diff options
| -rw-r--r-- | target/linux/generic/hack-4.14/600-net-core-add-RPS-balancer.patch | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/target/linux/generic/hack-4.14/600-net-core-add-RPS-balancer.patch b/target/linux/generic/hack-4.14/600-net-core-add-RPS-balancer.patch deleted file mode 100644 index 6fc52ee25c..0000000000 --- a/target/linux/generic/hack-4.14/600-net-core-add-RPS-balancer.patch +++ /dev/null @@ -1,93 +0,0 @@ -From 3e969c9695b45e1a052d43b367096ec99f2f0aac Mon Sep 17 00:00:00 2001 -From: John Crispin <john@phrozen.org> -Date: Thu, 10 Aug 2017 15:58:29 +0200 -Subject: [PATCH] net: core: add RPS balancer - -This patch adds a hash bucket based rps hash balancer. - -Signed-off-by: John Crispin <john@phrozen.org> ---- - net/core/dev.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++- - 1 file changed, 56 insertions(+), 1 deletion(-) - ---- a/net/core/dev.c -+++ b/net/core/dev.c -@@ -3626,6 +3626,58 @@ set_rps_cpu(struct net_device *dev, stru - return rflow; - } - -+#define RPS_TBL_SIZE_SHIFT 10 -+#define RPS_TBL_SIZE (1 << RPS_TBL_SIZE_SHIFT) -+struct rps_table { -+ int core; -+ struct timer_list expire; -+}; -+static struct rps_table rps_table[RPS_TBL_SIZE]; -+static int rps_table_last_core; -+ -+static void rps_table_expire(unsigned long data) -+{ -+ struct rps_table *entry = (struct rps_table *) data; -+ -+ entry->core = -1; -+} -+ -+static int rps_table_core(struct rps_map *map) -+{ -+ int i; -+ -+ for (i = 0; i < map->len; i++) { -+ int cpu = map->cpus[(rps_table_last_core + i + 1) % map->len]; -+ if (cpu_online(cpu)) { -+ rps_table_last_core = cpu; -+ return cpu; -+ } -+ } -+ return map->cpus[0]; -+} -+ -+static int rps_table_lookup(struct rps_map *map, u32 hash) -+{ -+ int bucket = hash & 0x3ff; -+ -+ if (rps_table[bucket].core < 0) -+ rps_table[bucket].core = rps_table_core(map); -+ mod_timer(&rps_table[bucket].expire, jiffies + HZ); -+ -+ return rps_table[bucket].core; -+} -+ -+static void rps_table_init(void) -+{ -+ int i; -+ -+ for (i = 0; i < RPS_TBL_SIZE; i++) { -+ rps_table[i].core = -1; -+ setup_timer(&rps_table[i].expire, rps_table_expire, -+ (unsigned long) &rps_table[i]); -+ } -+} -+ - /* - * get_rps_cpu is called from netif_receive_skb and returns the target - * CPU from the RPS map of the receiving queue for a given skb. -@@ -3715,7 +3767,7 @@ static int get_rps_cpu(struct net_device - try_rps: - - if (map) { -- tcpu = map->cpus[reciprocal_scale(hash, map->len)]; -+ tcpu = rps_table_lookup(map, hash); - if (cpu_online(tcpu)) { - cpu = tcpu; - goto done; -@@ -8800,6 +8852,10 @@ static int __init net_dev_init(void) - sd->backlog.weight = weight_p; - } - -+#ifdef CONFIG_RPS -+ rps_table_init(); -+#endif -+ - dev_boot_phase = 0; - - /* The loopback device is special if any other network devices |