Hi Nicolas, Thank you for the patch! Yet something to improve: [auto build test ERROR on linux/master] [also build test ERROR on tip/perf/core kees/for-next/pstore linus/master v5.8-rc2 next-20200624] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Nicolas-Boichat/kernel-trace-Add-TRACING_ALLOW_PRINTK-config-option/20200624-164815 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5e857ce6eae7ca21b2055cca4885545e29228fe2 config: microblaze-randconfig-r026-20200624 (attached as .config) compiler: microblaze-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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): In file included from include/linux/bits.h:23, from include/linux/bitops.h:5, from include/linux/kernel.h:12, from include/asm-generic/bug.h:19, from ./arch/microblaze/include/generated/asm/bug.h:1, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/mm.h:9, from include/linux/ring_buffer.h:5, from kernel/trace/ring_buffer_benchmark.c:7: kernel/trace/ring_buffer_benchmark.c: In function 'ring_buffer_producer': >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ >> include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ >> kernel/trace/ring_buffer_benchmark.c:245:2: note: in expansion of macro 'trace_printk' 245 | trace_printk("Starting ring buffer hammer\n"); | ^~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ >> include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:284:2: note: in expansion of macro 'trace_printk' 284 | trace_printk("End ring buffer hammer\n"); | ^~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ >> include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:303:3: note: in expansion of macro 'trace_printk' 303 | trace_printk("ERROR!\n"); | ^~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ >> include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:307:4: note: in expansion of macro 'trace_printk' 307 | trace_printk("Running Consumer at nice: %d\n", | ^~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ >> include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:310:4: note: in expansion of macro 'trace_printk' 310 | trace_printk("Running Consumer at SCHED_FIFO %d\n", | ^~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ >> include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:314:3: note: in expansion of macro 'trace_printk' 314 | trace_printk("Running Producer at nice: %d\n", | ^~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ >> include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:317:3: note: in expansion of macro 'trace_printk' 317 | trace_printk("Running Producer at SCHED_FIFO %d\n", | ^~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ >> include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:323:3: note: in expansion of macro 'trace_printk' 323 | trace_printk("WARNING!!! This test is running at lowest priority.\n"); | ^~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ >> include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:325:2: note: in expansion of macro 'trace_printk' 325 | trace_printk("Time: %lld (usecs)\n", time); | ^~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:326:2: note: in expansion of macro 'trace_printk' 326 | trace_printk("Overruns: %lld\n", overruns); | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:328:3: note: in expansion of macro 'trace_printk' 328 | trace_printk("Read: (reader disabled)\n"); | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:330:3: note: in expansion of macro 'trace_printk' 330 | trace_printk("Read: %ld (by %s)\n", read, | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:332:2: note: in expansion of macro 'trace_printk' 332 | trace_printk("Entries: %lld\n", entries); | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:333:2: note: in expansion of macro 'trace_printk' 333 | trace_printk("Total: %lld\n", entries + overruns + read); | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:334:2: note: in expansion of macro 'trace_printk' 334 | trace_printk("Missed: %ld\n", missed); | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:335:2: note: in expansion of macro 'trace_printk' 335 | trace_printk("Hit: %ld\n", hit); | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:342:3: note: in expansion of macro 'trace_printk' 342 | trace_printk("TIME IS ZERO??\n"); | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:344:2: note: in expansion of macro 'trace_printk' 344 | trace_printk("Entries per millisec: %ld\n", hit); | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:349:3: note: in expansion of macro 'trace_printk' 349 | trace_printk("%ld ns per entry\n", avg); | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/kernel.h:725:2: note: in expansion of macro '__static_assert' 725 | __static_assert( \ | ^~~~~~~~~~~~~~~ kernel/trace/ring_buffer_benchmark.c:356:3: note: in expansion of macro 'trace_printk' 356 | trace_printk("Total iterations per millisec: %ld\n", | ^~~~~~~~~~~~ include/linux/build_bug.h:78:41: error: static assertion failed: "trace_printk called, please enable CONFIG_TRACING_ALLOW_PRINTK." 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) vim +78 include/linux/build_bug.h bc6245e5efd70c Ian Abbott 2017-07-10 60 6bab69c65013be Rasmus Villemoes 2019-03-07 61 /** 6bab69c65013be Rasmus Villemoes 2019-03-07 62 * static_assert - check integer constant expression at build time 6bab69c65013be Rasmus Villemoes 2019-03-07 63 * 6bab69c65013be Rasmus Villemoes 2019-03-07 64 * static_assert() is a wrapper for the C11 _Static_assert, with a 6bab69c65013be Rasmus Villemoes 2019-03-07 65 * little macro magic to make the message optional (defaulting to the 6bab69c65013be Rasmus Villemoes 2019-03-07 66 * stringification of the tested expression). 6bab69c65013be Rasmus Villemoes 2019-03-07 67 * 6bab69c65013be Rasmus Villemoes 2019-03-07 68 * Contrary to BUILD_BUG_ON(), static_assert() can be used at global 6bab69c65013be Rasmus Villemoes 2019-03-07 69 * scope, but requires the expression to be an integer constant 6bab69c65013be Rasmus Villemoes 2019-03-07 70 * expression (i.e., it is not enough that __builtin_constant_p() is 6bab69c65013be Rasmus Villemoes 2019-03-07 71 * true for expr). 6bab69c65013be Rasmus Villemoes 2019-03-07 72 * 6bab69c65013be Rasmus Villemoes 2019-03-07 73 * Also note that BUILD_BUG_ON() fails the build if the condition is 6bab69c65013be Rasmus Villemoes 2019-03-07 74 * true, while static_assert() fails the build if the expression is 6bab69c65013be Rasmus Villemoes 2019-03-07 75 * false. 6bab69c65013be Rasmus Villemoes 2019-03-07 76 */ 6bab69c65013be Rasmus Villemoes 2019-03-07 77 #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr) 6bab69c65013be Rasmus Villemoes 2019-03-07 @78 #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) 6bab69c65013be Rasmus Villemoes 2019-03-07 79 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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