linux-kernel - Re: [PATCH 4/5] arm64/fpsimd: Require kernel NEON begin/end calls from the same scope

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Message-ID: <202509220514.RnYqxP9V-lkp@intel.com>
Date: Mon, 22 Sep 2025 05:58:14 +0800
From: kernel test robot <lkp@...el.com>
To: Ard Biesheuvel <ardb+git@...gle.com>,
	linux-arm-kernel@...ts.infradead.org
Cc: oe-kbuild-all@...ts.linux.dev, linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org, herbert@...dor.apana.org.au,
	ebiggers@...nel.org, Ard Biesheuvel <ardb@...nel.org>,
	Marc Zyngier <maz@...nel.org>, Will Deacon <will@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Kees Cook <keescook@...omium.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH 4/5] arm64/fpsimd: Require kernel NEON begin/end calls
 from the same scope

Hi Ard,

kernel test robot noticed the following build errors:

[auto build test ERROR on f83ec76bf285bea5727f478a68b894f5543ca76e]

url:    https://github.com/intel-lab-lkp/linux/commits/Ard-Biesheuvel/crypto-arm64-aes-ce-ccm-Avoid-pointless-yield-of-the-NEON-unit/20250918-143859
base:   f83ec76bf285bea5727f478a68b894f5543ca76e
patch link:    https://lore.kernel.org/r/20250918063539.2640512-11-ardb%2Bgit%40google.com
patch subject: [PATCH 4/5] arm64/fpsimd: Require kernel NEON begin/end calls from the same scope
config: arm64-randconfig-r132-20250920 (https://download.01.org/0day-ci/archive/20250922/202509220514.RnYqxP9V-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250922/202509220514.RnYqxP9V-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/202509220514.RnYqxP9V-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:27:
   drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c: In function 'dc_fpu_begin':
>> drivers/gpu/drm/amd/amdgpu/../display/dc/dc_trace.h:42:9: error: expected 'while' before 'trace_dcn_fpu'
      42 |         trace_dcn_fpu(begin, function, line, ref_count)
         |         ^~~~~~~~~~~~~
   drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:86:9: note: in expansion of macro 'TRACE_DCN_FPU'
      86 |         TRACE_DCN_FPU(true, function_name, line, depth);
         |         ^~~~~~~~~~~~~
>> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:106:11: error: 'else' without a previous 'if'
     106 |         } else {
         |           ^~~~
   drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c: At top level:
>> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:99:6: warning: 'dc_fpu_end' defined but not used [-Wunused-function]
      99 | void dc_fpu_end(const char *function_name, const int line)
         |      ^~~~~~~~~~


vim +42 drivers/gpu/drm/amd/amdgpu/../display/dc/dc_trace.h

8b198f6e94d669 Rodrigo Siqueira 2020-09-09  25  
8b198f6e94d669 Rodrigo Siqueira 2020-09-09  26  #define TRACE_DC_PIPE_STATE(pipe_ctx, index, max_pipes) \
8b198f6e94d669 Rodrigo Siqueira 2020-09-09  27  	for (index = 0; index < max_pipes; ++index) { \
8b198f6e94d669 Rodrigo Siqueira 2020-09-09  28  		struct pipe_ctx *pipe_ctx = &dc->current_state->res_ctx.pipe_ctx[index]; \
8b198f6e94d669 Rodrigo Siqueira 2020-09-09  29  		if (pipe_ctx->plane_state) \
8b198f6e94d669 Rodrigo Siqueira 2020-09-09  30  			trace_amdgpu_dm_dc_pipe_state(pipe_ctx->pipe_idx, pipe_ctx->plane_state, \
8b198f6e94d669 Rodrigo Siqueira 2020-09-09  31  						      pipe_ctx->stream, &pipe_ctx->plane_res, \
8b198f6e94d669 Rodrigo Siqueira 2020-09-09  32  						      pipe_ctx->update_flags.raw); \
8b198f6e94d669 Rodrigo Siqueira 2020-09-09  33  	}
13b5ca42ca9c96 Rodrigo Siqueira 2020-09-10  34  
13b5ca42ca9c96 Rodrigo Siqueira 2020-09-10  35  #define TRACE_DCE_CLOCK_STATE(dce_clocks) \
13b5ca42ca9c96 Rodrigo Siqueira 2020-09-10  36  	trace_amdgpu_dm_dce_clocks_state(dce_clocks)
13b5ca42ca9c96 Rodrigo Siqueira 2020-09-10  37  
13b5ca42ca9c96 Rodrigo Siqueira 2020-09-10  38  #define TRACE_DCN_CLOCK_STATE(dcn_clocks) \
13b5ca42ca9c96 Rodrigo Siqueira 2020-09-10  39  	trace_amdgpu_dm_dc_clocks_state(dcn_clocks)
96ee63730fa306 Rodrigo Siqueira 2021-07-26  40  
2d8471dc371f36 Rodrigo Siqueira 2021-07-26  41  #define TRACE_DCN_FPU(begin, function, line, ref_count) \
2d8471dc371f36 Rodrigo Siqueira 2021-07-26 @42  	trace_dcn_fpu(begin, function, line, ref_count)

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