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Date: Thu, 21 Feb 2008 10:26:46 -0500 From: Gregory Haskins <ghaskins@...ell.com> To: mingo@...e.hu, a.p.zijlstra@...llo.nl, tglx@...utronix.de, rostedt@...dmis.org, linux-rt-users@...r.kernel.org Cc: linux-kernel@...r.kernel.org, bill.huey@...il.com, kevin@...man.org, cminyard@...sta.com, dsingleton@...sta.com, dwalker@...sta.com, npiggin@...e.de, dsaxena@...xity.net, ak@...e.de, gregkh@...e.de, sdietrich@...ell.com, pmorreale@...ell.com, mkohari@...ell.com, ghaskins@...ell.com Subject: [PATCH [RT] 04/14] disable PREEMPT_SPINLOCK_WAITERS when x86 ticket/fifo spins are in use Preemptible spinlock waiters effectively bypasses the benefits of a fifo spinlock. Since we now have fifo spinlocks for x86 enabled, disable the preemption feature on x86. Signed-off-by: Gregory Haskins <ghaskins@...ell.com> CC: Nick Piggin <npiggin@...e.de> --- arch/x86/Kconfig | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 8d15667..d5b9a67 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -20,6 +20,7 @@ config X86 bool default y select HAVE_MCOUNT + select DISABLE_PREEMPT_SPINLOCK_WAITERS config GENERIC_TIME bool -- 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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