rust: cpumask: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>

Author: Darksonn

rust/helpers/cpumask.c

@@ -2,67 +2,80 @@
 
 #include <linux/cpumask.h>
 
+__rust_helper
 void rust_helper_cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
 {
 	cpumask_set_cpu(cpu, dstp);
 }
 
+__rust_helper
 void rust_helper___cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
 {
 	__cpumask_set_cpu(cpu, dstp);
 }
 
+__rust_helper
 void rust_helper_cpumask_clear_cpu(int cpu, struct cpumask *dstp)
 {
 	cpumask_clear_cpu(cpu, dstp);
 }
 
+__rust_helper
 void rust_helper___cpumask_clear_cpu(int cpu, struct cpumask *dstp)
 {
 	__cpumask_clear_cpu(cpu, dstp);
 }
 
+__rust_helper
 bool rust_helper_cpumask_test_cpu(int cpu, struct cpumask *srcp)
 {
 	return cpumask_test_cpu(cpu, srcp);
 }
 
+__rust_helper
 void rust_helper_cpumask_setall(struct cpumask *dstp)
 {
 	cpumask_setall(dstp);
 }
 
+__rust_helper
 bool rust_helper_cpumask_empty(struct cpumask *srcp)
 {
 	return cpumask_empty(srcp);
 }
 
+__rust_helper
 bool rust_helper_cpumask_full(struct cpumask *srcp)
 {
 	return cpumask_full(srcp);
 }
 
+__rust_helper
 unsigned int rust_helper_cpumask_weight(struct cpumask *srcp)
 {
 	return cpumask_weight(srcp);
 }
 
+__rust_helper
 void rust_helper_cpumask_copy(struct cpumask *dstp, const struct cpumask *srcp)
 {
 	cpumask_copy(dstp, srcp);
 }
 
+__rust_helper
 bool rust_helper_alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
 {
 	return alloc_cpumask_var(mask, flags);
 }
 
+__rust_helper
 bool rust_helper_zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
 {
 	return zalloc_cpumask_var(mask, flags);
 }
 
 #ifndef CONFIG_CPUMASK_OFFSTACK
+__rust_helper
 void rust_helper_free_cpumask_var(cpumask_var_t mask)
 {
 	free_cpumask_var(mask);