Revision tags: v6.6.25, v6.6.24, v6.6.23, v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8, v6.6.7, v6.6.6, v6.6.5, v6.6.4, v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6, v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3, v6.5.2, v6.1.51, v6.5.1, v6.1.50, v6.5, v6.1.49, v6.1.48, v6.1.46, v6.1.45, v6.1.44, v6.1.43, v6.1.42, v6.1.41, v6.1.40, v6.1.39, v6.1.38, v6.1.37, v6.1.36, v6.4, v6.1.35, v6.1.34, v6.1.33, v6.1.32, v6.1.31, v6.1.30, v6.1.29, v6.1.28, v6.1.27, v6.1.26, v6.3, v6.1.25, v6.1.24, v6.1.23, v6.1.22, v6.1.21, v6.1.20, v6.1.19, v6.1.18, v6.1.17, v6.1.16, v6.1.15, v6.1.14, v6.1.13, v6.2, v6.1.12, v6.1.11, v6.1.10 |
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#
121d340b |
| 02-Feb-2023 |
Benjamin Gray <bgray@linux.ibm.com> |
selftests/powerpc: Add read/write debugfs file, int
Debugfs files are not always integers, so make *_file return/write a byte buffer, and *_int deal with int values specifically. This increases cons
selftests/powerpc: Add read/write debugfs file, int
Debugfs files are not always integers, so make *_file return/write a byte buffer, and *_int deal with int values specifically. This increases consistency with the other file read/write helpers.
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20230203003947.38033-3-bgray@linux.ibm.com
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Revision tags: v6.1.9, v6.1.8, v6.1.7, v6.1.6, v6.1.5, v6.0.19, v6.0.18, v6.1.4, v6.1.3, v6.0.17, v6.1.2, v6.0.16, v6.1.1, v6.0.15, v6.0.14, v6.0.13, v6.1, v6.0.12, v6.0.11, v6.0.10, v5.15.80, v6.0.9, v5.15.79, v6.0.8, v5.15.78, v6.0.7, v5.15.77, v5.15.76, v6.0.6, v6.0.5, v5.15.75, v6.0.4, v6.0.3, v6.0.2, v5.15.74, v5.15.73, v6.0.1, v5.15.72, v6.0, v5.15.71, v5.15.70, v5.15.69, v5.15.68, v5.15.67, v5.15.66, v5.15.65, v5.15.64, v5.15.63, v5.15.62, v5.15.61, v5.15.60, v5.15.59, v5.19, v5.15.58, v5.15.57, v5.15.56, v5.15.55, v5.15.54, v5.15.53, v5.15.52, v5.15.51, v5.15.50, v5.15.49, v5.15.48, v5.15.47, v5.15.46, v5.15.45, v5.15.44, v5.15.43, v5.15.42, v5.18, v5.15.41, v5.15.40, v5.15.39, v5.15.38, v5.15.37, v5.15.36, v5.15.35, v5.15.34, v5.15.33, v5.15.32, v5.15.31, v5.17, v5.15.30, v5.15.29, v5.15.28, v5.15.27, v5.15.26, v5.15.25, v5.15.24, v5.15.23, v5.15.22, v5.15.21, v5.15.20, v5.15.19, v5.15.18, v5.15.17, v5.4.173, v5.15.16, v5.15.15, v5.16, v5.15.10, v5.15.9, v5.15.8, v5.15.7, v5.15.6, v5.15.5, v5.15.4, v5.15.3, v5.15.2, v5.15.1, v5.15, v5.14.14, v5.14.13, v5.14.12, v5.14.11, v5.14.10, v5.14.9, v5.14.8, v5.14.7, v5.14.6, v5.10.67, v5.10.66, v5.14.5, v5.14.4, v5.10.65, v5.14.3, v5.10.64, v5.14.2, v5.10.63, v5.14.1, v5.10.62, v5.14, v5.10.61, v5.10.60, v5.10.53, v5.10.52, v5.10.51, v5.10.50, v5.10.49, v5.13, v5.10.46, v5.10.43, v5.10.42, v5.10.41, v5.10.40, v5.10.39, v5.4.119, v5.10.36, v5.10.35, v5.10.34, v5.4.116, v5.10.33, v5.12, v5.10.32, v5.10.31, v5.10.30, v5.10.27, v5.10.26, v5.10.25, v5.10.24, v5.10.23, v5.10.22, v5.10.21, v5.10.20, v5.10.19, v5.4.101, v5.10.18 |
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3a72c94e |
| 23-Feb-2021 |
Russell Currey <ruscur@russell.cc> |
selftests/powerpc: Fix L1D flushing tests for Power10
The rfi_flush and entry_flush selftests work by using the PM_LD_MISS_L1 perf event to count L1D misses. The value of this event has changed ove
selftests/powerpc: Fix L1D flushing tests for Power10
The rfi_flush and entry_flush selftests work by using the PM_LD_MISS_L1 perf event to count L1D misses. The value of this event has changed over time:
- Power7 uses 0x400f0 - Power8 and Power9 use both 0x400f0 and 0x3e054 - Power10 uses only 0x3e054
Rather than relying on raw values, configure perf to count L1D read misses in the most explicit way available.
