On 11/26/23 at 05:26am, kernel test robot wrote: > Hi Baoquan, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on arm64/for-next/core] > [also build test ERROR on tip/x86/core powerpc/next powerpc/fixes linus/master v6.7-rc2 next-20231124] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/Baoquan-He/kexec_file-add-kexec_file-flag-to-control-debug-printing/20231124-113942 > base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core > patch link: https://lore.kernel.org/r/20231124033642.520686-5-bhe%40redhat.com > patch subject: [PATCH v2 4/7] kexec_file, arm64: print out debugging message if required > config: arm64-randconfig-001-20231126 (https://download.01.org/0day-ci/archive/20231126/202311260548.1HaxcDnE-lkp@xxxxxxxxx/config) > compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231126/202311260548.1HaxcDnE-lkp@xxxxxxxxx/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@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202311260548.1HaxcDnE-lkp@xxxxxxxxx/ > > All errors (new ones prefixed by >>): > > >> arch/arm64/kernel/machine_kexec.c:35:2: error: implicit declaration of function 'kexec_dprintk' is invalid in C99 [-Werror,-Wimplicit-function-declaration] > kexec_dprintk("%s:%d:\n", func, line); > ^ > 1 error generated. Thanks for reporting. It has below kexec related config items, whereas the kexec_drpintk() is only defined in CONFIG_KEXEC_FILE ifdeffery scope, moving it to CONFIG_KEXEC_CORE iddeffery scope in <linux/kexec.h> can fix it as below draft code. Will update patch 1 to include the code change. === CONFIG_CRASH_CORE=y CONFIG_KEXEC_CORE=y CONFIG_KEXEC=y # CONFIG_KEXEC_FILE is not set CONFIG_CRASH_DUMP=y === diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 66997efe36f1..b457b0d70f3f 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -265,13 +265,6 @@ arch_kexec_apply_relocations(struct purgatory_info *pi, Elf_Shdr *section, } #endif -extern bool kexec_file_dbg_print; - -#define kexec_dprintk(fmt, ...) \ - printk("%s" fmt, \ - kexec_file_dbg_print ? KERN_INFO : KERN_DEBUG, \ - ##__VA_ARGS__) - #endif /* CONFIG_KEXEC_FILE */ #ifdef CONFIG_KEXEC_ELF @@ -508,6 +501,13 @@ static inline int crash_hotplug_memory_support(void) { return 0; } static inline unsigned int crash_get_elfcorehdr_size(void) { return 0; } #endif +extern bool kexec_file_dbg_print; + +#define kexec_dprintk(fmt, ...) \ + printk("%s" fmt, \ + kexec_file_dbg_print ? KERN_INFO : KERN_DEBUG, \ + ##__VA_ARGS__) + #else /* !CONFIG_KEXEC_CORE */ struct pt_regs; struct task_struct; diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c index be5642a4ec49..bddba29a1557 100644 --- a/kernel/kexec_core.c +++ b/kernel/kexec_core.c @@ -52,6 +52,8 @@ atomic_t __kexec_lock = ATOMIC_INIT(0); /* Flag to indicate we are going to kexec a new kernel */ bool kexec_in_progress = false; +bool kexec_file_dbg_print; + int kexec_should_crash(struct task_struct *p) { /* diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 7ae1b0901aa4..8f87644b4eec 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -38,8 +38,6 @@ void set_kexec_sig_enforced(void) } #endif -bool kexec_file_dbg_print; - static int kexec_calculate_store_digests(struct kimage *image); /* Maximum size in bytes for kernel/initrd files. */
