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sched/preempt: Decouple HAVE_PREEMPT_DYNAMIC from GENERIC_ENTRY

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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: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20220214165216.2231574-5-mark.rutland@arm.com
This commit is contained in:
Mark Rutland 2022-02-14 16:52:13 +00:00 committed by Peter Zijlstra
parent 4624a14f4d
commit 33c64734be
2 changed files with 2 additions and 1 deletions
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1
arch/Kconfig
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@ -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

2
kernel/sched/core.c
View File

@ -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