lkml.org 
[lkml]   [2020]   [Sep]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] RCU: export rcu_idle_enter/_exit for loadable modules
Date
drivers/acpi/processor.ko uses rcu_idle_enter()/_exit() but
they are not exported. This causes build errors on IA64,
so export those 2 functions.

ERROR: modpost: "rcu_idle_enter" [drivers/acpi/processor.ko] undefined!
ERROR: modpost: "rcu_idle_exit" [drivers/acpi/processor.ko] undefined!

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: linux-acpi@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: rcu@vger.kernel.org
---
Is there a problem with exporting these functions for use by
loadable modules? If so, this driver should be modified not
to use rcu_idle_enter/exit.

kernel/rcu/tree.c | 2 ++
1 file changed, 2 insertions(+)

--- lnx-59-rc6.orig/kernel/rcu/tree.c
+++ lnx-59-rc6/kernel/rcu/tree.c
@@ -673,6 +673,7 @@ void rcu_idle_enter(void)
lockdep_assert_irqs_disabled();
rcu_eqs_enter(false);
}
+EXPORT_SYMBOL_GPL(rcu_idle_enter);

#ifdef CONFIG_NO_HZ_FULL
/**
@@ -886,6 +887,7 @@ void rcu_idle_exit(void)
rcu_eqs_exit(false);
local_irq_restore(flags);
}
+EXPORT_SYMBOL_GPL(rcu_idle_exit);

#ifdef CONFIG_NO_HZ_FULL
/**
\
 
 \ /
  Last update: 2020-09-22 23:44    [W:0.027 / U:31.440 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site