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authorChristoph Hellwig <hch@lst.de>2010-03-10 18:22:57 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 18:52:39 -0500
commit6d75ca10225be4c7509026f9b61c740b22e734e4 (patch)
tree3a57ab05345bb25aff05e5da913468ee2897b45f /arch/xtensa/include
parent1bd095083558928cc3b36b826422d69bcd743dca (diff)
xtensa: 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 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: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/xtensa/include')
-rw-r--r--arch/xtensa/include/asm/ptrace.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h
index 905e1e61965..3c549f79872 100644
--- a/arch/xtensa/include/asm/ptrace.h
+++ b/arch/xtensa/include/asm/ptrace.h
@@ -113,6 +113,7 @@ struct pt_regs {
113 113
114#include <variant/core.h> 114#include <variant/core.h>
115 115
116# define arch_has_single_step() (1)
116# define task_pt_regs(tsk) ((struct pt_regs*) \ 117# define task_pt_regs(tsk) ((struct pt_regs*) \
117 (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1) 118 (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
118# define user_mode(regs) (((regs)->ps & 0x00000020)!=0) 119# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)