[jonmason-ntb:ntb-perf-latency 2/5] drivers/ntb/test/ntb_perf.c:1185:14: error: call to undeclared function 'get_random_int'; ISO C99 and later do not support implicit function declarations

[jonmason-ntb:ntb-perf-latency 2/5] drivers/ntb/test/ntb_perf.c:1185:14: error: call to undeclared function 'get_random_int'; ISO C99 and later do not support implicit function declarations

[kernel test robot]

tree:   https://github.com/jonmason/ntb ntb-perf-latency
head:   259175ed1ca5c7b82c8948657de24b15b99162d0
commit: 1361021161161af720f27081dc7cbda6e3c6f6d0 [2/5] ntb_perf: extend with poll latency measurement
config: arm-randconfig-003-20241001 (https://download.01.org/0day-ci/archive/20241001/202410010927.2eG6VtDI-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241001/202410010927.2eG6VtDI-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/202410010927.2eG6VtDI-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/ntb/test/ntb_perf.c:1185:14: error: call to undeclared function 'get_random_int'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    1185 |                         *bp = (u8)get_random_int();
         |                                   ^
   1 error generated.


vim +/get_random_int +1185 drivers/ntb/test/ntb_perf.c

  1166	
  1167	static int perf_init_pl(struct perf_poll_lat_data *pldata)
  1168	{
  1169		struct perf_ctx *perf = pldata->perf;
  1170		struct perf_peer *peer = perf->test_peer;
  1171		u8 *bp;
  1172	
  1173		pldata->src = kmalloc_node(peer->outbuf_size, GFP_KERNEL,
  1174					 dev_to_node(&perf->ntb->dev));
  1175		if (!pldata->src)
  1176			return -ENOMEM;
  1177	
  1178		/*
  1179		 * Prepare random data to send, guaranteed exclusion of 0x00 (unreceived)
  1180		 * and 0xFF (stop_word)
  1181		 */
  1182		get_random_bytes(pldata->src, peer->outbuf_size);
  1183		for (bp = pldata->src; bp < (u8 *) pldata->src + peer->outbuf_size; bp++)
  1184			while (*bp == 0 || *bp == stop_word)
> 1185				*bp = (u8)get_random_int();
  1186	
  1187		memset(peer->inbuf, 0, peer->inbuf_size);
  1188	
  1189		return 0;
  1190	}
  1191	

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