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powerpc: Rely on generic definition of hugepd_t and is_hugepd when unused

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CONFIG_ARCH_HAS_HUGEPD is used to tell core mm when huge page
directories are used.

When they are not used, no need to provide hugepd_t or is_hugepd(),
just rely on the core mm fallback definition.

For that, change core mm behaviour so that CONFIG_ARCH_HAS_HUGEPD
is used instead of indirect is_hugepd macro existence.

powerpc being the only user of huge page directories, there is no
impact on other architectures.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/da81462d93069bb90fe5e762dd3283a644318937.1662543243.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2022-09-07 11:34:45 +02:00 • committed by Michael Ellerman
parent a26494cf4a
commit 691cdf016d
4 changed files with 5 additions and 6 deletions
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2
include/linux/hugetlb.h
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@ -17,7 +17,7 @@ struct ctl_table;
struct user_struct;
struct mmu_gather;
#ifndef is_hugepd
#ifndef CONFIG_ARCH_HAS_HUGEPD
typedef struct { unsigned long pd; } hugepd_t;
#define is_hugepd(hugepd) (0)
#define __hugepd(x) ((hugepd_t) { (x) })