LU-9441 llite: bind kthread thread to accepted node set

Bind both the agl and statahead kernel threads to a node that is
apart of the cpt table that Lustre use. This limits the polluting
of the cache of HPC applications.

Change-Id: I1c29fb5dbbdb6a73dac0dc6c872a797c05eab1ad
Signed-off-by: James Simmons <jsimmons@infradead.org>
Reviewed-on: https://review.whamcloud.com/38730
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lustre/llite/statahead.c b/lustre/llite/statahead.c
index 7752b45..7cd9df5 100644 (file)
--- a/lustre/llite/statahead.c
+++ b/lustre/llite/statahead.c
@@ -975,8 +975,9 @@ static void ll_stop_agl(struct ll_statahead_info *sai)
 /* start agl thread */
 static void ll_start_agl(struct dentry *parent, struct ll_statahead_info *sai)
 {
-       struct ll_inode_info  *plli;
-       struct task_struct    *task;
+       int node = cfs_cpt_spread_node(cfs_cpt_tab, CFS_CPT_ANY);
+       struct ll_inode_info *plli;
+       struct task_struct *task;
 
        ENTRY;
 
@@ -984,8 +985,8 @@ static void ll_start_agl(struct dentry *parent, struct ll_statahead_info *sai)
               sai, parent);
 
        plli = ll_i2info(parent->d_inode);
-       task = kthread_create(ll_agl_thread, parent,
-                             "ll_agl_%u", plli->lli_opendir_pid);
+       task = kthread_create_on_node(ll_agl_thread, parent, node, "ll_agl_%d",
+                                     plli->lli_opendir_pid);
        if (IS_ERR(task)) {
                CERROR("can't start ll_agl thread, rc: %ld\n", PTR_ERR(task));
                sai->sai_agl_valid = 0;
@@ -1558,6 +1559,7 @@ out:
 static int start_statahead_thread(struct inode *dir, struct dentry *dentry,
                                  bool agl)
 {
+       int node = cfs_cpt_spread_node(cfs_cpt_tab, CFS_CPT_ANY);
        struct ll_inode_info *lli = ll_i2info(dir);
        struct ll_statahead_info *sai = NULL;
        struct dentry *parent = dentry->d_parent;
@@ -1605,8 +1607,8 @@ static int start_statahead_thread(struct inode *dir, struct dentry *dentry,
        CDEBUG(D_READA, "start statahead thread: [pid %d] [parent %pd]\n",
               current->pid, parent);
 
-       task = kthread_create(ll_statahead_thread, parent, "ll_sa_%u",
-                             lli->lli_opendir_pid);
+       task = kthread_create_on_node(ll_statahead_thread, parent, node,
+                                     "ll_sa_%u", lli->lli_opendir_pid);
        if (IS_ERR(task)) {
                spin_lock(&lli->lli_sa_lock);
                lli->lli_sai = NULL;