lkml.org 
[lkml]   [2021]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH rcu 5/7] rcuscale: Warn on individual rcu_scale_init() error conditions
Date
When running rcuscale as a module, any rcu_scale_init() issues will be
reflected in the error code from modprobe or insmod, as the case may be.
However, these error codes are not available when running rcuscale
built-in, for example, when using the kvm.sh script. This commit
therefore adds WARN_ON_ONCE() to allow distinguishing rcu_scale_init()
errors when running rcuscale built-in.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/rcu/rcuscale.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c
index 2cc34a22a506..228f143bf935 100644
--- a/kernel/rcu/rcuscale.c
+++ b/kernel/rcu/rcuscale.c
@@ -758,7 +758,7 @@ kfree_scale_init(void)
init_waitqueue_head(&shutdown_wq);
firsterr = torture_create_kthread(kfree_scale_shutdown, NULL,
shutdown_task);
- if (firsterr)
+ if (torture_init_error(firsterr))
goto unwind;
schedule_timeout_uninterruptible(1);
}
@@ -775,7 +775,7 @@ kfree_scale_init(void)
for (i = 0; i < kfree_nrealthreads; i++) {
firsterr = torture_create_kthread(kfree_scale_thread, (void *)i,
kfree_reader_tasks[i]);
- if (firsterr)
+ if (torture_init_error(firsterr))
goto unwind;
}

@@ -838,7 +838,7 @@ rcu_scale_init(void)
init_waitqueue_head(&shutdown_wq);
firsterr = torture_create_kthread(rcu_scale_shutdown, NULL,
shutdown_task);
- if (firsterr)
+ if (torture_init_error(firsterr))
goto unwind;
schedule_timeout_uninterruptible(1);
}
@@ -852,7 +852,7 @@ rcu_scale_init(void)
for (i = 0; i < nrealreaders; i++) {
firsterr = torture_create_kthread(rcu_scale_reader, (void *)i,
reader_tasks[i]);
- if (firsterr)
+ if (torture_init_error(firsterr))
goto unwind;
}
while (atomic_read(&n_rcu_scale_reader_started) < nrealreaders)
@@ -879,7 +879,7 @@ rcu_scale_init(void)
}
firsterr = torture_create_kthread(rcu_scale_writer, (void *)i,
writer_tasks[i]);
- if (firsterr)
+ if (torture_init_error(firsterr))
goto unwind;
}
torture_init_end();
--
2.31.1.189.g2e36527f23
\
 
 \ /
  Last update: 2021-09-16 02:14    [W:0.055 / U:5.896 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site