Commit 33c64734 authored by Mark Rutland's avatar Mark Rutland Committed by Peter Zijlstra
Browse files

sched/preempt: Decouple HAVE_PREEMPT_DYNAMIC from GENERIC_ENTRY 



Now that the enabled/disabled states for the preemption functions are
declared alongside their definitions, the core PREEMPT_DYNAMIC logic is
no longer tied to GENERIC_ENTRY, and can safely be selected so long as
an architecture provides enabled/disabled states for
irqentry_exit_cond_resched().

Make it possible to select HAVE_PREEMPT_DYNAMIC without GENERIC_ENTRY.

For existing users of HAVE_PREEMPT_DYNAMIC there should be no functional
change as a result of this patch.

Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: default avatarArd Biesheuvel <ardb@kernel.org>
Acked-by: default avatarFrederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20220214165216.2231574-5-mark.rutland@arm.com
parent 4624a14f

arch/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -1279,7 +1279,6 @@ config HAVE_STATIC_CALL_INLINE 
config HAVE_PREEMPT_DYNAMIC

	bool

	depends on HAVE_STATIC_CALL

	depends on GENERIC_ENTRY

	help

	   Select this if the architecture support boot time preempt setting

	   on top of static calls. It is strongly advised to support inline

kernel/sched/core.c

+2 −0
Original line number Diff line number Diff line
@@ -8149,7 +8149,9 @@ EXPORT_SYMBOL(__cond_resched_rwlock_write); 


#ifdef CONFIG_PREEMPT_DYNAMIC



#ifdef CONFIG_GENERIC_ENTRY

#include <linux/entry-common.h>

#endif



/*

 * SC:cond_resched