This fixes the selftests to work on systems without 0x400f0 as PM_LD_MISS_L1, and should change no behaviour for systems that the tests already worked on.
The only potential downside is that referring to a specific perf event requires PMU support implemented in the kernel for that platform.
Signed-off-by: Russell Currey <ruscur@russell.cc> Acked-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210223070227.2916871-1-ruscur@russell.cc
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#
b9f9313c |
| 23-Feb-2021 |
Russell Currey <ruscur@russell.cc> |
selftests/powerpc: Fix L1D flushing tests for Power10
[ Upstream commit 3a72c94ebfb1f171eba0715998010678a09ec796 ]
The rfi_flush and entry_flush selftests work by using the PM_LD_MISS_L1 perf event
selftests/powerpc: Fix L1D flushing tests for Power10
[ Upstream commit 3a72c94ebfb1f171eba0715998010678a09ec796 ]
The rfi_flush and entry_flush selftests work by using the PM_LD_MISS_L1 perf event to count L1D misses. The value of this event has changed over time:
- Power7 uses 0x400f0 - Power8 and Power9 use both 0x400f0 and 0x3e054 - Power10 uses only 0x3e054
Rather than relying on raw values, configure perf to count L1D read misses in the most explicit way available.
This fixes the selftests to work on systems without 0x400f0 as PM_LD_MISS_L1, and should change no behaviour for systems that the tests already worked on.
The only potential downside is that referring to a specific perf event requires PMU support implemented in the kernel for that platform.
Signed-off-by: Russell Currey <ruscur@russell.cc> Acked-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210223070227.2916871-1-ruscur@russell.cc Signed-off-by: Sasha Levin <sashal@kernel.org>
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Revision tags: v5.10.17, v5.11, v5.10.16, v5.10.15, v5.10.14, v5.10 |
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#
0d239f3b |
| 16-Nov-2020 |
Daniel Axtens <dja@axtens.net> |
selftests/powerpc: refactor entry and rfi_flush tests
For simplicity in backporting, the original entry_flush test contained a lot of duplicated code from the rfi_flush test. De-duplicate that code.
selftests/powerpc: refactor entry and rfi_flush tests
For simplicity in backporting, the original entry_flush test contained a lot of duplicated code from the rfi_flush test. De-duplicate that code.
Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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89a83a0c |
| 16-Nov-2020 |
Daniel Axtens <dja@axtens.net> |
selftests/powerpc: entry flush test
Add a test modelled on the RFI flush test which counts the number of L1D misses doing a simple syscall with the entry flush on and off.
For simplicity of backpor
selftests/powerpc: entry flush test
Add a test modelled on the RFI flush test which counts the number of L1D misses doing a simple syscall with the entry flush on and off.
For simplicity of backporting, this test duplicates a lot of code from rfi_flush. We clean that up in the next patch.
Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
b9f9313c |
| 23-Feb-2021 |
Russell Currey <ruscur@russell.cc> |
selftests/powerpc: Fix L1D flushing tests for Power10 [ Upstream commit 3a72c94ebfb1f171eba0715998010678a09ec796 ] The rfi_flush and entry_flush selftests work by using the PM_LD_MI
selftests/powerpc: Fix L1D flushing tests for Power10 [ Upstream commit 3a72c94ebfb1f171eba0715998010678a09ec796 ] The rfi_flush and entry_flush selftests work by using the PM_LD_MISS_L1 perf event to count L1D misses. The value of this event has changed over time: - Power7 uses 0x400f0 - Power8 and Power9 use both 0x400f0 and 0x3e054 - Power10 uses only 0x3e054 Rather than relying on raw values, configure perf to count L1D read misses in the most explicit way available. This fixes the selftests to work on systems without 0x400f0 as PM_LD_MISS_L1, and should change no behaviour for systems that the tests already worked on. The only potential downside is that referring to a specific perf event requires PMU support implemented in the kernel for that platform. Signed-off-by: Russell Currey <ruscur@russell.cc> Acked-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210223070227.2916871-1-ruscur@russell.cc Signed-off-by: Sasha Levin <sashal@kernel.org>
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Revision tags: v5.10.17, v5.11, v5.10.16, v5.10.15, v5.10.14, v5.10 |
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#
0d239f3b |
| 16-Nov-2020 |
Daniel Axtens <dja@axtens.net> |
selftests/powerpc: refactor entry and rfi_flush tests For simplicity in backporting, the original entry_flush test contained a lot of duplicated code from the rfi_flush test. De-duplicat
selftests/powerpc: refactor entry and rfi_flush tests For simplicity in backporting, the original entry_flush test contained a lot of duplicated code from the rfi_flush test. De-duplicate that code. Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
show more ...
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#
89a83a0c |
| 16-Nov-2020 |
Daniel Axtens <dja@axtens.net> |
selftests/powerpc: entry flush test Add a test modelled on the RFI flush test which counts the number of L1D misses doing a simple syscall with the entry flush on and off. For s
selftests/powerpc: entry flush test Add a test modelled on the RFI flush test which counts the number of L1D misses doing a simple syscall with the entry flush on and off. For simplicity of backporting, this test duplicates a lot of code from rfi_flush. We clean that up in the next patch. Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
show more ...
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