The patch titled
Subject: crash_dump: is_kdump_kernel can be boolean
has been added to the -mm tree. Its filename is
crash_dump-is_kdump_kernel-can-be-boolean.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/crash_dump-is_kdump_kernel-can-be-boolean.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/crash_dump-is_kdump_kernel-can-be-boolean.patch
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------------------------------------------------------
From: Yaowei Bai <baiyaowei@xxxxxxxxxxxxxxxxxxxx>
Subject: crash_dump: is_kdump_kernel can be boolean
Make is_kdump_kernel return bool due to this particular function only
using either one or zero as its return value.
No functional change.
Link: http://lkml.kernel.org/r/1513308799-19232-8-git-send-email-baiyaowei@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Yaowei Bai <baiyaowei@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/crash_dump.h | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff -puN include/linux/crash_dump.h~crash_dump-is_kdump_kernel-can-be-boolean include/linux/crash_dump.h
--- a/include/linux/crash_dump.h~crash_dump-is_kdump_kernel-can-be-boolean
+++ a/include/linux/crash_dump.h
@@ -2,13 +2,13 @@
#ifndef LINUX_CRASH_DUMP_H
#define LINUX_CRASH_DUMP_H
-#ifdef CONFIG_CRASH_DUMP
#include <linux/kexec.h>
#include <linux/proc_fs.h>
#include <linux/elf.h>
#include <asm/pgtable.h> /* for pgprot_t */
+#ifdef CONFIG_CRASH_DUMP
#define ELFCORE_ADDR_MAX (-1ULL)
#define ELFCORE_ADDR_ERR (-2ULL)
@@ -52,13 +52,13 @@ void vmcore_cleanup(void);
* has passed the elf core header address on command line.
*
* This is not just a test if CONFIG_CRASH_DUMP is enabled or not. It will
- * return 1 if CONFIG_CRASH_DUMP=y and if kernel is booting after a panic of
- * previous kernel.
+ * return true if CONFIG_CRASH_DUMP=y and if kernel is booting after a panic
+ * of previous kernel.
*/
-static inline int is_kdump_kernel(void)
+static inline bool is_kdump_kernel(void)
{
- return (elfcorehdr_addr != ELFCORE_ADDR_MAX) ? 1 : 0;
+ return elfcorehdr_addr != ELFCORE_ADDR_MAX;
}
/* is_vmcore_usable() checks if the kernel is booting after a panic and
@@ -89,7 +89,7 @@ extern int register_oldmem_pfn_is_ram(in
extern void unregister_oldmem_pfn_is_ram(void);
#else /* !CONFIG_CRASH_DUMP */
-static inline int is_kdump_kernel(void) { return 0; }
+static inline bool is_kdump_kernel(void) { return 0; }
#endif /* CONFIG_CRASH_DUMP */
extern unsigned long saved_max_pfn;
_
Patches currently in -mm which might be from baiyaowei@xxxxxxxxxxxxxxxxxxxx are
mm-memblock-memblock_is_map-region_memory-can-be-boolean.patch
lib-lockref-__lockref_is_dead-can-be-boolean.patch
kernel-cpuset-current_cpuset_is_being_rebound-can-be-boolean.patch
kernel-resource-iomem_is_exclusive-can-be-boolean.patch
kernel-module-module_is_live-can-be-boolean.patch
kernel-mutex-mutex_is_locked-can-be-boolean.patch
crash_dump-is_kdump_kernel-can-be-boolean.patch
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