X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=README;h=e5c04b179cae49d202a49809d09a76f714ada711;hp=7753c8f957dfbf6acd9244b2fa2d9759879bc3f3;hb=074d8438a30f7da8ae12eb94caff69c37fb576bd;hpb=0a1d290b4432036a7c1bf4a1b251ec9086036a87

diff --git a/README b/README
index 7753c8f..e5c04b1 100644
--- a/README
+++ b/README
@@ -5,6 +5,8 @@ BUILDING
 --------
 
 	make
+	#force 32-bit build with: make -f Makefile32
+	#force 64-bit build with: make -f Makefile64
 	make install
 	
 
@@ -31,7 +33,7 @@ Usage of liburcu
 Usage of liburcu-mb
 
 	* #include <urcu.h>
-	* Compile code with "-DURCU_MB"
+	* Compile any _LGPL_SOURCE code using this library with "-DURCU_MB".
 	* Link with "-lurcu-mb".
 	* This version of the urcu library does not need to
 	  reserve a signal number. URCU_MB uses full memory barriers for
@@ -52,7 +54,9 @@ Initialization
 
 	Each thread that has reader critical sections (that uses
 	rcu_read_lock()/rcu_read_unlock() must first register to the URCU
-	library. This is done by calling rcu_register_thread().
+	library. This is done by calling rcu_register_thread(). Unregistration
+	must be performed before exiting the thread by using
+	rcu_unregister_thread().
 
 Reading
 
@@ -66,6 +70,15 @@ Writing
 	After, synchronize_rcu() must be called. When it returns, the old
 	values are not in usage anymore.
 
+Usage of liburcu-defer
+
+	* #include <urcu-defer.h>
+	* Link with "-lurcu-defer"
+	* Provides call_rcu() primitive to enqueue delayed callbacks. Queued
+	  callbacks are executed in batch periodically after a grace period.
+	  Do _not_ use call_rcu() within a read-side critical section, because
+	  it may call synchronize_rcu() if the thread queue is full.
+
 Being careful with signals
 
 	The liburcu library uses signals internally. The signal handler is