Messages in this thread |  | | Date | Sat, 11 Apr 2015 15:16:06 -0300 | Subject | Re: Problems exporting symbols from the main kernel to a module | From | Eduardo Cruz <> |
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I solved the issue. Nevermind.
2015-04-11 12:53 GMT-03:00 Eduardo Cruz <eduardohmdacruz@gmail.com>: > I am modifying the kernel to provide some statistics about memory usage. > For that, part of my code is added in the main kernel, and part is in a module. > > The kernel version is 2.6.32. > The target machine is an ia64 machine. > Newer kernels do not boot the machine. > I'm using a debian distribution. > > In the main kernel, in arch/ia64/mm/fault.c, I added the following > function pointer: > > void (*module_task_added)(struct task_struct *) = NULL; > EXPORT_SYMBOL(module_task_added); > > In the module, i have: > > extern void (*module_task_added)(struct task_struct *); > > void handler_func (struct task_struct *task) { > ... > } > > int init_module () { > module_task_added = handler_func; > } > > when I compile the module, i get the following warning: > > WARNING: "module_task_added" > [/home/ehmcruz/linux-tammu/tammu-module/tammu.ko] undefined! > > > when I try to load the module, it fails resolving the symbol module_task_added: > > [ 3306.496239] tammu: Unknown symbol module_task_added > > > I already verified that the symbol is present in /proc/kallsyms: > > a000000100ac1b78 S module_task_added > > however, I don't know why, the variable doesn't appear in Module.symvers > > Anyone can help me? > > thanks in advance > > -- > Eduardo Henrique Molina da Cruz > PhD student > Parallel and Distributed Processing Group > Federal University of Rio Grande do Sul (UFRGS)
-- Eduardo Henrique Molina da Cruz PhD student Parallel and Distributed Processing Group Federal University of Rio Grande do Sul (UFRGS)
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