From a7259df7670240ee03b0cfce8a3e5d3773911e24 Mon Sep 17 00:00:00 2001 From: Mike Rapoport Date: Thu, 2 Sep 2021 15:00:26 -0700 Subject: memblock: make memblock_find_in_range method private There are a lot of uses of memblock_find_in_range() along with memblock_reserve() from the times memblock allocation APIs did not exist. memblock_find_in_range() is the very core of memblock allocations, so any future changes to its internal behaviour would mandate updates of all the users outside memblock. Replace the calls to memblock_find_in_range() with an equivalent calls to memblock_phys_alloc() and memblock_phys_alloc_range() and make memblock_find_in_range() private method of memblock. This simplifies the callers, ensures that (unlikely) errors in memblock_reserve() are handled and improves maintainability of memblock_find_in_range(). Link: https://lkml.kernel.org/r/20210816122622.30279-1-rppt@kernel.org Signed-off-by: Mike Rapoport Reviewed-by: Catalin Marinas [arm64] Acked-by: Kirill A. Shutemov Acked-by: Rafael J. Wysocki [ACPI] Acked-by: Russell King (Oracle) Acked-by: Nick Kossifidis [riscv] Tested-by: Guenter Roeck Acked-by: Rob Herring Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/kernel/setup.c | 20 +++++++------------- 1 file changed, 7 insertions(+), 13 deletions(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index f97eb2371672..284a80c0b6e1 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -1012,31 +1012,25 @@ static void __init reserve_crashkernel(void) unsigned long long lowmem_max = __pa(high_memory - 1) + 1; if (crash_max > lowmem_max) crash_max = lowmem_max; - crash_base = memblock_find_in_range(CRASH_ALIGN, crash_max, - crash_size, CRASH_ALIGN); + + crash_base = memblock_phys_alloc_range(crash_size, CRASH_ALIGN, + CRASH_ALIGN, crash_max); if (!crash_base) { pr_err("crashkernel reservation failed - No suitable area found.\n"); return; } } else { + unsigned long long crash_max = crash_base + crash_size; unsigned long long start; - start = memblock_find_in_range(crash_base, - crash_base + crash_size, - crash_size, SECTION_SIZE); - if (start != crash_base) { + start = memblock_phys_alloc_range(crash_size, SECTION_SIZE, + crash_base, crash_max); + if (!start) { pr_err("crashkernel reservation failed - memory is in use.\n"); return; } } - ret = memblock_reserve(crash_base, crash_size); - if (ret < 0) { - pr_warn("crashkernel reservation failed - memory is in use (0x%lx)\n", - (unsigned long)crash_base); - return; - } - pr_info("Reserving %ldMB of memory at %ldMB for crashkernel (System RAM: %ldMB)\n", (unsigned long)(crash_size >> 20), (unsigned long)(crash_base >> 20), -- cgit v1.2.3