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asm-generic: cleanups for 6.3

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Only three minor changes: a cross-platform series from Mike Rapoport to
 consolidate asm/agp.h between architectures, and a correctness change
 for __generic_cmpxchg_local() from Matt Evans.
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Merge tag 'asm-generic-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic cleanups from Arnd Bergmann:
 "Only three minor changes: a cross-platform series from Mike Rapoport
  to consolidate asm/agp.h between architectures, and a correctness
  change for __generic_cmpxchg_local() from Matt Evans"

* tag 'asm-generic-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  char/agp: introduce asm-generic/agp.h
  char/agp: consolidate {alloc,free}_gatt_pages()
  locking/atomic: cmpxchg: Make __generic_cmpxchg_local compare against zero-extended 'old' value
This commit is contained in:
Linus Torvalds 2023-02-20 15:55:47 -08:00
commit db77b8502a
14 changed files with 25 additions and 112 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/alpha/include/asm/Kbuild
View File

@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table.h
generic-y += agp.h
generic-y += export.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h

19
arch/alpha/include/asm/agp.h
View File

@ -1,19 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef AGP_H
#define AGP_H 1
#include <asm/io.h>
/* dummy for now */
#define map_page_into_agp(page) do { } while (0)
#define unmap_page_from_agp(page) do { } while (0)
#define flush_agp_cache() mb()
/* GATT allocation. Returns/accepts GATT kernel virtual address. */
#define alloc_gatt_pages(order) \
((char *)__get_free_pages(GFP_KERNEL, (order)))
#define free_gatt_pages(table, order) \
free_pages((unsigned long)(table), (order))
#endif

1
arch/ia64/include/asm/Kbuild
View File

@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table.h
generic-y += agp.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h
generic-y += vtime.h

27
arch/ia64/include/asm/agp.h
View File

@ -1,27 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_IA64_AGP_H
#define _ASM_IA64_AGP_H
/*
* IA-64 specific AGP definitions.
*
* Copyright (C) 2002-2003 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
*/
/*
* To avoid memory-attribute aliasing issues, we require that the AGPGART engine operate
* in coherent mode, which lets us map the AGP memory as normal (write-back) memory
* (unlike x86, where it gets mapped "write-coalescing").
*/
#define map_page_into_agp(page) do { } while (0)
#define unmap_page_from_agp(page) do { } while (0)
#define flush_agp_cache() mb()
/* GATT allocation. Returns/accepts GATT kernel virtual address. */
#define alloc_gatt_pages(order) \
((char *)__get_free_pages(GFP_KERNEL, (order)))
#define free_gatt_pages(table, order) \
free_pages((unsigned long)(table), (order))
#endif /* _ASM_IA64_AGP_H */

1
arch/parisc/include/asm/Kbuild
View File

@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table_32.h
generated-y += syscall_table_64.h
generic-y += agp.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h
generic-y += user.h

21
arch/parisc/include/asm/agp.h
View File

@ -1,21 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_PARISC_AGP_H
#define _ASM_PARISC_AGP_H
/*
* PARISC specific AGP definitions.
* Copyright (c) 2006 Kyle McMartin <kyle@parisc-linux.org>
*
*/
#define map_page_into_agp(page) do { } while (0)
#define unmap_page_from_agp(page) do { } while (0)
#define flush_agp_cache() mb()
/* GATT allocation. Returns/accepts GATT kernel virtual address. */
#define alloc_gatt_pages(order) \
((char *)__get_free_pages(GFP_KERNEL, (order)))
#define free_gatt_pages(table, order) \
free_pages((unsigned long)(table), (order))
#endif /* _ASM_PARISC_AGP_H */

1
arch/powerpc/include/asm/Kbuild
View File

@ -2,6 +2,7 @@
generated-y += syscall_table_32.h
generated-y += syscall_table_64.h
generated-y += syscall_table_spu.h
generic-y += agp.h
generic-y += export.h
generic-y += kvm_types.h
generic-y += mcs_spinlock.h

19
arch/powerpc/include/asm/agp.h
View File

@ -1,19 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_AGP_H
#define _ASM_POWERPC_AGP_H
#ifdef __KERNEL__
#include <asm/io.h>
#define map_page_into_agp(page) do {} while (0)
#define unmap_page_from_agp(page) do {} while (0)
#define flush_agp_cache() mb()
/* GATT allocation. Returns/accepts GATT kernel virtual address. */
#define alloc_gatt_pages(order) \
((char *)__get_free_pages(GFP_KERNEL, (order)))
#define free_gatt_pages(table, order) \
free_pages((unsigned long)(table), (order))
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_AGP_H */

1
arch/sparc/include/asm/Kbuild
View File

@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
generated-y += syscall_table_32.h
generated-y += syscall_table_64.h
generic-y += agp.h
generic-y += export.h
generic-y += kvm_para.h
generic-y += mcs_spinlock.h

17
arch/sparc/include/asm/agp.h
View File

@ -1,17 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef AGP_H
#define AGP_H 1
/* dummy for now */
#define map_page_into_agp(page) do { } while (0)
#define unmap_page_from_agp(page) do { } while (0)
#define flush_agp_cache() mb()
/* GATT allocation. Returns/accepts GATT kernel virtual address. */
#define alloc_gatt_pages(order) \
((char *)__get_free_pages(GFP_KERNEL, (order)))
#define free_gatt_pages(table, order) \
free_pages((unsigned long)(table), (order))
#endif

6
arch/x86/include/asm/agp.h
View File

@ -23,10 +23,4 @@
*/
#define flush_agp_cache() wbinvd()
/* GATT allocation. Returns/accepts GATT kernel virtual address. */
#define alloc_gatt_pages(order) \
((char *)__get_free_pages(GFP_KERNEL, (order)))
#define free_gatt_pages(table, order) \
free_pages((unsigned long)(table), (order))
#endif /* _ASM_X86_AGP_H */

6
drivers/char/agp/agp.h
View File

@ -236,6 +236,12 @@ void agp3_generic_tlbflush(struct agp_memory *mem);
int agp3_generic_configure(void);
void agp3_generic_cleanup(void);
/* GATT allocation. Returns/accepts GATT kernel virtual address. */
#define alloc_gatt_pages(order) \
((char *)__get_free_pages(GFP_KERNEL, (order)))
#define free_gatt_pages(table, order) \
free_pages((unsigned long)(table), (order))
/* aperture sizes have been standardised since v3 */
#define AGP_GENERIC_SIZES_ENTRIES 11
extern const struct aper_size_info_16 agp3_generic_sizes[];

11
include/asm-generic/agp.h Normal file
View File

@ -0,0 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_GENERIC_AGP_H
#define _ASM_GENERIC_AGP_H
#include <asm/io.h>
#define map_page_into_agp(page) do {} while (0)
#define unmap_page_from_agp(page) do {} while (0)
#define flush_agp_cache() mb()
#endif /* _ASM_GENERIC_AGP_H */

6
include/asm-generic/cmpxchg-local.h
View File

@ -26,15 +26,15 @@ static inline unsigned long __generic_cmpxchg_local(volatile void *ptr,
raw_local_irq_save(flags);
switch (size) {
case 1: prev = *(u8 *)ptr;
if (prev == old)
if (prev == (u8)old)
*(u8 *)ptr = (u8)new;
break;
case 2: prev = *(u16 *)ptr;
if (prev == old)
if (prev == (u16)old)
*(u16 *)ptr = (u16)new;
break;
case 4: prev = *(u32 *)ptr;
if (prev == old)
if (prev == (u32)old)
*(u32 *)ptr = (u32)new;
break;
case 8: prev = *(u64 *)ptr;