Re: [PATCH v4 1/6] printk: Collapse shutdown types into a single dump reason

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Kees Cook <keescook@xxxxxxxxxxxx> writes:
> To turn the KMSG_DUMP_* reasons into a more ordered list, collapse
> the redundant KMSG_DUMP_(RESTART|HALT|POWEROFF) reasons into
> KMSG_DUMP_SHUTDOWN. The current users already don't meaningfully
> distinguish between them, so there's no need to, as discussed here:
> https://lore.kernel.org/lkml/CA+CK2bAPv5u1ih5y9t5FUnTyximtFCtDYXJCpuyjOyHNOkRdqw@xxxxxxxxxxxxxx/
>
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
> ---
>  arch/powerpc/kernel/nvram_64.c | 4 +---
>  fs/pstore/platform.c           | 8 ++------
>  include/linux/kmsg_dump.h      | 4 +---
>  kernel/reboot.c                | 6 +++---
>  4 files changed, 7 insertions(+), 15 deletions(-)
>
> diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
> index fb4f61096613..0cd1c88bfc8b 100644
> --- a/arch/powerpc/kernel/nvram_64.c
> +++ b/arch/powerpc/kernel/nvram_64.c
> @@ -655,9 +655,7 @@ static void oops_to_nvram(struct kmsg_dumper *dumper,
>  	int rc = -1;
>  
>  	switch (reason) {
> -	case KMSG_DUMP_RESTART:
> -	case KMSG_DUMP_HALT:
> -	case KMSG_DUMP_POWEROFF:
> +	case KMSG_DUMP_SHUTDOWN:
>  		/* These are almost always orderly shutdowns. */
>  		return;
>  	case KMSG_DUMP_OOPS:

Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> (powerpc)

cheers



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