Hi Ravi, Thank you for the patch! Yet something to improve: [auto build test ERROR on tip/perf/core] [also build test ERROR on v4.16 next-20180403] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Ravi-Bangoria/trace_uprobe-Support-SDT-markers-having-reference-count-semaphore/20180404-201900 config: x86_64-randconfig-x019-201813 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All error/warnings (new ones prefixed by >>): >> kernel/trace/trace_uprobe.c:947:21: error: variable 'sdt_mmu_notifier_ops' has initializer but incomplete type static const struct mmu_notifier_ops sdt_mmu_notifier_ops = { ^~~~~~~~~~~~~~~~ >> kernel/trace/trace_uprobe.c:948:3: error: 'const struct mmu_notifier_ops' has no member named 'release' .release = sdt_mm_release, ^~~~~~~ >> kernel/trace/trace_uprobe.c:948:13: warning: excess elements in struct initializer .release = sdt_mm_release, ^~~~~~~~~~~~~~ kernel/trace/trace_uprobe.c:948:13: note: (near initialization for 'sdt_mmu_notifier_ops') kernel/trace/trace_uprobe.c: In function 'sdt_add_mm_list': >> kernel/trace/trace_uprobe.c:962:22: error: dereferencing pointer to incomplete type 'struct mmu_notifier' mn = kzalloc(sizeof(*mn), GFP_KERNEL); ^~~ >> kernel/trace/trace_uprobe.c:967:2: error: implicit declaration of function '__mmu_notifier_register'; did you mean 'mmu_notifier_release'? [-Werror=implicit-function-declaration] __mmu_notifier_register(mn, mm); ^~~~~~~~~~~~~~~~~~~~~~~ mmu_notifier_release kernel/trace/trace_uprobe.c: At top level: >> kernel/trace/trace_uprobe.c:947:38: error: storage size of 'sdt_mmu_notifier_ops' isn't known static const struct mmu_notifier_ops sdt_mmu_notifier_ops = { ^~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/sdt_mmu_notifier_ops +947 kernel/trace/trace_uprobe.c 946 > 947 static const struct mmu_notifier_ops sdt_mmu_notifier_ops = { > 948 .release = sdt_mm_release, 949 }; 950 951 static void sdt_add_mm_list(struct trace_uprobe *tu, struct mm_struct *mm) 952 { 953 struct mmu_notifier *mn; 954 struct sdt_mm_list *sml = kzalloc(sizeof(*sml), GFP_KERNEL); 955 956 if (!sml) 957 return; 958 sml->mm = mm; 959 list_add(&(sml->list), &(tu->sml.list)); 960 961 /* Register mmu_notifier for this mm. */ > 962 mn = kzalloc(sizeof(*mn), GFP_KERNEL); 963 if (!mn) 964 return; 965 966 mn->ops = &sdt_mmu_notifier_ops; > 967 __mmu_notifier_register(mn, mm); 968 } 969 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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