On Fri, Dec 07, 2018 at 11:41:35AM +0530, Firoz Khan wrote: > The purpose of this patch series is, we can easily > add/modify/delete system call table support by cha- > nging entry in syscall.tbl file instead of manually > changing many files. The other goal is to unify the > system call table generation support implementation > across all the architectures. > > The system call tables are in different format in > all architecture. It will be difficult to manually > add, modify or delete the system calls in the resp- > ective files manually. To make it easy by keeping a > script and which'll generate uapi header file and > syscall table file. > > syscall.tbl contains the list of available system > calls along with system call number and correspond- > ing entry point. Add a new system call in this arch- > itecture will be possible by adding new entry in > the syscall.tbl file. > > Adding a new table entry consisting of: > - System call number. > - ABI. > - System call name. > - Entry point name. > - Compat entry name, if required. > - spu entry name, if required. > > ARM, s390 and x86 architecuture does exist the sim- > ilar support. I leverage their implementation to > come up with a generic solution. > > I have done the same support for work for alpha, > ia64, m68k, microblaze, mips, parisc, sh, sparc, > and xtensa. Below mentioned git repository contains > more details about the workflow. > > https://github.com/frzkhn/system_call_table_generator/ > > Finally, this is the ground work to solve the Y2038 > issue. We need to add two dozen of system calls to > solve Y2038 issue. So this patch series will help to > add new system calls easily by adding new entry in the > syscall.tbl. > > Changes since v3: > - split compat syscall table out from native table. > - modified the script to add new line in the generated > file. Hi Firoz, This version(v4) booted fine in IBM Power8 box. Compiled with 'ppc64le_defconfig' aginst https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=merge&id=a26b21082959cee3075b3edb7ef23071c7e0b09a Reference failure v3 version: https://lists.ozlabs.org/pipermail/linuxppc-dev/2018-November/182110.html Regards, -Satheesh. > > Changes since v2: > - modified/optimized the syscall.tbl to avoid duplicate > for the spu entries. > - updated the syscalltbl.sh to meet the above point. > > Changes since v1: > - optimized/updated the syscall table generation > scripts. > - fixed all mixed indentation issues in syscall.tbl. > - added "comments" in syscall_*.tbl. > - changed from generic-y to generated-y in Kbuild. > > Firoz Khan (5): > powerpc: add __NR_syscalls along with NR_syscalls > powerpc: move macro definition from asm/systbl.h > powerpc: add system call table generation support > powerpc: split compat syscall table out from native table > powerpc: generate uapi header and system call table files > > arch/powerpc/Makefile | 3 + > arch/powerpc/include/asm/Kbuild | 4 + > arch/powerpc/include/asm/syscall.h | 3 +- > arch/powerpc/include/asm/systbl.h | 396 -------------------------- > arch/powerpc/include/asm/unistd.h | 3 +- > arch/powerpc/include/uapi/asm/Kbuild | 2 + > arch/powerpc/include/uapi/asm/unistd.h | 389 +------------------------ > arch/powerpc/kernel/Makefile | 10 - > arch/powerpc/kernel/entry_64.S | 7 +- > arch/powerpc/kernel/syscalls/Makefile | 63 ++++ > arch/powerpc/kernel/syscalls/syscall.tbl | 427 ++++++++++++++++++++++++++++ > arch/powerpc/kernel/syscalls/syscallhdr.sh | 37 +++ > arch/powerpc/kernel/syscalls/syscalltbl.sh | 36 +++ > arch/powerpc/kernel/systbl.S | 40 ++- > arch/powerpc/kernel/systbl_chk.c | 60 ---- > arch/powerpc/kernel/vdso.c | 7 +- > arch/powerpc/platforms/cell/spu_callbacks.c | 17 +- > 17 files changed, 606 insertions(+), 898 deletions(-) > delete mode 100644 arch/powerpc/include/asm/systbl.h > create mode 100644 arch/powerpc/kernel/syscalls/Makefile > create mode 100644 arch/powerpc/kernel/syscalls/syscall.tbl > create mode 100644 arch/powerpc/kernel/syscalls/syscallhdr.sh > create mode 100644 arch/powerpc/kernel/syscalls/syscalltbl.sh > delete mode 100644 arch/powerpc/kernel/systbl_chk.c > > -- > 1.9.1 >
