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authorStephen Rothwell <sfr@canb.auug.org.au>2023-11-27 05:28:09 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2023-11-27 14:07:08 +0300
commit0d555b57ee660d8a871781c0eebf006e855e918d (patch)
tree44b084d1dd3d426fccae692c141dfa1cae76416f /arch/powerpc/mm
parent8f9abaa6d7de0a70fc68acaedce290c1f96e2e59 (diff)
downloadlinux-0d555b57ee660d8a871781c0eebf006e855e918d.tar.xz
powerpc: pmd_move_must_withdraw() is only needed for CONFIG_TRANSPARENT_HUGEPAGE
The linux-next build of powerpc64 allnoconfig fails with: arch/powerpc/mm/book3s64/pgtable.c:557:5: error: no previous prototype for 'pmd_move_must_withdraw' 557 | int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl, | ^~~~~~~~~~~~~~~~~~~~~~ Caused by commit: c6345dfa6e3e ("Makefile.extrawarn: turn on missing-prototypes globally") Fix it by moving the function definition under CONFIG_TRANSPARENT_HUGEPAGE like the prototype. The function is only called when CONFIG_TRANSPARENT_HUGEPAGE=y. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> [mpe: Flesh out change log from linux-next patch] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231127132809.45c2b398@canb.auug.org.au
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/book3s64/pgtable.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c
index be229290a6a7..3438ab72c346 100644
--- a/arch/powerpc/mm/book3s64/pgtable.c
+++ b/arch/powerpc/mm/book3s64/pgtable.c
@@ -542,6 +542,7 @@ void ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr,
set_pte_at(vma->vm_mm, addr, ptep, pte);
}
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
/*
* For hash translation mode, we use the deposited table to store hash slot
* information and they are stored at PTRS_PER_PMD offset from related pmd
@@ -563,6 +564,7 @@ int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
return true;
}
+#endif
/*
* Does the CPU support tlbie?