From mboxrd@z Thu Jan 1 00:00:00 1970 From: dhylands@gmail.com (Dave Hylands) Date: Mon, 20 Jun 2011 00:44:16 -0700 Subject: Problems with semaphores, mutexes, and atomic? In-Reply-To: References: Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Saeed, On Mon, Jun 20, 2011 at 12:20 AM, saeed bishara wrote: > On Mon, Jun 20, 2011 at 9:39 AM, Dave Hylands wrote: >> Hi, >> >> I wrote a small test module to test semaphores, mutexes and atomic >> increments, and I've tested it with CONFIG_SMP=y with 1 and 2 >> processors and with CONFIG_SMP disabled. >> >> My test code can be found here: >> http://svn.hylands.org/linux/test-mutex/test-mutex.c >> (it's about 133 lines long). > yout code is not complete, the DEFINE_SEMAPHORE and DEFINE_SEMAPHORE > definitions are missing I don't follow. Line 7 & 8 has DEFINE_MUTEX( lock ); DEFINE_SEMAPHORE( sem_lock ); and line 19 has DEFINE_SEMAPHORE( thread_wait ); -- Dave Hylands Shuswap, BC, Canada http://www.davehylands.com