It's way past it's usefulness. And this gets rid of a bunch
of stray ->rt_{dst,src} references.
Even the comment documenting the macro was inaccurate (stated
default was 1 when it's 0).
If reintroduced, it should be done properly, with dynamic debug
facilities.
Signed-off-by: David S. Miller <davem@davemloft.net>
#include <net/neighbour.h>
#include <asm/processor.h>
#include <net/neighbour.h>
#include <asm/processor.h>
-/*
- * 0 - no debugging messages
- * 1 - rare events and bugs (default)
- * 2 - trace mode.
- */
-#define RT_CACHE_DEBUG 0
-
#define DST_GC_MIN (HZ/10)
#define DST_GC_INC (HZ/2)
#define DST_GC_MAX (120*HZ)
#define DST_GC_MIN (HZ/10)
#define DST_GC_INC (HZ/2)
#define DST_GC_MAX (120*HZ)
* 3) This list is guarded by a mutex,
* so that the gc_task and dst_dev_event() can be synchronized.
*/
* 3) This list is guarded by a mutex,
* so that the gc_task and dst_dev_event() can be synchronized.
*/
-#if RT_CACHE_DEBUG >= 2
-static atomic_t dst_total = ATOMIC_INIT(0);
-#endif
/*
* We want to keep lock & list close together
/*
* We want to keep lock & list close together
unsigned long expires = ~0L;
struct dst_entry *dst, *next, head;
struct dst_entry *last = &head;
unsigned long expires = ~0L;
struct dst_entry *dst, *next, head;
struct dst_entry *last = &head;
-#if RT_CACHE_DEBUG >= 2
- ktime_t time_start = ktime_get();
- struct timespec elapsed;
-#endif
mutex_lock(&dst_gc_mutex);
next = dst_busy_list;
mutex_lock(&dst_gc_mutex);
next = dst_busy_list;
spin_unlock_bh(&dst_garbage.lock);
mutex_unlock(&dst_gc_mutex);
spin_unlock_bh(&dst_garbage.lock);
mutex_unlock(&dst_gc_mutex);
-#if RT_CACHE_DEBUG >= 2
- elapsed = ktime_to_timespec(ktime_sub(ktime_get(), time_start));
- printk(KERN_DEBUG "dst_total: %d delayed: %d work_perf: %d"
- " expires: %lu elapsed: %lu us\n",
- atomic_read(&dst_total), delayed, work_performed,
- expires,
- elapsed.tv_sec * USEC_PER_SEC +
- elapsed.tv_nsec / NSEC_PER_USEC);
-#endif
}
int dst_discard(struct sk_buff *skb)
}
int dst_discard(struct sk_buff *skb)
dst->lastuse = jiffies;
dst->flags = flags;
dst->next = NULL;
dst->lastuse = jiffies;
dst->flags = flags;
dst->next = NULL;
-#if RT_CACHE_DEBUG >= 2
- atomic_inc(&dst_total);
-#endif
dst_entries_add(ops, 1);
return dst;
}
dst_entries_add(ops, 1);
return dst;
}
dst->ops->destroy(dst);
if (dst->dev)
dev_put(dst->dev);
dst->ops->destroy(dst);
if (dst->dev)
dev_put(dst->dev);
-#if RT_CACHE_DEBUG >= 2
- atomic_dec(&dst_total);
-#endif
kmem_cache_free(dst->ops->kmem_cachep, dst);
dst = child;
kmem_cache_free(dst->ops->kmem_cachep, dst);
dst = child;
-#if RT_CACHE_DEBUG >= 2
- printk(KERN_DEBUG "expire>> %u %d %d %d\n", expire,
- dst_entries_get_fast(&ipv4_dst_ops), goal, i);
-#endif
if (dst_entries_get_fast(&ipv4_dst_ops) < ip_rt_max_size)
goto out;
if (dst_entries_get_fast(&ipv4_dst_ops) < ip_rt_max_size)
goto out;
dst_entries_get_fast(&ipv4_dst_ops) < ipv4_dst_ops.gc_thresh ||
dst_entries_get_slow(&ipv4_dst_ops) < ipv4_dst_ops.gc_thresh)
expire = ip_rt_gc_timeout;
dst_entries_get_fast(&ipv4_dst_ops) < ipv4_dst_ops.gc_thresh ||
dst_entries_get_slow(&ipv4_dst_ops) < ipv4_dst_ops.gc_thresh)
expire = ip_rt_gc_timeout;
-#if RT_CACHE_DEBUG >= 2
- printk(KERN_DEBUG "expire++ %u %d %d %d\n", expire,
- dst_entries_get_fast(&ipv4_dst_ops), goal, rover);
-#endif
rt->dst.rt_next = rt_hash_table[hash].chain;
rt->dst.rt_next = rt_hash_table[hash].chain;
-#if RT_CACHE_DEBUG >= 2
- if (rt->dst.rt_next) {
- struct rtable *trt;
- printk(KERN_DEBUG "rt_cache @%02x: %pI4",
- hash, &rt->rt_dst);
- for (trt = rt->dst.rt_next; trt; trt = trt->dst.rt_next)
- printk(" . %pI4", &trt->rt_dst);
- printk("\n");
- }
-#endif
/*
* Since lookup is lockfree, we must make sure
* previous writes to rt are committed to memory
/*
* Since lookup is lockfree, we must make sure
* previous writes to rt are committed to memory
unsigned hash = rt_hash(rt->rt_key_dst, rt->rt_key_src,
rt->rt_oif,
rt_genid(dev_net(dst->dev)));
unsigned hash = rt_hash(rt->rt_key_dst, rt->rt_key_src,
rt->rt_oif,
rt_genid(dev_net(dst->dev)));
-#if RT_CACHE_DEBUG >= 1
- printk(KERN_DEBUG "ipv4_negative_advice: redirect to %pI4/%02x dropped\n",
- &rt->rt_dst, rt->rt_key_tos);
-#endif
rt_del(hash, rt);
ret = NULL;
} else if (rt->peer &&
rt_del(hash, rt);
ret = NULL;
} else if (rt->peer &&