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authorMarkus Metzger <markus.t.metzger@intel.com>2009-04-03 16:43:35 +0200
committerIngo Molnar <mingo@elte.hu>2009-04-07 13:36:13 +0200
commite2b371f00a6f529f6362654239bdec8dcd510760 (patch)
tree36e47cd9fb949fd72893c2d5ddab489fa55b1869 /include/linux/sched.h
parenta26b89f05d194413c7238e0bea071054f6b5d3c8 (diff)
mm, x86, ptrace, bts: defer branch trace stopping
When a ptraced task is unlinked, we need to stop branch tracing for that task. Since the unlink is called with interrupts disabled, and we need interrupts enabled to stop branch tracing, we defer the work. Collect all branch tracing related stuff in a branch tracing context. Reviewed-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: roland@redhat.com Cc: eranian@googlemail.com Cc: juan.villacis@intel.com Cc: ak@linux.jf.intel.com LKML-Reference: <20090403144550.712401000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/sched.h')
-rw-r--r--include/linux/sched.h9
1 files changed, 2 insertions, 7 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index a5b9a83065f..52b8cd049c2 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -96,8 +96,8 @@ struct exec_domain;
struct futex_pi_state;
struct robust_list_head;
struct bio;
-struct bts_tracer;
struct fs_struct;
+struct bts_context;
/*
* List of flags we want to share for kernel threads,
@@ -1210,12 +1210,7 @@ struct task_struct {
* This is the tracer handle for the ptrace BTS extension.
* This field actually belongs to the ptracer task.
*/
- struct bts_tracer *bts;
- /*
- * The buffer to hold the BTS data.
- */
- void *bts_buffer;
- size_t bts_size;
+ struct bts_context *bts;
#endif /* CONFIG_X86_PTRACE_BTS */
/* PID/PID hash table linkage. */