lib/stackdepot: drop valid bit from handles
Stack depot doesn't use the valid bit in handles in any way, so drop it. Link: https://lkml.kernel.org/r/34969bba2ca6e012c6ad071767197dee64dc5723.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -32,13 +32,12 @@
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#define DEPOT_HANDLE_BITS (sizeof(depot_stack_handle_t) * 8)
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#define DEPOT_VALID_BITS 1
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#define DEPOT_POOL_ORDER 2 /* Pool size order, 4 pages */
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#define DEPOT_POOL_SIZE (1LL << (PAGE_SHIFT + DEPOT_POOL_ORDER))
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#define DEPOT_STACK_ALIGN 4
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#define DEPOT_OFFSET_BITS (DEPOT_POOL_ORDER + PAGE_SHIFT - DEPOT_STACK_ALIGN)
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#define DEPOT_POOL_INDEX_BITS (DEPOT_HANDLE_BITS - DEPOT_VALID_BITS - \
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DEPOT_OFFSET_BITS - STACK_DEPOT_EXTRA_BITS)
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#define DEPOT_POOL_INDEX_BITS (DEPOT_HANDLE_BITS - DEPOT_OFFSET_BITS - \
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STACK_DEPOT_EXTRA_BITS)
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#define DEPOT_POOLS_CAP 8192
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#define DEPOT_MAX_POOLS \
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(((1LL << (DEPOT_POOL_INDEX_BITS)) < DEPOT_POOLS_CAP) ? \
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@ -50,7 +49,6 @@ union handle_parts {
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struct {
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u32 pool_index : DEPOT_POOL_INDEX_BITS;
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u32 offset : DEPOT_OFFSET_BITS;
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u32 valid : DEPOT_VALID_BITS;
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u32 extra : STACK_DEPOT_EXTRA_BITS;
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};
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};
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@ -309,7 +307,6 @@ depot_alloc_stack(unsigned long *entries, int size, u32 hash, void **prealloc)
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stack->size = size;
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stack->handle.pool_index = pool_index;
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stack->handle.offset = pool_offset >> DEPOT_STACK_ALIGN;
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stack->handle.valid = 1;
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stack->handle.extra = 0;
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memcpy(stack->entries, entries, flex_array_size(stack, entries, size));
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pool_offset += required_size;
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