Messages in this thread Patch in this message | | | Date | Sat, 10 Aug 2013 09:13:28 -0700 | From | tip-bot for Raghavendra K T <> | Subject | [tip:x86/spinlocks] x86, ticketlock: Don' t inline _spin_unlock when using paravirt spinlocks |
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Commit-ID: 8db732668a48e93d00d881517a08136e8fa71000 Gitweb: http://git.kernel.org/tip/8db732668a48e93d00d881517a08136e8fa71000 Author: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> AuthorDate: Fri, 9 Aug 2013 19:51:50 +0530 Committer: H. Peter Anvin <hpa@linux.intel.com> CommitDate: Fri, 9 Aug 2013 07:53:10 -0700
x86, ticketlock: Don't inline _spin_unlock when using paravirt spinlocks
The code size expands somewhat, and its better to just call a function rather than inline it.
Thanks Jeremy for original version of ARCH_NOINLINE_SPIN_UNLOCK config patch, which is simplified.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1376058122-8248-3-git-send-email-raghavendra.kt@linux.vnet.ibm.com Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index b32ebf9..112e712 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -632,6 +632,7 @@ config PARAVIRT_DEBUG config PARAVIRT_SPINLOCKS bool "Paravirtualization layer for spinlocks" depends on PARAVIRT && SMP + select UNINLINE_SPIN_UNLOCK ---help--- Paravirtualized spinlocks allow a pvops backend to replace the spinlock implementation with something virtualization-friendly
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