Messages in this thread | | | Date | Sun, 18 Oct 2015 22:32:26 +0800 | From | kbuild test robot <> | Subject | Re: [PATCH 2/3] tracing: Make tracing work when debugfs is not compiled or initialized. |
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Hi Jiaxing,
[auto build test ERROR on tip/perf/core -- if it's inappropriate base, please suggest rules for selecting the more suitable base]
url: https://github.com/0day-ci/linux/commits/Jiaxing-Wang/Some-tracing-fixes/20151018-200252 config: arm-omap2plus_defconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm
All error/warnings (new ones prefixed by >>):
kernel/trace/trace.c: In function 'tracing_init_dentry': >> kernel/trace/trace.c:6737:3: error: implicit declaration of function 'debugfs_create_automount' [-Werror=implicit-function-declaration] traced = debugfs_create_automount("tracing", NULL, ^ >> kernel/trace/trace.c:6737:10: warning: assignment makes pointer from integer without a cast traced = debugfs_create_automount("tracing", NULL, ^ cc1: some warnings being treated as errors
vim +/debugfs_create_automount +6737 kernel/trace/trace.c
6731 /* 6732 * As there may still be users that expect the tracing 6733 * files to exist in debugfs/tracing, we must automount 6734 * the tracefs file system there, so older tools still 6735 * work with the newer kerenl. 6736 */ > 6737 traced = debugfs_create_automount("tracing", NULL, 6738 trace_automount, NULL); 6739 if (!traced) 6740 pr_warn_once("Could not create debugfs directory 'tracing'\n");
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