Messages in this thread Patch in this message | | | Date | Mon, 07 Jan 2019 14:52:57 -0500 | From | Steven Rostedt <> | Subject | [PATCH RT 05/13] sched/migrate_disable: Add export_symbol_gpl for __migrate_disabled |
| |
4.14.87-rt50-rc1 stable review patch. If anyone has any objections, please let me know.
------------------
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
[ Upstream commit c0f0dd3ced7abe307d8e89477dae2929e488ba6c ]
Jonathan reported that lttng/modules can't use __migrate_disabled(). This function is only used by sched/core itself and the tracing infrastructure to report the migrate counter (lttng does probably the same). Since the rework migrate_disable() it moved from sched.h to preempt.h and is became an exported function instead of a "static inline" due to the header recursion of preempt vs sched.
Since the compiler inlines the function for sched/core usage, add a EXPORT_SYMBOL_GPL to allow the module/LTTNG usage.
Reported-by: Jonathan Rajott <jonathan.rajotte-julien@efficios.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> --- kernel/sched/core.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 6ce950f24a7f..7c960cf07e7b 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1112,6 +1112,7 @@ int __migrate_disabled(struct task_struct *p) { return p->migrate_disable; } +EXPORT_SYMBOL_GPL(__migrate_disabled); #endif static void __do_set_cpus_allowed_tail(struct task_struct *p, -- 2.19.2
| |