[PATCH v4 01/10] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n

[Wandun Chen <chenwandun1@gmail.com>]

From: Wandun Chen <chenwandun@lixiang.com>

Prepare for an upcoming change that excludes non-dumpable reserved
regions from the kdump vmcore and will call crash_exclude_mem_range()
from generic, non-arch code.

No functional change.

Signed-off-by: Wandun Chen <chenwandun@lixiang.com>
---
 include/linux/crash_core.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h
index c1dee3f971a9..0033d4777648 100644
--- a/include/linux/crash_core.h
+++ b/include/linux/crash_core.h
@@ -87,6 +87,12 @@ static inline int kexec_should_crash(struct task_struct *p) { return 0; }
 static inline int kexec_crash_loaded(void) { return 0; }
 static inline void crash_save_cpu(struct pt_regs *regs, int cpu) {};
 static inline int kimage_crash_copy_vmcoreinfo(struct kimage *image) { return 0; };
+static inline int crash_exclude_mem_range(struct crash_mem *mem,
+					  unsigned long long mstart,
+					  unsigned long long mend)
+{
+	return 0;
+}
 #endif /* CONFIG_CRASH_DUMP*/
 
 #ifdef CONFIG_CRASH_DM_CRYPT
-- 
2.43.0