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x86: Replace uses of current_cpu_data with this_cpu ops

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Replace all uses of current_cpu_data with this_cpu operations on the
per cpu structure cpu_info.  The scala accesses are replaced with the
matching this_cpu ops which results in smaller and more efficient
code.

In the long run, it might be a good idea to remove cpu_data() macro
too and use per_cpu macro directly.

tj: updated description

Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Tejun Heo
2010-12-18 16:30:05 +01:00
parent 0a3aee0da4
commit 7b543a5334
11 changed files with 28 additions and 29 deletions
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4
arch/x86/kernel/cpu/intel_cacheinfo.c
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@@ -266,7 +266,7 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
line_size = l2.line_size;
lines_per_tag = l2.lines_per_tag;
/* cpu_data has errata corrections for K7 applied */
size_in_kb = current_cpu_data.x86_cache_size;
size_in_kb = __this_cpu_read(cpu_info.x86_cache_size);
break;
case 3:
if (!l3.val)
@@ -288,7 +288,7 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
eax->split.type = types[leaf];
eax->split.level = levels[leaf];
eax->split.num_threads_sharing = 0;
eax->split.num_cores_on_die = current_cpu_data.x86_max_cores - 1;
eax->split.num_cores_on_die = __this_cpu_read(cpu_info.x86_max_cores) - 1;
if (assoc == 0xffff)