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Message-ID: <20240702230453.1441209-2-yutingtseng@google.com>
Date: Tue, 2 Jul 2024 16:04:54 -0700
From: Yu-Ting Tseng <yutingtseng@...gle.com>
To: cmllamas@...gle.com, tkjos@...gle.com
Cc: gregkh@...uxfoundation.org, arve@...roid.com, maco@...roid.com,
joel@...lfernandes.org, brauner@...nel.org, surenb@...gle.com,
aliceryhl@...gle.com, kernel-team@...roid.com, linux-kernel@...r.kernel.org,
Yu-Ting Tseng <yutingtseng@...gle.com>
Subject: [PATCH v1] binder: frozen notification binder_features flag
Add a flag to binder_features to indicate that the freeze notification
feature is available.
---
drivers/android/binderfs.c | 8 ++++++++
.../selftests/filesystems/binderfs/binderfs_test.c | 1 +
2 files changed, 9 insertions(+)
diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c
index 3001d754ac36..ad1fa7abc323 100644
--- a/drivers/android/binderfs.c
+++ b/drivers/android/binderfs.c
@@ -58,6 +58,7 @@ enum binderfs_stats_mode {
struct binder_features {
bool oneway_spam_detection;
bool extended_error;
+ bool freeze_notification;
};
static const struct constant_table binderfs_param_stats[] = {
@@ -74,6 +75,7 @@ static const struct fs_parameter_spec binderfs_fs_parameters[] = {
static struct binder_features binder_features = {
.oneway_spam_detection = true,
.extended_error = true,
+ .freeze_notification = true,
};
static inline struct binderfs_info *BINDERFS_SB(const struct super_block *sb)
@@ -608,6 +610,12 @@ static int init_binder_features(struct super_block *sb)
if (IS_ERR(dentry))
return PTR_ERR(dentry);
+ dentry = binderfs_create_file(dir, "freeze_notification",
+ &binder_features_fops,
+ &binder_features.freeze_notification);
+ if (IS_ERR(dentry))
+ return PTR_ERR(dentry);
+
return 0;
}
diff --git a/tools/testing/selftests/filesystems/binderfs/binderfs_test.c b/tools/testing/selftests/filesystems/binderfs/binderfs_test.c
index 5f362c0fd890..319567f0fae1 100644
--- a/tools/testing/selftests/filesystems/binderfs/binderfs_test.c
+++ b/tools/testing/selftests/filesystems/binderfs/binderfs_test.c
@@ -65,6 +65,7 @@ static int __do_binderfs_test(struct __test_metadata *_metadata)
static const char * const binder_features[] = {
"oneway_spam_detection",
"extended_error",
+ "freeze_notification",
};
change_mountns(_metadata);
--
2.45.2.803.g4e1b14247a-goog
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