From 45322fa24eb3bdd903d012785cfadfb6dcbeb54c Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@openvz.org>
Date: Mon, 17 Dec 2012 16:04:57 -0800
Subject: [PATCH] --- yaml --- r: 346511 b: refs/heads/master c:
 cbac5542d48127b546a23d816380a7926eee1c25 h: refs/heads/master i:   346509:
 163a41078054a2d5d1c492348b324c61256cca5e   346507:
 a72582a69f575159a5de663c368160738e4f81a7   346503:
 1eb15857fe7b597297f7c52b87daf994f2a0d265   346495:
 8fe7baf35e4f3852ab658057c6bcc126244bb16f v: v3

---
 [refs]             |  2 +-
 trunk/fs/eventfd.c | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index e30ae79c2b16..5eeb2c44d2ed 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 55985dd72ab27b47530dcc8bdddd28b69f4abe8b
+refs/heads/master: cbac5542d48127b546a23d816380a7926eee1c25
diff --git a/trunk/fs/eventfd.c b/trunk/fs/eventfd.c
index d81b9f654086..35470d9b96e6 100644
--- a/trunk/fs/eventfd.c
+++ b/trunk/fs/eventfd.c
@@ -19,6 +19,8 @@
 #include <linux/export.h>
 #include <linux/kref.h>
 #include <linux/eventfd.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 
 struct eventfd_ctx {
 	struct kref kref;
@@ -284,7 +286,25 @@ static ssize_t eventfd_write(struct file *file, const char __user *buf, size_t c
 	return res;
 }
 
+#ifdef CONFIG_PROC_FS
+static int eventfd_show_fdinfo(struct seq_file *m, struct file *f)
+{
+	struct eventfd_ctx *ctx = f->private_data;
+	int ret;
+
+	spin_lock_irq(&ctx->wqh.lock);
+	ret = seq_printf(m, "eventfd-count: %16llx\n",
+			 (unsigned long long)ctx->count);
+	spin_unlock_irq(&ctx->wqh.lock);
+
+	return ret;
+}
+#endif
+
 static const struct file_operations eventfd_fops = {
+#ifdef CONFIG_PROC_FS
+	.show_fdinfo	= eventfd_show_fdinfo,
+#endif
 	.release	= eventfd_release,
 	.poll		= eventfd_poll,
 	.read		= eventfd_read,