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authorYu-Ting Tseng <yutingtseng@google.com>2024-07-09 00:00:49 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-07-31 13:56:00 +0200
commit30b968b002a92870325a5c9d1ce78eba0ce386e7 (patch)
treefcfb082b2a98037d9e2b62e3772c6bedb07eb9ec
parentd579b04a52a183db47dfcb7a44304d7747d551e1 (diff)
binder: frozen notification binder_features flag
Add a flag to binder_features to indicate that the freeze notification feature is available. Signed-off-by: Yu-Ting Tseng <yutingtseng@google.com> Acked-by: Carlos Llamas <cmllamas@google.com> Link: https://lore.kernel.org/r/20240709070047.4055369-6-yutingtseng@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/android/binderfs.c8
-rw-r--r--tools/testing/selftests/filesystems/binderfs/binderfs_test.c1
2 files changed, 9 insertions, 0 deletions
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);