drivers/s390/net/ctcm_dbug.c

   1 /*
   2  *      Copyright IBM Corp. 2001, 2007
   3  *      Authors:        Peter Tiedemann (ptiedem@de.ibm.com)
   4  *
   5  */
   6
   7 #include <linux/stddef.h>
   8 #include <linux/string.h>
   9 #include <linux/kernel.h>
  10 #include <linux/errno.h>
  11 #include <linux/ctype.h>
  12 #include <linux/sysctl.h>
  13 #include <linux/module.h>
  14 #include <linux/init.h>
  15 #include <linux/fs.h>
  16 #include <linux/debugfs.h>
  17 #include "ctcm_dbug.h"
  18
  19 /*
  20  * Debug Facility Stuff
  21  */
  22
  23 struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS] = {
  24         [CTCM_DBF_SETUP]     = {"ctc_setup", 8, 1, 64, CTC_DBF_INFO, NULL},
  25         [CTCM_DBF_ERROR]     = {"ctc_error", 8, 1, 64, CTC_DBF_ERROR, NULL},
  26         [CTCM_DBF_TRACE]     = {"ctc_trace", 8, 1, 64, CTC_DBF_ERROR, NULL},
  27         [CTCM_DBF_MPC_SETUP] = {"mpc_setup", 8, 1, 80, CTC_DBF_INFO, NULL},
  28         [CTCM_DBF_MPC_ERROR] = {"mpc_error", 8, 1, 80, CTC_DBF_ERROR, NULL},
  29         [CTCM_DBF_MPC_TRACE] = {"mpc_trace", 8, 1, 80, CTC_DBF_ERROR, NULL},
  30 };
  31
  32 void ctcm_unregister_dbf_views(void)
  33 {
  34         int x;
  35         for (x = 0; x < CTCM_DBF_INFOS; x++) {
  36                 debug_unregister(ctcm_dbf[x].id);
  37                 ctcm_dbf[x].id = NULL;
  38         }
  39 }
  40
  41 int ctcm_register_dbf_views(void)
  42 {
  43         int x;
  44         for (x = 0; x < CTCM_DBF_INFOS; x++) {
  45                 /* register the areas */
  46                 ctcm_dbf[x].id = debug_register(ctcm_dbf[x].name,
  47                                                 ctcm_dbf[x].pages,
  48                                                 ctcm_dbf[x].areas,
  49                                                 ctcm_dbf[x].len);
  50                 if (ctcm_dbf[x].id == NULL) {
  51                         ctcm_unregister_dbf_views();
  52                         return -ENOMEM;
  53                 }
  54
  55                 /* register a view */
  56                 debug_register_view(ctcm_dbf[x].id, &debug_hex_ascii_view);
  57                 /* set a passing level */
  58                 debug_set_level(ctcm_dbf[x].id, ctcm_dbf[x].level);
  59         }
  60
  61         return 0;
  62 }
  63
  64 void ctcm_dbf_longtext(enum ctcm_dbf_names dbf_nix, int level, char *fmt, ...)
  65 {
  66         char dbf_txt_buf[64];
  67         va_list args;
  68
  69         if (!debug_level_enabled(ctcm_dbf[dbf_nix].id, level))
  70                 return;
  71         va_start(args, fmt);
  72         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
  73         va_end(args);
  74
  75         debug_text_event(ctcm_dbf[dbf_nix].id, level, dbf_txt_buf);
  76 }
  77