Messages in this thread Patch in this message | | | Date | Sat, 26 Jul 2008 02:58:39 -0700 | From | Andrew Morton <> | Subject | Re: [patch] hugetlbfs: fix build failure on 64-bit x86 |
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On Sat, 26 Jul 2008 11:16:54 +0200 Ingo Molnar <mingo@elte.hu> wrote:
> > [resend, still relevant to -git] > > >From 5215af24a20e5f448ee45cd1d97c4118b876c0f6 Mon Sep 17 00:00:00 2001 > From: Ingo Molnar <mingo@elte.hu> > Date: Fri, 25 Jul 2008 20:45:52 +0200 > Subject: [PATCH] hugetlbfs: fix build failure on 64-bit x86 > > fix: > > arch/x86/mm/built-in.o: In function `setup_hugepagesz': > hugetlbpage.c:(.init.text+0xb49): undefined reference to `hugetlb_add_hstate' > > Signed-off-by: Ingo Molnar <mingo@elte.hu> > --- > arch/x86/mm/hugetlbpage.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c > index 8f307d9..977d185 100644 > --- a/arch/x86/mm/hugetlbpage.c > +++ b/arch/x86/mm/hugetlbpage.c > @@ -425,7 +425,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, > > #endif /*HAVE_ARCH_HUGETLB_UNMAPPED_AREA*/ > > -#ifdef CONFIG_X86_64 > +#if defined(CONFIG_X86_64) && defined(CONFIG_SYSCTL) > static __init int setup_hugepagesz(char *opt) > { > unsigned long ps = memparse(opt, &opt);
Seems wrong that a __setup handler would vanish if CONFIG_SYSCTL=n.
I think Nishanth's patch (sent to Linus a few hours ago) fixes this correctly, by making hugetlb_add_hstate available if CONFIG_SYSCTL=n:
From: Nishanth Aravamudan <nacc@us.ibm.com>
Fixes a build failure reported by Alan Cox:
mm/hugetlb.c: In function `hugetlb_acct_memory': mm/hugetlb.c:1507: error: implicit declaration of function `cpuset_mems_nr'
Also reverts Ingo's
commit e44d1b2998d62a1f2f4d7eb17b56ba396535509f Author: Ingo Molnar <mingo@elte.hu> Date: Fri Jul 25 12:57:41 2008 +0200
mm/hugetlb.c: fix build failure with !CONFIG_SYSCTL
which fixed the build error but added some unused-static-function warnings.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> ---
mm/hugetlb.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-)
diff -puN mm/hugetlb.c~hugetlb-fix-config_sysctl=n-build mm/hugetlb.c --- a/mm/hugetlb.c~hugetlb-fix-config_sysctl=n-build +++ a/mm/hugetlb.c @@ -1026,18 +1026,6 @@ static void __init report_hugepages(void } } -static unsigned int cpuset_mems_nr(unsigned int *array) -{ - int node; - unsigned int nr = 0; - - for_each_node_mask(node, cpuset_current_mems_allowed) - nr += array[node]; - - return nr; -} - -#ifdef CONFIG_SYSCTL #ifdef CONFIG_HIGHMEM static void try_to_free_low(struct hstate *h, unsigned long count) { @@ -1386,6 +1374,18 @@ static int __init hugetlb_default_setup( } __setup("default_hugepagesz=", hugetlb_default_setup); +static unsigned int cpuset_mems_nr(unsigned int *array) +{ + int node; + unsigned int nr = 0; + + for_each_node_mask(node, cpuset_current_mems_allowed) + nr += array[node]; + + return nr; +} + +#ifdef CONFIG_SYSCTL int hugetlb_sysctl_handler(struct ctl_table *table, int write, struct file *file, void __user *buffer, size_t *length, loff_t *ppos) _
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