A subsequent patch calls cpuset_cpus_allowed() in the vfio driver pci
code. Export the symbol to be able to build the vfio driver as a kernel
module.
This is not enough, however: when CONFIG_CPUSETS is _not_ defined
cpuset_cpus_allowed() is an inline function returning
task_cpu_possible_mask(). For the arm64 architecture this function is
also inline: it checks the arm64_mismatched_32bit_el0 static key and
calls system_32bit_el0_cpumask(). We need to export those symbols as
well.
Signed-off-by: Fred Griffoul <[email protected]>
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
---
arch/arm64/kernel/cpufeature.c | 2 ++
kernel/cgroup/cpuset.c | 1 +
2 files changed, 3 insertions(+)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 56583677c1f2..2f1de6343bee 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -127,6 +127,7 @@ static bool __read_mostly allow_mismatched_32bit_el0;
* seen at least one CPU capable of 32-bit EL0.
*/
DEFINE_STATIC_KEY_FALSE(arm64_mismatched_32bit_el0);
+EXPORT_SYMBOL_GPL(arm64_mismatched_32bit_el0);
/*
* Mask of CPUs supporting 32-bit EL0.
@@ -1614,6 +1615,7 @@ const struct cpumask *system_32bit_el0_cpumask(void)
return cpu_possible_mask;
}
+EXPORT_SYMBOL_GPL(system_32bit_el0_cpumask);
static int __init parse_32bit_el0_param(char *str)
{
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 4237c8748715..9fd56222aa4b 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -4764,6 +4764,7 @@ void cpuset_cpus_allowed(struct task_struct *tsk, struct cpumask *pmask)
rcu_read_unlock();
spin_unlock_irqrestore(&callback_lock, flags);
}
+EXPORT_SYMBOL_GPL(cpuset_cpus_allowed);
/**
* cpuset_cpus_allowed_fallback - final fallback before complete catastrophe.
--
2.40.1