Bluetooth: avoid rebuilding hci_sock all the time
Instead, allow using string formatting with send_monitor_note()
and access init_utsname().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 41f579b..1298d72 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -25,9 +25,8 @@
/* Bluetooth HCI sockets. */
#include <linux/export.h>
+#include <linux/utsname.h>
#include <asm/unaligned.h>
-#include <generated/compile.h>
-#include <generated/utsrelease.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
@@ -385,17 +384,26 @@
return skb;
}
-static void send_monitor_note(struct sock *sk, const char *text)
+static void __printf(2, 3)
+send_monitor_note(struct sock *sk, const char *fmt, ...)
{
- size_t len = strlen(text);
+ size_t len;
struct hci_mon_hdr *hdr;
struct sk_buff *skb;
+ va_list args;
+
+ va_start(args, fmt);
+ len = vsnprintf(NULL, 0, fmt, args);
+ va_end(args);
skb = bt_skb_alloc(len + 1, GFP_ATOMIC);
if (!skb)
return;
- strcpy(skb_put(skb, len + 1), text);
+ va_start(args, fmt);
+ vsprintf(skb_put(skb, len), fmt, args);
+ *skb_put(skb, 1) = 0;
+ va_end(args);
__net_timestamp(skb);
@@ -897,10 +905,11 @@
*/
hci_sock_set_flag(sk, HCI_SOCK_TRUSTED);
- send_monitor_note(sk, "Linux version " UTS_RELEASE
- " (" UTS_MACHINE ")");
- send_monitor_note(sk, "Bluetooth subsystem version "
- BT_SUBSYS_VERSION);
+ send_monitor_note(sk, "Linux version %s (%s)",
+ init_utsname()->release,
+ init_utsname()->machine);
+ send_monitor_note(sk, "Bluetooth subsystem version %s",
+ BT_SUBSYS_VERSION);
send_monitor_replay(sk);
atomic_inc(&monitor_promisc);