linux-kernel - [PATCH 3/3] binder: filter out nodes when showing binder procs

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Date:   Wed,  5 Dec 2018 15:19:26 -0800
From:   Todd Kjos <tkjos@...roid.com>
To:     tkjos@...gle.com, gregkh@...uxfoundation.org, arve@...roid.com,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        maco@...gle.com, joel@...lfernandes.org
Cc:     kernel-team@...roid.com
Subject: [PATCH 3/3] binder: filter out nodes when showing binder procs

When dumping out binder transactions via a debug node,
the output is too verbose if a process has many nodes.
Change the output for transaction dumps to only display
nodes with pending async transactions.

Signed-off-by: Todd Kjos <tkjos@...gle.com>
---
v2: no change, just resubmitted as #3 of 3 patches instead of by itself
There is no actual dependancy on patches 1 and 2 of the series

 drivers/android/binder.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 172c207fbf99d..cbaef3b0d3078 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -5440,6 +5440,9 @@ static void print_binder_proc(struct seq_file *m,
 	for (n = rb_first(&proc->nodes); n != NULL; n = rb_next(n)) {
 		struct binder_node *node = rb_entry(n, struct binder_node,
 						    rb_node);
+		if (!print_all && !node->has_async_transaction)
+			continue;
+
 		/*
 		 * take a temporary reference on the node so it
 		 * survives and isn't removed from the tree
-- 
2.20.0.rc1.387.gf8505762e3-goog