Merge "kernel: cgroup: add poll file operation" (e4bc0b3b) · Commits · e / devices / android_kernel_oneplus_sm7250

include/linux/cgroup-defs.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -32,6 +32,7 @@ struct kernfs_node;
		struct kernfs_ops;
		struct kernfs_open_file;
		struct seq_file;
		struct poll_table_struct;

		#define MAX_CGROUP_TYPE_NAMELEN 32
		#define MAX_CGROUP_ROOT_NAMELEN 64
		@@ -573,6 +574,9 @@ struct cftype {
		ssize_t (write)(struct kernfs_open_file of,
		char *buf, size_t nbytes, loff_t off);

		__poll_t (poll)(struct kernfs_open_file of,
		struct poll_table_struct *pt);

		#ifdef CONFIG_DEBUG_LOCK_ALLOC
		struct lock_class_key lockdep_key;
		#endif

+12 −0

Original line number	Diff line number	Diff line
		@@ -3499,6 +3499,16 @@ static ssize_t cgroup_file_write(struct kernfs_open_file of, char buf,
		return ret ?: nbytes;
		}

		static __poll_t cgroup_file_poll(struct kernfs_open_file of, poll_table pt)
		{
		struct cftype *cft = of->kn->priv;

		if (cft->poll)
		return cft->poll(of, pt);

		return kernfs_generic_poll(of, pt);
		}

		static void cgroup_seqfile_start(struct seq_file seq, loff_t *ppos)
		{
		return seq_cft(seq)->seq_start(seq, ppos);
		@@ -3537,6 +3547,7 @@ static struct kernfs_ops cgroup_kf_single_ops = {
		.open = cgroup_file_open,
		.release = cgroup_file_release,
		.write = cgroup_file_write,
		.poll = cgroup_file_poll,
		.seq_show = cgroup_seqfile_show,
		};

		@@ -3545,6 +3556,7 @@ static struct kernfs_ops cgroup_kf_ops = {
		.open = cgroup_file_open,
		.release = cgroup_file_release,
		.write = cgroup_file_write,
		.poll = cgroup_file_poll,
		.seq_start = cgroup_seqfile_start,
		.seq_next = cgroup_seqfile_next,
		.seq_stop = cgroup_seqfile_stop,