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2023-04-20selftests/powerpc/dscr: Add lockstep test cases to DSCR explicit testsBenjamin Gray
Add new cases to the relevant tests that use explicitly synchronized threads to test the behaviour across context switches with less randomness. By locking the participants to the same CPU we guarantee a context switch occurs each time they make progress, which is a likely failure point if the kernel is not tracking the thread local DSCR correctly. The random case is left in to keep exercising potential edge cases. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230406043320.125138-5-bgray@linux.ibm.com
2023-04-20selftests/powerpc: Allow bind_to_cpu() to automatically pick CPUBenjamin Gray
All current users of bind_to_cpu() don't care _which_ CPU they get, just that they are bound to a single free one. So alter the interface to 1. Accept a BIND_CPU_ANY value that tells it to automatically pick a CPU 2. Return the picked CPU And convert all these users to bind_to_cpu(BIND_CPU_ANY). Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230406043320.125138-4-bgray@linux.ibm.com
2023-04-20selftests/powerpc: Move bind_to_cpu() to utils.hBenjamin Gray
This function will be useful in the DSCR test patches later in this series, so promote it to be shared by all powerpc selftests. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230406043320.125138-3-bgray@linux.ibm.com
2023-04-20selftests/powerpc/dscr: Correct typosBenjamin Gray
Correct a couple of typos while working on other improvements to the DSCR tests. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230406043320.125138-2-bgray@linux.ibm.com
2023-04-20powerpc: add CFUNC assembly label annotationNicholas Piggin
This macro is to be used in assembly where C functions are called. pcrel addressing mode requires branches to functions with a localentry value of 1 to have either a trailing nop or @notoc. This macro permits the latter without changing callers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Add dummy definitions to fix selftests build] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230408021752.862660-5-npiggin@gmail.com
2023-03-30selftests/powerpc: Make dd output quietBenjamin Gray
dd logs info to stderr by default. This info is pointless in the selftests and makes legitimate issues harder to spot. Pass the option to silence the info logs. Actual errors would still be printed. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230228000709.124727-4-bgray@linux.ibm.com
2023-03-30selftests/powerpc: Pass make context to childrenBenjamin Gray
Make supports passing the 'jobserver' (parallel make support) to child invocations of make when either 1. The target command uses $(MAKE) directly 2. The command starts with '+' This context is not passed through expansions that result in $(MAKE), so the macros used in several places fail to pass on the jobserver context. Warnings are also raised by the child mentioning this. Prepend macros lines that invoke $(MAKE) with '+' to allow passing the jobserver context to these children. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230228000709.124727-3-bgray@linux.ibm.com
2023-03-30selftests/powerpc: Use CLEAN macro to fix make warningBenjamin Gray
The CLEAN macro was added in 337f1e36 to prevent the Makefile:50: warning: overriding recipe for target 'clean' ../../lib.mk:124: warning: ignoring old recipe for target 'clean' style warnings. Expand it's use to fix another case of redefining a target directly. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230228000709.124727-2-bgray@linux.ibm.com
2023-03-15selftests/powerpc/pmu: Fix sample field check in the ↵Kajol Jain
mmcra_thresh_marked_sample_test The testcase verifies the setting of different fields in Monitor Mode Control Register A (MMCRA). In the current code, EV_CODE_EXTRACT macro is used to extract the "sample" field, which then needs to be further processed to fetch rand_samp_elig and rand_samp_mode bits. But the current code is not passing valid sample field to EV_CODE_EXTRACT macro. Patch addresses this by fixing the input for EV_CODE_EXTRACT. Fixes: 29cf373c5766 ("selftests/powerpc/pmu: Add interface test for mmcra register fields") Reported-by: David Binderman <dcb314@hotmail.com> Link: https://lore.kernel.org/r/DB6P189MB0568CF002762C6C43AF6DF169CA89@DB6P189MB0568.EURP189.PROD.OUTLOOK.COM Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230301170918.69176-1-kjain@linux.ibm.com
