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From: Pingfan Liu <kernelfans@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Pingfan Liu <kernelfans@gmail.com>,
	Petr Mladek <pmladek@suse.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Wang Qing <wangqing@vivo.com>,
	"Peter Zijlstra (Intel)" <peterz@infradead.org>,
	Santosh Sivaraj <santosh@fossix.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCHv3 1/4] kernel/watchdog: trival cleanups
Date: Thu, 14 Oct 2021 10:41:52 +0800	[thread overview]
Message-ID: <20211014024155.15253-2-kernelfans@gmail.com> (raw)
In-Reply-To: <20211014024155.15253-1-kernelfans@gmail.com>

No reference to WATCHDOG_DEFAULT, remove it.

And nobody cares about the return value of watchdog_nmi_enable(),
changing its prototype to void.

Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Wang Qing <wangqing@vivo.com>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Santosh Sivaraj <santosh@fossix.org>
Cc: linux-arm-kernel@lists.infradead.org
To: linux-kernel@vger.kernel.org
---
 arch/sparc/kernel/nmi.c | 8 ++++----
 include/linux/nmi.h     | 2 +-
 kernel/watchdog.c       | 5 +----
 3 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index 060fff95a305..8dc0f4e820b0 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c
@@ -282,11 +282,11 @@ __setup("nmi_watchdog=", setup_nmi_watchdog);
  * sparc specific NMI watchdog enable function.
  * Enables watchdog if it is not enabled already.
  */
-int watchdog_nmi_enable(unsigned int cpu)
+void watchdog_nmi_enable(unsigned int cpu)
 {
 	if (atomic_read(&nmi_active) == -1) {
 		pr_warn("NMI watchdog cannot be enabled or disabled\n");
-		return -1;
+		return;
 	}
 
 	/*
@@ -295,11 +295,11 @@ int watchdog_nmi_enable(unsigned int cpu)
 	 * process first.
 	 */
 	if (!nmi_init_done)
-		return 0;
+		return;
 
 	smp_call_function_single(cpu, start_nmi_watchdog, NULL, 1);
 
-	return 0;
+	return;
 }
 /*
  * sparc specific NMI watchdog disable function.
diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index 750c7f395ca9..b7bcd63c36b4 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -119,7 +119,7 @@ static inline int hardlockup_detector_perf_init(void) { return 0; }
 void watchdog_nmi_stop(void);
 void watchdog_nmi_start(void);
 int watchdog_nmi_probe(void);
-int watchdog_nmi_enable(unsigned int cpu);
+void watchdog_nmi_enable(unsigned int cpu);
 void watchdog_nmi_disable(unsigned int cpu);
 
 /**
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index ad912511a0c0..6e6dd5f0bc3e 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -30,10 +30,8 @@
 static DEFINE_MUTEX(watchdog_mutex);
 
 #if defined(CONFIG_HARDLOCKUP_DETECTOR) || defined(CONFIG_HAVE_NMI_WATCHDOG)
-# define WATCHDOG_DEFAULT	(SOFT_WATCHDOG_ENABLED | NMI_WATCHDOG_ENABLED)
 # define NMI_WATCHDOG_DEFAULT	1
 #else
-# define WATCHDOG_DEFAULT	(SOFT_WATCHDOG_ENABLED)
 # define NMI_WATCHDOG_DEFAULT	0
 #endif
 
@@ -95,10 +93,9 @@ __setup("nmi_watchdog=", hardlockup_panic_setup);
  * softlockup watchdog start and stop. The arch must select the
  * SOFTLOCKUP_DETECTOR Kconfig.
  */
-int __weak watchdog_nmi_enable(unsigned int cpu)
+void __weak watchdog_nmi_enable(unsigned int cpu)
 {
 	hardlockup_detector_perf_enable();
-	return 0;
 }
 
 void __weak watchdog_nmi_disable(unsigned int cpu)
-- 
2.31.1


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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Pingfan Liu <kernelfans@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Pingfan Liu <kernelfans@gmail.com>,
	Petr Mladek <pmladek@suse.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Wang Qing <wangqing@vivo.com>,
	"Peter Zijlstra (Intel)" <peterz@infradead.org>,
	Santosh Sivaraj <santosh@fossix.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCHv3 1/4] kernel/watchdog: trival cleanups
Date: Thu, 14 Oct 2021 10:41:52 +0800	[thread overview]
Message-ID: <20211014024155.15253-2-kernelfans@gmail.com> (raw)
In-Reply-To: <20211014024155.15253-1-kernelfans@gmail.com>

No reference to WATCHDOG_DEFAULT, remove it.

And nobody cares about the return value of watchdog_nmi_enable(),
changing its prototype to void.

Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Wang Qing <wangqing@vivo.com>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Santosh Sivaraj <santosh@fossix.org>
Cc: linux-arm-kernel@lists.infradead.org
To: linux-kernel@vger.kernel.org
---
 arch/sparc/kernel/nmi.c | 8 ++++----
 include/linux/nmi.h     | 2 +-
 kernel/watchdog.c       | 5 +----
 3 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index 060fff95a305..8dc0f4e820b0 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c
@@ -282,11 +282,11 @@ __setup("nmi_watchdog=", setup_nmi_watchdog);
  * sparc specific NMI watchdog enable function.
  * Enables watchdog if it is not enabled already.
  */
-int watchdog_nmi_enable(unsigned int cpu)
+void watchdog_nmi_enable(unsigned int cpu)
 {
 	if (atomic_read(&nmi_active) == -1) {
 		pr_warn("NMI watchdog cannot be enabled or disabled\n");
-		return -1;
+		return;
 	}
 
 	/*
@@ -295,11 +295,11 @@ int watchdog_nmi_enable(unsigned int cpu)
 	 * process first.
 	 */
 	if (!nmi_init_done)
-		return 0;
+		return;
 
 	smp_call_function_single(cpu, start_nmi_watchdog, NULL, 1);
 
-	return 0;
+	return;
 }
 /*
  * sparc specific NMI watchdog disable function.
diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index 750c7f395ca9..b7bcd63c36b4 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -119,7 +119,7 @@ static inline int hardlockup_detector_perf_init(void) { return 0; }
 void watchdog_nmi_stop(void);
 void watchdog_nmi_start(void);
 int watchdog_nmi_probe(void);
-int watchdog_nmi_enable(unsigned int cpu);
+void watchdog_nmi_enable(unsigned int cpu);
 void watchdog_nmi_disable(unsigned int cpu);
 
 /**
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index ad912511a0c0..6e6dd5f0bc3e 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -30,10 +30,8 @@
 static DEFINE_MUTEX(watchdog_mutex);
 
 #if defined(CONFIG_HARDLOCKUP_DETECTOR) || defined(CONFIG_HAVE_NMI_WATCHDOG)
-# define WATCHDOG_DEFAULT	(SOFT_WATCHDOG_ENABLED | NMI_WATCHDOG_ENABLED)
 # define NMI_WATCHDOG_DEFAULT	1
 #else
-# define WATCHDOG_DEFAULT	(SOFT_WATCHDOG_ENABLED)
 # define NMI_WATCHDOG_DEFAULT	0
 #endif
 
@@ -95,10 +93,9 @@ __setup("nmi_watchdog=", hardlockup_panic_setup);
  * softlockup watchdog start and stop. The arch must select the
  * SOFTLOCKUP_DETECTOR Kconfig.
  */
-int __weak watchdog_nmi_enable(unsigned int cpu)
+void __weak watchdog_nmi_enable(unsigned int cpu)
 {
 	hardlockup_detector_perf_enable();
-	return 0;
 }
 
 void __weak watchdog_nmi_disable(unsigned int cpu)
-- 
2.31.1


  reply	other threads:[~2021-10-14  2:44 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-14  2:41 [PATCHv3 0/4] watchdog_hld cleanup and async model for arm64 Pingfan Liu
2021-10-14  2:41 ` Pingfan Liu
2021-10-14  2:41 ` Pingfan Liu [this message]
2021-10-14  2:41   ` [PATCHv3 1/4] kernel/watchdog: trival cleanups Pingfan Liu
2021-10-14  2:41 ` [PATCHv3 2/4] kernel/watchdog_hld: Ensure CPU-bound context when creating hardlockup detector event Pingfan Liu
2021-10-14  2:41   ` Pingfan Liu
2021-10-14  2:41 ` [PATCHv3 3/4] kernel/watchdog: Adapt the watchdog_hld interface for async model Pingfan Liu
2021-10-14  2:41   ` Pingfan Liu
2021-10-14  2:41 ` [PATCHv3 4/4] arm64: Enable perf events based hard lockup detector Pingfan Liu
2021-10-14  2:41   ` Pingfan Liu
2021-10-26  5:10   ` kernel test robot
2021-10-26  5:10     ` kernel test robot
2021-10-26 10:20   ` kernel test robot
2021-10-26 10:20     ` kernel test robot
2022-01-17 10:19 ` [PATCHv3 0/4] watchdog_hld cleanup and async model for arm64 Lecopzer Chen
2022-01-17 10:19   ` Lecopzer Chen
2022-01-24  1:02   ` Pingfan Liu
2022-01-24  1:02     ` Pingfan Liu

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