From d576a9561a1c80ae593539fb0ce0743d66825ac2 Mon Sep 17 00:00:00 2001 From: Andi Shyti Date: Sat, 22 Aug 2026 14:19:12 +0200 Subject: Merge tag 'rust-i2c-for-7.3' into i2c/i2c i2c: rust: mark I2cAdapter methods as inline A single cleanup for the Rust I2C abstractions, targeting 7.3. `I2cAdapter::get`, `inc_ref`, and `dec_ref` are trivial wrappers around `i2c_get_adapter`/`i2c_put_adapter` and were showing up as their own symbols in the build. Mark them `#[inline]` so they get folded into their callers instead. Signed-off-by: Igor Korotin * tag 'rust-i2c-for-7.3': i2c: rust: mark I2cAdapter methods as inline --- drivers/virtio/virtio_debug.c | 117 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 117 insertions(+) create mode 100644 drivers/virtio/virtio_debug.c (limited to 'drivers/virtio/virtio_debug.c') diff --git a/drivers/virtio/virtio_debug.c b/drivers/virtio/virtio_debug.c new file mode 100644 index 000000000..ccf1955a1 --- /dev/null +++ b/drivers/virtio/virtio_debug.c @@ -0,0 +1,117 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include +#include +#include + +static struct dentry *virtio_debugfs_dir; + +static int virtio_debug_device_features_show(struct seq_file *s, void *data) +{ + u64 device_features[VIRTIO_FEATURES_U64S]; + struct virtio_device *dev = s->private; + unsigned int i; + + virtio_get_features(dev, device_features); + for (i = 0; i < VIRTIO_FEATURES_BITS; i++) { + if (virtio_features_test_bit(device_features, i)) + seq_printf(s, "%u\n", i); + } + return 0; +} +DEFINE_SHOW_ATTRIBUTE(virtio_debug_device_features); + +static int virtio_debug_filter_features_show(struct seq_file *s, void *data) +{ + struct virtio_device *dev = s->private; + unsigned int i; + + for (i = 0; i < VIRTIO_FEATURES_BITS; i++) { + if (virtio_features_test_bit(dev->debugfs_filter_features, i)) + seq_printf(s, "%u\n", i); + } + return 0; +} +DEFINE_SHOW_ATTRIBUTE(virtio_debug_filter_features); + +static int virtio_debug_filter_features_clear(void *data, u64 val) +{ + struct virtio_device *dev = data; + + if (val == 1) + virtio_features_zero(dev->debugfs_filter_features); + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(virtio_debug_filter_features_clear_fops, NULL, + virtio_debug_filter_features_clear, "%llu\n"); + +static int virtio_debug_filter_feature_add(void *data, u64 val) +{ + struct virtio_device *dev = data; + + if (val >= VIRTIO_FEATURES_BITS) + return -EINVAL; + + virtio_features_set_bit(dev->debugfs_filter_features, val); + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(virtio_debug_filter_feature_add_fops, NULL, + virtio_debug_filter_feature_add, "%llu\n"); + +static int virtio_debug_filter_feature_del(void *data, u64 val) +{ + struct virtio_device *dev = data; + + if (val >= VIRTIO_FEATURES_BITS) + return -EINVAL; + + virtio_features_clear_bit(dev->debugfs_filter_features, val); + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(virtio_debug_filter_feature_del_fops, NULL, + virtio_debug_filter_feature_del, "%llu\n"); + +void virtio_debug_device_init(struct virtio_device *dev) +{ + dev->debugfs_dir = debugfs_create_dir(dev_name(&dev->dev), + virtio_debugfs_dir); + debugfs_create_file("device_features", 0400, dev->debugfs_dir, dev, + &virtio_debug_device_features_fops); + debugfs_create_file("filter_features", 0400, dev->debugfs_dir, dev, + &virtio_debug_filter_features_fops); + debugfs_create_file("filter_features_clear", 0200, dev->debugfs_dir, dev, + &virtio_debug_filter_features_clear_fops); + debugfs_create_file("filter_feature_add", 0200, dev->debugfs_dir, dev, + &virtio_debug_filter_feature_add_fops); + debugfs_create_file("filter_feature_del", 0200, dev->debugfs_dir, dev, + &virtio_debug_filter_feature_del_fops); +} +EXPORT_SYMBOL_GPL(virtio_debug_device_init); + +void virtio_debug_device_filter_features(struct virtio_device *dev) +{ + virtio_features_andnot(dev->features_array, dev->features_array, + dev->debugfs_filter_features); +} +EXPORT_SYMBOL_GPL(virtio_debug_device_filter_features); + +void virtio_debug_device_exit(struct virtio_device *dev) +{ + debugfs_remove_recursive(dev->debugfs_dir); +} +EXPORT_SYMBOL_GPL(virtio_debug_device_exit); + +void virtio_debug_init(void) +{ + virtio_debugfs_dir = debugfs_create_dir("virtio", NULL); +} +EXPORT_SYMBOL_GPL(virtio_debug_init); + +void virtio_debug_exit(void) +{ + debugfs_remove_recursive(virtio_debugfs_dir); +} +EXPORT_SYMBOL_GPL(virtio_debug_exit); -- cgit v1.3.1