diff options
| -rw-r--r-- | sys/kern/uipc_syscalls.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys/kern/uipc_syscalls.c b/sys/kern/uipc_syscalls.c index 8cfbf80..e3edad8 100644 --- a/sys/kern/uipc_syscalls.c +++ b/sys/kern/uipc_syscalls.c @@ -95,7 +95,7 @@ static struct { static vm_offset_t sf_base; static struct sf_buf *sf_bufs; -static int sf_buf_alloc_want; +static u_int sf_buf_alloc_want; /* * System call interface to the socket abstraction. @@ -1345,6 +1345,7 @@ sf_buf_init(void *arg) sf_bufs[i].kva = sf_base + i * PAGE_SIZE; SLIST_INSERT_HEAD(&sf_freelist, &sf_bufs[i], free_list); } + sf_buf_alloc_want = 0; mtx_exit(&sf_freelist.sf_lock, MTX_DEF); } @@ -1358,7 +1359,7 @@ sf_buf_alloc() mtx_enter(&sf_freelist.sf_lock, MTX_DEF); while ((sf = SLIST_FIRST(&sf_freelist)) == NULL) { - sf_buf_alloc_want = 1; + sf_buf_alloc_want++; msleep(&sf_freelist, &sf_freelist.sf_lock, PVM, "sfbufa", 0); } SLIST_REMOVE_HEAD(&sf_freelist, free_list); @@ -1395,8 +1396,8 @@ sf_buf_free(caddr_t addr, void *args) mtx_enter(&sf_freelist.sf_lock, MTX_DEF); SLIST_INSERT_HEAD(&sf_freelist, sf, free_list); if (sf_buf_alloc_want) { - sf_buf_alloc_want = 0; - wakeup(&sf_freelist); + sf_buf_alloc_want--; + wakeup_one(&sf_freelist); } mtx_exit(&sf_freelist.sf_lock, MTX_DEF); } |
