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Fix /proc/cpuinfo topology and cache size info

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* autoload.cc (GetLogicalProcessorInformationEx): Import.
        (SetThreadGroupAffinity): Import.
        * fhandler_proc.cc (add_size): New macro.
        (get_msb): New inline function.
        (mask_bits): Ditto.
        (format_proc_cpuinfo): Drop handling of old CPUs.  Check if we're
        running on a OS version supporting porcessor groups.  If so, use
        SetThreadGroupAffinity to set thread affinity.  Improve cache info
        to include 3rd level cache on Intel CPUs.  Improve multi core info.
        * wincap.h (wincaps::has_processor_groups): New element.
        * wincap.cc: Implement above element throughout.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2015-08-13 17:59:47 +02:00
parent 1e15b46737
commit e0d48debed
6 changed files with 639 additions and 511 deletions
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10
winsup/cygwin/release/2.2.1
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@ -5,11 +5,13 @@ What's new:
What changed:
-------------
- Revert the following patch from 2.2.0:
When started from a non-Cygwin process, check if $HOME starts with a
slash (absolute POSIX path). Otherwise ignore it.
Bug Fixes
---------
- Revert the following patch from 2.2.0:
When started from a non-Cygwin process, check if $HOME starts with a
slash (absolute POSIX path). Otherwise ignore it.
- Fix output of /proc/cpuinfo in terms of cpu topology and cache size for
modern CPUs and modern Windows OSes supporting more than 64 logical CPUs.