linux-kernel - rust/helpers/jump_label.c:10:5: sparse: sparse: symbol 'rust_helper_static_key_count' was not declared. Should it be static?

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Message-ID: <202411271011.gFsgMWRv-lkp@intel.com>
Date: Wed, 27 Nov 2024 10:37:54 +0800
From: kernel test robot <lkp@...el.com>
To: Alice Ryhl <aliceryhl@...gle.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	"Steven Rostedt (Google)" <rostedt@...dmis.org>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>
Subject: rust/helpers/jump_label.c:10:5: sparse: sparse: symbol
 'rust_helper_static_key_count' was not declared. Should it be static?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b50ecc5aca4d18f1f0c4942f5c797bc85edef144
commit: 6e59bcc9c8adec9a5bbedfa95a89946c56c510d9 rust: add static_branch_unlikely for static_key_false
date:   3 weeks ago
config: um-randconfig-r111-20241126 (https://download.01.org/0day-ci/archive/20241127/202411271011.gFsgMWRv-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/20241127/202411271011.gFsgMWRv-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411271011.gFsgMWRv-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
>> rust/helpers/jump_label.c:10:5: sparse: sparse: symbol 'rust_helper_static_key_count' was not declared. Should it be static?
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/mutex.c:11:6: sparse: sparse: symbol 'rust_helper___mutex_init' was not declared. Should it be static?
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/helpers.c: note: in included file:
   rust/helpers/spinlock.c:16:6: sparse: sparse: context imbalance in 'rust_helper_spin_lock' - wrong count at exit
   rust/helpers/spinlock.c:21:6: sparse: sparse: context imbalance in 'rust_helper_spin_unlock' - unexpected unlock

vim +/rust_helper_static_key_count +10 rust/helpers/jump_label.c

     8	
     9	#ifndef CONFIG_JUMP_LABEL
  > 10	int rust_helper_static_key_count(struct static_key *key)

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https://github.com/intel/lkp-tests/wiki