf_nix, int level, char *fmt, ...)
  68 {
  69         char dbf_txt_buf[64];
  70         va_list args;
  71
  72         if (level > (ctcm_dbf[dbf_nix].id)->level)
  73                 return;
  74         va_start(args, fmt);
  75         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
  76         va_end(args);
  77
  78         debug_text_event(ctcm_dbf[dbf_nix].id, level, dbf_txt_buf);
  79 }
  80