[PATCH 06/24] net, diet: Use small UDP hash tables on small kernels

Andi Kleen
2014-05-05T22:26:26Z

From: Andi Kleen <ak@linux.intel.com>

UDP has two hash tables, for UDP and UDP lite. Default
them to 16 entries each on small kernels. This can be
still overriden on the command line.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
net/ipv4/udp.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 4468e1a..90f967b 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2415,7 +2415,12 @@ void udp4_proc_exit(void)
}
#endif /* CONFIG_PROC_FS */

+#ifdef CONFIG_BASE_SMALL
+static __initdata unsigned long uhash_entries = 16;
+#else
static __initdata unsigned long uhash_entries;
+#endif
+
static int __init set_uhash_entries(char *str)
{
ssize_t ret;
--
1.9.0