From: paulmck@kernel.org
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
"Paul E. McKenney" <paulmck@kernel.org>
Subject: [PATCH tip/core/rcu 08/12] rcutorture: Move to dynamic initialization of rcu_fwds
Date: Mon, 9 Dec 2019 19:42:13 -0800 [thread overview]
Message-ID: <20191210034217.405-8-paulmck@kernel.org> (raw)
In-Reply-To: <20191210034119.GA32711@paulmck-ThinkPad-P72>
From: "Paul E. McKenney" <paulmck@kernel.org>
In order to add multiple call_rcu() forward-progress kthreads, it will
be necessary to dynamically allocate and initialize. This commit
therefore moves the initialization from compile time to instead
immediately precede thread-creation time.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/rcu/rcutorture.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index cc88ce9..6f540fe 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -1686,11 +1686,7 @@ struct rcu_fwd {
unsigned long rcu_launder_gp_seq_start;
};
-struct rcu_fwd rcu_fwds = {
- .rcu_fwd_lock = __SPIN_LOCK_UNLOCKED(rcu_fwds.rcu_fwd_lock),
- .rcu_fwd_cb_tail = &rcu_fwds.rcu_fwd_cb_head,
-};
-
+struct rcu_fwd rcu_fwds;
bool rcu_fwd_emergency_stop;
static void rcu_torture_fwd_cb_hist(struct rcu_fwd *rfp)
@@ -2026,6 +2022,8 @@ static int __init rcu_torture_fwd_prog_init(void)
WARN_ON(1); /* Make sure rcutorture notices conflict. */
return 0;
}
+ spin_lock_init(&rcu_fwds.rcu_fwd_lock);
+ rcu_fwds.rcu_fwd_cb_tail = &rcu_fwds.rcu_fwd_cb_head;
if (fwd_progress_holdoff <= 0)
fwd_progress_holdoff = 1;
if (fwd_progress_div <= 0)
--
2.9.5
next prev parent reply other threads:[~2019-12-10 3:42 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-10 3:41 [PATCH tip/core/rcu 0/12] Torture-test updates for v5.6 Paul E. McKenney
2019-12-10 3:42 ` [PATCH tip/core/rcu 01/12] torture: Use gawk instead of awk for systime() function paulmck
2019-12-10 3:42 ` [PATCH tip/core/rcu 02/12] rcutorture: Dispense with Dracut for initrd creation paulmck
2019-12-10 3:42 ` [PATCH tip/core/rcu 03/12] torture: Handle jitter for CPUs that cannot be offlined paulmck
2019-12-10 3:42 ` [PATCH tip/core/rcu 04/12] torture: Handle systems lacking the mpstat command paulmck
2019-12-10 3:42 ` [PATCH tip/core/rcu 05/12] rcutorture: Add worst-case call_rcu() forward-progress results paulmck
2019-12-10 3:42 ` [PATCH tip/core/rcu 06/12] rcutorture: Pull callback forward-progress data into rcu_fwd struct paulmck
2019-12-10 3:42 ` [PATCH tip/core/rcu 07/12] rcutorture: Thread rcu_fwd pointer through forward-progress functions paulmck
2019-12-10 3:42 ` paulmck [this message]
2019-12-10 3:42 ` [PATCH tip/core/rcu 09/12] rcutorture: Complete threading rcu_fwd pointers through functions paulmck
2019-12-10 3:42 ` [PATCH tip/core/rcu 10/12] rcutorture: Dynamically allocate rcu_fwds structure paulmck
2019-12-10 3:42 ` [PATCH tip/core/rcu 11/12] torture: Allow "CFLIST" to specify default list of scenarios paulmck
2019-12-10 3:42 ` [PATCH tip/core/rcu 12/12] torture: Hoist calls to lscpu to higher-level kvm.sh script paulmck
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191210034217.405-8-paulmck@kernel.org \
--to=paulmck@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=dhowells@redhat.com \
--cc=dipankar@in.ibm.com \
--cc=edumazet@google.com \
--cc=fweisbec@gmail.com \
--cc=jiangshanlai@gmail.com \
--cc=joel@joelfernandes.org \
--cc=josh@joshtriplett.org \
--cc=kernel-team@fb.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mathieu.desnoyers@efficios.com \
--cc=mingo@kernel.org \
--cc=oleg@redhat.com \
--cc=peterz@infradead.org \
--cc=rcu@vger.kernel.org \
--cc=rostedt@goodmis.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.