[sashal-linux-stable:queue-4.9 48/79] drivers/hwtracing/coresight/coresight-etb10.c:282:10: error: 'event' undeclared

[sashal-linux-stable:queue-4.9 48/79] drivers/hwtracing/coresight/coresight-etb10.c:282:10: error: 'event' undeclared

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-4.9
head:   4148278970e6bb725edb3fd5cc91c3d83cc16a97
commit: 952a760ef9c2b1d0781828b98d796d67b3faa543 [48/79] coresight: etb10: Do not call smp_processor_id from preemptible
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 952a760ef9c2b1d0781828b98d796d67b3faa543
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=arm 

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

All error/warnings (new ones prefixed by >>):

   drivers/hwtracing/coresight/coresight-etb10.c: In function 'etb_alloc_buffer':
>> drivers/hwtracing/coresight/coresight-etb10.c:282:10: error: 'event' undeclared (first use in this function)
     node = (event->cpu == -1) ? NUMA_NO_NODE : cpu_to_node(event->cpu);
             ^~~~~
   drivers/hwtracing/coresight/coresight-etb10.c:282:10: note: each undeclared identifier is reported only once for each function it appears in
   In file included from arch/arm/include/asm/topology.h:34:0,
                    from include/linux/topology.h:35,
                    from include/linux/gfp.h:8,
                    from include/linux/percpu_counter.h:15,
                    from include/linux/quota.h:40,
                    from include/linux/fs.h:272,
                    from include/linux/seq_file.h:10,
                    from include/linux/pinctrl/consumer.h:17,
                    from include/linux/pinctrl/devinfo.h:21,
                    from include/linux/device.h:24,
                    from drivers/hwtracing/coresight/coresight-etb10.c:19:
   include/asm-generic/topology.h:35:38: warning: left-hand operand of comma expression has no effect [-Wunused-value]
    #define cpu_to_node(cpu) ((void)(cpu),0)
                                         ^
>> drivers/hwtracing/coresight/coresight-etb10.c:282:45: note: in expansion of macro 'cpu_to_node'
     node = (event->cpu == -1) ? NUMA_NO_NODE : cpu_to_node(event->cpu);
                                                ^~~~~~~~~~~

vim +/event +282 drivers/hwtracing/coresight/coresight-etb10.c

   275	
   276	static void *etb_alloc_buffer(struct coresight_device *csdev, int cpu,
   277				      void **pages, int nr_pages, bool overwrite)
   278	{
   279		int node;
   280		struct cs_buffers *buf;
   281	
 > 282		node = (event->cpu == -1) ? NUMA_NO_NODE : cpu_to_node(event->cpu);
   283	
   284		buf = kzalloc_node(sizeof(struct cs_buffers), GFP_KERNEL, node);
   285		if (!buf)
   286			return NULL;
   287	
   288		buf->snapshot = overwrite;
   289		buf->nr_pages = nr_pages;
   290		buf->data_pages = pages;
   291	
   292		return buf;
   293	}
   294	

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org Intel Corporation

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