From: Mina Almasry <almasrymina@google.com>
To: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: linux-doc@vger.kernel.org,
Catalin Marinas <catalin.marinas@arm.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Linux-MM <linux-mm@kvack.org>, Paul Mackerras <paulus@samba.org>,
sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org,
Will Deacon <will@kernel.org>,
linux-s390@vger.kernel.org, Jonathan Corbet <corbet@lwn.net>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Ingo Molnar <mingo@redhat.com>, Longpeng <longpeng2@huawei.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Vasily Gorbik <gor@linux.ibm.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
open list <linux-kernel@vger.kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Andrew Morton <akpm@linux-foundation.org>,
linuxppc-dev@lists.ozlabs.org,
"David S . Miller" <davem@davemloft.net>,
Mike Kravetz <mike.kravetz@oracle.com>
Subject: Re: [PATCH 2/4] hugetlbfs: move hugepagesz= parsing to arch independent code
Date: Mon, 23 Mar 2020 16:56:43 -0700 [thread overview]
Message-ID: <CAHS8izOeYeVi-W7z-DKw3Uv0rAqwuD1__uTr-oF6Lx=V9ekm3g@mail.gmail.com> (raw)
In-Reply-To: <2ca058dc-47e6-1d08-154b-77d2cbe98e34@c-s.fr>
On Thu, Mar 19, 2020 at 12:04 AM Christophe Leroy
<christophe.leroy@c-s.fr> wrote:
>
>
>
> Le 18/03/2020 à 23:06, Mike Kravetz a écrit :
> > Now that architectures provide arch_hugetlb_valid_size(), parsing
> > of "hugepagesz=" can be done in architecture independent code.
> > Create a single routine to handle hugepagesz= parsing and remove
> > all arch specific routines. We can also remove the interface
> > hugetlb_bad_size() as this is no longer used outside arch independent
> > code.
> >
> > This also provides consistent behavior of hugetlbfs command line
> > options. The hugepagesz= option should only be specified once for
> > a specific size, but some architectures allow multiple instances.
> > This appears to be more of an oversight when code was added by some
> > architectures to set up ALL huge pages sizes.
> >
> > Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
> > ---
> > arch/arm64/mm/hugetlbpage.c | 15 ---------------
> > arch/powerpc/mm/hugetlbpage.c | 15 ---------------
> > arch/riscv/mm/hugetlbpage.c | 16 ----------------
> > arch/s390/mm/hugetlbpage.c | 18 ------------------
> > arch/sparc/mm/init_64.c | 22 ----------------------
> > arch/x86/mm/hugetlbpage.c | 16 ----------------
> > include/linux/hugetlb.h | 1 -
> > mm/hugetlb.c | 24 ++++++++++++++++++------
> > 8 files changed, 18 insertions(+), 109 deletions(-)
> >
>
> [snip]
>
> > diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> > index 2f99359b93af..cd4ec07080fb 100644
> > --- a/mm/hugetlb.c
> > +++ b/mm/hugetlb.c
> > @@ -3149,12 +3149,6 @@ static int __init hugetlb_init(void)
> > }
> > subsys_initcall(hugetlb_init);
> >
> > -/* Should be called on processing a hugepagesz=... option */
> > -void __init hugetlb_bad_size(void)
> > -{
> > - parsed_valid_hugepagesz = false;
> > -}
> > -
> > void __init hugetlb_add_hstate(unsigned int order)
> > {
> > struct hstate *h;
> > @@ -3224,6 +3218,24 @@ static int __init hugetlb_nrpages_setup(char *s)
> > }
> > __setup("hugepages=", hugetlb_nrpages_setup);
> >
> > +static int __init hugepagesz_setup(char *s)
> > +{
> > + unsigned long long size;
> > + char *saved_s = s;
> > +
> > + size = memparse(s, &s);
>
> You don't use s after that, so you can pass NULL instead of &s and avoid
> the saved_s
>
+1
Acked-by: Mina Almasry <almasrymina@google.com>
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next prev parent reply other threads:[~2020-03-23 23:56 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-18 22:06 [PATCH 0/4] Clean up hugetlb boot command line processing Mike Kravetz
2020-03-18 22:06 ` [PATCH 1/4] hugetlbfs: add arch_hugetlb_valid_size Mike Kravetz
2020-03-18 22:09 ` Will Deacon
2020-03-18 22:38 ` Mike Kravetz
2020-03-18 22:15 ` Dave Hansen
2020-03-18 22:52 ` Mike Kravetz
2020-03-18 23:36 ` Dave Hansen
2020-03-26 21:56 ` Mike Kravetz
2020-03-26 23:10 ` Dave Hansen
2020-03-25 2:58 ` Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
2020-03-25 9:38 ` Christian Borntraeger
2020-03-19 0:48 ` kbuild test robot
2020-03-19 1:39 ` kbuild test robot
2020-03-19 7:00 ` Christophe Leroy
2020-03-19 18:17 ` Mike Kravetz
2020-03-23 23:43 ` Mina Almasry
2020-03-18 22:06 ` [PATCH 2/4] hugetlbfs: move hugepagesz= parsing to arch independent code Mike Kravetz
2020-03-19 7:04 ` Christophe Leroy
2020-03-19 17:00 ` Mike Kravetz
2020-03-23 23:56 ` Mina Almasry [this message]
2020-03-18 22:06 ` [PATCH 3/4] hugetlbfs: remove hugetlb_add_hstate() warning for existing hstate Mike Kravetz
2020-03-24 0:01 ` Mina Almasry
2020-03-24 0:16 ` Mike Kravetz
2020-03-24 0:23 ` Mina Almasry
2020-03-18 22:06 ` [PATCH 4/4] hugetlbfs: clean up command line processing Mike Kravetz
2020-03-19 0:20 ` Randy Dunlap
2020-03-19 2:42 ` Mike Kravetz
2020-03-24 0:43 ` Mina Almasry
2020-03-24 3:47 ` Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
2020-03-25 1:12 ` Mike Kravetz
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