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dmapool: use sysfs_emit() instead of scnprintf() 

Use sysfs_emit instead of scnprintf, snprintf or sprintf.

Link: https://lkml.kernel.org/r/20230126215125.4069751-4-kbusch@meta.com
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Tony Battersby 2023-01-26 13:51:16 -08:00 committed by Andrew Morton
parent 7f796d141c
commit 6521654543
1 changed files with 7 additions and 16 deletions
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23
mm/dmapool.c
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@ -64,18 +64,11 @@ static DEFINE_MUTEX(pools_reg_lock);
static ssize_t pools_show(struct device *dev, struct device_attribute *attr, char *buf)
{
unsigned temp;
unsigned size;
char *next;
int size;
struct dma_page *page;
struct dma_pool *pool;
next = buf;
size = PAGE_SIZE;
temp = scnprintf(next, size, "poolinfo - 0.1\n");
size -= temp;
next += temp;
size = sysfs_emit(buf, "poolinfo - 0.1\n");
mutex_lock(&pools_lock);
list_for_each_entry(pool, &dev->dma_pools, pools) {
@ -90,16 +83,14 @@ static ssize_t pools_show(struct device *dev, struct device_attribute *attr, cha
spin_unlock_irq(&pool->lock);
/* per-pool info, no real statistics yet */
temp = scnprintf(next, size, "%-16s %4u %4zu %4zu %2u\n",
pool->name, blocks,
pages * (pool->allocation / pool->size),
pool->size, pages);
size -= temp;
next += temp;
size += sysfs_emit_at(buf, size, "%-16s %4u %4zu %4zu %2u\n",
pool->name, blocks,
pages * (pool->allocation / pool->size),
pool->size, pages);
}
mutex_unlock(&pools_lock);
return PAGE_SIZE - size;
return size;
}
static DEVICE_ATTR_RO(pools);