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| author | Christoph Hellwig <hch@lst.de> | 2010-03-10 15:22:50 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-12 15:52:38 -0800 |
| commit | 440e6ca79aebdc274ce4c625a6f42c8bf3c7bc91 (patch) | |
| tree | ff3230d94decd47b67960134a54313706c10bfa5 /arch/arm/include | |
| parent | fd341abba65e3d93fc24c132e4c0278d18b6d2fc (diff) | |
| download | blackbird-op-linux-440e6ca79aebdc274ce4c625a6f42c8bf3c7bc91.tar.gz blackbird-op-linux-440e6ca79aebdc274ce4c625a6f42c8bf3c7bc91.zip | |
arm: use generic ptrace_resume code
Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT,
PTRACE_KILL and PTRACE_SINGLESTEP. This implies defining
arch_has_single_step in <asm/ptrace.h> and implementing the
user_enable_single_step and user_disable_single_step functions, which also
causes the breakpoint information to be cleared on fork, which could be
considered a bug fix.
Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which
it previously wasn't and the single stepping disable only happens if the
tracee process isn't a zombie yet, which is consistent with all
architectures using the modern ptrace code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/ptrace.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h index eec6e897ceb2..9dcb11e59026 100644 --- a/arch/arm/include/asm/ptrace.h +++ b/arch/arm/include/asm/ptrace.h @@ -128,6 +128,8 @@ struct pt_regs { #ifdef __KERNEL__ +#define arch_has_single_step() (1) + #define user_mode(regs) \ (((regs)->ARM_cpsr & 0xf) == 0) |
