diff options
| author | Enze Li <lienze@kylinos.cn> | 2026-08-31 07:26:09 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-10-06 17:39:16 -0700 |
| commit | fb14504f2e8fdbf5efe4faf0051397d180bff4af (patch) | |
| tree | d28d669b340b35f8ab4e3f8d8d41d7a584406df0 | |
| parent | 3009b0a76cd19d63c45da6b11ce910b00e9f630b (diff) | |
samples/damon/mtier: add comment for struct region_range
The mtier sample defines a local struct region_range using phys_addr_t
instead of damon_addr_range which uses unsigned long. Add a comment
explaining the rationale: on 32-bit systems with more than 4GiB memory,
phys_addr_t will be 64-bit while unsigned long is 32-bit.
Link: https://lore.kernel.org/20260831142611.77572-8-sj@kernel.org
Signed-off-by: Enze Li <lienze@kylinos.cn>
Signed-off-by: SJ Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: SJ Park <sj@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hari Mishal <harimishal1@gmail.com>
Cc: Jaeyeon Lee <jaeyeon.lee.dev@gmail.com>
Cc: Li Youhong <liyouhong@kylinos.cn>
Cc: Shuah Khan <shuah@kernel.org>
Cc: "Zenghui Yu (Huawei)" <zenghui.yu@linux.dev>
Cc: zhaozhengzhuo <zhaozhengzhuo@uniontech.com>
| -rw-r--r-- | samples/damon/mtier.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/samples/damon/mtier.c b/samples/damon/mtier.c index d1123ebbfab9..bea45c87cc9b 100644 --- a/samples/damon/mtier.c +++ b/samples/damon/mtier.c @@ -52,6 +52,11 @@ module_param(detect_node_addresses, bool, 0600); static struct damon_ctx *ctxs[2]; +/* + * Use phys_addr_t instead of damon_addr_range (unsigned long) for physical + * addresses. On 32-bit systems with more than 4GB memory, phys_addr_t will + * be 64-bit while unsigned long is 32-bit. + */ struct region_range { phys_addr_t start; phys_addr_t end; |