linux-kernel - Re: [PATCH v2 09/24] mips/cpu: Expose play

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Date:   Tue, 14 Feb 2023 10:11:01 -0800
From:   Josh Poimboeuf <jpoimboe@...nel.org>
To:     Philippe Mathieu-Daudé <philmd@...aro.org>
Cc:     linux-kernel@...r.kernel.org, jgross@...e.com,
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Subject: Re: [PATCH v2 09/24] mips/cpu: Expose play_dead()'s prototype
 definition

On Tue, Feb 14, 2023 at 08:46:41AM +0100, Philippe Mathieu-Daudé wrote:
> Hi Josh,
> 
> On 14/2/23 08:05, Josh Poimboeuf wrote:
> > Include <asm/smp.h> to make sure play_dead() matches its prototype going
> > forward.
> > 
> > Acked-by: Florian Fainelli <f.fainelli@...il.com>
> > Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
> > ---
> >   arch/mips/kernel/smp-bmips.c | 1 +
> >   1 file changed, 1 insertion(+)
> > 
> > diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
> > index f5d7bfa3472a..df9158e8329d 100644
> > --- a/arch/mips/kernel/smp-bmips.c
> > +++ b/arch/mips/kernel/smp-bmips.c
> > @@ -38,6 +38,7 @@
> >   #include <asm/traps.h>
> >   #include <asm/barrier.h>
> >   #include <asm/cpu-features.h>
> > +#include <asm/smp.h>
> 
> What about the other implementations?
> 
> $ git grep -L asm/smp.h $(git grep -wlF 'play_dead(void)' arch/mips)
> arch/mips/cavium-octeon/smp.c
> arch/mips/kernel/smp-bmips.c
> arch/mips/kernel/smp-cps.c
> arch/mips/loongson64/smp.c

Indeed.  I really wish we had -Wmissing-prototypes.

I'll squash this in:

diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index 89954f5f87fb..4212584e6efa 100644
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -20,6 +20,7 @@
 #include <asm/mmu_context.h>
 #include <asm/time.h>
 #include <asm/setup.h>
+#include <asm/smp.h>
 
 #include <asm/octeon/octeon.h>
 
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index bcd6a944b839..6d69a9ba8167 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -20,6 +20,7 @@
 #include <asm/mipsregs.h>
 #include <asm/pm-cps.h>
 #include <asm/r4kcache.h>
+#include <asm/smp.h>
 #include <asm/smp-cps.h>
 #include <asm/time.h>
 #include <asm/uasm.h>
diff --git a/arch/mips/loongson64/smp.c b/arch/mips/loongson64/smp.c
index c81c2bd07c62..df8d789ede3c 100644
--- a/arch/mips/loongson64/smp.c
+++ b/arch/mips/loongson64/smp.c
@@ -14,6 +14,7 @@
 #include <linux/cpufreq.h>
 #include <linux/kexec.h>
 #include <asm/processor.h>
+#include <asm/smp.h>
 #include <asm/time.h>
 #include <asm/tlbflush.h>
 #include <asm/cacheflush.h>