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Message-ID: <CANBLGczYBaxES12eCurm6fELat0U-9+VbuKUG_Fea3iK6d9RVA@mail.gmail.com>
Date: Sun, 28 Nov 2021 18:56:51 +0100
From: Emil Renner Berthing <emil.renner.berthing@...il.com>
To: Yury Norov <yury.norov@...il.com>
Cc: Joe Perches <joe@...ches.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
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Subject: Re: [PATCH 7/9] lib/cpumask: add num_{possible,present,active}_cpus_{eq,gt,le}
On Sun, 28 Nov 2021 at 18:43, Yury Norov <yury.norov@...il.com> wrote:
> On Sun, Nov 28, 2021 at 09:07:52AM -0800, Joe Perches wrote:
> > On Sat, 2021-11-27 at 19:57 -0800, Yury Norov wrote:
> > > Add num_{possible,present,active}_cpus_{eq,gt,le} and replace num_*_cpus()
> > > with one of new functions where appropriate. This allows num_*_cpus_*()
> > > to return earlier depending on the condition.
> > []
> > > diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
> > []
> > > @@ -103,7 +103,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
> > > * if platform didn't set the present map already, do it now
> > > * boot cpu is set to present already by init/main.c
> > > */
> > > - if (num_present_cpus() <= 1)
> > > + if (num_present_cpus_le(2))
> > > init_cpu_present(cpu_possible_mask);
> >
> > ? is this supposed to be 2 or 1
>
> X <= 1 is the equivalent of X < 2.
Ah, then the function is confusing. Usually it's lt = less than and lt
= less than or equal. Same idea for gt vs ge.
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