LU-718 mdt: rename mdt threads parameters to mds

rename mdt threads parameters to mds, so the following
mds layer change does not need to deal with the compatiblity
issue.

Signed-off-by: Wang Di <di.wang@whamcloud.com>
Change-Id: I3cb095812488b9459e4a3e878757d40410ac4191
Reviewed-on: http://review.whamcloud.com/3377
Tested-by: Hudson
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Liang Zhen <liang@whamcloud.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lustre/mdt/mdt_handler.c b/lustre/mdt/mdt_handler.c
index 64fcecf..9d9c84d 100644 (file)
--- a/lustre/mdt/mdt_handler.c
+++ b/lustre/mdt/mdt_handler.c
@@ -98,28 +98,33 @@ ldlm_mode_t mdt_dlm_lock_modes[] = {
  */
 static unsigned long mdt_num_threads;
 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
-               "number of mdt service threads to start");
+               "number of MDS service threads to start "
+               "(deprecated in favor of mds_num_threads)");
 
-static char *mdt_cpts;
-CFS_MODULE_PARM(mdt_cpts, "c", charp, 0444,
-               "CPU partitions MDT threads should run on");
+static unsigned long mds_num_threads;
+CFS_MODULE_PARM(mds_num_threads, "ul", ulong, 0444,
+               "number of MDS service threads to start");
 
-static unsigned long mdt_rdpg_num_threads;
-CFS_MODULE_PARM(mdt_rdpg_num_threads, "ul", ulong, 0444,
-               "number of mdt readpage service threads to start");
+static char *mds_num_cpts;
+CFS_MODULE_PARM(mds_num_cpts, "c", charp, 0444,
+               "CPU partitions MDS threads should run on");
 
-static char *mdt_rdpg_cpts;
-CFS_MODULE_PARM(mdt_rdpg_cpts, "c", charp, 0444,
-               "CPU partitions MDT readpage threads should run on");
+static unsigned long mds_rdpg_num_threads;
+CFS_MODULE_PARM(mds_rdpg_num_threads, "ul", ulong, 0444,
+               "number of MDS readpage service threads to start");
+
+static char *mds_rdpg_num_cpts;
+CFS_MODULE_PARM(mds_rdpg_num_cpts, "c", charp, 0444,
+               "CPU partitions MDS readpage threads should run on");
 
 /* NB: these two should be removed along with setattr service in the future */
-static unsigned long mdt_attr_num_threads;
-CFS_MODULE_PARM(mdt_attr_num_threads, "ul", ulong, 0444,
-               "number of mdt setattr service threads to start");
+static unsigned long mds_attr_num_threads;
+CFS_MODULE_PARM(mds_attr_num_threads, "ul", ulong, 0444,
+               "number of MDS setattr service threads to start");
 
-static char *mdt_attr_cpts;
-CFS_MODULE_PARM(mdt_attr_cpts, "c", charp, 0444,
-               "CPU partitions MDT setattr threads should run on");
+static char *mds_attr_num_cpts;
+CFS_MODULE_PARM(mds_attr_num_cpts, "c", charp, 0444,
+               "CPU partitions MDS setattr threads should run on");
 
 /* ptlrpc request handler for MDT. All handlers are
  * grouped into several slices - struct mdt_opc_slice,
@@ -3986,12 +3991,12 @@ static int mdt_start_ptlrpc_service(struct mdt_device *m)
                        .tc_nthrs_init          = MDT_NTHRS_INIT,
                        .tc_nthrs_base          = MDT_NTHRS_BASE,
                        .tc_nthrs_max           = MDT_NTHRS_MAX,
-                       .tc_nthrs_user          = mdt_num_threads,
+                       .tc_nthrs_user          = mds_num_threads,
                        .tc_cpu_affinity        = 1,
                        .tc_ctx_tags            = LCT_MD_THREAD,
                },
                .psc_cpt                = {
-                       .cc_pattern             = mdt_cpts,
+                       .cc_pattern             = mds_num_cpts,
                },
                .psc_ops                = {
                        .so_req_handler         = mdt_regular_handle,
@@ -4030,12 +4035,12 @@ static int mdt_start_ptlrpc_service(struct mdt_device *m)
                        .tc_nthrs_init          = MDT_RDPG_NTHRS_INIT,
                        .tc_nthrs_base          = MDT_RDPG_NTHRS_BASE,
                        .tc_nthrs_max           = MDT_RDPG_NTHRS_MAX,
-                       .tc_nthrs_user          = mdt_rdpg_num_threads,
+                       .tc_nthrs_user          = mds_rdpg_num_threads,
                        .tc_cpu_affinity        = 1,
                        .tc_ctx_tags            = LCT_MD_THREAD,
                },
                .psc_cpt                = {
-                       .cc_pattern             = mdt_rdpg_cpts,
+                       .cc_pattern             = mds_rdpg_num_cpts,
                },
                .psc_ops                = {
                        .so_req_handler         = mdt_readpage_handle,
@@ -4077,12 +4082,12 @@ static int mdt_start_ptlrpc_service(struct mdt_device *m)
                        .tc_nthrs_init          = MDT_SETA_NTHRS_INIT,
                        .tc_nthrs_base          = MDT_SETA_NTHRS_BASE,
                        .tc_nthrs_max           = MDT_SETA_NTHRS_MAX,
-                       .tc_nthrs_user          = mdt_attr_num_threads,
+                       .tc_nthrs_user          = mds_attr_num_threads,
                        .tc_cpu_affinity        = 1,
                        .tc_ctx_tags            = LCT_MD_THREAD,
                },
                .psc_cpt                = {
-                       .cc_pattern             = mdt_attr_cpts,
+                       .cc_pattern             = mds_attr_num_cpts,
                },
                .psc_ops                = {
                        .so_req_handler         = mdt_regular_handle,
@@ -6005,6 +6010,13 @@ static int __init mdt_mod_init(void)
         struct lprocfs_static_vars lvars;
         int rc;
 
+       if (mdt_num_threads != 0 && mds_num_threads == 0) {
+               LCONSOLE_INFO("mdt_num_threads module parameter is deprecated,"
+                             "use mds_num_threads instead or unset both for"
+                             "dynamic thread startup\n");
+               mds_num_threads = mdt_num_threads;
+       }
+
         lprocfs_mdt_init_vars(&lvars);
         rc = class_register_type(&mdt_obd_device_ops, NULL,
                                  lvars.module_vars, LUSTRE_MDT_NAME,