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| author | David Howells <dhowells@redhat.com> | 2006-01-18 17:43:59 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-18 19:20:29 -0800 |
| commit | a411aee96ea7fe6fe065df65bf29ea755bcdb554 (patch) | |
| tree | 3a6cfece835c6d896a035e05fbcfe34a4c691bfc /include/asm-frv | |
| parent | 150256d8aadb3a337c31efa9e175cbd25bf06b06 (diff) | |
| download | linux-a411aee96ea7fe6fe065df65bf29ea755bcdb554.tar.gz linux-a411aee96ea7fe6fe065df65bf29ea755bcdb554.tar.bz2 linux-a411aee96ea7fe6fe065df65bf29ea755bcdb554.zip | |
[PATCH] Handle TIF_RESTORE_SIGMASK for FRV
Handle TIF_RESTORE_SIGMASK as added by David Woodhouse's patch entitled:
[PATCH] 2/3 Add TIF_RESTORE_SIGMASK support for arch/powerpc
[PATCH] 3/3 Generic sys_rt_sigsuspend
It does the following:
(1) Declares TIF_RESTORE_SIGMASK for FRV.
(2) Invokes it over to do_signal() when TIF_RESTORE_SIGMASK is set.
(3) Makes do_signal() support TIF_RESTORE_SIGMASK, using the signal mask saved
in current->saved_sigmask.
(4) Discards sys_rt_sigsuspend() from the arch, using the generic one instead.
(5) Makes sys_sigsuspend() save the signal mask and set TIF_RESTORE_SIGMASK
rather than attempting to fudge the return registers.
(6) Makes sys_sigsuspend() return -ERESTARTNOHAND rather than looping
intrinsically.
(7) Makes setup_frame(), setup_rt_frame() and handle_signal() return 0 or
-EFAULT rather than true/false to be consistent with the rest of the
kernel.
Due to the fact do_signal() is then only called from one place:
(8) Make do_signal() no longer have a return value is it was just being
ignored; force_sig() takes care of this.
(9) Discards the old sigmask argument to do_signal() as it's no longer
necessary.
This patch depends on the FRV signalling patches as well as the
sys_rt_sigsuspend patch.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-frv')
| -rw-r--r-- | include/asm-frv/thread_info.h | 2 | ||||
| -rw-r--r-- | include/asm-frv/unistd.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-frv/thread_info.h b/include/asm-frv/thread_info.h index a5576e02dd1d..ea426abf01d3 100644 --- a/include/asm-frv/thread_info.h +++ b/include/asm-frv/thread_info.h @@ -129,6 +129,7 @@ register struct thread_info *__current_thread_info asm("gr15"); #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */ #define TIF_IRET 5 /* return with iret */ +#define TIF_RESTORE_SIGMASK 6 /* restore signal mask in do_signal() */ #define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 17 /* OOM killer killed process */ @@ -138,6 +139,7 @@ register struct thread_info *__current_thread_info asm("gr15"); #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) #define _TIF_IRET (1 << TIF_IRET) +#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) #define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */ diff --git a/include/asm-frv/unistd.h b/include/asm-frv/unistd.h index cde376a7a857..4d994d2e99e3 100644 --- a/include/asm-frv/unistd.h +++ b/include/asm-frv/unistd.h @@ -486,6 +486,7 @@ static inline pid_t wait(int * wait_stat) /* #define __ARCH_WANT_SYS_SIGPENDING */ #define __ARCH_WANT_SYS_SIGPROCMASK #define __ARCH_WANT_SYS_RT_SIGACTION +#define __ARCH_WANT_SYS_RT_SIGSUSPEND #endif /* |