[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 <[EMAIL PROTECTED]> CC: Nick Piggin <[EMAIL PROTECTED]> --- 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 [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[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 [EMAIL PROTECTED] CC: Nick Piggin [EMAIL PROTECTED] --- 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 [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/