rcu-tasks: Track blocked RCU Tasks Trace readers

[linux-2.6-microblaze.git] / include / linux / rcupdate_trace.h

diff --git a/include/linux/rcupdate_trace.h b/include/linux/rcupdate_trace.h
index 6f9c358..9bc8cbb 100644 (file)
--- a/include/linux/rcupdate_trace.h
+++ b/include/linux/rcupdate_trace.h
@@ -75,7 +75,7 @@ static inline void rcu_read_unlock_trace(void)
        nesting = READ_ONCE(t->trc_reader_nesting) - 1;
        barrier(); // Critical section before disabling.
        // Disable IPI-based setting of .need_qs.
-       WRITE_ONCE(t->trc_reader_nesting, INT_MIN);
+       WRITE_ONCE(t->trc_reader_nesting, INT_MIN + nesting);
        if (likely(!READ_ONCE(t->trc_reader_special.s)) || nesting) {
                WRITE_ONCE(t->trc_reader_nesting, nesting);
                return;  // We assume shallow reader nesting.