On Wed, Mar 21, 2012 at 3:21 AM, Raghavendra K T
<raghavendra.kt@xxxxxxxxxxxxxxxxxx> wrote:
> From: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
>
> The code size expands somewhat, and its probably better to just call
> a function rather than inline it.
>
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
> Signed-off-by: Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>
> ---
> arch/x86/Kconfig | 3 +++
> kernel/Kconfig.locks | 2 +-
> 2 files changed, 4 insertions(+), 1 deletions(-)
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 5bed94e..10c28ec 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -623,6 +623,9 @@ config PARAVIRT_SPINLOCKS
>
> If you are unsure how to answer this question, answer N.
>
> +config ARCH_NOINLINE_SPIN_UNLOCK
> + def_bool PARAVIRT_SPINLOCKS
> +
> config PARAVIRT_CLOCK
> bool
>
> diff --git a/kernel/Kconfig.locks b/kernel/Kconfig.locks
> index 5068e2a..584637b 100644
> --- a/kernel/Kconfig.locks
> +++ b/kernel/Kconfig.locks
> @@ -125,7 +125,7 @@ config INLINE_SPIN_LOCK_IRQSAVE
> ARCH_INLINE_SPIN_LOCK_IRQSAVE
>
> config INLINE_SPIN_UNLOCK
> - def_bool !DEBUG_SPINLOCK && (!PREEMPT || ARCH_INLINE_SPIN_UNLOCK)
> + def_bool !DEBUG_SPINLOCK && (!PREEMPT || ARCH_INLINE_SPIN_UNLOCK) && !ARCH_NOINLINE_SPIN_UNLOCK
>
> config INLINE_SPIN_UNLOCK_BH
> def_bool !DEBUG_SPINLOCK && ARCH_INLINE_SPIN_UNLOCK_BH
Ugh. This is getting really ugly.
Can we just fix it by
- getting rid of INLINE_SPIN_UNLOCK entirely
- replacing it with UNINLINE_SPIN_UNLOCK instead with the reverse
meaning, and no "def_bool" at all, just a simple
config UNINLINE_SPIN_UNLOCK
bool
- make the various people who want to uninline the spinlocks (like
spinlock debugging, paravirt etc) all just do
select UNINLINE_SPIN_UNLOCK
because quite frankly, the whole spinunlock inlining logic is
*already* unreadable, and you just made it worse.
Linus
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