Re: [PATCH v2 3/3] powerpc/powernv/npu: Remove atsd_threshold debugfs setting
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From: Alistair Popple <hidden>
Date: 2018-10-04 05:26:02
Reviewed-by: Alistair Popple <redacted> On Wednesday, 3 October 2018 11:51:34 AM AEST Mark Hairgrove wrote:
quoted hunk ↗ jump to hunk
This threshold is no longer used now that all invalidates issue a single ATSD to each active NPU. Signed-off-by: Mark Hairgrove <redacted> --- arch/powerpc/platforms/powernv/npu-dma.c | 14 -------------- 1 files changed, 0 insertions(+), 14 deletions(-)diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c index e4c0fab..6f60e09 100644 --- a/arch/powerpc/platforms/powernv/npu-dma.c +++ b/arch/powerpc/platforms/powernv/npu-dma.c@@ -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>@@ -43,14 +42,6 @@ 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) {