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rcu: Mark rcu_nmi_enter() call to rcu_cleanup_after_idle() noinstr

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The objtool complains about the call to rcu_cleanup_after_idle() from
rcu_nmi_enter(), so this commit adds instrumentation_begin() before that
call and instrumentation_end() after it.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2020-05-19 17:00:54 -07:00
parent 55fbe86ef3
commit 04b25a495b
1 changed files with 4 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
kernel/rcu/tree.c
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@ -990,8 +990,11 @@ noinstr void rcu_nmi_enter(void)
rcu_dynticks_eqs_exit();
// ... but is watching here.
if (!in_nmi())
if (!in_nmi()) {
instrumentation_begin();
rcu_cleanup_after_idle();
instrumentation_end();
}
instrumentation_begin();
// instrumentation for the noinstr rcu_dynticks_curr_cpu_in_eqs()