2023-03-15selftests/powerpc: Increase timeout for vsx_signal testMichael Neuling
On the max config P10 machine (1920 threads and 64TB) this test fails with a timeout: Sending signals to all threads 10 times...!! killing vmx_signal !! child died by signal 15 failure: vmx_signal The default timeout is 120sec so increase this 3x to 360sec. With this change the test passes on these large machines. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230307213614.2652059-1-mikey@neuling.org
2023-02-15selftests/powerpc: Fix incorrect kernel headers search pathMathieu Desnoyers
Use $(KHDR_INCLUDES) as lookup path for kernel headers. This prevents building against kernel headers from the build environment in scenarios where kernel headers are installed into a specific output directory (O=...). Cc: stable@vger.kernel.org # v5.18+ Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20230127135755.79929-22-mathieu.desnoyers@efficios.com
2023-02-09selftests/powerpc: Add automatically allocating read_fileBenjamin Gray
A couple of tests roll their own auto-allocating file read logic. Add a generic implementation and convert them to use it. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20230203003947.38033-6-bgray@linux.ibm.com
2023-02-09selftests/powerpc: Add {read,write}_{long,ulong}Benjamin Gray
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
2023-02-09selftests/powerpc: Parse long/unsigned long value safelyBenjamin Gray
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
2023-02-09selftests/powerpc: Add read/write debugfs file, intBenjamin Gray
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
2023-02-09selftests/powerpc: Add generic read/write file utilBenjamin Gray
File read/write is reimplemented in about 5 different ways in the various PowerPC selftests. This indicates it should be a common util. Add a common read_file / write_file implementation and convert users to it where (easily) possible. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20230203003947.38033-2-bgray@linux.ibm.com
2022-12-05selftests/powerpc: Fix resource leaksMiaoqian Lin
In check_all_cpu_dscr_defaults, opendir() opens the directory stream. Add missing closedir() in the error path to release it. In check_cpu_dscr_default, open() creates an open file descriptor. Add missing close() in the error path to release it. Fixes: ebd5858c904b ("selftests/powerpc: Add test for all DSCR sysfs interfaces") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221205084429.570654-1-linmq006@gmail.com
2022-12-02selftests/powerpc: Add ptrace setup_core_pattern() null-terminatorBenjamin Gray
- malloc() does not zero the buffer, - fread() does not null-terminate it's output, - `cat /proc/sys/kernel/core_pattern | hexdump -C` shows the file is not inherently null-terminated So using string operations on the buffer is risky. Explicitly add a null character to the end to make it safer. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221128041948.58339-3-bgray@linux.ibm.com
2022-12-02selftests/powerpc: Use mfspr/mtspr macrosBenjamin Gray
No need to write inline asm for mtspr/mfspr, we have macros for this in reg.h 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/20221128041948.58339-2-bgray@linux.ibm.com
2022-12-02selftests: powerpc: Use "grep -E" instead of "egrep"Tiezhu Yang
The latest version of grep claims the egrep is now obsolete so the build now contains warnings that look like: egrep: warning: egrep is obsolescent; using grep -E fix this using "grep -E" instead. sed -i "s/egrep/grep -E/g" `grep egrep -rwl tools/testing/selftests/powerpc` Here are the steps to install the latest grep: wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz tar xf grep-3.8.tar.gz cd grep-3.8 && ./configure && make sudo make install export PATH=/usr/local/bin:$PATH Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1669862997-31335-1-git-send-email-yangtiezhu@loongson.cn
2022-11-30selftests/powerpc: Account for offline cpus in perf-hwbreak testNaveen N. Rao
For systemwide tests, use online cpu mask to only open events on online cpus. This enables this test to work on systems in lower SMT modes. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/15fd447dcefd19945a7d31f0a475349f548a3603.1669096083.git.naveen.n.rao@linux.vnet.ibm.com
2022-11-30selftests/powerpc: Bump up rlimit for perf-hwbreak testNaveen N. Rao
