diff options
| author | Alison Schofield <[email protected]> | 2023-12-22 16:47:40 -0800 |
|---|---|---|
| committer | Dan Williams <[email protected]> | 2023-12-24 13:43:48 -0800 |
| commit | 7984d22f1315bf30433e11e5010e4ce09ca22037 (patch) | |
| tree | 7f607edb0647ea26dfc3ae42e1e1dbd5bbf08b4b | |
| parent | ace196de694ebea5e2b3161e21ad169eb45accc6 (diff) | |
cxl/region: Add dev_dbg() detail on failure to allocate HPA space
When the region driver fails while allocating HPA space for a
new region it can be because the parent resource, the CXL Window,
has no more available space.
In that case, the debug user sees this message:
cxl_core:alloc_hpa:555: cxl region2: failed to allocate HPA: -34
Expand the message like this:
cxl_core:alloc_hpa:555: cxl region8: HPA allocation error (-34) for size:0x20000000 in CXL Window 0 [mem 0xf010000000-0xf04fffffff flags 0x200]
Now the debug user can examine /proc/iomem and consider actions
like removing other allocations in that space or reducing the
size of their region request.
Suggested-by: Dan Williams <[email protected]>
Signed-off-by: Alison Schofield <[email protected]>
Reviewed-by: Dave Jiang <[email protected]>
Reviewed-by: Vishal Verma <[email protected]>
Reviewed-by: Fan Ni <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
| -rw-r--r-- | drivers/cxl/core/region.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c index a61703c9d72a..d904f9752bc3 100644 --- a/drivers/cxl/core/region.c +++ b/drivers/cxl/core/region.c @@ -552,8 +552,9 @@ static int alloc_hpa(struct cxl_region *cxlr, resource_size_t size) res = alloc_free_mem_region(cxlrd->res, size, SZ_256M, dev_name(&cxlr->dev)); if (IS_ERR(res)) { - dev_dbg(&cxlr->dev, "failed to allocate HPA: %ld\n", - PTR_ERR(res)); + dev_dbg(&cxlr->dev, + "HPA allocation error (%ld) for size:%#llx in %s %pr\n", + PTR_ERR(res), size, cxlrd->res->name, cxlrd->res); return PTR_ERR(res); } |