kallsyms_lookup_name is not returning per_cpu symbols when called.
The symbols show up when you run something with the kallsyms_iter
struct but not through the regular interface. I have looked through
the code and I am not able to determine with certainty if its designed
this way or just busted. Any help with this would be appreciated.
The following code does display the per_cpu symbols, they just don't
seem to show up when called from kallsyms_lookup_name.
struct kallsym_iter mdb_iter;
int mdb_kallsyms(char *str, int (*print)(char *s, ...))
{
register loff_t pos = 0;
register struct kallsym_iter *iter = &mdb_iter;
if (!print)
return 0;
// set to beginning of the kallsyms list
reset_iter(iter, 0);
while (1)
{
// search the kallsyms list
if (!update_iter(iter, pos++))
break;
if (!iter->name[0])
continue;
// if an exclusion search was specified, skip non-matching entries
if (str && *str && !strstr(iter->name, str))
continue;
if (iter->module_name[0])
{
if (print("%0*lx %c %s [%s]\n", (int)(2*sizeof(void*)),
iter->value, iter->type, iter->name,
iter->module_name))
return 1;
}
else
{
if (print("%0*lx %c %s\n", (int)(2*sizeof(void*)),
iter->value, iter->type, iter->name))
return 1;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(mdb_kallsyms);
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