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/* This used to ICE due to a backend problem on s390. */
/* { dg-do compile } */
/* { dg-options "-O1 -mpacked-stack" } */
typedef unsigned int __u32;
typedef struct
{
volatile int counter;
} __attribute__ ((aligned (4))) atomic_t;
static __inline__ __attribute__ ((always_inline))
void atomic_inc (volatile atomic_t * v)
{
(
{
typeof (v->counter) old_val, new_val;
__asm__ __volatile__ (
" l %0,0(%3)\n"
"0: lr %1,%0\n"
" ar %1,%4\n"
" cs %0,%1,0(%3)\n"
" jl 0b":
"=&d" (old_val), "=&d" (new_val), "=m" (((atomic_t *) (v))->counter):
"a" (v), "d" (1), "m" (((atomic_t *) (v))->counter):
"cc", "memory");
});
}
extern unsigned long volatile __attribute__ ((section (".data"))) jiffies;
struct inet_peer
{
unsigned long dtime;
atomic_t refcnt;
};
static volatile int peer_total;
int inet_peer_threshold = 65536 + 128;
int inet_peer_minttl = 120 * 100;
int inet_peer_maxttl = 10 * 60 * 100;
static int
cleanup_once (unsigned long ttl)
{
struct inet_peer *p;
if (p != ((void *) 0))
{
if (((
{
1;}
) && ((long) (jiffies) - (long) (p->dtime + ttl) < 0)))
{
return -1;
}
atomic_inc (&p->refcnt);
}
}
struct inet_peer *
inet_getpeer (__u32 daddr, int create)
{
int i;
int ttl;
if (peer_total >= inet_peer_threshold)
ttl = inet_peer_minttl;
else
ttl =
inet_peer_maxttl - (inet_peer_maxttl -
inet_peer_minttl) / 100 * peer_total /
inet_peer_threshold * 100;
for (i = 0; i < 30 && !cleanup_once (ttl); i++);
}
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