On Sun, Mar 18, 2018 at 8:51 PM, Guo Ren <ren_guo@xxxxxxxxx> wrote: > Signed-off-by: Guo Ren <ren_guo@xxxxxxxxx> > --- > arch/csky/include/uapi/asm/sigcontext.h | 33 +++ > arch/csky/include/uapi/asm/signal.h | 164 ++++++++++++++ > arch/csky/kernel/signal.c | 379 ++++++++++++++++++++++++++++++++ > 3 files changed, 576 insertions(+) Please have a look at arch/riscv and arch/nds32 for this, I think it can be simplified. This is an incompatible change of course, but when we change the system call ABI anyway, that is the right time to do it. > +#define NSIG 32 > +typedef unsigned long sigset_t; > + > +#endif /* __KERNEL__ */ > + > +#define SIGHUP 1 > +#define SIGINT 2 > +#define SIGQUIT 3 > +#define SIGILL 4 > +#define SIGTRAP 5 > +#define SIGABRT 6 > +#define SIGIOT 6 > +#define SIGBUS 7 > +#define SIGFPE 8 > +#define SIGKILL 9 > +#define SIGUSR1 10 > +#define SIGSEGV 11 > +#define SIGUSR2 12 > +#define SIGPIPE 13 In particular the constants should come from the asm-generic headers rather than being duplicated. If you need anything special, it may be better to modify the generic headers. Arnd