From f86ad3e0194b6964a058dc223ca80bf81b419cf0 Mon Sep 17 00:00:00 2001 From: Mark Hairgrove Date: Wed, 3 Oct 2018 11:51:34 -0700 Subject: [PATCH] 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 Reviewed-by: Alistair Popple Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/npu-dma.c | 14 -------------- 1 file changed, 14 deletions(-) diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c index e4c0fabf37ac..6f60e0931922 100644 --- a/arch/powerpc/platforms/powernv/npu-dma.c +++ b/arch/powerpc/platforms/powernv/npu-dma.c @@ -17,7 +17,6 @@ #include #include #include -#include #include #include @@ -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) { -- 2.30.2