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From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>, RCU <rcu@vger.kernel.org>,
	"Paul E . McKenney" <paulmck@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Michal Hocko <mhocko@suse.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	"Theodore Y . Ts'o" <tytso@mit.edu>,
	Joel Fernandes <joel@joelfernandes.org>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Uladzislau Rezki <urezki@gmail.com>,
	Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Subject: [PATCH 02/16] lib/debug: Remove pointless ARCH_NO_PREEMPT dependencies
Date: Thu, 29 Oct 2020 17:50:05 +0100	[thread overview]
Message-ID: <20201029165019.14218-2-urezki@gmail.com> (raw)
In-Reply-To: <20201029165019.14218-1-urezki@gmail.com>

From: Thomas Gleixner <tglx@linutronix.de>

ARCH_NO_PREEMPT disables the selection of CONFIG_PREEMPT_VOLUNTARY and
CONFIG_PREEMPT, but architectures which set this config option still
support preempt count for hard and softirq accounting.

There is absolutely no reason to prevent lockdep from using the preempt
counter nor is there a reason to prevent the enablement of
CONFIG_DEBUG_ATOMIC_SLEEP on such architectures.

Remove the dependencies.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
 lib/Kconfig.debug | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index d7a7bc3b6098..89c9a177fb9b 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1159,7 +1159,7 @@ config PROVE_LOCKING
 	select DEBUG_RWSEMS
 	select DEBUG_WW_MUTEX_SLOWPATH
 	select DEBUG_LOCK_ALLOC
-	select PREEMPT_COUNT if !ARCH_NO_PREEMPT
+	select PREEMPT_COUNT
 	select TRACE_IRQFLAGS
 	default n
 	help
@@ -1321,7 +1321,6 @@ config DEBUG_ATOMIC_SLEEP
 	bool "Sleep inside atomic section checking"
 	select PREEMPT_COUNT
 	depends on DEBUG_KERNEL
-	depends on !ARCH_NO_PREEMPT
 	help
 	  If you say Y here, various routines which may sleep will become very
 	  noisy if they are called inside atomic sections: when a spinlock is
-- 
2.20.1


  reply	other threads:[~2020-10-29 16:50 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-29 16:50 [PATCH 01/16] rcu/tree: Add a work to allocate pages from regular context Uladzislau Rezki (Sony)
2020-10-29 16:50 ` Uladzislau Rezki (Sony) [this message]
2020-10-29 16:50 ` [PATCH 03/16] preempt: Make preempt count unconditional Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 04/16] preempt: Cleanup PREEMPT_COUNT leftovers Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 05/16] lockdep: " Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 06/16] mm/pagemap: " Uladzislau Rezki (Sony)
2020-10-29 20:57   ` Uladzislau Rezki
2020-10-29 21:26     ` Paul E. McKenney
2020-10-29 16:50 ` [PATCH 07/16] locking/bitspinlock: " Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 08/16] uaccess: " Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 09/16] sched: " Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 10/16] ARM: " Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 11/16] xtensa: " Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 12/16] drm/i915: " Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 13/16] rcutorture: " Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 14/16] preempt: Remove PREEMPT_COUNT from Kconfig Uladzislau Rezki (Sony)
2020-10-29 16:50 ` [PATCH 15/16] rcu/tree: Allocate a page when caller is preemptible Uladzislau Rezki (Sony)
2020-11-03 18:03   ` Joel Fernandes
2020-11-04 11:39     ` Uladzislau Rezki
2020-11-04 14:36       ` Joel Fernandes
2020-10-29 16:50 ` [PATCH 16/16] rcu/tree: Use delayed work instead of hrtimer to refill the cache Uladzislau Rezki (Sony)
2020-10-29 19:47   ` Paul E. McKenney
2020-10-29 20:13     ` Uladzislau Rezki
2020-10-29 20:22       ` Uladzislau Rezki
2020-10-29 20:33         ` Paul E. McKenney
2020-10-29 21:00           ` Uladzislau Rezki
2020-11-03 15:47 ` [PATCH 01/16] rcu/tree: Add a work to allocate pages from regular context Joel Fernandes
2020-11-03 16:33   ` Uladzislau Rezki
2020-11-03 19:18     ` Paul E. McKenney
2020-11-04 12:35       ` Uladzislau Rezki
2020-11-04 14:12         ` Paul E. McKenney
2020-11-04 14:40           ` Uladzislau Rezki
2020-11-03 17:54 ` Joel Fernandes
2020-11-04 12:12   ` Uladzislau Rezki
2020-11-04 15:01     ` Joel Fernandes
2020-11-04 18:38       ` Uladzislau Rezki

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