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powerpc/powernv/npu: Remove atsd_threshold debugfs setting 

This threshold is no longer used now that all invalidates issue a single
ATSD to each active NPU.

Signed-off-by: Mark Hairgrove <mhairgrove@nvidia.com>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Mark Hairgrove 2018-10-03 11:51:34 -07:00 committed by Michael Ellerman
parent 3689c37d23
commit f86ad3e019
1 changed files with 0 additions and 14 deletions
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14
arch/powerpc/platforms/powernv/npu-dma.c
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@ -17,7 +17,6 @@
#include <linux/pci.h>
#include <linux/memblock.h>
#include <linux/iommu.h>
#include <linux/debugfs.h>
#include <linux/sizes.h>
#include <asm/debugfs.h>
@ -42,14 +41,6 @@
*/
static DEFINE_SPINLOCK(npu_context_lock);
/*
* When an address shootdown range exceeds this threshold we invalidate the
* entire TLB on the GPU for the given PID rather than each specific address in
* the range.
*/
static uint64_t atsd_threshold = 2 * 1024 * 1024;
static struct dentry *atsd_threshold_dentry;
/*
* Other types of TCE cache invalidation are not functional in the
* hardware.
@ -966,11 +957,6 @@ int pnv_npu2_init(struct pnv_phb *phb)
static int npu_index;
uint64_t rc = 0;
if (!atsd_threshold_dentry) {
atsd_threshold_dentry = debugfs_create_x64("atsd_threshold",
0600, powerpc_debugfs_root, &atsd_threshold);
}
phb->npu.nmmu_flush =
of_property_read_bool(phb->hose->dn, "ibm,nmmu-flush");
for_each_child_of_node(phb->hose->dn, dn) {