From: "Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>
To: qemu-devel@nongnu.org, pbonzini@redhat.com, berrange@redhat.com,
quintela@redhat.com
Subject: [Qemu-devel] [PATCH 0/3] Automatic RCU read unlock
Date: Wed, 11 Sep 2019 17:41:59 +0100 [thread overview]
Message-ID: <20190911164202.31136-1-dgilbert@redhat.com> (raw)
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
This patch uses glib's g_auto mechanism to automatically free
rcu_read_lock's at the end of the block. Given that humans
have a habit of forgetting an error path somewhere it's
best to leave it to the compiler.
In particular:
https://bugzilla.redhat.com/show_bug.cgi?id=1746787
suggests we've forgotten an unlock case somewhere in the
rdma migration code.
Dave
Dr. David Alan Gilbert (3):
rcu: Add automatically released rcu_read_lock variant
migration: Use automatic rcu_read unlock in ram.c
migration: Use automatic rcu_read unlock in rdma.c
include/qemu/rcu.h | 12 ++++++++++
migration/ram.c | 25 ++++++++------------
migration/rdma.c | 57 +++++++++-------------------------------------
3 files changed, 32 insertions(+), 62 deletions(-)
--
2.21.0
next reply other threads:[~2019-09-11 16:43 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 16:41 Dr. David Alan Gilbert (git) [this message]
2019-09-11 16:42 ` [Qemu-devel] [PATCH 1/3] rcu: Add automatically released rcu_read_lock variant Dr. David Alan Gilbert (git)
2019-09-11 16:56 ` Daniel P. Berrangé
2019-09-11 17:04 ` Dr. David Alan Gilbert
2019-09-11 17:09 ` Daniel P. Berrangé
2019-09-11 17:10 ` Dr. David Alan Gilbert
2019-09-11 17:16 ` Daniel P. Berrangé
2019-09-11 17:18 ` Dr. David Alan Gilbert
2019-09-11 17:56 ` Eric Blake
2019-09-11 18:49 ` Dr. David Alan Gilbert
2019-09-11 17:40 ` Eric Blake
2019-09-11 17:49 ` Eric Blake
2019-09-11 18:27 ` Dr. David Alan Gilbert
2019-09-11 18:52 ` Dr. David Alan Gilbert
2019-09-11 16:42 ` [Qemu-devel] [PATCH 2/3] migration: Use automatic rcu_read unlock in ram.c Dr. David Alan Gilbert (git)
2019-09-11 16:59 ` Daniel P. Berrangé
2019-09-11 17:25 ` Dr. David Alan Gilbert
2019-09-11 16:42 ` [Qemu-devel] [PATCH 3/3] migration: Use automatic rcu_read unlock in rdma.c Dr. David Alan Gilbert (git)
2019-09-11 16:58 ` [Qemu-devel] [PATCH 0/3] Automatic RCU read unlock Daniel P. Berrangé
2019-09-11 17:13 ` Dr. David Alan Gilbert
2019-09-11 20:30 ` no-reply
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