From c85e62f37e4db48038e4494c202f5a2c923262f2 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Thu, 9 Aug 2012 10:10:08 -0400 Subject: [PATCH] urcu: add hint to DEFINE_URCU_TLS() for compound types Just a hint. Signed-off-by: Lai Jiangshan Signed-off-by: Mathieu Desnoyers --- urcu/tls-compat.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/urcu/tls-compat.h b/urcu/tls-compat.h index 9686eca..192a536 100644 --- a/urcu/tls-compat.h +++ b/urcu/tls-compat.h @@ -34,6 +34,21 @@ extern "C" { #ifdef CONFIG_RCU_TLS /* Based on ax_tls.m4 */ +/* + * Hint: How to define/declare TLS variables of compound types + * such as array or function pointers? + * + * Answer: Use typedef to assign a type_name to the compound type. + * Example: Define a TLS variable which is an int array with len=4: + * + * typedef int my_int_array_type[4]; + * DEFINE_URCU_TLS(my_int_array_type, var_name); + * + * Another exmaple: + * typedef void (*call_rcu_flavor)(struct rcu_head *, XXXX); + * DECLARE_URCU_TLS(call_rcu_flavor, p_call_rcu); + */ + # define DECLARE_URCU_TLS(type, name) \ CONFIG_RCU_TLS type name -- 2.34.1