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staging/lustre/lnet: Get rid of IOC_LIBCFS_DEBUG_PEER hack 

IOC_LIBCFS_DEBUG_PEER was added back in the stone ages to print debug
statistics on a peer when peer timeout happens.
Redo it properly as a separate LNet API call,
also get rid of "ioctl" forwarding into the underlying LNDs,
since no current LNDs implement this function anymore.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oleg Drokin 2016-01-03 12:05:33 -05:00 committed by Greg Kroah-Hartman
parent fccfde7d5d
commit 71c36dd795
4 changed files with 10 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h
View File

@ -123,7 +123,7 @@ struct libcfs_ioctl_handler {
#define IOC_LIBCFS_CONFIGURE _IOWR('e', 59, long)
#define IOC_LIBCFS_TESTPROTOCOMPAT _IOWR('e', 60, long)
#define IOC_LIBCFS_PING _IOWR('e', 61, long)
#define IOC_LIBCFS_DEBUG_PEER _IOWR('e', 62, long)
/* #define IOC_LIBCFS_DEBUG_PEER _IOWR('e', 62, long) */
#define IOC_LIBCFS_LNETST _IOWR('e', 63, long)
/* lnd ioctls */
#define IOC_LIBCFS_REGISTER_MYNID _IOWR('e', 70, long)

1
drivers/staging/lustre/include/linux/lnet/api.h
View File

@ -197,6 +197,7 @@ int LNetGet(lnet_nid_t self,
int LNetSetLazyPortal(int portal);
int LNetClearLazyPortal(int portal);
int LNetCtl(unsigned int cmd, void *arg);
void LNetDebugPeer(lnet_process_id_t id);
/** @} lnet_misc */

38
drivers/staging/lustre/lnet/lnet/api-ni.c
View File

@ -1316,17 +1316,10 @@ LNetNIFini(void)
EXPORT_SYMBOL(LNetNIFini);
/**
* This is an ugly hack to export IOC_LIBCFS_DEBUG_PEER and
* IOC_LIBCFS_PORTALS_COMPATIBILITY commands to users, by tweaking the LNet
* internal ioctl handler.
* LNet ioctl handler.
*
* IOC_LIBCFS_PORTALS_COMPATIBILITY is now deprecated, don't use it.
*
* \param cmd IOC_LIBCFS_DEBUG_PEER to print debugging data about a peer.
* The data will be printed to system console. Don't use it excessively.
* \param arg A pointer to lnet_process_id_t, process ID of the peer.
*
* \return Always return 0 when called by users directly (i.e., not via ioctl).
*/
int
LNetCtl(unsigned int cmd, void *arg)
@ -1396,29 +1389,6 @@ LNetCtl(unsigned int cmd, void *arg)
data->ioc_count = rc;
return 0;
case IOC_LIBCFS_DEBUG_PEER: {
/* CAVEAT EMPTOR: this one designed for calling directly; not
* via an ioctl */
id = *((lnet_process_id_t *) arg);
lnet_debug_peer(id.nid);
ni = lnet_net2ni(LNET_NIDNET(id.nid));
if (ni == NULL) {
CDEBUG(D_WARNING, "No NI for %s\n", libcfs_id2str(id));
} else {
if (ni->ni_lnd->lnd_ctl == NULL) {
CDEBUG(D_WARNING, "No ctl for %s\n",
libcfs_id2str(id));
} else {
(void)ni->ni_lnd->lnd_ctl(ni, cmd, arg);
}
lnet_ni_decref(ni);
}
return 0;
}
default:
ni = lnet_net2ni(data->ioc_net);
if (ni == NULL)
@ -1436,6 +1406,12 @@ LNetCtl(unsigned int cmd, void *arg)
}
EXPORT_SYMBOL(LNetCtl);
void LNetDebugPeer(lnet_process_id_t id)
{
lnet_debug_peer(id.nid);
}
EXPORT_SYMBOL(LNetDebugPeer);
/**
* Retrieve the lnet_process_id_t ID of LNet interface at \a index. Note that
* all interfaces share a same PID, as requested by LNetNIInit().

2
drivers/staging/lustre/lustre/ptlrpc/client.c
View File

@ -1884,7 +1884,7 @@ int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink)
(s64)req->rq_sent, (s64)req->rq_real_sent);
if (imp != NULL && obd_debug_peer_on_timeout)
LNetCtl(IOC_LIBCFS_DEBUG_PEER, &imp->imp_connection->c_peer);
LNetDebugPeer(imp->imp_connection->c_peer);
ptlrpc_unregister_reply(req, async_unlink);
ptlrpc_unregister_bulk(req, async_unlink);