[jolsa-perf:bpf/tracing_multi_6 4/24] kernel/bpf/trampoline.c:767:12: warning: 'bpf_trampoline_update' defined but not used

[kernel test robot <lkp@intel.com>]

Hi Jiri,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/tracing_multi_6
head:   af446b2f2e0f478bc501b1791673d2aa5994101b
commit: ae934a5d41127a973581eb684721b967d5cf8a0c [4/24] bpf: Add struct bpf_trampoline_ops object
config: sparc64-randconfig-001-20260306 (https://download.01.org/0day-ci/archive/20260306/202603061049.APFgL04A-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 14.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260306/202603061049.APFgL04A-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/202603061049.APFgL04A-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/bpf/trampoline.c:767:12: warning: 'bpf_trampoline_update' defined but not used [-Wunused-function]
     767 | static int bpf_trampoline_update(struct bpf_trampoline *tr, bool lock_direct_mutex)
         |            ^~~~~~~~~~~~~~~~~~~~~


vim +/bpf_trampoline_update +767 kernel/bpf/trampoline.c

   766	
 > 767	static int bpf_trampoline_update(struct bpf_trampoline *tr, bool lock_direct_mutex)
   768	{
   769		return bpf_trampoline_update_ops(tr, lock_direct_mutex, &trampoline_ops, NULL);
   770	}
   771	

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