[PATCH 02/24] net, diet: Reduce NAPI hash table for CONFIG_BASE_SMALL
From: Andi Kleen <hidden>
Date: 2014-05-05 22:34:13
Also in:
lkml
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Andi Kleen <redacted> For really small kernels, use only 3 bits for the hash table. Signed-off-by: Andi Kleen <redacted> --- net/core/dev.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index d2c8a06..c6cbe69 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c@@ -175,7 +175,14 @@ EXPORT_SYMBOL(dev_base_lock); static DEFINE_SPINLOCK(napi_hash_lock); static unsigned int napi_gen_id; -static DEFINE_HASHTABLE(napi_hash, 8); + +#ifdef CONFIG_BASE_SMALL +#define NAPI_HASH_BITS 3 +#else +#define NAPI_HASH_BITS 8 +#endif + +static DEFINE_HASHTABLE(napi_hash, NAPI_HASH_BITS); static seqcount_t devnet_rename_seq;
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1.9.0