[PATCH 10/22] udev: Use shared NoopDDA to utilize code cache better

[Pauli]

From: Pauli Nieminen <ext-pauli.nieminen at nokia.com>

Calling function that is in code cache is order of magnitude faster. In
arm non-cached simple function takes about 1us while cached function
takes max 200ns.

Signed-off-by: Pauli Nieminen <ext-pauli.nieminen at nokia.com>
---
 config/udev.c |    9 ++-------
 1 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/config/udev.c b/config/udev.c
index 496bfbf..393723c 100644
--- a/config/udev.c
+++ b/config/udev.c
@@ -253,11 +253,6 @@ wakeup_handler(pointer data, int err, pointer read_mask)
     }
 }
 
-static void
-block_handler(pointer data, struct timeval **tv, pointer read_mask)
-{
-}
-
 int
 config_udev_init(void)
 {
@@ -290,7 +285,7 @@ config_udev_init(void)
     }
     udev_enumerate_unref(enumerate);
 
-    RegisterBlockAndWakeupHandlers(block_handler, wakeup_handler, NULL);
+    RegisterBlockAndWakeupHandlers((BlockHandlerProcPtr)NoopDDA, wakeup_handler, NULL);
     AddGeneralSocket(udev_monitor_get_fd(udev_monitor));
 
     return 1;
@@ -307,7 +302,7 @@ config_udev_fini(void)
     udev = udev_monitor_get_udev(udev_monitor);
 
     RemoveGeneralSocket(udev_monitor_get_fd(udev_monitor));
-    RemoveBlockAndWakeupHandlers(block_handler, wakeup_handler, udev_monitor);
+    RemoveBlockAndWakeupHandlers((BlockHandlerProcPtr)NoopDDA, wakeup_handler, udev_monitor);
     udev_monitor_unref(udev_monitor);
     udev_monitor = NULL;
     udev_unref(udev);
-- 
1.7.0.4