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Message-ID: <CAK7LNASqwN1gd8TovcR3RDkxkE_M=BSDD5GoOoLOkDQnuNDAcA@mail.gmail.com> Date: Sat, 4 May 2024 21:49:43 +0900 From: Masahiro Yamada <masahiroy@...nel.org> To: Björn Töpel <bjorn@...nel.org> Cc: Emil Renner Berthing <emil.renner.berthing@...onical.com>, linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org, Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, Nathan Chancellor <nathan@...nel.org>, Nicolas Schier <nicolas@...sle.eu>, Nick Terrell <terrelln@...com> Subject: Re: [PATCH v1 1/3] riscv: make image compression configurable On Thu, May 2, 2024 at 10:05 PM Björn Töpel <bjorn@...nelorg> wrote: > > Emil Renner Berthing <emil.renner.berthing@...onical.com> writes: > > > Previously the build process would always set KBUILD_IMAGE to the > > uncompressed Image file (unless XIP_KERNEL or EFI_ZBOOT was enabled) and > > unconditionally compress it into Image.gz. However there are already > > build targets for Image.bz2, Image.lz4, Image.lzma, Image.lzo and > > Image.zstd, so let's make use of those, make the compression method > > configurable and set KBUILD_IMAGE accordingly so that targets like > > 'make install' and 'make bindeb-pkg' will use the chosen image. > > > > Signed-off-by: Emil Renner Berthing <emil.renner.berthing@...onical.com> > > --- > > arch/riscv/Kconfig | 7 +++++++ > > arch/riscv/Makefile | 43 ++++++++++++++++++++------------------ > > arch/riscv/boot/install.sh | 9 +++++--- > > 3 files changed, 36 insertions(+), 23 deletions(-) > > > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > > index be09c8836d56..6c092d1ea7db 100644 > > --- a/arch/riscv/Kconfig > > +++ b/arch/riscv/Kconfig > > @@ -138,6 +138,13 @@ config RISCV > > select HAVE_GCC_PLUGINS > > select HAVE_GENERIC_VDSO if MMU && 64BIT > > select HAVE_IRQ_TIME_ACCOUNTING > > + select HAVE_KERNEL_BZIP2 if !XIP_KERNEL && !EFI_ZBOOT > > + select HAVE_KERNEL_GZIP if !XIP_KERNEL && !EFI_ZBOOT > > + select HAVE_KERNEL_LZ4 if !XIP_KERNEL && !EFI_ZBOOT > > + select HAVE_KERNEL_LZMA if !XIP_KERNEL && !EFI_ZBOOT > > + select HAVE_KERNEL_LZO if !XIP_KERNEL && !EFI_ZBOOT > > + select HAVE_KERNEL_UNCOMPRESSED if !XIP_KERNEL && !EFI_ZBOOT > > + select HAVE_KERNEL_ZSTD if !XIP_KERNEL && !EFI_ZBOOT > > select HAVE_KPROBES if !XIP_KERNEL > > select HAVE_KPROBES_ON_FTRACE if !XIP_KERNEL > > select HAVE_KRETPROBES if !XIP_KERNEL > > diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile > > index 5b3115a19852..29be676415d6 100644 > > --- a/arch/riscv/Makefile > > +++ b/arch/riscv/Makefile > > @@ -129,11 +129,27 @@ endif > > CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) > > > > # Default target when executing plain make > > -boot := arch/riscv/boot > > +boot := arch/riscv/boot > > ifeq ($(CONFIG_XIP_KERNEL),y) > > KBUILD_IMAGE := $(boot)/xipImage > > +else ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_ARCH_CANAAN),yy) > > +KBUILD_IMAGE := $(boot)/loader.bin > > +else ifeq ($(CONFIG_EFI_ZBOOT),y) > > +KBUILD_IMAGE := $(boot)/vmlinuz.efi > > +else ifeq ($(CONFIG_KERNEL_GZIP),y) > > +KBUILD_IMAGE := $(boot)/Image.gz > > +else ifeq ($(CONFIG_KERNEL_BZIP2),y) > > +KBUILD_IMAGE := $(boot)/Image.bz2 > > +else ifeq ($(CONFIG_KERNEL_LZ4),y) > > +KBUILD_IMAGE := $(boot)/Image.lz4 > > +else ifeq ($(CONFIG_KERNEL_LZMA),y) > > +KBUILD_IMAGE := $(boot)/Image.lzma > > +else ifeq ($(CONFIG_KERNEL_LZO),y) > > +KBUILD_IMAGE := $(boot)/Image.lzo > > +else ifeq ($(CONFIG_KERNEL_ZSTD),y) > > +KBUILD_IMAGE := $(boot)/Image.zst > > else > > -KBUILD_IMAGE := $(boot)/Image.gz > > +KBUILD_IMAGE := $(boot)/Image > > endif > > Really a nit/change if you want, but maybe doing something like > arch/s390/boot/Makefile does is easier to read: > > diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile > index 024482c68835..70f08e9999b4 100644 > --- a/arch/riscv/Makefile > +++ b/arch/riscv/Makefile > @@ -128,6 +128,14 @@ endif > # arch specific predefines for sparse > CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) > > +suffix-$(CONFIG_KERNEL_GZIP) := .gz > +suffix-$(CONFIG_KERNEL_BZIP2) := .bz2 > +suffix-$(CONFIG_KERNEL_LZ4) := .lz4 > +suffix-$(CONFIG_KERNEL_LZMA) := .lzma > +suffix-$(CONFIG_KERNEL_LZO) := .lzo > +suffix-$(CONFIG_KERNEL_XZ) := .xz > +suffix-$(CONFIG_KERNEL_ZSTD) := .zst > + > # Default target when executing plain make > boot := arch/riscv/boot > ifeq ($(CONFIG_XIP_KERNEL),y) > @@ -136,20 +144,8 @@ else ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_ARCH_CANAAN),yy) > KBUILD_IMAGE := $(boot)/loader.bin > else ifeq ($(CONFIG_EFI_ZBOOT),y) > KBUILD_IMAGE := $(boot)/vmlinuz.efi > -else ifeq ($(CONFIG_KERNEL_GZIP),y) > -KBUILD_IMAGE := $(boot)/Image.gz > -else ifeq ($(CONFIG_KERNEL_BZIP2),y) > -KBUILD_IMAGE := $(boot)/Image.bz2 > -else ifeq ($(CONFIG_KERNEL_LZ4),y) > -KBUILD_IMAGE := $(boot)/Image.lz4 > -else ifeq ($(CONFIG_KERNEL_LZMA),y) > -KBUILD_IMAGE := $(boot)/Image.lzma > -else ifeq ($(CONFIG_KERNEL_LZO),y) > -KBUILD_IMAGE := $(boot)/Image.lzo > -else ifeq ($(CONFIG_KERNEL_ZSTD),y) > -KBUILD_IMAGE := $(boot)/Image.zst > else > -KBUILD_IMAGE := $(boot)/Image > +KBUILD_IMAGE := $(boot)/Image$(suffix-y) > endif Good idea. If you avoid the 'else ifeq' chain completely, you also could do like this: boot-image-$(CONFIG_KERNEL_GZIP) := Image.gz ... boot-image-$(CONFIG_KERNEL_ZSTD) := Image.zst boot-image-$(CONFIG_KERNEL_UNCOMPRESSED) := Image boot-image-$(CONFIG_RISCV_M_MODE) := loader.bin boot-image-$(CONFIG_ARCH_CANAAN) := loader.bin boot-image-$(CONFIG_EFI_ZBOOT) := vmlinuz.efi boot-image-$(CONFIG_XIP_KERNEL) := xipImage KBUILD_IMAGE := $(boot)/$(boot-image-y) Emil's current patch will work, of course. BTW, this patch will conflict with 3b938e231b660a278de2988ee77b832d665c5326 It lands in riscv subsystem. -- Best Regards Masahiro Yamada
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