From: Rasmus Villemoes Date: Tue, 31 Mar 2015 02:55:05 +0000 (+1030) Subject: linux/cpumask.h: add typechecking to cpumask_test_cpu X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=3bbf7f4624856751aa4cf279a472bd14a8eb16fd;p=deliverable%2Flinux.git linux/cpumask.h: add typechecking to cpumask_test_cpu The Subtlety (1) referred to vanished with 6ba2ef7baac2 ("cpumask: Move deprecated functions to end of header."). That used to mention some suboptimal code generation by a, by now, rather ancient gcc. With gcc 4.7, I don't see any change in the generated code by making it a static inline, so let's add type checking and get rid of the ghost reference. Signed-off-by: Rasmus Villemoes Signed-off-by: Rusty Russell --- diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 4ad2d3c8e21f..89558d0b56ac 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -290,11 +290,11 @@ static inline void cpumask_clear_cpu(int cpu, struct cpumask *dstp) * @cpumask: the cpumask pointer * * Returns 1 if @cpu is set in @cpumask, else returns 0 - * - * No static inline type checking - see Subtlety (1) above. */ -#define cpumask_test_cpu(cpu, cpumask) \ - test_bit(cpumask_check(cpu), cpumask_bits((cpumask))) +static inline int cpumask_test_cpu(int cpu, const struct cpumask *cpumask) +{ + return test_bit(cpumask_check(cpu), cpumask_bits((cpumask))); +} /** * cpumask_test_and_set_cpu - atomically test and set a cpu in a cpumask