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* [PATCH net-next v1 1/2] net: core: Use the bitmap API to allocate bitmaps
@ 2023-09-11 15:45 Andy Shevchenko
  2023-09-11 15:45 ` [PATCH net-next v1 2/2] net: core: Sort headers alphabetically Andy Shevchenko
  2023-09-12 15:21 ` [PATCH net-next v1 1/2] net: core: Use the bitmap API to allocate bitmaps Simon Horman
  0 siblings, 2 replies; 11+ messages in thread
From: Andy Shevchenko @ 2023-09-11 15:45 UTC (permalink / raw)
  To: netdev, linux-kernel, bpf
  Cc: David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
	Andy Shevchenko, Sergey Ryazanov

Use bitmap_zalloc() and bitmap_free() instead of hand-writing them.
It is less verbose and it improves the type checking and semantic.

While at it, add missing header inclusion (should be bitops.h,
but with the above change it becomes bitmap.h).

Suggested-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 net/core/dev.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index ccff2b6ef958..85df22f05c38 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -69,7 +69,7 @@
  */
 
 #include <linux/uaccess.h>
-#include <linux/bitops.h>
+#include <linux/bitmap.h>
 #include <linux/capability.h>
 #include <linux/cpu.h>
 #include <linux/types.h>
@@ -1080,7 +1080,7 @@ static int __dev_alloc_name(struct net *net, const char *name, char *buf)
 			return -EINVAL;
 
 		/* Use one page as a bit array of possible slots */
-		inuse = (unsigned long *) get_zeroed_page(GFP_ATOMIC);
+		inuse = bitmap_zalloc(max_netdevices, GFP_ATOMIC);
 		if (!inuse)
 			return -ENOMEM;
 
@@ -1109,7 +1109,7 @@ static int __dev_alloc_name(struct net *net, const char *name, char *buf)
 		}
 
 		i = find_first_zero_bit(inuse, max_netdevices);
-		free_page((unsigned long) inuse);
+		bitmap_free(inuse);
 	}
 
 	snprintf(buf, IFNAMSIZ, name, i);
-- 
2.40.0.1.gaa8946217a0b


^ permalink raw reply related	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2023-09-13 11:10 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-09-11 15:45 [PATCH net-next v1 1/2] net: core: Use the bitmap API to allocate bitmaps Andy Shevchenko
2023-09-11 15:45 ` [PATCH net-next v1 2/2] net: core: Sort headers alphabetically Andy Shevchenko
2023-09-12 15:20   ` Simon Horman
2023-09-12 16:35     ` Andy Shevchenko
2023-09-12 16:53       ` Paolo Abeni
2023-09-12 17:04         ` Andy Shevchenko
2023-09-12 17:07           ` Alexei Starovoitov
2023-09-12 17:22             ` Andy Shevchenko
2023-09-12 17:25           ` Paolo Abeni
2023-09-13 11:10             ` Andy Shevchenko
2023-09-12 15:21 ` [PATCH net-next v1 1/2] net: core: Use the bitmap API to allocate bitmaps Simon Horman

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