This add KEXEC_DEBUG to kexec_flags so that it can be passed to kernel when '-d' is added with kexec_load interface. With that flag enabled, kernel can enable the debugging message printing.
This patch requires support from the kexec_load debugging message of the Linux kernel[1]. [1]: https://lore.kernel.org/kexec/[email protected]/ Signed-off-by: Qiang Ma <[email protected]> --- kexec/kexec-syscall.h | 1 + kexec/kexec.c | 1 + 2 files changed, 2 insertions(+) diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h index e9bb7de..b60804f 100644 --- a/kexec/kexec-syscall.h +++ b/kexec/kexec-syscall.h @@ -120,6 +120,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd, #define KEXEC_PRESERVE_CONTEXT 0x00000002 #define KEXEC_UPDATE_ELFCOREHDR 0x00000004 #define KEXEC_CRASH_HOTPLUG_SUPPORT 0x00000008 +#define KEXEC_DEBUG 0x00000010 #define KEXEC_ARCH_MASK 0xffff0000 /* Flags for kexec file based system call */ diff --git a/kexec/kexec.c b/kexec/kexec.c index c9e4bcb..f425422 100644 --- a/kexec/kexec.c +++ b/kexec/kexec.c @@ -1518,6 +1518,7 @@ int main(int argc, char *argv[]) return 0; case OPT_DEBUG: kexec_debug = 1; + kexec_flags |= KEXEC_DEBUG; kexec_file_flags |= KEXEC_FILE_DEBUG; break; case OPT_NOIFDOWN: -- 2.20.1
