Re: coresight: etm4x: Report whether the PMU counts external output 1

[kernel test robot <lkp@intel.com>]

Hi Amir,

kernel test robot noticed the following build errors:



url:    https://github.com/intel-lab-lkp/linux/commits/Amir-Ayupov/coresight-Add-pmu_pulse-extout_pulse/20260930-233744
base:   
patch link:    https://lore.kernel.org/r/202610020831.SAJsxWUB-lkp%40intel.com
config: arm64-randconfig-1002-20261002 (https://download.01.org/0day-ci/archive/20261002/202610020831.SAJsxWUB-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261002/202610020831.SAJsxWUB-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/202610020831.SAJsxWUB-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/bits.h:5,
                    from include/linux/ioport.h:14,
                    from include/linux/acpi.h:13,
                    from drivers/hwtracing/coresight/coresight-etm4x-core.c:6:
   drivers/hwtracing/coresight/coresight-etm4x-core.c: In function 'etm4_pmu_has_extout1':
>> drivers/hwtracing/coresight/coresight-etm4x-core.c:1406:12: error: 'ARMV8_PMUV3_EXT_COMMON_EVENT_BASE' undeclared (first use in this function); did you mean 'ARMV8_PMU_EVTYPE_EVENT'?
               ARMV8_PMUV3_EXT_COMMON_EVENT_BASE)))
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/vdso/bits.h:8:34: note: in definition of macro 'BIT_ULL'
    #define BIT_ULL(nr)  (ULL(1) << (nr))
                                     ^~
   drivers/hwtracing/coresight/coresight-etm4x-core.c:1406:12: note: each undeclared identifier is reported only once for each function it appears in
               ARMV8_PMUV3_EXT_COMMON_EVENT_BASE)))
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/vdso/bits.h:8:34: note: in definition of macro 'BIT_ULL'
    #define BIT_ULL(nr)  (ULL(1) << (nr))
                                     ^~


vim +1406 drivers/hwtracing/coresight/coresight-etm4x-core.c

  1385	
  1386	/*
  1387	 * Check whether a PMU event can count external output 1 of this trace unit,
  1388	 * and whether the trace unit has event 1 to drive it, since event 0 is the
  1389	 * trace unit trigger. The PMU only reports whether an event is implemented,
  1390	 * not that the trace unit drives it, so also require a CPU whose manual
  1391	 * documents the connection.
  1392	 *
  1393	 * Must run on the CPU that owns the trace unit.
  1394	 */
  1395	static bool etm4_pmu_has_extout1(struct etmv4_drvdata *drvdata)
  1396	{
  1397		int pmuver = read_pmuver();
  1398	
  1399		if (!is_midr_in_range_list(etm4_pmu_extout1_cpus))
  1400			return false;
  1401	
  1402		/* PMCEID0_EL0[63:32] describe events 0x4000-0x401f from PMUv3p1 */
  1403		if (!pmuv3_implemented(pmuver) || pmuver < ID_AA64DFR0_EL1_PMUVer_V3P1)
  1404			return false;
  1405		if (!(read_pmceid0() & BIT_ULL(32 + ARMV8_PMUV3_PERFCTR_TRCEXTOUT1 -
> 1406					       ARMV8_PMUV3_EXT_COMMON_EVENT_BASE)))
  1407			return false;
  1408	
  1409		/* nr_event is TRCIDR0.NUMEVENT, the number of events minus one */
  1410		return drvdata->nr_event >= 1;
  1411	}
  1412	

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki