The patch titled byteorder: add load/store_{endian} api has been added to the -mm tree. Its filename is byteorder-add-load-store_endian-api-update.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: byteorder: add load/store_{endian} api From: Harvey Harrison <harvey.harrison@xxxxxxxxx> load_le16 is a synonym for the existing le16_to_cpup and is added to be symmetric with the load_le16_noalign API. On arches where unaligned access is OK, the unaligned calls are replaced with aligned calls. store_le16 is a new API and is added to be symmetric with the unaligned functions. It is implemented as a macro to allow compile-time byteswapping when the value is a constant. This will also allow use in many places currently that are of the form: *(__le16 *)ptr = cpu_to_le16(foo); In addition, some drivers/filesystems/arches already provide this API privately, which will allow them to be consolidated into this common code. Signed-off-by: Harvey Harrison <harvey.harrison@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/byteorder.h | 26 ++++++-------------------- include/linux/byteorder/generic.h | 25 +++++++++++++++++++------ 2 files changed, 25 insertions(+), 26 deletions(-) diff -puN include/linux/byteorder.h~byteorder-add-load-store_endian-api-update include/linux/byteorder.h --- a/include/linux/byteorder.h~byteorder-add-load-store_endian-api-update +++ a/include/linux/byteorder.h @@ -292,20 +292,6 @@ static inline __be64 __cpu_to_be64p(cons # define cpu_to_be32 __cpu_to_be32 # define cpu_to_be64 __cpu_to_be64 -# define load_le16 __le16_to_cpup -# define load_le32 __le32_to_cpup -# define load_le64 __le64_to_cpup -# define load_be16 __be16_to_cpup -# define load_be32 __be32_to_cpup -# define load_be64 __be64_to_cpup - -# define store_le16(p, val) (*(__le16 *)(p) = cpu_to_le16(val)) -# define store_le32(p, val) (*(__le32 *)(p) = cpu_to_le32(val)) -# define store_le64(p, val) (*(__le64 *)(p) = cpu_to_le64(val)) -# define store_be16(p, val) (*(__be16 *)(p) = cpu_to_be16(val)) -# define store_be32(p, val) (*(__be32 *)(p) = cpu_to_be32(val)) -# define store_be64(p, val) (*(__be64 *)(p) = cpu_to_be64(val)) - # define le16_to_cpup __le16_to_cpup # define le32_to_cpup __le32_to_cpup # define le64_to_cpup __le64_to_cpup @@ -354,32 +340,32 @@ static inline __be64 __cpu_to_be64p(cons static inline void le16_add_cpu(__le16 *var, u16 val) { - store_le16(var, load_le16(var) + val); + *var = cpu_to_le16(le16_to_cpup(var) + val); } static inline void le32_add_cpu(__le32 *var, u32 val) { - store_le32(var, load_le32(var) + val); + *var = cpu_to_le32(le32_to_cpup(var) + val); } static inline void le64_add_cpu(__le64 *var, u64 val) { - store_le64(var, load_le64(var) + val); + *var = cpu_to_le64(le64_to_cpup(var) + val); } static inline void be16_add_cpu(__be16 *var, u16 val) { - store_be16(var, load_be16(var) + val); + *var = cpu_to_be16(be16_to_cpup(var) + val); } static inline void be32_add_cpu(__be32 *var, u32 val) { - store_be32(var, load_be32(var) + val); + *var = cpu_to_be32(be32_to_cpup(var) + val); } static inline void be64_add_cpu(__be64 *var, u64 val) { - store_be64(var, load_be64(var) + val); + *var = cpu_to_be64(be64_to_cpup(var) + val); } #endif /* __KERNEL__ */ diff -puN include/linux/byteorder/generic.h~byteorder-add-load-store_endian-api-update include/linux/byteorder/generic.h --- a/include/linux/byteorder/generic.h~byteorder-add-load-store_endian-api-update +++ a/include/linux/byteorder/generic.h @@ -119,6 +119,19 @@ #define cpu_to_be16s __cpu_to_be16s #define be16_to_cpus __be16_to_cpus +#define load_le16 __le16_to_cpup +#define load_le32 __le32_to_cpup +#define load_le64 __le64_to_cpup +#define load_be16 __be16_to_cpup +#define load_be32 __be32_to_cpup +#define load_be64 __be64_to_cpup +#define store_le16(p, val) (*(__le16 *)(p) = cpu_to_le16(val)) +#define store_le32(p, val) (*(__le32 *)(p) = cpu_to_le32(val)) +#define store_le64(p, val) (*(__le64 *)(p) = cpu_to_le64(val)) +#define store_be16(p, val) (*(__be16 *)(p) = cpu_to_be16(val)) +#define store_be32(p, val) (*(__be32 *)(p) = cpu_to_be32(val)) +#define store_be64(p, val) (*(__be64 *)(p) = cpu_to_be64(val)) + /* * They have to be macros in order to do the constant folding * correctly - if the argument passed into a inline function @@ -142,32 +155,32 @@ static inline void le16_add_cpu(__le16 *var, u16 val) { - *var = cpu_to_le16(le16_to_cpu(*var) + val); + store_le16(var, load_le16(var) + val); } static inline void le32_add_cpu(__le32 *var, u32 val) { - *var = cpu_to_le32(le32_to_cpu(*var) + val); + store_le32(var, load_le32(var) + val); } static inline void le64_add_cpu(__le64 *var, u64 val) { - *var = cpu_to_le64(le64_to_cpu(*var) + val); + store_le64(var, load_le64(var) + val); } static inline void be16_add_cpu(__be16 *var, u16 val) { - *var = cpu_to_be16(be16_to_cpu(*var) + val); + store_be16(var, load_be16(var) + val); } static inline void be32_add_cpu(__be32 *var, u32 val) { - *var = cpu_to_be32(be32_to_cpu(*var) + val); + store_be32(var, load_be32(var) + val); } static inline void be64_add_cpu(__be64 *var, u64 val) { - *var = cpu_to_be64(be64_to_cpu(*var) + val); + store_be64(var, load_be64(var) + val); } #endif /* _LINUX_BYTEORDER_GENERIC_H */ _ Patches currently in -mm which might be from harvey.harrison@xxxxxxxxx are origin.patch lib-fix-sparse-shadowed-variable-warning.patch lib-radix_treec-make-percpu-variable-static.patch lib-proportionsc-trivial-sparse-lock-annotation.patch ibmpex-add-endian-annotation-to-extract_data-helper.patch blackfin-remove-__function__-in-video-driver.patch fb-carminefb-trivial-annotation-packing-color-register.patch linux-next.patch input-ads7846c-sparse-lock-annotation.patch scsi-replace-__inline-with-inline.patch scsi-use-the-common-hex_asc-array-rather-than-a-private-one.patch scsi-gdthc-use-unaligned-access-helpers.patch scsi-annotate-gdth_rdcap_data-gdth_rdcap16_data-endianness.patch memstick-annotate-endianness-of-attribute-structs.patch byteorder-add-load_-store_endian-api.patch byteorder-add-load-store_endian-api-update.patch unaligned-consolidate-unaligned-headers-add-load_-store_endian_noalign.patch unaligned-wire-up-trivial-arches-for-new-common-unaligned-header.patch sh-wire-up-arch-overrides-for-unaligned-access-on-the-sh4a.patch unaligned-wire-up-h8300-and-m32r-arches.patch unaligned-wire-up-arm-arch-overrides-for-unaligned-access.patch unaligned-remove-the-old-implementation.patch ata-replace-byteshifting-with-unaligned-endian-helpers.patch usb-use-unaligned-endian-helpers-in-storage-drivers.patch -- 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