| 15ec3997aa3bffc461f7b47ca9365d4b0323c671 |
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30-Sep-2016 |
Simon Guo <wei.guo.simon@gmail.com> |
selftests/powerpc: Move shared headers into new include dir
There are some functions, especially register related, which can
be shared across multiple selftests/powerpc test directories.
This patch creates a new include directory to store those shared
files, so that the file layout becomes more neat.
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
[mpe: Reworked to move the headers only]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
/external/linux-kselftest/tools/testing/selftests/powerpc/benchmarks/context_switch.c
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| f2418ae8a81760b4dec8d5e3e7f1faf45c422e9d |
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04-Mar-2016 |
Cyril Bur <cyrilbur@gmail.com> |
selftests/powerpc: Fix generation of vector instructions/types in context_switch
Currently it doesn't appear the resulting binary actually uses any
Altivec or VSX instructions the solution is to explicitly tell GCC to
use vector instructions and use vector types in the code.
Part of this this issue can be GCC version specific:
GCC 4.9.x is happy to use Altivec and VSX instructions if altivec.h is
includedi (and possibly if vector types are used), this also means that
4.9.x will use VSX instructions even if only -maltivec is passed. It is
also possible that Altivec instructions will be used even without
-maltivec or -mabi=altivec.
GCC 5.2.x complains about the lack of -maltivec parameter if altivec.h
is included and will not use VSX unless -mvsx is present on commandline.
GCC 5.3.0 has a regression that means __attribute__((__target__("no-vsx"))
fails to build. A fix is targeted for 5.4.
Furthermore LTO (Link Time Optimisation) doesn't play well with
__attribute__((__target__("no-vsx")), LTO can cause GCC to forget about
the attribute and compile with VSX instructions regardless. Be wary when
enabling -flfo for this test.
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
/external/linux-kselftest/tools/testing/selftests/powerpc/benchmarks/context_switch.c
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| 94fa56a96a39914551694673fdb483b8924b0e56 |
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04-Mar-2016 |
Cyril Bur <cyrilbur@gmail.com> |
selftests/powerpc: Fix usage message in context_switch
When we inverted the behaviour of the flags we forgot to update the
usage message.
Fixes: 51c21e72eb99 ("selftests/powerpc: Make context_switch touch FP/altivec/vector by default")
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
/external/linux-kselftest/tools/testing/selftests/powerpc/benchmarks/context_switch.c
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| 51c21e72eb99d1136614135d633baae269893778 |
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02-Dec-2015 |
Michael Ellerman <mpe@ellerman.id.au> |
selftests/powerpc: Make context_switch touch FP/altivec/vector by default
Simply because it touches more code paths that way, and therefore tests
more things.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Anton Blanchard <anton@samba.org>
/external/linux-kselftest/tools/testing/selftests/powerpc/benchmarks/context_switch.c
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| ea0c321784565c681507e02acf900deaa1e9e952 |
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02-Dec-2015 |
Michael Ellerman <mpe@ellerman.id.au> |
selftests/powerpc: Make context_switch do something with no args
For ease of use make the context_switch test do something useful when
called with no arguments.
Default to a 30 second run, using threads, doing yield, and use any
online cpu. Make it print out what it's doing to avoid confusion.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Anton Blanchard <anton@samba.org>
/external/linux-kselftest/tools/testing/selftests/powerpc/benchmarks/context_switch.c
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| 00b7ec5c9cf338902faea2e40801573a384e45be |
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02-Dec-2015 |
Michael Ellerman <mpe@ellerman.id.au> |
selftests/powerpc: Import Anton's context_switch2 benchmark
This gets referred to a lot in commit messages, so let's pull it into
the selftests.
Almost vanilla from: http://ozlabs.org/~anton/junkcode/context_switch2.c
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Anton Blanchard <anton@samba.org>
/external/linux-kselftest/tools/testing/selftests/powerpc/benchmarks/context_switch.c
|