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authorOleg Nesterov <oleg@tv-sign.ru>2008-07-25 01:47:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 10:53:40 -0700
commitb564daf806d492dd4f7afe9b6c83b8d35d137669 (patch)
treefbd6d186035b9a0a270fca97887da5d6b106a60c /include
parent9d5b327bf198d2720666de958dcc2ae219d86952 (diff)
coredump: construct the list of coredumping threads at startup time
binfmt->core_dump() has to iterate over the all threads in system in order to find the coredumping threads and construct the list using the GFP_ATOMIC allocations. With this patch each thread allocates the list node on exit_mm()'s stack and adds itself to the list. This allows us to do further changes: - simplify ->core_dump() - change exit_mm() to clear ->mm first, then wait for ->core_done. this makes the coredumping process visible to oom_kill - kill mm->core_done Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mm_types.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index ae99a28ba6a..4d0d0abc79f 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -159,8 +159,14 @@ struct vm_area_struct {
#endif
};
+struct core_thread {
+ struct task_struct *task;
+ struct core_thread *next;
+};
+
struct core_state {
atomic_t nr_threads;
+ struct core_thread dumper;
struct completion startup;
};