On Sun, Oct 25, 2015 at 10:26:35AM +0000, Matt Fleming wrote:
> The pr_*() calls in the x86 EFI code may or may not include a
> subsystem tag, which makes it difficult to grep the kernel log for all
> relevant EFI messages and leads users to miss important information.
>
> Recently, a bug reporter provided all the EFI print messages from the
> kernel log when trying to diagnose an issue but missed the following
> statement because it wasn't prefixed with anything indicating it was
> related to EFI,
>
> pr_err("Error ident-mapping new memmap (0x%lx)!\n", pa_memmap);
>
> Cc: Borislav Petkov <bp@xxxxxxx>
> Cc: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
> Signed-off-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
Good call.
Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
> ---
> arch/x86/platform/efi/efi-bgrt.c | 3 +++
> arch/x86/platform/efi/efi_64.c | 2 ++
> arch/x86/platform/efi/quirks.c | 4 +++-
> 3 files changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/platform/efi/efi-bgrt.c b/arch/x86/platform/efi/efi-bgrt.c
> index ea48449b2e63..9a52b5c4438f 100644
> --- a/arch/x86/platform/efi/efi-bgrt.c
> +++ b/arch/x86/platform/efi/efi-bgrt.c
> @@ -10,6 +10,9 @@
> * it under the terms of the GNU General Public License version 2 as
> * published by the Free Software Foundation.
> */
> +
> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> +
> #include <linux/kernel.h>
> #include <linux/init.h>
> #include <linux/acpi.h>
> diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
> index a0ac0f9c307f..d347e854a5e4 100644
> --- a/arch/x86/platform/efi/efi_64.c
> +++ b/arch/x86/platform/efi/efi_64.c
> @@ -15,6 +15,8 @@
> *
> */
>
> +#define pr_fmt(fmt) "efi: " fmt
> +
> #include <linux/kernel.h>
> #include <linux/init.h>
> #include <linux/mm.h>
> diff --git a/arch/x86/platform/efi/quirks.c b/arch/x86/platform/efi/quirks.c
> index 1c7380da65ff..6452070f3025 100644
> --- a/arch/x86/platform/efi/quirks.c
> +++ b/arch/x86/platform/efi/quirks.c
> @@ -1,3 +1,5 @@
> +#define pr_fmt(fmt) "efi: " fmt
> +
> #include <linux/init.h>
> #include <linux/kernel.h>
> #include <linux/string.h>
> @@ -256,7 +258,7 @@ void __init efi_apply_memmap_quirks(void)
> * services.
> */
> if (!efi_runtime_supported()) {
> - pr_info("efi: Setup done, disabling due to 32/64-bit mismatch\n");
> + pr_info("Setup done, disabling due to 32/64-bit mismatch\n");
> efi_unmap_memmap();
> }
>
> --
> 2.6.0
>
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