The patch titled
signals: introduce tracehook_finish_jctl() helper
has been added to the -mm tree. Its filename is
signals-introduce-tracehook_finish_jctl-helper.patch
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------------------------------------------------------
Subject: signals: introduce tracehook_finish_jctl() helper
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Introduce the empty inline tracehook_finish_jctl() helper called by
do_signal_stop() after wakeup.
Currently we lack the ability to report this state change.
Also fix the comment, it should be placed before schedule().
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Roland McGrath <roland@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/tracehook.h | 9 +++++++++
kernel/signal.c | 6 +++---
2 files changed, 12 insertions(+), 3 deletions(-)
diff -puN include/linux/tracehook.h~signals-introduce-tracehook_finish_jctl-helper include/linux/tracehook.h
--- a/include/linux/tracehook.h~signals-introduce-tracehook_finish_jctl-helper
+++ a/include/linux/tracehook.h
@@ -488,6 +488,15 @@ static inline int tracehook_notify_jctl(
return notify ?: (current->ptrace & PT_PTRACED) ? why : 0;
}
+/**
+ * tracehook_finish_jctl - report about return from job control stop
+ *
+ * This is called by do_signal_stop() after wakeup.
+ */
+static inline void tracehook_finish_jctl(void)
+{
+}
+
#define DEATH_REAP -1
#define DEATH_DELAYED_GROUP_LEADER -2
diff -puN kernel/signal.c~signals-introduce-tracehook_finish_jctl-helper kernel/signal.c
--- a/kernel/signal.c~signals-introduce-tracehook_finish_jctl-helper
+++ a/kernel/signal.c
@@ -1726,12 +1726,12 @@ static int do_signal_stop(int signr)
read_unlock(&tasklist_lock);
}
+ /* Now we don't run again until woken by SIGCONT or SIGKILL */
do {
schedule();
} while (try_to_freeze());
- /*
- * Now we don't run again until continued.
- */
+
+ tracehook_finish_jctl();
current->exit_code = 0;
return 1;
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
origin.patch
linux-next.patch
getrusage-fill-ru_maxrss-value.patch
getrusage-fill-ru_maxrss-value-update.patch
proc_flush_task-flush-proc-tid-task-pid-when-a-sub-thread-exits.patch
ptrace-__ptrace_detach-do-__wake_up_parent-if-we-reap-the-tracee.patch
do_wait-wakeup-optimization-shift-security_task_wait-from-eligible_child-to-wait_consider_task.patch
do_wait-wakeup-optimization-change-__wake_up_parent-to-use-filtered-wakeup.patch
do_wait-wakeup-optimization-change-__wake_up_parent-to-use-filtered-wakeup-selinux_bprm_committed_creds-use-__wake_up_parent.patch
do_wait-wakeup-optimization-child_wait_callback-check-__wnothread-case.patch
do_wait-optimization-do-not-place-sub-threads-on-task_struct-children-list.patch
wait_consider_task-kill-parent-argument.patch
do_wait-fix-sys_waitid-specific-behaviour.patch
wait_noreap_copyout-check-for-wo_info-=-null.patch
signals-tracehook_notify_jctl-change.patch
signals-tracehook_notify_jctl-change-do_signal_stop-do-not-call-tracehook_notify_jctl-in-task_stopped-state.patch
signals-introduce-tracehook_finish_jctl-helper.patch
utrace-core.patch
exec-fix-set_binfmt-vs-sys_delete_module-race.patch
fork-disable-clone_parent-for-init.patch
pidns-deny-clone_parentclone_newpid-combination.patch
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