From 7d70718de014ada7280bb011db8655e18ed935b1 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Tue, 23 Jan 2018 17:27:47 +1100 Subject: [PATCH] staging: lustre: lnet/selftest: fix compile error on UP build When compiled without CONFIG_SMP, we get a compile error as ->ctb_parts is not defined. There is already a function, cfs_cpt_cpumask(), which will get the cpumask we need, and which handles the UP case by returning a NULL pointer. So use that and handle NULL. Also avoid the #ifdef by allocating a cpumask_var and copying into it, rather than sharing the mask. Reported-by: kbuild test robot Fixes: 6106c0f82481 ("staging: lustre: lnet: convert selftest to use workqueues") Signed-off-by: NeilBrown --- drivers/staging/lustre/lnet/selftest/module.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/drivers/staging/lustre/lnet/selftest/module.c b/drivers/staging/lustre/lnet/selftest/module.c index 31a74b48c995..7359aa56d9b3 100644 --- a/drivers/staging/lustre/lnet/selftest/module.c +++ b/drivers/staging/lustre/lnet/selftest/module.c @@ -110,7 +110,8 @@ lnet_selftest_init(void) lst_init_step = LST_INIT_WI_TEST; for (i = 0; i < nscheds; i++) { int nthrs = cfs_cpt_weight(lnet_cpt_table(), i); - struct workqueue_attrs attrs; + struct workqueue_attrs attrs = {0}; + cpumask_var_t *mask = cfs_cpt_cpumask(lnet_cpt_table(), i); /* reserve at least one CPU for LND */ nthrs = max(nthrs - 1, 1); @@ -121,14 +122,12 @@ lnet_selftest_init(void) rc = -ENOMEM; goto error; } - attrs.nice = 0; - #ifdef CONFIG_CPUMASK_OFFSTACK - attrs.cpumask = lnet_cpt_table()->ctb_parts[i].cpt_cpumask; - #else - cpumask_copy(attrs.cpumask, lnet_cpt_table()->ctb_parts[i].cpt_cpumask); - #endif - attrs.no_numa = false; - apply_workqueue_attrs(lst_test_wq[i], &attrs); + + if (mask && alloc_cpumask_var(&attrs.cpumask, GFP_KERNEL)) { + cpumask_copy(attrs.cpumask, *mask); + apply_workqueue_attrs(lst_test_wq[i], &attrs); + free_cpumask_var(attrs.cpumask); + } } rc = srpc_startup();