From 29f1953d51faa3995192ba4ccff3b71c661940c2 Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Sat, 27 Jul 2013 11:00:49 +0800 Subject: [PATCH] cpu topology: remove stale arch_provides_topology_pointers and define_siblings_show_map/list() arch_provides_topology_pointers was introduced in commit 23ca4bba3 (x86: cleanup early per cpu variables/accesses v4) to indicate pointers to the topology cpumask_t maps are valid to avoid copying data on to/off of the stack. But later in commit fbd59a8d (cpumask: Use topology_core_cpumask()/ topology_thread_cpumask()), the pointers to the topology struct cpumask maps are always valid. After that commit, the only difference is that there is a redundant "unsigned int cpu = dev->id;" if arch_provides_topology_pointers defined, but dev->id is type 'u32' which devolves to 'unsigned int' on all supported arches. So this arch_provides_topology_pointers define is pointless and only cause obfuscation now, remove it. Tested on x86 machine, topology information in sys/devices/system/cpu/ cpuX/topology/ is the same after appling this patch set. Signed-off-by: Hanjun Guo Signed-off-by: Greg Kroah-Hartman --- drivers/base/topology.c | 20 -------------------- 1 file changed, 20 deletions(-) diff --git a/drivers/base/topology.c b/drivers/base/topology.c index 2f5919ed91ab..94ffee378f10 100644 --- a/drivers/base/topology.c +++ b/drivers/base/topology.c @@ -62,25 +62,6 @@ static ssize_t show_cpumap(int type, const struct cpumask *mask, char *buf) } #endif -#ifdef arch_provides_topology_pointers -#define define_siblings_show_map(name) \ -static ssize_t show_##name(struct device *dev, \ - struct device_attribute *attr, char *buf) \ -{ \ - unsigned int cpu = dev->id; \ - return show_cpumap(0, topology_##name(cpu), buf); \ -} - -#define define_siblings_show_list(name) \ -static ssize_t show_##name##_list(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ - unsigned int cpu = dev->id; \ - return show_cpumap(1, topology_##name(cpu), buf); \ -} - -#else #define define_siblings_show_map(name) \ static ssize_t show_##name(struct device *dev, \ struct device_attribute *attr, char *buf) \ @@ -95,7 +76,6 @@ static ssize_t show_##name##_list(struct device *dev, \ { \ return show_cpumap(1, topology_##name(dev->id), buf); \ } -#endif #define define_siblings_show_func(name) \ define_siblings_show_map(name); define_siblings_show_list(name) -- 2.20.1