lttng-libust: new package

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/Config.in

@@ -378,6 +378,7 @@ source "package/libical/Config.in"
 source "package/libnspr/Config.in"
 source "package/libsigc/Config.in"
 source "package/liburcu/Config.in"
+source "package/lttng-libust/Config.in"
 source "package/orc/Config.in"
 source "package/poco/Config.in"
 source "package/startup-notification/Config.in"

package/lttng-libust/Config.in

@@ -0,0 +1,10 @@
+config BR2_PACKAGE_LTTNG_LIBUST
+	bool "lttng-libust"
+	select BR2_PACKAGE_LIBURCU
+	help
+	  Userspace tracing library for the Lttng tracing
+	  infrastructure. It allows userspace programs to create
+	  custom trace events that are integrated with all other
+	  events gathered by LTTng.
+
+	  http://lttng.org

package/lttng-libust/lttng-libust-fix-overflow-32-bits.patch

@@ -0,0 +1,26 @@
+From dc190cc1f8ddccfa7b0b8323ed157afb29a0ebb7 Mon Sep 17 00:00:00 2001
+From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+Date: Wed, 21 Dec 2011 16:24:48 -0500
+Subject: [PATCH] Fix clock source overflow on 32-bit archs
+
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+---
+ liblttng-ust/clock.h |    2 +-
+ 1 files changed, 1 insertions(+), 1 deletions(-)
+
+diff --git a/liblttng-ust/clock.h b/liblttng-ust/clock.h
+index b5d3e77..23294d2 100644
+--- a/liblttng-ust/clock.h
++++ b/liblttng-ust/clock.h
+@@ -39,7 +39,7 @@ static __inline__ uint64_t trace_clock_read64(void)
+ 	struct timespec ts;
+ 
+ 	clock_gettime(CLOCK_MONOTONIC, &ts);
+-	return (ts.tv_sec * 1000000000) + ts.tv_nsec;
++	return ((uint64_t) ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
+ }
+ 
+ static __inline__ uint32_t trace_clock_freq_scale(void)
+-- 
+1.7.2.5
+

package/lttng-libust/lttng-libust.mk

@@ -0,0 +1,8 @@
+LTTNG_LIBUST_SITE    = http://lttng.org/files/bundles/20111214/
+LTTNG_LIBUST_VERSION = 1.9.2
+LTTNG_LIBUST_SOURCE  = lttng-ust-$(LTTNG_LIBUST_VERSION).tar.gz
+
+LTTNG_LIBUST_INSTALL_STAGING = YES
+LTTNG_LIBUST_DEPENDENCIES    = liburcu
+
+$(eval $(call AUTOTARGETS))