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Message-Id: <20141124.170723.349362016189517646.davem@davemloft.net> Date: Mon, 24 Nov 2014 17:07:23 -0500 (EST) From: David Miller <davem@...emloft.net> To: dvhart@...radead.org Cc: dvhart@...ux.intel.com, linux-kernel@...r.kernel.org Subject: Re: futex testsuite suggestion... From: Darren Hart <dvhart@...radead.org> Date: Sat, 22 Nov 2014 00:02:39 -0800 > From your suggestion I put together a simple transparent hugepage functional > test. See the "thp" branch, functional/futex_wait_thp.c. > > I'd like your thoughts on if this functions as desired. Is the simple single > threaded timeout sufficient, or would you prefer to see a waiter/waker pair of > threads for each iteration? > > Some TODOs still: > > I wasn't sure if there was a way to test for hugepagesize and my quick search > didn't reveal anything (other than /proc/meminfo). > > Check at runtime if the test is getting a huge page, otherwise it just reports > success, but used several regular pages instead. This looks excellent! I did a test run on my sparc64 box and it passed as well. I do not thinks thread waiter/waker pairs are necessary for this test. And indeed I do not know of any way other than /proc/meminfo to test for this. Perhaps there are some tricks in the LTP testsuite? Thanks! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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