[haiku-commits] r36556 - haiku/trunk/src/system/kernel
- From: ingo_weinhold@xxxxxx
- To: haiku-commits@xxxxxxxxxxxxx
- Date: Fri, 30 Apr 2010 20:33:25 +0200 (CEST)
Author: bonefish
Date: 2010-04-30 20:33:25 +0200 (Fri, 30 Apr 2010)
New Revision: 36556
Changeset: http://dev.haiku-os.org/changeset/36556/haiku
Modified:
haiku/trunk/src/system/kernel/smp.cpp
Log:
Documented smp_cpu_rendezvous().
Modified: haiku/trunk/src/system/kernel/smp.cpp
===================================================================
--- haiku/trunk/src/system/kernel/smp.cpp 2010-04-30 16:09:54 UTC (rev
36555)
+++ haiku/trunk/src/system/kernel/smp.cpp 2010-04-30 18:33:25 UTC (rev
36556)
@@ -1076,7 +1076,17 @@
}
}
-/* have all cpus spin until all have run */
+
+/*! Spin until all CPUs have reached the rendez-vous point.
+
+ The rendez-vous variable \c *var must have been initialized to 0 before
the
+ function is called. The variable will be non-null when the function
returns.
+
+ Note that when the function returns on one CPU, it only means that all
CPU
+ have already entered the function. It does not mean that the variable
can
+ already be reset. Only when all CPUs have returned (which would have to
be
+ ensured via another rendez-vous) the variable can be reset.
+*/
void
smp_cpu_rendezvous(volatile uint32 *var, int current_cpu)
{
@@ -1086,6 +1096,7 @@
PAUSE();
}
+
status_t
smp_init(kernel_args *args)
{
Other related posts:
- » [haiku-commits] r36556 - haiku/trunk/src/system/kernel - ingo_weinhold
