Commit-ID: 9dd1220114e00d8ec5cdc20085bbe198b21e1985 Gitweb: http://git.kernel.org/tip/9dd1220114e00d8ec5cdc20085bbe198b21e1985 Author: Josh Boyer <jwbo...@redhat.com> AuthorDate: Mon, 11 Nov 2013 09:08:15 -0500 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 13 Nov 2013 00:45:50 +0100
smp/cpumask: Make CONFIG_CPUMASK_OFFSTACK=y usable without debug dependency When CONFIG_CPUMASK_OFFSTACK was added in 2008, it was dependent upon CONFIG_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 which is undesirable for distro kernels. CONFIG_CPUMASK_OFFSTACK=y is needed to increase the CONFIG_NR_CPUS value beyond 512 on x86. So drop the current dependency, its only real dependency is CONFIG_SMP=y. Signed-off-by: Josh Boyer <jwbo...@fedoraproject.org> Cc: Rusty Russell <ru...@rustcorp.com.au> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijls...@chello.nl> Link: http://lkml.kernel.org/r/20131111140815.gb20...@hansolo.jdub.homelinux.org Signed-off-by: Ingo Molnar <mi...@kernel.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
