linux/drivers/s390/net/ctcm_dbug.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 *      Copyright IBM Corp. 2001, 2007
   4 *      Authors:        Peter Tiedemann (ptiedem@de.ibm.com)
   5 *
   6 */
   7
   8#include <linux/stddef.h>
   9#include <linux/string.h>
  10#include <linux/kernel.h>
  11#include <linux/errno.h>
  12#include <linux/ctype.h>
  13#include <linux/sysctl.h>
  14#include <linux/module.h>
  15#include <linux/init.h>
  16#include <linux/fs.h>
  17#include <linux/debugfs.h>
  18#include "ctcm_dbug.h"
  19
  20/*
  21 * Debug Facility Stuff
  22 */
  23
  24struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS] = {
  25        [CTCM_DBF_SETUP]     = {"ctc_setup", 8, 1, 64, CTC_DBF_INFO, NULL},
  26        [CTCM_DBF_ERROR]     = {"ctc_error", 8, 1, 64, CTC_DBF_ERROR, NULL},
  27        [CTCM_DBF_TRACE]     = {"ctc_trace", 8, 1, 64, CTC_DBF_ERROR, NULL},
  28        [CTCM_DBF_MPC_SETUP] = {"mpc_setup", 8, 1, 80, CTC_DBF_INFO, NULL},
  29        [CTCM_DBF_MPC_ERROR] = {"mpc_error", 8, 1, 80, CTC_DBF_ERROR, NULL},
  30        [CTCM_DBF_MPC_TRACE] = {"mpc_trace", 8, 1, 80, CTC_DBF_ERROR, NULL},
  31};
  32
  33void ctcm_unregister_dbf_views(void)
  34{
  35        int x;
  36        for (x = 0; x < CTCM_DBF_INFOS; x++) {
  37                debug_unregister(ctcm_dbf[x].id);
  38                ctcm_dbf[x].id = NULL;
  39        }
  40}
  41
  42int ctcm_register_dbf_views(void)
  43{
  44        int x;
  45        for (x = 0; x < CTCM_DBF_INFOS; x++) {
  46                /* register the areas */
  47                ctcm_dbf[x].id = debug_register(ctcm_dbf[x].name,
  48                                                ctcm_dbf[x].pages,
  49                                                ctcm_dbf[x].areas,
  50                                                ctcm_dbf[x].len);
  51                if (ctcm_dbf[x].id == NULL) {
  52                        ctcm_unregister_dbf_views();
  53                        return -ENOMEM;
  54                }
  55
  56                /* register a view */
  57                debug_register_view(ctcm_dbf[x].id, &debug_hex_ascii_view);
  58                /* set a passing level */
  59                debug_set_level(ctcm_dbf[x].id, ctcm_dbf[x].level);
  60        }
  61
  62        return 0;
  63}
  64
  65void ctcm_dbf_longtext(enum ctcm_dbf_names dbf_nix, int level, char *fmt, ...)
  66{
  67        char dbf_txt_buf[64];
  68        va_list args;
  69
  70        if (!debug_level_enabled(ctcm_dbf[dbf_nix].id, level))
  71                return;
  72        va_start(args, fmt);
  73        vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
  74        va_end(args);
  75
  76        debug_text_event(ctcm_dbf[dbf_nix].id, level, dbf_txt_buf);
  77}
  78
  79