ctcm_dbug.c

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/*
 *  Copyright IBM Corp. 2001, 2007
 *  Authors:    Peter Tiedemann ([email protected])
 *
 */

#include <linux/stddef.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/ctype.h>
#include <linux/sysctl.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/debugfs.h>
#include "ctcm_dbug.h"

/*
 * Debug Facility Stuff
 */

struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS] = {
    [CTCM_DBF_SETUP]     = {"ctc_setup", 8, 1, 64, CTC_DBF_INFO, NULL},
    [CTCM_DBF_ERROR]     = {"ctc_error", 8, 1, 64, CTC_DBF_ERROR, NULL},
    [CTCM_DBF_TRACE]     = {"ctc_trace", 8, 1, 64, CTC_DBF_ERROR, NULL},
    [CTCM_DBF_MPC_SETUP] = {"mpc_setup", 8, 1, 80, CTC_DBF_INFO, NULL},
    [CTCM_DBF_MPC_ERROR] = {"mpc_error", 8, 1, 80, CTC_DBF_ERROR, NULL},
    [CTCM_DBF_MPC_TRACE] = {"mpc_trace", 8, 1, 80, CTC_DBF_ERROR, NULL},
};

void ctcm_unregister_dbf_views(void)
{
    int x;
    for (x = 0; x < CTCM_DBF_INFOS; x++) {
        debug_unregister(ctcm_dbf[x].id);
        ctcm_dbf[x].id = NULL;
    }
}

int ctcm_register_dbf_views(void)
{
    int x;
    for (x = 0; x < CTCM_DBF_INFOS; x++) {
        /* register the areas */
        ctcm_dbf[x].id = debug_register(ctcm_dbf[x].name,
                        ctcm_dbf[x].pages,
                        ctcm_dbf[x].areas,
                        ctcm_dbf[x].len);
        if (ctcm_dbf[x].id == NULL) {
            ctcm_unregister_dbf_views();
            return -ENOMEM;
        }

        /* register a view */
        debug_register_view(ctcm_dbf[x].id, &debug_hex_ascii_view);
        /* set a passing level */
        debug_set_level(ctcm_dbf[x].id, ctcm_dbf[x].level);
    }

    return 0;
}

void ctcm_dbf_longtext(enum ctcm_dbf_names dbf_nix, int level, char *fmt, ...)
{
    char dbf_txt_buf[64];
    va_list args;

    if (level > (ctcm_dbf[dbf_nix].id)->level)
        return;
    va_start(args, fmt);
    vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
    va_end(args);

    debug_text_event(ctcm_dbf[dbf_nix].id, level, dbf_txt_buf);
}