2018-10-30 12:40:05 +00:00
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Tue, 9 Oct 2018 17:34:50 +0200
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Subject: [PATCH] sched/migrate_disable: Add export_symbol_gpl for
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__migrate_disabled
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2019-02-27 18:51:46 +00:00
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.25-rt16.tar.xz
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2018-10-30 12:40:05 +00:00
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Jonathan reported that lttng/modules can't use __migrate_disabled().
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This function is only used by sched/core itself and the tracing
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infrastructure to report the migrate counter (lttng does probably the
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same). Since the rework migrate_disable() it moved from sched.h to
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preempt.h and is became an exported function instead of a "static
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inline" due to the header recursion of preempt vs sched.
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Since the compiler inlines the function for sched/core usage, add a
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EXPORT_SYMBOL_GPL to allow the module/LTTNG usage.
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Reported-by: Jonathan Rajott <jonathan.rajotte-julien@efficios.com>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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kernel/sched/core.c | 1 +
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1 file changed, 1 insertion(+)
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--- a/kernel/sched/core.c
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+++ b/kernel/sched/core.c
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2019-01-11 14:52:15 +00:00
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@@ -1011,6 +1011,7 @@ int __migrate_disabled(struct task_struc
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2018-10-30 12:40:05 +00:00
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{
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return p->migrate_disable;
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}
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+EXPORT_SYMBOL_GPL(__migrate_disabled);
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#endif
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static void __do_set_cpus_allowed_tail(struct task_struct *p,
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