[PATCH 10/30] alpha: Clean-up the panic notifier code
From: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
Date: 2022-04-27 22:54:50
Also in:
kexec, linux-alpha, linux-edac, linux-hyperv, linux-leds, linux-mips, linux-pm, linux-remoteproc, linux-s390, linux-tegra, linux-um, linuxppc-dev, lkml, rcu, sparclinux, xen-devel
Subsystem:
alpha port, the rest · Maintainers:
Richard Henderson, Matt Turner, Magnus Lindholm, Linus Torvalds
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 <redacted> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <redacted> Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com> --- 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 <linux/sysrq.h> #include <linux/reboot.h> #endif -#include <linux/notifier.h> #include <asm/setup.h> #include <asm/io.h> #include <linux/log2.h> #include <linux/export.h> -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 <linux/uaccess.h> #include <asm/hwrpb.h> #include <asm/dma.h>
@@ -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;
--
2.36.0