| 5c20de57 | 03-Feb-2023 |
Benjamin Gray <bgray@linux.ibm.com> |
selftests/powerpc: Add {read,write}_{long,ulong}
Add helper functions to read and write (unsigned) long values directly
from/to files. One of the kernel interfaces uses hex strings, so we need
to al
selftests/powerpc: Add {read,write}_{long,ulong}
Add helper functions to read and write (unsigned) long values directly
from/to files. One of the kernel interfaces uses hex strings, so we need
to allow passing a base too.
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230203003947.38033-5-bgray@linux.ibm.com
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| d1bc05b7 | 03-Feb-2023 |
Benjamin Gray <bgray@linux.ibm.com> |
selftests/powerpc: Parse long/unsigned long value safely
Often a file is expected to hold an integral value. Existing functions
will use a C stdlib function like atoi or strtol to parse the file.
Th
selftests/powerpc: Parse long/unsigned long value safely
Often a file is expected to hold an integral value. Existing functions
will use a C stdlib function like atoi or strtol to parse the file.
These operations are error prone, with complicated error conditions
(atoi returns 0 if not a number, and is undefined behaviour if not in
range. strtol returns 0 if not a number, and LONG_MIN/MAX if not in
range + sets errno to ERANGE).
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230203003947.38033-4-bgray@linux.ibm.com
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| 121d340b | 03-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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| 611e3850 | 27-Jun-2022 |
Michael Ellerman <mpe@ellerman.id.au> |
selftests/powerpc/ptrace: Do more of ptrace-gpr in asm
The ptrace-gpr test includes some inline asm to load GPR and FPR
registers. It then goes back to C to wait for the parent to trace it and
then
selftests/powerpc/ptrace: Do more of ptrace-gpr in asm
The ptrace-gpr test includes some inline asm to load GPR and FPR
registers. It then goes back to C to wait for the parent to trace it and
then checks register contents.
The split between inline asm and C is fragile, it relies on the compiler
not using any non-volatile GPRs after the inline asm block. It also
requires a very large and unwieldy inline asm block.
So convert the logic to set registers, wait, and store registers to a
single asm function, meaning there's no window for the compiler to
intervene.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-10-mpe@ellerman.id.au
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| 53fa86e7 | 27-Jun-2022 |
Michael Ellerman <mpe@ellerman.id.au> |
selftests/powerpc/ptrace: Convert to load/store doubles
Some of the ptrace tests check the contents of floating pointer
registers. Currently these use float, which is always 4 bytes, but the
ptrace
selftests/powerpc/ptrace: Convert to load/store doubles
Some of the ptrace tests check the contents of floating pointer
registers. Currently these use float, which is always 4 bytes, but the
ptrace API supports saving/restoring 8 bytes per register, so switch to
using doubles to exercise the code more fully.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-8-mpe@ellerman.id.au
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| af9f3f31 | 27-Jun-2022 |
Michael Ellerman <mpe@ellerman.id.au> |
selftests/powerpc/ptrace: Drop unused load_fpr_single_precision()
This function is never called, drop it.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/202206
selftests/powerpc/ptrace: Drop unused load_fpr_single_precision()
This function is never called, drop it.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-7-mpe@ellerman.id.au
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| bd4d3042 | 27-Jun-2022 |
Michael Ellerman <mpe@ellerman.id.au> |
selftests/powerpc: Add 32-bit support to asm helpers
Add support for 32-bit builds to the asm helpers.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/202206271
selftests/powerpc: Add 32-bit support to asm helpers
Add support for 32-bit builds to the asm helpers.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-6-mpe@ellerman.id.au
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| cfbc0723 | 27-Jun-2022 |
Michael Ellerman <mpe@ellerman.id.au> |
selftests/powerpc: Don't save TOC by default in asm helpers
Thare are some asm helpers for creating/popping stack frames in
basic_asm.h. They always save/restore r2 (TOC pointer), but none of the
se
selftests/powerpc: Don't save TOC by default in asm helpers
Thare are some asm helpers for creating/popping stack frames in
basic_asm.h. They always save/restore r2 (TOC pointer), but none of the
selftests change r2, so it's unnecessary to save it by default.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-5-mpe@ellerman.id.au
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| 8f2e0239 | 27-Jun-2022 |
Michael Ellerman <mpe@ellerman.id.au> |
selftests/powerpc: Don't save CR by default in asm helpers
Thare are some asm helpers for creating/popping stack frames in
basic_asm.h. They always save/restore CR, but none of the selftests
tests t
selftests/powerpc: Don't save CR by default in asm helpers
Thare are some asm helpers for creating/popping stack frames in
basic_asm.h. They always save/restore CR, but none of the selftests
tests touch non-volatile CR fields, so it's unnecessary to save them by
default.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-4-mpe@ellerman.id.au
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| 9cfd110a | 10-Jun-2022 |
Athira Rajeev <atrajeev@linux.vnet.ibm.com> |
selftests/powerpc/pmu: Refactor the platform check and add macros to find array size/PVR
The platform check for selftest support "check_pvr_for_sampling_tests"
is specific to sampling tests which in
selftests/powerpc/pmu: Refactor the platform check and add macros to find array size/PVR
The platform check for selftest support "check_pvr_for_sampling_tests"
is specific to sampling tests which includes PVR check, presence of
PMU and extended regs support. Extended regs support is needed for
sampling tests which tests whether PMU registers are programmed
correctly. There could be other sampling tests which may not need
extended regs, example, bhrb filter tests which only needs validity
check via event open.
Hence refactor the platform check to have a common function
"platform_check_for_tests" that checks only for PVR check
and presence of PMU. The existing function
"check_pvr_for_sampling_tests" will invoke the common function
and also will include checks for extended regs specific for
sampling. The common function can also be used by tests other
than sampling like event code tests.
Add macro to find array size ("ARRAY_SIZE") to sampling
tests "misc.h" file. This can be used in next tests to
find event array size. Also update "include/reg.h" to
add macros to find minor and major version from PVR which
will be used in testcases.
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220610134113.62991-10-atrajeev@linux.vnet.ibm.com
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