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Message-ID: <10494441-fcc3-a01b-4f95-ce39dc1e2dd3@c-s.fr> Date: Tue, 26 Mar 2019 07:13:15 +0100 From: Christophe Leroy <christophe.leroy@....fr> To: Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...ba.org>, Michael Ellerman <mpe@...erman.id.au> Cc: linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 3/7] powerpc/setup: define cpu_pvr at all time Le 22/03/2019 à 09:08, Christophe Leroy a écrit : > To avoid ifdefs, define cpu_pvr at all time. > > Signed-off-by: Christophe Leroy <christophe.leroy@....fr> This patch introduces a sparse warning. I guess we can skip it for now and rework more deeply the use of cpu_pvr versus SPRN_PVR which is re-read in many places in the code. Christophe > --- > arch/powerpc/kernel/setup-common.c | 12 +++++------- > 1 file changed, 5 insertions(+), 7 deletions(-) > > diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c > index a90e8367ccde..a4ed9301e815 100644 > --- a/arch/powerpc/kernel/setup-common.c > +++ b/arch/powerpc/kernel/setup-common.c > @@ -190,9 +190,7 @@ void machine_halt(void) > machine_hang(); > } > > -#ifdef CONFIG_SMP > DEFINE_PER_CPU(unsigned int, cpu_pvr); > -#endif > > static void show_cpuinfo_summary(struct seq_file *m) > { > @@ -234,11 +232,11 @@ static int show_cpuinfo(struct seq_file *m, void *v) > unsigned short maj; > unsigned short min; > > -#ifdef CONFIG_SMP > - pvr = per_cpu(cpu_pvr, cpu_id); > -#else > - pvr = mfspr(SPRN_PVR); > -#endif > + if (IS_ENABLED(CONFIG_SMP)) > + pvr = per_cpu(cpu_pvr, cpu_id); > + else > + pvr = mfspr(SPRN_PVR); > + > maj = (pvr >> 8) & 0xFF; > min = pvr & 0xFF; > >
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