From: Claire Chang <tientzu@chromium.org>
To: Rob Herring <robh+dt@kernel.org>,
mpe@ellerman.id.au, Joerg Roedel <joro@8bytes.org>,
Will Deacon <will@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
boris.ostrovsky@oracle.com, jgross@suse.com,
Christoph Hellwig <hch@lst.de>,
Marek Szyprowski <m.szyprowski@samsung.com>
Cc: benh@kernel.crashing.org, paulus@samba.org,
"list@263.net:IOMMU DRIVERS" <iommu@lists.linux-foundation.org>,
sstabellini@kernel.org, Robin Murphy <robin.murphy@arm.com>,
grant.likely@arm.com, xypron.glpk@gmx.de,
Thierry Reding <treding@nvidia.com>,
mingo@kernel.org, bauerman@linux.ibm.com, peterz@infradead.org,
Greg KH <gregkh@linuxfoundation.org>,
Saravana Kannan <saravanak@google.com>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
heikki.krogerus@linux.intel.com,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Randy Dunlap <rdunlap@infradead.org>,
Dan Williams <dan.j.williams@intel.com>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
linux-devicetree <devicetree@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
linuxppc-dev@lists.ozlabs.org, xen-devel@lists.xenproject.org,
Nicolas Boichat <drinkcat@chromium.org>,
Jim Quinlan <james.quinlan@broadcom.com>,
tfiga@chromium.org, bskeggs@redhat.com, bhelgaas@google.com,
chris@chris-wilson.co.uk, tientzu@chromium.org, daniel@ffwll.ch,
airlied@linux.ie, dri-devel@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org, jani.nikula@linux.intel.com,
jxgao@google.com, joonas.lahtinen@linux.intel.com,
linux-pci@vger.kernel.org, maarten.lankhorst@linux.intel.com,
matthew.auld@intel.com, rodrigo.vivi@intel.com,
thomas.hellstrom@linux.intel.com
Subject: [PATCH v13 02/12] swiotlb: Refactor swiotlb_create_debugfs
Date: Thu, 17 Jun 2021 14:26:25 +0800 [thread overview]
Message-ID: <20210617062635.1660944-3-tientzu@chromium.org> (raw)
In-Reply-To: <20210617062635.1660944-1-tientzu@chromium.org>
Split the debugfs creation to make the code reusable for supporting
different bounce buffer pools.
Signed-off-by: Claire Chang <tientzu@chromium.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Tested-by: Will Deacon <will@kernel.org>
---
kernel/dma/swiotlb.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 47bb2a766798..2dba659a1e73 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -671,19 +671,26 @@ bool is_swiotlb_active(void)
EXPORT_SYMBOL_GPL(is_swiotlb_active);
#ifdef CONFIG_DEBUG_FS
+static struct dentry *debugfs_dir;
-static int __init swiotlb_create_debugfs(void)
+static void swiotlb_create_debugfs_files(struct io_tlb_mem *mem)
{
- struct io_tlb_mem *mem = io_tlb_default_mem;
-
- if (!mem)
- return 0;
- mem->debugfs = debugfs_create_dir("swiotlb", NULL);
debugfs_create_ulong("io_tlb_nslabs", 0400, mem->debugfs, &mem->nslabs);
debugfs_create_ulong("io_tlb_used", 0400, mem->debugfs, &mem->used);
+}
+
+static int __init swiotlb_create_default_debugfs(void)
+{
+ struct io_tlb_mem *mem = io_tlb_default_mem;
+
+ debugfs_dir = debugfs_create_dir("swiotlb", NULL);
+ if (mem) {
+ mem->debugfs = debugfs_dir;
+ swiotlb_create_debugfs_files(mem);
+ }
return 0;
}
-late_initcall(swiotlb_create_debugfs);
+late_initcall(swiotlb_create_default_debugfs);
#endif
--
2.32.0.288.g62a8d224e6-goog
next prev parent reply other threads:[~2021-06-17 6:27 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-17 6:26 [PATCH v13 00/12] Restricted DMA Claire Chang
2021-06-17 6:26 ` [PATCH v13 01/12] swiotlb: Refactor swiotlb init functions Claire Chang
2021-06-17 23:30 ` Stefano Stabellini
2021-06-18 6:25 ` Claire Chang
2021-06-18 14:09 ` Tom Lendacky
2021-06-18 14:32 ` Christoph Hellwig
2021-06-21 17:59 ` Stefano Stabellini
2021-06-21 20:19 ` Christoph Hellwig
2021-06-17 6:26 ` Claire Chang [this message]
2021-06-17 6:26 ` [PATCH v13 03/12] swiotlb: Set dev->dma_io_tlb_mem to the swiotlb pool used Claire Chang
2021-06-17 23:30 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 04/12] swiotlb: Update is_swiotlb_buffer to add a struct device argument Claire Chang
2021-06-17 23:30 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 05/12] swiotlb: Update is_swiotlb_active " Claire Chang
2021-06-17 23:30 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 06/12] swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing Claire Chang
2021-06-17 23:31 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 07/12] swiotlb: Move alloc_size to swiotlb_find_slots Claire Chang
2021-06-17 6:26 ` [PATCH v13 08/12] swiotlb: Refactor swiotlb_tbl_unmap_single Claire Chang
2021-06-17 6:26 ` [PATCH v13 09/12] swiotlb: Add restricted DMA alloc/free support Claire Chang
2021-06-17 23:31 ` Stefano Stabellini
2021-06-17 6:26 ` [PATCH v13 10/12] swiotlb: Add restricted DMA pool initialization Claire Chang
2021-06-17 6:26 ` [PATCH v13 11/12] dt-bindings: of: Add restricted DMA pool Claire Chang
2021-06-17 6:26 ` [PATCH v13 12/12] of: Add plumbing for " Claire Chang
2021-06-17 6:32 ` [PATCH v13 00/12] Restricted DMA Claire Chang
2021-06-19 3:43 ` Claire Chang
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