On Tue, May 25, 2021 at 4:01 PM David Hildenbrand [off-list ref] wrote:

On 17.05.21 13:20, Dong Aisheng wrote:

quoted

Make debug message more accurately.

Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
  mm/page_alloc.c | 5 +++--
  1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3100fcb08500..16f494352f58 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c

@@ -7263,14 +7263,15 @@ static void __init free_area_init_core(struct pglist_data *pgdat)
                                      pr_debug("  %s zone: %lu pages used for memmap\n",
                                               zone_names[j], memmap_pages);
                      } else
-                             pr_warn("  %s zone: %lu pages exceeds freesize %lu\n",
+                             pr_warn("  %s zone: %lu memmap pages exceeds freesize %lu\n",
                                      zone_names[j], memmap_pages, freesize);
              }

              /* Account for reserved pages */
              if (j == 0 && freesize > dma_reserve) {
                      freesize -= dma_reserve;
-                     pr_debug("  %s zone: %lu pages reserved\n", zone_names[0], dma_reserve);
+                     pr_debug("  %s zone: %lu pages reserved for dma\n",
+                              zone_names[0], dma_reserve);

... which is not really correct I think. See the comment above
set_dma_reserve(). It's called dma_reserve because it involves the first
zone -- where many unfreeable allocations like the kernel image end up.

Memory is not reserved for dma purposes ... and the zone name should be
sufficient.

You're right. I will drop this line of change.
Thanks

Regards
Aisheng

--
Thanks,

David / dhildenb