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IB/mthca: Use non-atomic bitmap functions when possible in 'mthca_allocator.c'
The accesses to the 'alloc->table' bitmap are protected by the 'alloc->lock' spinlock, so no concurrent accesses can happen. So prefer the non-atomic '__[set|clear]_bit()' functions to save a few cycles. Link: https://lore.kernel.org/r/5f909ca1284fa4d2cf13952b08b9e303b656c968.1637785902.git.christophe.jaillet@wanadoo.fr Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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1 changed files with 2 additions and 2 deletions
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@ -51,7 +51,7 @@ u32 mthca_alloc(struct mthca_alloc *alloc)
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}
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if (obj < alloc->max) {
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set_bit(obj, alloc->table);
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__set_bit(obj, alloc->table);
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obj |= alloc->top;
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} else
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obj = -1;
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@ -69,7 +69,7 @@ void mthca_free(struct mthca_alloc *alloc, u32 obj)
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spin_lock_irqsave(&alloc->lock, flags);
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clear_bit(obj, alloc->table);
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__clear_bit(obj, alloc->table);
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alloc->last = min(alloc->last, obj);
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alloc->top = (alloc->top + alloc->max) & alloc->mask;
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