From: Andrew Davis <afd@ti.com> To: Mark Rutland <mark.rutland@arm.com>, Lorenzo Pieralisi <lpieralisi@kernel.org>, Sebastian Reichel <sre@kernel.org>, Karol Gugala <kgugala@antmicro.com>, Mateusz Holenko <mholenko@antmicro.com>, Gabriel Somlo <gsomlo@gmail.com>, Joel Stanley <joel@jms.id.au>, Mark Brown <broonie@kernel.org>, Orson Zhai <orsonzhai@gmail.com>, Baolin Wang <baolin.wang@linux.alibaba.com>, Chunyan Zhang <zhang.lyra@gmail.com>, Lee Jones <lee@kernel.org>, Dmitry Osipenko <dmitry.osipenko@collabora.com> Cc: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>, <linux-spi@vger.kernel.org>, Andrew Davis <afd@ti.com> Subject: [PATCH RFC 1/5] kernel/reboot: Deprecate register_restart_handler() Date: Fri, 17 Nov 2023 10:10:02 -0600 [thread overview] Message-ID: <20231117161006.87734-2-afd@ti.com> (raw) In-Reply-To: <20231117161006.87734-1-afd@ti.com> There are now two ways to add a handler to the restart_handler_list. Two ways to do the same thing is bad design, so let's unify on using the new method register_sys_off_handler() everywhere. Reasons: * The other register_*_handler functions take a callback, this old API takes a notifier_block, which makes it confusing with the register_*_notifier class of functions. * register_sys_off_handler (new API) is a more unified API allowing for registering several system off types. * The new API has more helpers built around it now, including devm and platform helpers. * The new API manages the struct notifier_block for us, simplifying using code. Mark register_restart_handler() as deprecated to try to warn off new users while we finish converting the remaining existing users. Signed-off-by: Andrew Davis <afd@ti.com> --- include/linux/reboot.h | 8 ++++++-- kernel/reboot.c | 3 +++ 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/include/linux/reboot.h b/include/linux/reboot.h index c4cc3b89ced1f..c5fff3157b191 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -46,8 +46,12 @@ extern int unregister_reboot_notifier(struct notifier_block *); extern int devm_register_reboot_notifier(struct device *, struct notifier_block *); -extern int register_restart_handler(struct notifier_block *); -extern int unregister_restart_handler(struct notifier_block *); +/* + * This function is deprecated, use register_sys_off_handler(SYS_OFF_MODE_RESTART) + * or devm_register_restart_handler() instead. + */ +extern int __deprecated register_restart_handler(struct notifier_block *); +extern int __deprecated unregister_restart_handler(struct notifier_block *); extern void do_kernel_restart(char *cmd); /* diff --git a/kernel/reboot.c b/kernel/reboot.c index 395a0ea3c7a8a..768ce97829f41 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -189,6 +189,9 @@ static ATOMIC_NOTIFIER_HEAD(restart_handler_list); * * Currently always returns zero, as atomic_notifier_chain_register() * always returns zero. + * + * This function is deprecated, use register_sys_off_handler(SYS_OFF_MODE_RESTART) + * or devm_register_restart_handler() instead. */ int register_restart_handler(struct notifier_block *nb) { -- 2.39.2
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Davis <afd@ti.com> To: Mark Rutland <mark.rutland@arm.com>, Lorenzo Pieralisi <lpieralisi@kernel.org>, Sebastian Reichel <sre@kernel.org>, Karol Gugala <kgugala@antmicro.com>, Mateusz Holenko <mholenko@antmicro.com>, Gabriel Somlo <gsomlo@gmail.com>, Joel Stanley <joel@jms.id.au>, Mark Brown <broonie@kernel.org>, Orson Zhai <orsonzhai@gmail.com>, Baolin Wang <baolin.wang@linux.alibaba.com>, Chunyan Zhang <zhang.lyra@gmail.com>, Lee Jones <lee@kernel.org>, Dmitry Osipenko <dmitry.osipenko@collabora.com> Cc: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>, <linux-spi@vger.kernel.org>, Andrew Davis <afd@ti.com> Subject: [PATCH RFC 1/5] kernel/reboot: Deprecate register_restart_handler() Date: Fri, 17 Nov 2023 10:10:02 -0600 [thread overview] Message-ID: <20231117161006.87734-2-afd@ti.com> (raw) In-Reply-To: <20231117161006.87734-1-afd@ti.com> There are now two ways to add a handler to the restart_handler_list. Two ways to do the same thing is bad design, so let's unify on using the new method register_sys_off_handler() everywhere. Reasons: * The other register_*_handler functions take a callback, this old API takes a notifier_block, which makes it confusing with the register_*_notifier class of functions. * register_sys_off_handler (new API) is a more unified API allowing for registering several system off types. * The new API has more helpers built around it now, including devm and platform helpers. * The new API manages the struct notifier_block for us, simplifying using code. Mark register_restart_handler() as deprecated to try to warn off new users while we finish converting the remaining existing users. Signed-off-by: Andrew Davis <afd@ti.com> --- include/linux/reboot.h | 8 ++++++-- kernel/reboot.c | 3 +++ 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/include/linux/reboot.h b/include/linux/reboot.h index c4cc3b89ced1f..c5fff3157b191 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -46,8 +46,12 @@ extern int unregister_reboot_notifier(struct notifier_block *); extern int devm_register_reboot_notifier(struct device *, struct notifier_block *); -extern int register_restart_handler(struct notifier_block *); -extern int unregister_restart_handler(struct notifier_block *); +/* + * This function is deprecated, use register_sys_off_handler(SYS_OFF_MODE_RESTART) + * or devm_register_restart_handler() instead. + */ +extern int __deprecated register_restart_handler(struct notifier_block *); +extern int __deprecated unregister_restart_handler(struct notifier_block *); extern void do_kernel_restart(char *cmd); /* diff --git a/kernel/reboot.c b/kernel/reboot.c index 395a0ea3c7a8a..768ce97829f41 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -189,6 +189,9 @@ static ATOMIC_NOTIFIER_HEAD(restart_handler_list); * * Currently always returns zero, as atomic_notifier_chain_register() * always returns zero. + * + * This function is deprecated, use register_sys_off_handler(SYS_OFF_MODE_RESTART) + * or devm_register_restart_handler() instead. */ int register_restart_handler(struct notifier_block *nb) { -- 2.39.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-11-17 16:10 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-11-17 16:10 [PATCH RFC 0/5] Deprecate register_restart_handler() Andrew Davis 2023-11-17 16:10 ` Andrew Davis 2023-11-17 16:10 ` Andrew Davis [this message] 2023-11-17 16:10 ` [PATCH RFC 1/5] kernel/reboot: " Andrew Davis 2023-11-17 16:10 ` [PATCH RFC 2/5] drivers/soc/litex: Use devm_register_restart_handler() Andrew Davis 2023-11-17 16:10 ` Andrew Davis 2023-11-29 10:03 ` Gabriel L. Somlo 2023-11-29 10:03 ` Gabriel L. Somlo 2023-12-20 20:35 ` Gabriel L. Somlo 2023-12-20 20:35 ` Gabriel L. Somlo 2023-11-17 16:10 ` [PATCH RFC 3/5] power: reset: gpio-restart: Use devm_register_sys_off_handler() Andrew Davis 2023-11-17 16:10 ` Andrew Davis 2023-11-17 16:10 ` [PATCH RFC 4/5] spi: sprd: adi: Use devm_register_restart_handler() Andrew Davis 2023-11-17 16:10 ` Andrew Davis 2023-11-17 16:10 ` [PATCH RFC 5/5] firmware: psci: Use register_sys_off_handler(SYS_OFF_MODE_RESTART) Andrew Davis 2023-11-17 16:10 ` Andrew Davis 2023-11-27 16:48 ` (subset) [PATCH RFC 0/5] Deprecate register_restart_handler() Mark Brown 2023-11-27 16:48 ` Mark Brown 2023-11-29 10:09 ` Gabriel L. Somlo 2023-11-29 10:09 ` Gabriel L. Somlo
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