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Date: Mon, 11 Nov 2013 09:08:15 -0500 From: Josh Boyer <jwboyer@...hat.com> To: Ingo Molnar <mingo@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com> Cc: x86@...nel.org, Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org Subject: [PATCH] lib/cpumask: Make CPUMASK_OFFSTACK usable without debug dependency When CPUMASK_OFFSTACK was added in 2008, it was dependent upon DEBUG_PER_CPU_MAPS being enabled, or an architecture could select it. The debug dependency adds additional overhead that isn't required for operation of the feature, and we need CPUMASK_OFFSTACK to increase the NR_CPUS value beyond 512 on x86. We drop the current dependency and make sure SMP is set. Signed-off-by: Josh Boyer <jwboyer@...oraproject.org> --- lib/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/Kconfig b/lib/Kconfig index b3c8be0..50b47cd 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -342,7 +342,8 @@ config CHECK_SIGNATURE bool config CPUMASK_OFFSTACK - bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS + bool "Force CPU masks off stack" + depends on SMP help Use dynamic allocation for cpumask_var_t, instead of putting them on the stack. This is a bit more expensive, but avoids -- 1.8.3.1 -- 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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