From: Hidehiro Kawai <hidehiro.kawai.ez@xxxxxxxxxxx> Subject: kexec: use core_param for crash_kexec_post_notifiers boot option crash_kexec_post_notifiers ia a boot option which controls whether the 1st kernel calls panic notifiers or not before booting the 2nd kernel. However, there is no need to limit it to being modifiable only at boot time. So, use core_param instead of early_param. Link: http://lkml.kernel.org/r/20160705113327.5864.43139.stgit@softrs Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@xxxxxxxxxxx> Cc: Dave Young <dyoung@xxxxxxxxxx> Cc: Baoquan He <bhe@xxxxxxxxxx> Cc: Vivek Goyal <vgoyal@xxxxxxxxxx> Cc: Eric Biederman <ebiederm@xxxxxxxxxxxx> Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/panic.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff -puN kernel/panic.c~kexec-use-core_param-for-crash_kexec_post_notifiers-boot-option kernel/panic.c --- a/kernel/panic.c~kexec-use-core_param-for-crash_kexec_post_notifiers-boot-option +++ a/kernel/panic.c @@ -108,6 +108,7 @@ void panic(const char *fmt, ...) long i, i_next = 0; int state = 0; int old_cpu, this_cpu; + bool _crash_kexec_post_notifiers = crash_kexec_post_notifiers; /* * Disable local interrupts. This will prevent panic_smp_self_stop @@ -160,7 +161,7 @@ void panic(const char *fmt, ...) * * Bypass the panic_cpu check and call __crash_kexec directly. */ - if (!crash_kexec_post_notifiers) { + if (!_crash_kexec_post_notifiers) { printk_nmi_flush_on_panic(); __crash_kexec(NULL); } @@ -191,7 +192,7 @@ void panic(const char *fmt, ...) * * Bypass the panic_cpu check and call __crash_kexec directly. */ - if (crash_kexec_post_notifiers) + if (_crash_kexec_post_notifiers) __crash_kexec(NULL); bust_spinlocks(0); @@ -571,13 +572,7 @@ EXPORT_SYMBOL(__stack_chk_fail); core_param(panic, panic_timeout, int, 0644); core_param(pause_on_oops, pause_on_oops, int, 0644); core_param(panic_on_warn, panic_on_warn, int, 0644); - -static int __init setup_crash_kexec_post_notifiers(char *s) -{ - crash_kexec_post_notifiers = true; - return 0; -} -early_param("crash_kexec_post_notifiers", setup_crash_kexec_post_notifiers); +core_param(crash_kexec_post_notifiers, crash_kexec_post_notifiers, bool, 0644); static int __init oops_setup(char *s) { _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
