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| author | Hanjun Guo <hanjun.guo@linaro.org> | 2013-07-27 11:00:49 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-29 13:12:45 -0700 |
| commit | 29f1953d51faa3995192ba4ccff3b71c661940c2 (patch) | |
| tree | 4b27ba3f5347e018e983712efb3a419e2125e9b8 /drivers/base/topology.c | |
| parent | f21e683508ead3ad8db7ffef3d8b5802c3b43e9a (diff) | |
| download | linux-29f1953d51faa3995192ba4ccff3b71c661940c2.tar.bz2 | |
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 <hanjun.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/topology.c')
| -rw-r--r-- | drivers/base/topology.c | 20 |
1 files changed, 0 insertions, 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) |