tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 2ce949a800b76538410170a027def9b8f24f791a commit: 9119da1439390ea4f29a0635652248aa3c2040f0 [2730/7378] arm_mpam: resctrl: Allow resctrl to allocate monitors config: arm64-randconfig-r131-20240412 (https://download.01.org/0day-ci/archive/20240413/202404130113.aJEKDEIq-lkp@i...) compiler: aarch64-linux-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20240413/202404130113.aJEKDEIq-lkp@i...)

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/202404130113.aJEKDEIq-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)

...

drivers/platform/mpam/mpam_resctrl.c:25:1: sparse: sparse: symbol 'resctrl_mon_ctx_waiters' was not declared. Should it be static? drivers/platform/mpam/mpam_resctrl.c:45:5: sparse: sparse: symbol '__mon_is_rmid_idx' was not declared. Should it be static? drivers/platform/mpam/mpam_resctrl.c:46:6: sparse: sparse: symbol 'mon_is_rmid_idx' was not declared. Should it be static?

drivers/platform/mpam/mpam_resctrl.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/slab.h, ...): include/linux/page-flags.h:245:46: sparse: sparse: self-comparison always evaluates to false

vim +/resctrl_mon_ctx_waiters +25 drivers/platform/mpam/mpam_resctrl.c

24

25 DECLARE_WAIT_QUEUE_HEAD(resctrl_mon_ctx_waiters);

26 27 /* 28 * The classes we've picked to map to resctrl resources. 29 * Class pointer may be NULL. 30 */ 31 static struct mpam_resctrl_res mpam_resctrl_exports[RDT_NUM_RESOURCES]; 32 33 static bool exposed_alloc_capable; 34 static bool exposed_mon_capable; 35 static struct mpam_class *mbm_local_class; 36 static struct mpam_class *mbm_total_class; 37 38 /* 39 * MPAM emulates CDP by setting different PARTID in the I/D fields of MPAM1_EL1. 40 * This applies globally to all traffic the CPU generates. 41 */ 42 static bool cdp_enabled; 43 44 /* A dummy mon context to use when the monitors were allocated up front */

45 u32 __mon_is_rmid_idx = USE_RMID_IDX; 46 void *mon_is_rmid_idx = &__mon_is_rmid_idx;

47