Messages in this thread | | | Date | Wed, 14 Nov 2007 12:35:13 +0800 | From | Jerry Jiang <> | Subject | [LOCK] Is it really necessary to use a "big module lock"? |
| |
Hi all,
I came across a question when review other's module code.
something like:
int __init module_init() { down_interruptible(the_big_module_sem); // code for init... up(the_big_module_sem); }
void __exit module_exit() { down_interruptible(the_big_module_sem); // code for exit... up(the_big_module_sem); }
My question is: - Is the lock truly necessary? - If adding it into code, what happens?
Thank you -- Jerry - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |