linux-kernel - [PATCH 8/8] dax: add debug for region available

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Message-ID: <148143774706.10950.14457441051651852899.stgit@dwillia2-desk3.amr.corp.intel.com>
Date:   Sat, 10 Dec 2016 22:29:07 -0800
From:   Dan Williams <dan.j.williams@...el.com>
To:     linux-nvdimm@...ts.01.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 8/8] dax: add debug for region available_size

Add dynamic debug statements to dump the per-dax-dev resource
allocations and device offsets.

Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/dax/dax.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c
index b130eff91b83..d1641e69a088 100644
--- a/drivers/dax/dax.c
+++ b/drivers/dax/dax.c
@@ -97,8 +97,11 @@ static unsigned long long dax_region_avail_size(
 	WARN_ON_ONCE(!mutex_is_locked(&dax_region->lock));
 
 	size = resource_size(&dax_region->res);
-	for_each_dax_region_resource(dax_region, res)
+	for_each_dax_region_resource(dax_region, res) {
+		dev_dbg(dax_region->dev, "%s: %pr offset: %lx\n",
+				res->name, res, res->desc);
 		size -= resource_size(res);
+	}
 
 	return size;
 }
@@ -372,6 +375,7 @@ struct dax_region *alloc_dax_region(struct device *parent, int region_id,
 	dax_region->res.name = dev_name(parent);
 	dax_region->res.start = res->start;
 	dax_region->res.end = res->end;
+	dax_region->res.flags = IORESOURCE_MEM;
 	dax_region->pfn_flags = pfn_flags;
 	mutex_init(&dax_region->lock);
 	kref_init(&dax_region->kref);