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Subject[PATCH 04/10] xen/swiotlb: Move the nr_tbl determination in its own function.
Date
Moving the function out of the way to prepare for the late
SWIOTLB init.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
drivers/xen/swiotlb-xen.c | 21 +++++++++++----------
1 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 1afb4fb..a2aad6e 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -144,25 +144,26 @@ xen_swiotlb_fixup(void *buf, size_t size, unsigned long nslabs)
} while (i < nslabs);
return 0;
}
+static unsigned long xen_set_nslabs(unsigned long nr_tbl)
+{
+ if (!nr_tbl) {
+ xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT);
+ xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE);
+ } else
+ xen_io_tlb_nslabs = nr_tbl;

+ return xen_io_tlb_nslabs << IO_TLB_SHIFT;
+}
void __init xen_swiotlb_init(int verbose)
{
unsigned long bytes;
int rc = -ENOMEM;
- unsigned long nr_tbl;
char *m = NULL;
unsigned int repeat = 3;

- nr_tbl = swiotlb_nr_tbl();
- if (nr_tbl)
- xen_io_tlb_nslabs = nr_tbl;
- else {
- xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT);
- xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE);
- }
+ xen_io_tlb_nslabs = swiotlb_nr_tbl();
retry:
- bytes = xen_io_tlb_nslabs << IO_TLB_SHIFT;
-
+ bytes = xen_set_nslabs(xen_io_tlb_nslabs);
/*
* Get IO TLB memory from any location.
*/
--
1.7.7.6


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