* [PATCH net-next] net: always inline net_secret_init
@ 2013-10-23 6:44 Hannes Frederic Sowa
2013-10-23 20:27 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Hannes Frederic Sowa @ 2013-10-23 6:44 UTC (permalink / raw)
To: netdev
Currently net_secret_init does not get inlined, so we always have a call
to net_secret_init even in the fast path.
Let's specify net_secret_init as __always_inline so we have the nop in
the fast-path without the call to net_secret_init and the unlikely path
at the epilogue of the function.
jump_labels handle the inlining correctly.
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
---
net/core/secure_seq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c
index b02fd16..90e8a82 100644
--- a/net/core/secure_seq.c
+++ b/net/core/secure_seq.c
@@ -15,7 +15,7 @@
static u32 net_secret[NET_SECRET_SIZE] ____cacheline_aligned;
-static void net_secret_init(void)
+static __always_inline void net_secret_init(void)
{
net_get_random_once(net_secret, sizeof(net_secret));
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH net-next] net: always inline net_secret_init
2013-10-23 6:44 [PATCH net-next] net: always inline net_secret_init Hannes Frederic Sowa
@ 2013-10-23 20:27 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2013-10-23 20:27 UTC (permalink / raw)
To: hannes; +Cc: netdev
From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Wed, 23 Oct 2013 08:44:50 +0200
> Currently net_secret_init does not get inlined, so we always have a call
> to net_secret_init even in the fast path.
>
> Let's specify net_secret_init as __always_inline so we have the nop in
> the fast-path without the call to net_secret_init and the unlikely path
> at the epilogue of the function.
>
> jump_labels handle the inlining correctly.
>
> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Applied, thanks Hannes.
^ permalink raw reply [flat|nested] 2+ messages in thread
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