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authorChristoph Hellwig <hch@lst.de>2010-03-10 15:22:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 15:52:39 -0800
commit1bd095083558928cc3b36b826422d69bcd743dca (patch)
tree5cfe9d39ac4da51e438dc87b6ef1203565ae21ac /arch/um/include/asm
parent55436c91652b45be576b91ec96a8d65f6b7447fa (diff)
um: 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. XXX: I'm not sure arch_has_single_step() is placed in the exactly correct location, please verify in which of the ptrace headers it should really be. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/include/asm')
-rw-r--r--arch/um/include/asm/ptrace-generic.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/um/include/asm/ptrace-generic.h b/arch/um/include/asm/ptrace-generic.h
index 6c8899013c9..2cd899f75a3 100644
--- a/arch/um/include/asm/ptrace-generic.h
+++ b/arch/um/include/asm/ptrace-generic.h
@@ -16,6 +16,8 @@ struct pt_regs {
struct uml_pt_regs regs;
};
+#define arch_has_single_step() (1)
+
#define EMPTY_REGS { .regs = EMPTY_UML_PT_REGS }
#define PT_REGS_IP(r) UPT_IP(&(r)->regs)