diff options
| author | David Howells <dhowells@redhat.com> | 2009-09-02 10:14:16 +0200 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-09-02 13:29:19 +0200 |
| commit | d0420c83f39f79afb82010c2d2cafd150eef651b (patch) | |
| tree | 0aa939d78ed62bafdd6e38ca26451f8039392378 /arch/avr32/kernel | |
| parent | KEYS: Do some whitespace cleanups [try #6] (diff) | |
| download | linux-d0420c83f39f79afb82010c2d2cafd150eef651b.tar.xz linux-d0420c83f39f79afb82010c2d2cafd150eef651b.zip | |
KEYS: Extend TIF_NOTIFY_RESUME to (almost) all architectures [try #6]
Implement TIF_NOTIFY_RESUME for most of those architectures in which isn't yet
available, and, whilst we're at it, have it call the appropriate tracehook.
After this patch, blackfin, m68k* and xtensa still lack support and need
alteration of assembly code to make it work.
Resume notification can then be used (by a later patch) to install a new
session keyring on the parent of a process.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
cc: linux-arch@vger.kernel.org
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'arch/avr32/kernel')
| -rw-r--r-- | arch/avr32/kernel/entry-avr32b.S | 2 | ||||
| -rw-r--r-- | arch/avr32/kernel/signal.c | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/avr32/kernel/entry-avr32b.S b/arch/avr32/kernel/entry-avr32b.S index 009a80155d67..169268c40ae2 100644 --- a/arch/avr32/kernel/entry-avr32b.S +++ b/arch/avr32/kernel/entry-avr32b.S @@ -281,7 +281,7 @@ syscall_exit_work: ld.w r1, r0[TI_flags] rjmp 1b -2: mov r2, _TIF_SIGPENDING | _TIF_RESTORE_SIGMASK +2: mov r2, _TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NOTIFY_RESUME tst r1, r2 breq 3f unmask_interrupts diff --git a/arch/avr32/kernel/signal.c b/arch/avr32/kernel/signal.c index 27227561bad6..62d242e2d033 100644 --- a/arch/avr32/kernel/signal.c +++ b/arch/avr32/kernel/signal.c @@ -322,4 +322,9 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, struct thread_info *ti) if (ti->flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)) do_signal(regs, ¤t->blocked, syscall); + + if (ti->flags & _TIF_NOTIFY_RESUME) { + clear_thread_flag(TIF_NOTIFY_RESUME); + tracehook_notify_resume(regs); + } } |