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6dcdd884e2
Based on review, `lock' is only acquired in hwbm_pool_add() which is invoked via ->probe(), ->resume() and ->ndo_change_mtu(). Based on this the lock can become a mutex and there is no need to disable interrupts during the procedure. Now that the lock is a mutex, hwbm_pool_add() no longer invokes hwbm_pool_refill() in an atomic context so we can pass GFP_KERNEL to hwbm_pool_refill() and remove the `gfp' argument from hwbm_pool_add(). Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
30 lines
921 B
C
30 lines
921 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _HWBM_H
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#define _HWBM_H
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struct hwbm_pool {
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/* Capacity of the pool */
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int size;
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/* Size of the buffers managed */
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int frag_size;
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/* Number of buffers currently used by this pool */
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int buf_num;
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/* constructor called during alocation */
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int (*construct)(struct hwbm_pool *bm_pool, void *buf);
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/* protect acces to the buffer counter*/
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struct mutex buf_lock;
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/* private data */
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void *priv;
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};
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#ifdef CONFIG_HWBM
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void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf);
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int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp);
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int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num);
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#else
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void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {}
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int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) { return 0; }
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int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num)
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{ return 0; }
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#endif /* CONFIG_HWBM */
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#endif /* _HWBM_H */
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