From: "bigeasy@linutronix.de" <bigeasy@linutronix.de>
To: Linus Torvalds <torvalds@linux-foundation.org>,
"nab@linux-iscsi.org" <nab@linux-iscsi.org>
Cc: Bart Van Assche <Bart.VanAssche@wdc.com>,
"acme@kernel.org" <acme@kernel.org>,
"daniel@bristot.me" <daniel@bristot.me>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"peterz@infradead.org" <peterz@infradead.org>,
"rostedt@goodmis.org" <rostedt@goodmis.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"williams@redhat.com" <williams@redhat.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"lclaudio@redhat.com" <lclaudio@redhat.com>,
"target-devel@vger.kernel.org" <target-devel@vger.kernel.org>,
"linux-rt-users@vger.kernel.org" <linux-rt-users@vger.kernel.org>
Subject: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
Date: Fri, 23 Mar 2018 18:17:36 +0100 [thread overview]
Message-ID: <20180323171736.bcyi2oiolge4l6hl@linutronix.de> (raw)
In-Reply-To: <CA+55aFxVkuntSektVmwXktzvfEezdDTAM_zj4DJdp3qJxWf8aA@mail.gmail.com>
There are a few functions which check for if the lock is held
(spin_lock_assert()) and the interrupts are disabled (irqs_disabled()).
>From looking at the code, each function is static, the caller is near by
and does spin_lock_irq|safe(). As Linus puts it:
|It's not like this is some function that is exported to random users,
|and we should check that the calling convention is right.
|
|This looks like "it may have been useful during coding to document
|things, but it's not useful long-term".
Remove those checks.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/target/target_core_tmr.c | 2 --
drivers/target/target_core_transport.c | 6 ------
2 files changed, 8 deletions(-)
diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index 9c7bc1ca341a..3d35dad1de2c 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -114,8 +114,6 @@ static bool __target_check_io_state(struct se_cmd *se_cmd,
{
struct se_session *sess = se_cmd->se_sess;
- assert_spin_locked(&sess->sess_cmd_lock);
- WARN_ON_ONCE(!irqs_disabled());
/*
* If command already reached CMD_T_COMPLETE state within
* target_complete_cmd() or CMD_T_FABRIC_STOP due to shutdown,
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 74b646f165d4..2c3ddb3a4124 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2954,9 +2954,6 @@ __transport_wait_for_tasks(struct se_cmd *cmd, bool fabric_stop,
__acquires(&cmd->t_state_lock)
{
- assert_spin_locked(&cmd->t_state_lock);
- WARN_ON_ONCE(!irqs_disabled());
-
if (fabric_stop)
cmd->transport_state |= CMD_T_FABRIC_STOP;
@@ -3241,9 +3238,6 @@ static int __transport_check_aborted_status(struct se_cmd *cmd, int send_status)
{
int ret;
- assert_spin_locked(&cmd->t_state_lock);
- WARN_ON_ONCE(!irqs_disabled());
-
if (!(cmd->transport_state & CMD_T_ABORTED))
return 0;
/*
--
2.16.2
next prev parent reply other threads:[~2018-03-23 17:17 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-21 15:38 [PATCH] target: Use WARNON_NON_RT(!irqs_disabled()) Arnaldo Carvalho de Melo
2018-03-21 18:43 ` Linus Torvalds
2018-03-22 9:13 ` Thomas Gleixner
2018-03-22 9:37 ` Arnaldo Carvalho de Melo
2018-03-22 9:40 ` Arnaldo Carvalho de Melo
2018-03-22 9:47 ` Thomas Gleixner
2018-03-23 15:55 ` Sebastian Andrzej Siewior
2018-03-23 16:25 ` Bart Van Assche
2018-03-23 16:33 ` bigeasy
2018-03-23 16:37 ` Linus Torvalds
2018-03-23 17:17 ` bigeasy [this message]
2018-03-23 17:19 ` [PATCH 2/2] target: remove spin_lock_assert() in __target_(attach|detach)_tg_pt_gp() bigeasy
2018-03-23 17:44 ` Bart Van Assche
2018-03-23 17:50 ` bigeasy
2018-03-23 17:55 ` Bart Van Assche
2018-03-26 15:38 ` Steven Rostedt
2018-03-23 17:36 ` [PATCH 1/2 v2] target: drop spin_lock_assert() + irqs_disabled() combo checks Sebastian Andrzej Siewior
2018-03-23 17:47 ` Bart Van Assche
2018-03-26 15:13 ` [PATCH 1/2] " Steven Rostedt
2018-03-28 10:15 ` bigeasy
2018-03-28 15:05 ` Bart Van Assche
2018-03-28 15:14 ` bigeasy
2018-03-28 15:31 ` Bart Van Assche
2018-05-28 14:35 ` bigeasy
2018-06-04 7:02 ` Bart Van Assche
2018-06-04 7:16 ` bigeasy
2018-03-26 14:21 ` [PATCH] target: Use WARNON_NON_RT(!irqs_disabled()) Arnaldo Carvalho de Melo
2018-03-21 18:50 ` Christoph Hellwig
2018-03-21 19:01 ` Steven Rostedt
2018-03-22 10:25 ` kbuild test robot
2018-03-22 10:45 ` kbuild test robot
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=20180323171736.bcyi2oiolge4l6hl@linutronix.de \
--to=bigeasy@linutronix.de \
--cc=Bart.VanAssche@wdc.com \
--cc=acme@kernel.org \
--cc=daniel@bristot.me \
--cc=lclaudio@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rt-users@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=nab@linux-iscsi.org \
--cc=peterz@infradead.org \
--cc=rostedt@goodmis.org \
--cc=target-devel@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=williams@redhat.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).