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Message-Id: <20141027.155656.1414383076601514662.davem@davemloft.net> Date: Mon, 27 Oct 2014 15:56:56 -0400 (EDT) From: David Miller <davem@...emloft.net> To: dvhart@...ux.intel.com CC: linux-kernel@...r.kernel.org Subject: futex testsuite suggestion... First of all, thanks so much for writing your futex test suite, it's proved invaluable for sparc64 kernel development for me lately. I'd like to suggest that you add a test that triggers transparent hugepages, because if an architecture doesn't implement __get_user_pages_fast() such futexes cause a machine to hang. I hacked up something simple that took the existing performance test and made it operate in a register allocated using memalign(). I would suggest doing a memalign(HUGEPAGE_SIZE, HUGEPAGE_SIZE) then iterating running a futex test within each normal page within that hugepage. 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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