This doesn't seem to be required at all.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 rust/helpers/helpers.c |  1 -
 rust/helpers/mutex.c   | 15 ---------------
 2 files changed, 16 deletions(-)
 delete mode 100644 rust/helpers/mutex.c

diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c
index 875e1fed81c24..61ace53675c04 100644
--- a/rust/helpers/helpers.c
+++ b/rust/helpers/helpers.c
@@ -9,7 +9,6 @@
 
 #include "bug.c"
 #include "build_assert.c"
-#include "mutex.c"
 #include "page.c"
 #include "rbtree.c"
 #include "refcount.c"
diff --git a/rust/helpers/mutex.c b/rust/helpers/mutex.c
deleted file mode 100644
index a17ca8cdb50ca..0000000000000
--- a/rust/helpers/mutex.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <linux/export.h>
-#include <linux/mutex.h>
-
-void rust_helper_mutex_lock(struct mutex *lock)
-{
-	mutex_lock(lock);
-}
-
-void rust_helper___mutex_init(struct mutex *mutex, const char *name,
-			      struct lock_class_key *key)
-{
-	__mutex_init(mutex, name, key);
-}
-- 
2.47.0

Hi Alistair,

kernel test robot noticed the following build errors:

[auto build test ERROR on v6.12-rc6]
[also build test ERROR on linus/master]
[cannot apply to rust/rust-next next-20241106]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Alistair-Francis/rust-bindings-Support-some-inline-static-functions/20241107-101321
base:   v6.12-rc6
patch link:    https://lore.kernel.org/r/20241107020831.1561063-7-alistair.francis%40wdc.com
patch subject: [PATCH 06/13] rust: helpers: Remove mutex helper
config: arm64-randconfig-003-20241107 (https://download.01.org/0day-ci/archive/20241107/202411071903.OV35vZIP-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241107/202411071903.OV35vZIP-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411071903.OV35vZIP-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/arm64/kernel/asm-offsets.c:12:
   In file included from include/linux/ftrace.h:13:
   In file included from include/linux/kallsyms.h:13:
   In file included from include/linux/mm.h:2213:
   include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   504 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   505 |                            item];
   |                            ~~~~
   include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   511 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   512 |                            NR_VM_NUMA_EVENT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
   518 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
   |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   524 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   525 |                            NR_VM_NUMA_EVENT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~~
   4 warnings generated.
   In file included from rust/helpers/helpers.c:12:
   In file included from rust/helpers/page.c:4:
   In file included from include/linux/highmem.h:8:
   In file included from include/linux/cacheflush.h:5:
   In file included from arch/arm64/include/asm/cacheflush.h:11:
   In file included from include/linux/kgdb.h:19:
   In file included from include/linux/kprobes.h:28:
   In file included from include/linux/ftrace.h:13:
   In file included from include/linux/kallsyms.h:13:
   In file included from include/linux/mm.h:2213:
   include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   504 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   505 |                            item];
   |                            ~~~~
   include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   511 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   512 |                            NR_VM_NUMA_EVENT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
   518 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
   |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   524 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~ ^
   525 |                            NR_VM_NUMA_EVENT_ITEMS +
   |                            ~~~~~~~~~~~~~~~~~~~~~~
   4 warnings generated.
   clang diag: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
   clang diag: include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
   rust/extern.c:1:10: fatal error: 'bindings/bindings_helper.h' file not found
   1 | #include "bindings/bindings_helper.h"
   |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 error generated.
   make[3]: *** [scripts/Makefile.build:229: rust/extern.o] Error 1 shuffle=940008358
>> error[E0425]: cannot find function `mutex_lock` in crate `bindings`
   --> rust/kernel/sync/lock/mutex.rs:110:28
   |
   110   |         unsafe { bindings::mutex_lock(ptr) };
   |                            ^^^^^^^^^^ help: a function with a similar name exists: `mutex_unlock`
   |
   ::: rust/bindings/bindings_generated.rs:24140:5
   |
   24140 |     pub fn mutex_unlock(lock: *mut mutex);
   |     ------------------------------------- similarly named function `mutex_unlock` defined here

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki