linux-kernel - [PATCH v2 1/2] mm: remove arguments of show

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Date:   Fri, 30 Jun 2023 14:22:52 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
        <linuxppc-dev@...ts.ozlabs.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        <willy@...radead.org>, Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH v2 1/2] mm: remove arguments of show_mem()

All callers of show_mem() pass 0 and NULL, so we can remove the two
arguments by directly calling __show_mem(0, NULL, MAX_NR_ZONES - 1)
in show_mem().

Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
v2: update commit log
 arch/powerpc/xmon/xmon.c  | 2 +-
 drivers/tty/sysrq.c       | 2 +-
 drivers/tty/vt/keyboard.c | 2 +-
 include/linux/mm.h        | 4 ++--
 init/initramfs.c          | 2 +-
 kernel/panic.c            | 2 +-
 6 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index fae747cc57d2..ee17270d35d0 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -1084,7 +1084,7 @@ cmds(struct pt_regs *excp)
 				memzcan();
 				break;
 			case 'i':
-				show_mem(0, NULL);
+				show_mem();
 				break;
 			default:
 				termch = cmd;
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index b6e70c5cfa17..e1df63a88aac 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -342,7 +342,7 @@ static const struct sysrq_key_op sysrq_ftrace_dump_op = {
 
 static void sysrq_handle_showmem(int key)
 {
-	show_mem(0, NULL);
+	show_mem();
 }
 static const struct sysrq_key_op sysrq_showmem_op = {
 	.handler	= sysrq_handle_showmem,
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index be8313cdbac3..358f216c6cd6 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -606,7 +606,7 @@ static void fn_scroll_back(struct vc_data *vc)
 
 static void fn_show_mem(struct vc_data *vc)
 {
-	show_mem(0, NULL);
+	show_mem();
 }
 
 static void fn_show_state(struct vc_data *vc)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index eef34f6a0351..ddb140e14f3a 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3047,9 +3047,9 @@ extern void mem_init(void);
 extern void __init mmap_init(void);
 
 extern void __show_mem(unsigned int flags, nodemask_t *nodemask, int max_zone_idx);
-static inline void show_mem(unsigned int flags, nodemask_t *nodemask)
+static inline void show_mem(void)
 {
-	__show_mem(flags, nodemask, MAX_NR_ZONES - 1);
+	__show_mem(0, NULL, MAX_NR_ZONES - 1);
 }
 extern long si_mem_available(void);
 extern void si_meminfo(struct sysinfo * val);
diff --git a/init/initramfs.c b/init/initramfs.c
index e7a01c2ccd1b..8d0fd946cdd2 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -61,7 +61,7 @@ static void __init error(char *x)
 }
 
 #define panic_show_mem(fmt, ...) \
-	({ show_mem(0, NULL); panic(fmt, ##__VA_ARGS__); })
+	({ show_mem(); panic(fmt, ##__VA_ARGS__); })
 
 /* link hash */
 
diff --git a/kernel/panic.c b/kernel/panic.c
index 10effe40a3fa..07239d4ad81e 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -216,7 +216,7 @@ static void panic_print_sys_info(bool console_flush)
 		show_state();
 
 	if (panic_print & PANIC_PRINT_MEM_INFO)
-		show_mem(0, NULL);
+		show_mem();
 
 	if (panic_print & PANIC_PRINT_TIMER_INFO)
 		sysrq_timer_list_show();
-- 
2.41.0