tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.9.y head: f022ed13f4d94a0b1bf5ec9e1f08e964f6878d55 commit: fc5382d70826c92e90d9efa90a4c671efe15f268 [967/1457] coresight: Make sysfs functional on topologies with per core sink config: arm-randconfig-r033-20201115 (attached as .config) compiler: arm-linux-gnueabi-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/stable/linux-stable-rc.gi... git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git fetch --no-tags linux-stable-rc linux-5.9.y git checkout fc5382d70826c92e90d9efa90a4c671efe15f268 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/hwtracing/coresight/coresight-etm-perf.c: In function 'etm_setup_aux': 226 | sink = coresight_get_enabled_sink(true); | ^~~~ | | | int In file included from drivers/hwtracing/coresight/coresight-etm-perf.h:11, from drivers/hwtracing/coresight/coresight-etm-perf.c:21: drivers/hwtracing/coresight/coresight-priv.h:152:1: note: expected 'struct coresight_device *' but argument is of type 'int' 152 | coresight_get_enabled_sink(struct coresight_device *source); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/coresight_get_enabled_sink +226 drivers/hwtracing/coresight/coresight-etm-perf.c 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 206 840018668ce2d96 Mathieu Poirier 2019-01-31 207 static void *etm_setup_aux(struct perf_event *event, void **pages, 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 208 int nr_pages, bool overwrite) 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 209 { 2264439258870ed Mathieu Poirier 2019-01-31 210 u32 id; 840018668ce2d96 Mathieu Poirier 2019-01-31 211 int cpu = event->cpu; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 212 cpumask_t *mask; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 213 struct coresight_device *sink; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 214 struct etm_event_data *event_data = NULL; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 215 840018668ce2d96 Mathieu Poirier 2019-01-31 216 event_data = alloc_event_data(cpu); 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 217 if (!event_data) 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 218 return NULL; d755209f6afddec Suzuki K Poulose 2017-06-05 219 INIT_WORK(&event_data->work, free_event_data); 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 220 2264439258870ed Mathieu Poirier 2019-01-31 221 /* First get the selected sink from user space. */ 2264439258870ed Mathieu Poirier 2019-01-31 222 if (event->attr.config2) { 2264439258870ed Mathieu Poirier 2019-01-31 223 id = (u32)event->attr.config2; 2264439258870ed Mathieu Poirier 2019-01-31 224 sink = coresight_get_sink_by_id(id); 2264439258870ed Mathieu Poirier 2019-01-31 225 } else { d52c9750f150111 Mathieu Poirier 2016-11-29 @226 sink = coresight_get_enabled_sink(true); 2264439258870ed Mathieu Poirier 2019-01-31 227 } 2264439258870ed Mathieu Poirier 2019-01-31 228 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 229 mask = &event_data->mask; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 230 f9d81a657bb833e Suzuki K Poulose 2018-09-20 231 /* f9d81a657bb833e Suzuki K Poulose 2018-09-20 232 * Setup the path for each CPU in a trace session. We try to build f9d81a657bb833e Suzuki K Poulose 2018-09-20 233 * trace path for each CPU in the mask. If we don't find an ETM f9d81a657bb833e Suzuki K Poulose 2018-09-20 234 * for the CPU or fail to build a path, we clear the CPU from the f9d81a657bb833e Suzuki K Poulose 2018-09-20 235 * mask and continue with the rest. If ever we try to trace on those f9d81a657bb833e Suzuki K Poulose 2018-09-20 236 * CPUs, we can handle it and fail the session. f9d81a657bb833e Suzuki K Poulose 2018-09-20 237 */ 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 238 for_each_cpu(cpu, mask) { 5ecabe4a76e8cdb Suzuki K Poulose 2018-09-20 239 struct list_head *path; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 240 struct coresight_device *csdev; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 241 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 242 csdev = per_cpu(csdev_src, cpu); f9d81a657bb833e Suzuki K Poulose 2018-09-20 243 /* f9d81a657bb833e Suzuki K Poulose 2018-09-20 244 * If there is no ETM associated with this CPU clear it from f9d81a657bb833e Suzuki K Poulose 2018-09-20 245 * the mask and continue with the rest. If ever we try to trace f9d81a657bb833e Suzuki K Poulose 2018-09-20 246 * on this CPU, we handle it