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| author | Guo Weikang <guoweikang.kernel@gmail.com> | 2025-01-02 08:25:28 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-01-26 05:22:38 +0100 |
| commit | c6f239796b55dbc4225a6fca9f96232092b9df83 (patch) | |
| tree | d741398d6afb6bc2a736fae13ed589ceb5b679e7 /arch/sparc/mm | |
| parent | mm: make mmap_region() internal (diff) | |
| download | linux-c6f239796b55dbc4225a6fca9f96232092b9df83.tar.xz linux-c6f239796b55dbc4225a6fca9f96232092b9df83.zip | |
mm/memblock: add memblock_alloc_or_panic interface
Before SLUB initialization, various subsystems used memblock_alloc to
allocate memory. In most cases, when memory allocation fails, an
immediate panic is required. To simplify this behavior and reduce
repetitive checks, introduce `memblock_alloc_or_panic`. This function
ensures that memory allocation failures result in a panic automatically,
improving code readability and consistency across subsystems that require
this behavior.
[guoweikang.kernel@gmail.com: arch/s390: save_area_alloc default failure behavior changed to panic]
Link: https://lkml.kernel.org/r/20250109033136.2845676-1-guoweikang.kernel@gmail.com
Link: https://lore.kernel.org/lkml/Z2fknmnNtiZbCc7x@kernel.org/
Link: https://lkml.kernel.org/r/20250102072528.650926-1-guoweikang.kernel@gmail.com
Signed-off-by: Guo Weikang <guoweikang.kernel@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> [s390]
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/sparc/mm')
| -rw-r--r-- | arch/sparc/mm/srmmu.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c index e3a72c884b86..dd32711022f5 100644 --- a/arch/sparc/mm/srmmu.c +++ b/arch/sparc/mm/srmmu.c @@ -277,19 +277,13 @@ static void __init srmmu_nocache_init(void) bitmap_bits = srmmu_nocache_size >> SRMMU_NOCACHE_BITMAP_SHIFT; - srmmu_nocache_pool = memblock_alloc(srmmu_nocache_size, + srmmu_nocache_pool = memblock_alloc_or_panic(srmmu_nocache_size, SRMMU_NOCACHE_ALIGN_MAX); - if (!srmmu_nocache_pool) - panic("%s: Failed to allocate %lu bytes align=0x%x\n", - __func__, srmmu_nocache_size, SRMMU_NOCACHE_ALIGN_MAX); memset(srmmu_nocache_pool, 0, srmmu_nocache_size); srmmu_nocache_bitmap = - memblock_alloc(BITS_TO_LONGS(bitmap_bits) * sizeof(long), + memblock_alloc_or_panic(BITS_TO_LONGS(bitmap_bits) * sizeof(long), SMP_CACHE_BYTES); - if (!srmmu_nocache_bitmap) - panic("%s: Failed to allocate %zu bytes\n", __func__, - BITS_TO_LONGS(bitmap_bits) * sizeof(long)); bit_map_init(&srmmu_nocache_map, srmmu_nocache_bitmap, bitmap_bits); srmmu_swapper_pg_dir = __srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, SRMMU_PGD_TABLE_SIZE); @@ -452,9 +446,7 @@ static void __init sparc_context_init(int numctx) unsigned long size; size = numctx * sizeof(struct ctx_list); - ctx_list_pool = memblock_alloc(size, SMP_CACHE_BYTES); - if (!ctx_list_pool) - panic("%s: Failed to allocate %lu bytes\n", __func__, size); + ctx_list_pool = memblock_alloc_or_panic(size, SMP_CACHE_BYTES); for (ctx = 0; ctx < numctx; ctx++) { struct ctx_list *clist; |