tree:   https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git habanalabs-next
head:   f3fad4c1da9034b716430407921cbd316d8c76dd
commit: 926c1bd50451e2c0e0dbec4b88a7f7ac93cbee9e [19/62] habanalabs: sync stream collective support
config: s390-allyesconfig (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git/commit/?id=926c1bd50451e2c0e0dbec4b88a7f7ac93cbee9e
        git remote add ogabbay https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git
        git fetch --no-tags ogabbay habanalabs-next
        git checkout 926c1bd50451e2c0e0dbec4b88a7f7ac93cbee9e
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 

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

All warnings (new ones prefixed by >>):

   drivers/misc/habanalabs/gaudi/gaudi.c: In function 'gaudi_collective_wait_init_cs':
>> drivers/misc/habanalabs/gaudi/gaudi.c:1032:36: warning: variable 'prop' set but not used [-Wunused-but-set-variable]
    1032 |  struct hl_sync_stream_properties *prop;
         |                                    ^~~~
   drivers/misc/habanalabs/gaudi/gaudi.c: At top level:
   drivers/misc/habanalabs/gaudi/gaudi.c:3012:6: warning: no previous prototype for 'gaudi_init_nic_qmans' [-Wmissing-prototypes]
    3012 | void gaudi_init_nic_qmans(struct hl_device *hdev)
         |      ^~~~~~~~~~~~~~~~~~~~
>> drivers/misc/habanalabs/gaudi/gaudi.c:7688:6: warning: no previous prototype for 'gaudi_ctx_fini' [-Wmissing-prototypes]
    7688 | void gaudi_ctx_fini(struct hl_ctx *ctx)
         |      ^~~~~~~~~~~~~~

vim +/prop +1032 drivers/misc/habanalabs/gaudi/gaudi.c

  1023	
  1024	static void gaudi_collective_wait_init_cs(struct hl_cs *cs)
  1025	{
  1026		struct hl_cs_compl *signal_cs_cmpl =
  1027			container_of(cs->signal_fence, struct hl_cs_compl, base_fence);
  1028		struct hl_cs_compl *cs_cmpl =
  1029			container_of(cs->fence, struct hl_cs_compl, base_fence);
  1030		struct gaudi_collective_properties *cprop;
  1031		u32 stream, queue_id, sob_group_offset;
> 1032		struct hl_sync_stream_properties *prop;
  1033		struct gaudi_device *gaudi;
  1034		struct hl_device *hdev;
  1035		struct hl_cs_job *job;
  1036		struct hl_ctx *ctx;
  1037	
  1038		ctx = cs->ctx;
  1039		hdev = ctx->hdev;
  1040		gaudi = hdev->asic_specific;
  1041		cprop = &gaudi->collective_props;
  1042	
  1043		/* copy the SOB id and value of the signal CS */
  1044		cs_cmpl->hw_sob = signal_cs_cmpl->hw_sob;
  1045		cs_cmpl->sob_val = signal_cs_cmpl->sob_val;
  1046	
  1047		/* Calculate the stream from collective master queue (1st job) */
  1048		job = list_first_entry(&cs->job_list, struct hl_cs_job, cs_node);
  1049		stream = job->hw_queue_id % 4;
  1050		sob_group_offset =
  1051			stream * HL_RSVD_SOBS + cprop->curr_sob_group_idx[stream];
  1052	
  1053		list_for_each_entry(job, &cs->job_list, cs_node) {
  1054			queue_id = job->hw_queue_id;
  1055			prop = &hdev->kernel_queues[queue_id].sync_stream_prop;
  1056	
  1057			if (hdev->kernel_queues[queue_id].collective_mode ==
  1058					HL_COLLECTIVE_MASTER) {
  1059				gaudi_collective_master_init_job(hdev, job, stream,
  1060							sob_group_offset);
  1061			} else {
  1062				gaudi_collective_slave_init_job(hdev, job, cs_cmpl);
  1063			}
  1064		}
  1065	
  1066		cs_cmpl->sob_group = sob_group_offset;
  1067	
  1068		/* Handle sob group kref and wraparound */
  1069		kref_get(&cprop->hw_sob_group[sob_group_offset].kref);
  1070		cprop->next_sob_group_val[stream]++;
  1071	
  1072		if (cprop->next_sob_group_val[stream] == HL_MAX_SOB_VAL) {
  1073			/*
  1074			 * Decrement as we reached the max value.
  1075			 * The release function won't be called here as we've
  1076			 * just incremented the refcount.
  1077			 */
  1078			kref_put(&cprop->hw_sob_group[sob_group_offset].kref,
  1079					gaudi_sob_group_reset_error);
  1080			cprop->next_sob_group_val[stream] = 1;
  1081			/* only two SOBs are currently in use */
  1082			cprop->curr_sob_group_idx[stream] =
  1083				(cprop->curr_sob_group_idx[stream] + 1) &
  1084								(HL_RSVD_SOBS - 1);
  1085	
  1086			gaudi_collective_map_sobs(hdev, stream);
  1087	
  1088			dev_dbg(hdev->dev, "switched to SOB group %d, stream: %d\n",
  1089					cprop->curr_sob_group_idx[stream], stream);
  1090		}
  1091	
  1092		/* Increment kref since all slave queues are now waiting on it */
  1093		kref_get(&cs_cmpl->hw_sob->kref);
  1094		/*
  1095		 * Must put the signal fence after the SOB refcnt increment so
  1096		 * the SOB refcnt won't turn 0 and reset the SOB before the
  1097		 * wait CS was submitted.
  1098		 */
  1099		mb();
  1100		hl_fence_put(cs->signal_fence);
  1101		cs->signal_fence = NULL;
  1102	}
  1103	

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