When building this code on a 32-bit platform such as ARM, there is a
link time error (lld error shown, happpens with ld.bfd too):
ld.lld: error: undefined symbol: __aeabi_uldivmod
>>> referenced by devlink.c
>>> net/core/devlink.o:(devlink_health_buffers_create) in archive
>>> built-in.a
This happens when using a regular division symbol with a u64 dividend.
Use DIV_ROUND_UP_ULL, which wraps do_div, to avoid this situation.
Fixes: cb5ccfbe73b3 ("devlink: Add health buffer support")
Signed-off-by: Nathan Chancellor <natechancel...@gmail.com>
---
net/core/devlink.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 60248a53c0ad..9ee25dfbc09d 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -3599,7 +3599,7 @@ static int devlink_nl_cmd_region_read_dumpit(struct
sk_buff *skb,
#define DEVLINK_HEALTH_BUFFER_SIZE (4096 - GENL_HDRLEN)
#define DEVLINK_HEALTH_BUFFER_DATA_SIZE (DEVLINK_HEALTH_BUFFER_SIZE / 2)
-#define DEVLINK_HEALTH_SIZE_TO_BUFFERS(size) DIV_ROUND_UP(size,
DEVLINK_HEALTH_BUFFER_DATA_SIZE)
+#define DEVLINK_HEALTH_SIZE_TO_BUFFERS(size) DIV_ROUND_UP_ULL(size,
DEVLINK_HEALTH_BUFFER_DATA_SIZE)
#define DEVLINK_HEALTH_BUFFER_MAX_CHUNK 1024
struct devlink_health_buffer {
--
2.20.1
