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authorMarkus Metzger <markus.t.metzger@intel.com>2008-12-19 17:10:24 +0300
committerIngo Molnar <mingo@elte.hu>2008-12-20 11:15:46 +0300
commitbf53de907dfdaac178c92d774aae7370d7b97d20 (patch)
tree738a07a8b4b22f7bb8ec2029c9ea9c635db6c62a /arch/x86/include/asm/ptrace.h
parent30cd324e9787ccc9a5ede59742d5409857550692 (diff)
downloadlinux-bf53de907dfdaac178c92d774aae7370d7b97d20.tar.xz
x86, bts: add fork and exit handling
Impact: introduce new ptrace facility Add arch_ptrace_untrace() function that is called when the tracer detaches (either voluntarily or when the tracing task dies); ptrace_disable() is only called on a voluntary detach. Add ptrace_fork() and arch_ptrace_fork(). They are called when a traced task is forked. Clear DS and BTS related fields on fork. Release DS resources and reclaim memory in ptrace_untrace(). This releases resources already when the tracing task dies. We used to do that when the traced task dies. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/ptrace.h')
-rw-r--r--arch/x86/include/asm/ptrace.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
index fbf744215911..6d34d954c228 100644
--- a/arch/x86/include/asm/ptrace.h
+++ b/arch/x86/include/asm/ptrace.h
@@ -235,6 +235,13 @@ extern int do_get_thread_area(struct task_struct *p, int idx,
extern int do_set_thread_area(struct task_struct *p, int idx,
struct user_desc __user *info, int can_allocate);
+extern void x86_ptrace_untrace(struct task_struct *);
+extern void x86_ptrace_fork(struct task_struct *child,
+ unsigned long clone_flags);
+
+#define arch_ptrace_untrace(tsk) x86_ptrace_untrace(tsk)
+#define arch_ptrace_fork(child, flags) x86_ptrace_fork(child, flags)
+
#endif /* __KERNEL__ */
#endif /* !__ASSEMBLY__ */