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| author | Arvind Sankar <nivedita@alum.mit.edu> | 2020-09-14 23:35:34 +0200 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2020-09-16 17:53:42 +0200 |
| commit | c1df5e0c5796f775e60d1aec0b52f6d03d66ccd4 (patch) | |
| tree | db726b2b6df6e14995bb8963a97abdf4573b4d88 | |
| parent | integrity: Load certs from the EFI MOK config table (diff) | |
| download | linux-c1df5e0c5796f775e60d1aec0b52f6d03d66ccd4.tar.xz linux-c1df5e0c5796f775e60d1aec0b52f6d03d66ccd4.zip | |
efi/libstub: Add efi_warn and *_once logging helpers
Add an efi_warn logging helper for warnings, and implement an analog of
printk_once for once-only logging.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Link: https://lore.kernel.org/r/20200914213535.933454-1-nivedita@alum.mit.edu
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
| -rw-r--r-- | drivers/firmware/efi/libstub/efistub.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h index 27cdcb11714d..9ea87a28d303 100644 --- a/drivers/firmware/efi/libstub/efistub.h +++ b/drivers/firmware/efi/libstub/efistub.h @@ -52,11 +52,34 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, #define efi_info(fmt, ...) \ efi_printk(KERN_INFO fmt, ##__VA_ARGS__) +#define efi_warn(fmt, ...) \ + efi_printk(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__) #define efi_err(fmt, ...) \ efi_printk(KERN_ERR "ERROR: " fmt, ##__VA_ARGS__) #define efi_debug(fmt, ...) \ efi_printk(KERN_DEBUG "DEBUG: " fmt, ##__VA_ARGS__) +#define efi_printk_once(fmt, ...) \ +({ \ + static bool __print_once; \ + bool __ret_print_once = !__print_once; \ + \ + if (!__print_once) { \ + __print_once = true; \ + efi_printk(fmt, ##__VA_ARGS__); \ + } \ + __ret_print_once; \ +}) + +#define efi_info_once(fmt, ...) \ + efi_printk_once(KERN_INFO fmt, ##__VA_ARGS__) +#define efi_warn_once(fmt, ...) \ + efi_printk_once(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__) +#define efi_err_once(fmt, ...) \ + efi_printk_once(KERN_ERR "ERROR: " fmt, ##__VA_ARGS__) +#define efi_debug_once(fmt, ...) \ + efi_printk_once(KERN_DEBUG "DEBUG: " fmt, ##__VA_ARGS__) + /* Helper macros for the usual case of using simple C variables: */ #ifndef fdt_setprop_inplace_var #define fdt_setprop_inplace_var(fdt, node_offset, name, var) \ |