lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

x86, ptrace: add bts context unconditionally

Browse Source 
Add the ptrace bts context field to task_struct unconditionally.

Initialize the field directly in copy_process().
Remove all the unneeded functionality used to initialize that field.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Cc: roland@redhat.com
Cc: eranian@googlemail.com
Cc: oleg@redhat.com
Cc: juan.villacis@intel.com
Cc: ak@linux.jf.intel.com
LKML-Reference: <20090403144603.292754000@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Markus Metzger
2009-04-03 16:43:48 +02:00
committed by Ingo Molnar
parent ee811517a5
commit 0f4814065f
6 changed files with 7 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
arch/x86/kernel/ptrace.c
View File

@@ -887,37 +887,19 @@ static int ptrace_bts_size(struct task_struct *child)
return (trace->ds.top - trace->ds.begin) / trace->ds.size;
}
static inline void ptrace_bts_fork(struct task_struct *tsk)
{
tsk->bts = NULL;
}
/*
* Called from __ptrace_unlink() after the child has been moved back
* to its original parent.
*/
static inline void ptrace_bts_untrace(struct task_struct *child)
void ptrace_bts_untrace(struct task_struct *child)
{
if (unlikely(child->bts)) {
free_bts_context(child->bts);
child->bts = NULL;
}
}
#else
static inline void ptrace_bts_fork(struct task_struct *tsk) {}
static inline void ptrace_bts_untrace(struct task_struct *child) {}
#endif /* CONFIG_X86_PTRACE_BTS */
void x86_ptrace_fork(struct task_struct *child, unsigned long clone_flags)
{
ptrace_bts_fork(child);
}
void x86_ptrace_untrace(struct task_struct *child)
{
ptrace_bts_untrace(child);
}
/*
* Called by kernel/ptrace.c when detaching..
*