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swiotlb: clean up reporting

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This removes needless use of '%p', and refactors the printk calls to
use pr_*() helpers instead.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Kees Cook 2018-07-10 16:22:22 -07:00 committed by Christoph Hellwig
parent d27fb99f62
commit 7d63fb3af8
1 changed files with 8 additions and 10 deletions
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18
kernel/dma/swiotlb.c
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@ -17,6 +17,8 @@
* 08/12/11 beckyb Add highmem support
*/
#define pr_fmt(fmt) "software IO TLB: " fmt
#include <linux/cache.h>
#include <linux/dma-direct.h>
#include <linux/mm.h>
@ -162,20 +164,16 @@ static bool no_iotlb_memory;
void swiotlb_print_info(void)
{
unsigned long bytes = io_tlb_nslabs << IO_TLB_SHIFT;
unsigned char *vstart, *vend;
if (no_iotlb_memory) {
pr_warn("software IO TLB: No low mem\n");
pr_warn("No low mem\n");
return;
}
vstart = phys_to_virt(io_tlb_start);
vend = phys_to_virt(io_tlb_end);
printk(KERN_INFO "software IO TLB [mem %#010llx-%#010llx] (%luMB) mapped at [%p-%p]\n",
pr_info("mapped [mem %#010llx-%#010llx] (%luMB)\n",
(unsigned long long)io_tlb_start,
(unsigned long long)io_tlb_end,
bytes >> 20, vstart, vend - 1);
bytes >> 20);
}
/*
@ -275,7 +273,7 @@ swiotlb_init(int verbose)
if (io_tlb_start)
memblock_free_early(io_tlb_start,
PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT));
pr_warn("Cannot allocate SWIOTLB buffer");
pr_warn("Cannot allocate buffer");
no_iotlb_memory = true;
}
@ -317,8 +315,8 @@ swiotlb_late_init_with_default_size(size_t default_size)
return -ENOMEM;
}
if (order != get_order(bytes)) {
printk(KERN_WARNING "Warning: only able to allocate %ld MB "
"for software IO TLB\n", (PAGE_SIZE << order) >> 20);
pr_warn("only able to allocate %ld MB\n",
(PAGE_SIZE << order) >> 20);
io_tlb_nslabs = SLABS_PER_PAGE << order;
}
rc = swiotlb_late_init_with_tbl(vstart, io_tlb_nslabs);