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authorChuck Lever <cel@netapp.com>2006-01-03 09:55:49 +0100
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-01-06 14:58:55 -0500
commit02107148349f31eee7c0fb06fd7a880df73dbd20 (patch)
tree37bffd81e08b8e50394ce89a1aa7a3961f0ffbe7 /include/linux/sunrpc
parent03c21733938aad0758f5f88e1cc7ede69fc3c910 (diff)
SUNRPC: switchable buffer allocation
Add RPC client transport switch support for replacing buffer management on a per-transport basis. In the current IPv4 socket transport implementation, RPC buffers are allocated as needed for each RPC message that is sent. Some transport implementations may choose to use pre-allocated buffers for encoding, sending, receiving, and unmarshalling RPC messages, however. For transports capable of direct data placement, the buffers can be carved out of a pre-registered area of memory rather than from a slab cache. Test-plan: Millions of fsx operations. Performance characterization with "sio" and "iozone". Use oprofile and other tools to look for significant regression in CPU utilization. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/sunrpc')
-rw-r--r--include/linux/sunrpc/sched.h3
-rw-r--r--include/linux/sunrpc/xprt.h10
2 files changed, 6 insertions, 7 deletions
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index 94b0afa4ab0..8b25629accd 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -52,8 +52,6 @@ struct rpc_task {
* RPC call state
*/
struct rpc_message tk_msg; /* RPC call info */
- __u32 * tk_buffer; /* XDR buffer */
- size_t tk_bufsize;
__u8 tk_garb_retry;
__u8 tk_cred_retry;
@@ -268,6 +266,7 @@ struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *);
void rpc_wake_up_status(struct rpc_wait_queue *, int);
void rpc_delay(struct rpc_task *, unsigned long);
void * rpc_malloc(struct rpc_task *, size_t);
+void rpc_free(struct rpc_task *);
int rpciod_up(void);
void rpciod_down(void);
void rpciod_wake_up(void);
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index 3b8b6e823c7..7885b9621ce 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -79,21 +79,19 @@ struct rpc_rqst {
void (*rq_release_snd_buf)(struct rpc_rqst *); /* release rq_enc_pages */
struct list_head rq_list;
+ __u32 * rq_buffer; /* XDR encode buffer */
+ size_t rq_bufsize;
+
struct xdr_buf rq_private_buf; /* The receive buffer
* used in the softirq.
*/
unsigned long rq_majortimeo; /* major timeout alarm */
unsigned long rq_timeout; /* Current timeout value */
unsigned int rq_retries; /* # of retries */
- /*
- * For authentication (e.g. auth_des)
- */
- u32 rq_creddata[2];
/*
* Partial send handling
*/
-
u32 rq_bytes_sent; /* Bytes we have sent */
unsigned long rq_xtime; /* when transmitted */
@@ -107,6 +105,8 @@ struct rpc_xprt_ops {
int (*reserve_xprt)(struct rpc_task *task);
void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task);
void (*connect)(struct rpc_task *task);
+ void * (*buf_alloc)(struct rpc_task *task, size_t size);
+ void (*buf_free)(struct rpc_task *task);
int (*send_request)(struct rpc_task *task);
void (*set_retrans_timeout)(struct rpc_task *task);
void (*timer)(struct rpc_task *task);