From patchwork Wed Apr 27 22:49:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Guilherme G. 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Piccoli" To: akpm@linux-foundation.org, bhe@redhat.com, pmladek@suse.com, kexec@lists.infradead.org Cc: linux-kernel@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, coresight@lists.linaro.org, linuxppc-dev@lists.ozlabs.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-edac@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-leds@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-pm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, linux-tegra@vger.kernel.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org, netdev@vger.kernel.org, openipmi-developer@lists.sourceforge.net, rcu@vger.kernel.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org, kernel-dev@igalia.com, gpiccoli@igalia.com, kernel@gpiccoli.net, halves@canonical.com, fabiomirmar@gmail.com, alejandro.j.jimenez@oracle.com, andriy.shevchenko@linux.intel.com, arnd@arndb.de, bp@alien8.de, corbet@lwn.net, d.hatayama@jp.fujitsu.com, dave.hansen@linux.intel.com, dyoung@redhat.com, feng.tang@intel.com, gregkh@linuxfoundation.org, mikelley@microsoft.com, hidehiro.kawai.ez@hitachi.com, jgross@suse.com, john.ogness@linutronix.de, keescook@chromium.org, luto@kernel.org, mhiramat@kernel.org, mingo@redhat.com, paulmck@kernel.org, peterz@infradead.org, rostedt@goodmis.org, senozhatsky@chromium.org, stern@rowland.harvard.edu, tglx@linutronix.de, vgoyal@redhat.com, vkuznets@redhat.com, will@kernel.org, Ivan Kokshaysky , Matt Turner , Richard Henderson Subject: [PATCH 10/30] alpha: Clean-up the panic notifier code Date: Wed, 27 Apr 2022 19:49:04 -0300 Message-Id: <20220427224924.592546-11-gpiccoli@igalia.com> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220427224924.592546-1-gpiccoli@igalia.com> References: <20220427224924.592546-1-gpiccoli@igalia.com> MIME-Version: 1.0 The alpha panic notifier has some code issues, not following the conventions of other notifiers. Also, it might halt the machine but still it is set to run as early as possible, which doesn't seem to be a good idea. This patch cleans the code, and set the notifier to run as the latest, following the same approach other architectures are doing. Also, we remove the unnecessary include of a header already included indirectly. Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Richard Henderson Signed-off-by: Guilherme G. Piccoli Reviewed-by: Petr Mladek --- arch/alpha/kernel/setup.c | 36 +++++++++++++++--------------------- 1 file changed, 15 insertions(+), 21 deletions(-) diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c index b4fbbba30aa2..d88bdf852753 100644 --- a/arch/alpha/kernel/setup.c +++ b/arch/alpha/kernel/setup.c @@ -41,19 +41,11 @@ #include #include #endif -#include #include #include #include #include -static int alpha_panic_event(struct notifier_block *, unsigned long, void *); -static struct notifier_block alpha_panic_block = { - alpha_panic_event, - NULL, - INT_MAX /* try to do it first */ -}; - #include #include #include @@ -435,6 +427,21 @@ static const struct sysrq_key_op srm_sysrq_reboot_op = { }; #endif +static int alpha_panic_event(struct notifier_block *this, + unsigned long event, void *ptr) +{ + /* If we are using SRM and serial console, just hard halt here. */ + if (alpha_using_srm && srmcons_output) + __halt(); + + return NOTIFY_DONE; +} + +static struct notifier_block alpha_panic_block = { + .notifier_call = alpha_panic_event, + .priority = INT_MIN, /* may not return, do it last */ +}; + void __init setup_arch(char **cmdline_p) { @@ -1427,19 +1434,6 @@ const struct seq_operations cpuinfo_op = { .show = show_cpuinfo, }; - -static int -alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) -{ -#if 1 - /* FIXME FIXME FIXME */ - /* If we are using SRM and serial console, just hard halt here. */ - if (alpha_using_srm && srmcons_output) - __halt(); -#endif - return NOTIFY_DONE; -} - static __init int add_pcspkr(void) { struct platform_device *pd;