* Returns 0 on success, <0 on error.
*/
static int ddebug_parse_query(char *words[], int nwords,
- struct ddebug_query *query)
+ struct ddebug_query *query, const char *modname)
{
unsigned int i;
int rc;
return -EINVAL;
memset(query, 0, sizeof(*query));
+ if (modname)
+ /* support $modname.dyndbg=<multiple queries> */
+ query->module = modname;
+
for (i = 0 ; i < nwords ; i += 2) {
if (!strcmp(words[i], "func"))
rc = check_set(&query->function, words[i+1], "func");
return 0;
}
-static int ddebug_exec_query(char *query_string)
+static int ddebug_exec_query(char *query_string, const char *modname)
{
unsigned int flags = 0, mask = 0;
struct ddebug_query query;
nwords = ddebug_tokenize(query_string, words, MAXWORDS);
if (nwords <= 0)
return -EINVAL;
- if (ddebug_parse_query(words, nwords-1, &query))
+ if (ddebug_parse_query(words, nwords-1, &query, modname))
return -EINVAL;
if (ddebug_parse_flags(words[nwords-1], &flags, &mask))
return -EINVAL;
last error or number of matching callsites. Module name is either
in param (for boot arg) or perhaps in query string.
*/
-static int ddebug_exec_queries(char *query)
+static int ddebug_exec_queries(char *query, const char *modname)
{
char *split;
int i, errs = 0, exitcode = 0, rc, nfound = 0;
vpr_info("query %d: \"%s\"\n", i, query);
- rc = ddebug_exec_query(query);
+ rc = ddebug_exec_query(query, modname);
if (rc < 0) {
errs++;
exitcode = rc;
tmpbuf[len] = '\0';
vpr_info("read %d bytes from userspace\n", (int)len);
- ret = ddebug_exec_queries(tmpbuf);
+ ret = ddebug_exec_queries(tmpbuf, NULL);
kfree(tmpbuf);
if (ret < 0)
return ret;
if (strcmp(param, "dyndbg"))
return on_err; /* determined by caller */
- ddebug_exec_queries(val ? val : "+p");
+ ddebug_exec_queries((val ? val : "+p"), modname);
+
return 0; /* query failure shouldnt stop module load */
}
const char *modname = NULL;
char *cmdline;
int ret = 0;
- int n = 0;
+ int n = 0, entries = 0, modct = 0;
+ int verbose_bytes = 0;
if (__start___verbose == __stop___verbose) {
pr_warn("_ddebug table is empty in a "
modname = iter->modname;
iter_start = iter;
for (; iter < __stop___verbose; iter++) {
+ entries++;
+ verbose_bytes += strlen(iter->modname) + strlen(iter->function)
+ + strlen(iter->filename) + strlen(iter->format);
+
if (strcmp(modname, iter->modname)) {
+ modct++;
ret = ddebug_add_module(iter_start, n, modname);
if (ret)
- goto out_free;
+ goto out_err;
n = 0;
modname = iter->modname;
iter_start = iter;
}
ret = ddebug_add_module(iter_start, n, modname);
if (ret)
- goto out_free;
+ goto out_err;
+
+ ddebug_init_success = 1;
+ vpr_info("%d modules, %d entries and %d bytes in ddebug tables,"
+ " %d bytes in (readonly) verbose section\n",
+ modct, entries, (int)( modct * sizeof(struct ddebug_table)),
+ verbose_bytes + (int)(__stop___verbose - __start___verbose));
- /* ddebug_query boot param got passed -> set it up */
+ /* apply ddebug_query boot param, dont unload tables on err */
if (ddebug_setup_string[0] != '\0') {
pr_warn("ddebug_query param name is deprecated,"
" change it to dyndbg\n");
- ret = ddebug_exec_queries(ddebug_setup_string);
+ ret = ddebug_exec_queries(ddebug_setup_string, NULL);
if (ret < 0)
pr_warn("Invalid ddebug boot param %s",
ddebug_setup_string);
else
pr_info("%d changes by ddebug_query\n", ret);
-
- /* keep tables even on ddebug_query parse error */
- ret = 0;
}
/* now that ddebug tables are loaded, process all boot args
* again to find and activate queries given in dyndbg params.
parse_args("dyndbg params", cmdline, NULL,
0, 0, 0, &ddebug_dyndbg_boot_param_cb);
kfree(cmdline);
+ return 0;
-out_free:
- if (ret)
- ddebug_remove_all_tables();
- else
- ddebug_init_success = 1;
+out_err:
+ ddebug_remove_all_tables();
return 0;
}
/* Allow early initialization for boot messages via boot param */
-arch_initcall(dynamic_debug_init);
+early_initcall(dynamic_debug_init);
/* Debugfs setup must be done later */
-module_init(dynamic_debug_init_debugfs);
+fs_initcall(dynamic_debug_init_debugfs);