accordingly. f9d81a657bb833e Suzuki K Poulose 2018-09-20 247 */ f9d81a657bb833e Suzuki K Poulose 2018-09-20 248 if (!csdev) { f9d81a657bb833e Suzuki K Poulose 2018-09-20 249 cpumask_clear_cpu(cpu, mask); f9d81a657bb833e Suzuki K Poulose 2018-09-20 250 continue; f9d81a657bb833e Suzuki K Poulose 2018-09-20 251 } 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 252 bbfb8f3e4e3f10c Mike Leach 2020-07-16 253 /* bbfb8f3e4e3f10c Mike Leach 2020-07-16 254 * No sink provided - look for a default sink for one of the bbfb8f3e4e3f10c Mike Leach 2020-07-16 255 * devices. At present we only support topology where all CPUs bbfb8f3e4e3f10c Mike Leach 2020-07-16 256 * use the same sink [N:1], so only need to find one sink. The bbfb8f3e4e3f10c Mike Leach 2020-07-16 257 * coresight_build_path later will remove any CPU that does not bbfb8f3e4e3f10c Mike Leach 2020-07-16 258 * attach to the sink, or if we have not found a sink. bbfb8f3e4e3f10c Mike Leach 2020-07-16 259 */ bbfb8f3e4e3f10c Mike Leach 2020-07-16 260 if (!sink) bbfb8f3e4e3f10c Mike Leach 2020-07-16 261 sink = coresight_find_default_sink(csdev); bbfb8f3e4e3f10c Mike Leach 2020-07-16 262 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 263 /* 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 264 * Building a path doesn't enable it, it simply builds a 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 265 * list of devices from source to sink that can be 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 266 * referenced later when the path is actually needed. 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 267 */ 5ecabe4a76e8cdb Suzuki K Poulose 2018-09-20 268 path = coresight_build_path(csdev, sink); f9d81a657bb833e Suzuki K Poulose 2018-09-20 269 if (IS_ERR(path)) { f9d81a657bb833e Suzuki K Poulose 2018-09-20 270 cpumask_clear_cpu(cpu, mask); f9d81a657bb833e Suzuki K Poulose 2018-09-20 271 continue; f9d81a657bb833e Suzuki K Poulose 2018-09-20 272 } 5ecabe4a76e8cdb Suzuki K Poulose 2018-09-20 273 5ecabe4a76e8cdb Suzuki K Poulose 2018-09-20 274 *etm_event_cpu_path_ptr(event_data, cpu) = path; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 275 } 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 276 bbfb8f3e4e3f10c Mike Leach 2020-07-16 277 /* no sink found for any CPU - cannot trace */ bbfb8f3e4e3f10c Mike Leach 2020-07-16 278 if (!sink) bbfb8f3e4e3f10c Mike Leach 2020-07-16 279 goto err; bbfb8f3e4e3f10c Mike Leach 2020-07-16 280 f9d81a657bb833e Suzuki K Poulose 2018-09-20 281 /* If we don't have any CPUs ready for tracing, abort */ f9d81a657bb833e Suzuki K Poulose 2018-09-20 282 cpu = cpumask_first(mask); f9d81a657bb833e Suzuki K Poulose 2018-09-20 283 if (cpu >= nr_cpu_ids) 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 284 goto err; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 285 02d5c897a091f8e Mathieu Poirier 2019-04-25 286 if (!sink_ops(sink)->alloc_buffer || !sink_ops(sink)->free_buffer) 02d5c897a091f8e Mathieu Poirier 2019-04-25 287 goto err; 02d5c897a091f8e Mathieu Poirier 2019-04-25 288 f9d81a657bb833e Suzuki K Poulose 2018-09-20 289 /* Allocate the sink buffer for this session */ 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 290 event_data->snk_config = a0f08a6a9fee0ce Mathieu Poirier 2019-04-25 291 sink_ops(sink)->alloc_buffer(sink, event, pages, 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 292 nr_pages, overwrite); 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 293 if (!event_data->snk_config) 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 294 goto err; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 295 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 296 out: 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 297 return event_data; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 298 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 299 err: 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 300 etm_free_aux(event_data); 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 301 event_data = NULL; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 302 goto out; 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 303 } 0bcbf2e30ff2271 Mathieu Poirier 2016-02-17 304 :::::: The code at line 226 was first introduced by commit :::::: d52c9750f150111dc7f73e4036f6948b20c9f8c3 coresight: reset "enable_sink" flag when need be :::::: TO: Mathieu Poirier <mathieu.poirier(a)linaro.org&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org