Re: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks

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To: Bart Van Assche <Bart.VanAssche@xxxxxxx>
Subject: Re: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
From: "bigeasy@xxxxxxxxxxxxx" <bigeasy@xxxxxxxxxxxxx>
Date: Mon, 4 Jun 2018 09:16:06 +0200
Cc: "daniel@xxxxxxxxxx" <daniel@xxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "peterz@xxxxxxxxxxxxx" <peterz@xxxxxxxxxxxxx>, "rostedt@xxxxxxxxxxx" <rostedt@xxxxxxxxxxx>, "torvalds@xxxxxxxxxxxxxxxxxxxx" <torvalds@xxxxxxxxxxxxxxxxxxxx>, "nab@xxxxxxxxxxxxxxx" <nab@xxxxxxxxxxxxxxx>, "tglx@xxxxxxxxxxxxx" <tglx@xxxxxxxxxxxxx>, "acme@xxxxxxxxxx" <acme@xxxxxxxxxx>, "williams@xxxxxxxxxx" <williams@xxxxxxxxxx>, "linux-scsi@xxxxxxxxxxxxxxx" <linux-scsi@xxxxxxxxxxxxxxx>, "lclaudio@xxxxxxxxxx" <lclaudio@xxxxxxxxxx>, "target-devel@xxxxxxxxxxxxxxx" <target-devel@xxxxxxxxxxxxxxx>, "linux-rt-users@xxxxxxxxxxxxxxx" <linux-rt-users@xxxxxxxxxxxxxxx>
In-reply-to: <92633c987a900acf5e7defb481d347a9e5b1253d.camel@wdc.com>
User-agent: NeoMutt/20180512

On 2018-06-04 07:02:15 [+0000], Bart Van Assche wrote:
> 
> Would adding WARN_ON_ONCE(!irqs_disabled()) work fine with an RT kernel?

no, because the interrupts are not disabled at this point on RT.
Lockdep works fine on RT.

> Thanks,
> 
> Bart.

Sebastian

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References:
- Re: [PATCH] target: Use WARNON_NON_RT(!irqs_disabled())
  - From: Bart Van Assche
- Re: [PATCH] target: Use WARNON_NON_RT(!irqs_disabled())
  - From: Linus Torvalds
- [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
  - From: bigeasy@xxxxxxxxxxxxx
- Re: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
  - From: Steven Rostedt
- Re: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
  - From: bigeasy@xxxxxxxxxxxxx
- Re: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
  - From: Bart Van Assche
- Re: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
  - From: bigeasy@xxxxxxxxxxxxx
- Re: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
  - From: Bart Van Assche
- Re: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
  - From: bigeasy@xxxxxxxxxxxxx
- Re: [PATCH 1/2] target: drop spin_lock_assert() + irqs_disabled() combo checks
  - From: Bart Van Assche

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