linux-kernel - [atishp04:sbi_pmu_v6 12/17] drivers/perf/riscv_pmu_legacy.c:76: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst

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Date:   Sun, 20 Feb 2022 18:17:22 +0800
From:   kernel test robot <lkp@...el.com>
To:     Atish Patra <atish.patra@....com>
Cc:     kbuild-all@...ts.01.org, Atish Patra <Atish.Patra@....com>,
        linux-kernel@...r.kernel.org, Anup Patel <anup@...infault.org>,
        linux-doc@...r.kernel.org
Subject: [atishp04:sbi_pmu_v6 12/17] drivers/perf/riscv_pmu_legacy.c:76:
 warning: This comment starts with '/**', but isn't a kernel-doc comment.
 Refer Documentation/doc-guide/kernel-doc.rst

tree:   https://github.com/atishp04/linux sbi_pmu_v6
head:   876094386d4f915d81ec2ee5b8b412987a10d808
commit: 9cba22b308da91d7cf0781fcc18b3ad34abdf9b0 [12/17] RISC-V: Add a simple platform driver for RISC-V legacy perf
config: riscv-allyesconfig (https://download.01.org/0day-ci/archive/20220220/202202201838.kdXweR8L-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/atishp04/linux/commit/9cba22b308da91d7cf0781fcc18b3ad34abdf9b0
        git remote add atishp04 https://github.com/atishp04/linux
        git fetch --no-tags atishp04 sbi_pmu_v6
        git checkout 9cba22b308da91d7cf0781fcc18b3ad34abdf9b0
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash drivers/perf/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/perf/riscv_pmu_legacy.c:76: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * This is just a simple implementation to allow legacy implementations


vim +76 drivers/perf/riscv_pmu_legacy.c

    74	
    75	/**
  > 76	 * This is just a simple implementation to allow legacy implementations
    77	 * compatible with new RISC-V PMU driver framework.
    78	 * This driver only allows reading two counters i.e CYCLE & INSTRET.
    79	 * However, it can not start or stop the counter. Thus, it is not very useful
    80	 * will be removed in future.
    81	 */
    82	static void pmu_legacy_init(struct riscv_pmu *pmu)
    83	{
    84		pr_info("Legacy PMU implementation is available\n");
    85	
    86		pmu->num_counters = RISCV_PMU_LEGACY_NUM_CTR;
    87		pmu->ctr_start = pmu_legacy_ctr_start;
    88		pmu->ctr_stop = NULL;
    89		pmu->event_map = pmu_legacy_event_map;
    90		pmu->ctr_get_idx = pmu_legacy_ctr_get_idx;
    91		pmu->ctr_get_width = NULL;
    92		pmu->ctr_clear_idx = NULL;
    93		pmu->ctr_read = pmu_legacy_read_ctr;
    94	
    95		perf_pmu_register(&pmu->pmu, "cpu", PERF_TYPE_RAW);
    96	}
    97	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org