The systemwide perf hardware breakpoint test tries to open a perf event on each cpu. On large systems, we run out of file descriptors and fail the test. Instead, have the test set the file descriptor limit to an arbitraty high value. Reported-by: Rohan Deshpande <rohan_d@linux.vnet.ibm.com> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/187fed5843cecc1e5066677b6296ee88337d7bef.1669096083.git.naveen.n.rao@linux.vnet.ibm.com
2022-11-30selftests/powerpc: Move perror closer to its useNaveen N. Rao
Right now, if perf_event_open() fails for the systemwide tests, error report is printed too late, sometimes after subsequent system calls. Move use of perror() to the main function, just after the syscall. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/372ac78c27899f1f612fbd6ac796604a4a9310aa.1669096083.git.naveen.n.rao@linux.vnet.ibm.com
2022-11-24selftests/powerpc: Remove repeated word in commentsShaomin Deng
Remove the repeated word "not" in comments. Signed-off-by: Shaomin Deng <dengshaomin@cdjrlc.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221029094643.5595-1-dengshaomin@cdjrlc.com
2022-11-24selftests/powerpc: Fix spelling mistake "mmaping" -> "mmapping"Colin Ian King
There is a spelling mistake in a perror message. Fix it. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221021084545.65973-1-colin.i.king@gmail.com
2022-09-28selftests/powerpc: Update bhrb filter sampling test for multiple branch filtersAthira Rajeev
For PERF_SAMPLE_BRANCH_STACK sample type, different branch_sample_type, ie branch filters are supported. The testcase "bhrb_filter_map_test" tests the valid and invalid filter maps in different powerpc platforms. Update this testcase to include scenario to cover multiple branch filters at sametime. Since powerpc doesn't support multiple filters at sametime, expect failure during perf_event_open. Reported-by: Disha Goel <disgoel@linux.vnet.ibm.com> Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Reviewed-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220921145255.20972-3-atrajeev@linux.vnet.ibm.com
2022-09-04selftests/powerpc: Skip 4PB test on 4K PAGE_SIZE systemsMichael Ellerman
Systems using the hash MMU with a 4K page size don't support 4PB address space, so skip the test because the bug it tests for can't be triggered. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220901020215.254097-1-mpe@ellerman.id.au
2022-08-26selftests/powerpc: Add a test for execute-only memoryNicholas Miehlbradt
This selftest is designed to cover execute-only protections on the Radix MMU but will also work with Hash. The tests are based on those found in pkey_exec_test with modifications to use the generic mprotect() instead of the pkey variants. Signed-off-by: Nicholas Miehlbradt <nicholas@linux.ibm.com> Signed-off-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220817050640.406017-2-ruscur@russell.cc
2022-08-22powerpc/selftests: Use timersub() for gettimeofday()ye xingchen
Use timersub() function to simplify the code. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220816105106.82666-1-ye.xingchen@zte.com.cn
2022-08-15selftests/powerpc: Add missing PMU selftests to .gitignoresRussell Currey
Some recently added selftests don't have their binaries in .gitignores, so add them. I also alphabetically sorted sampling_tests/.gitignore while I was in there. Signed-off-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220812071632.56095-1-ruscur@russell.cc
2022-08-01selftests/powerpc: Avoid GCC 12 uninitialised variable warningMichael Ellerman
GCC 12 thinks that `actual` might be used uninitialised. It's not, the use is guarded by `bad_mmcr2` which is only set to true at the same point where `actual` is initialised. cycles_with_mmcr2_test.c: In function ‘cycles_with_mmcr2’: cycles_with_mmcr2_test.c:81:17: error: ‘actual’ may be used uninitialized [-Werror=maybe-uninitialized] 81 | printf("Bad MMCR2 value seen is 0x%lx\n", actual); Silence the warning by initialising `actual` to zero. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220801113746.802046-1-mpe@ellerman.id.au
2022-07-28selftests/powerpc: Fix matrix multiply assist testRashmica Gupta
The ISA states: "when ACC[i] contains defined data, the contents of VSRs 4×i to 4×i+3 are undefined until either a VSX Move From ACC instruction is used to copy the contents of ACC[i] to VSRs 4×i to 4×i+3 or some other instruction directly writes to one of these VSRs." We aren't doing this. This test only works on Power10 because the hardware implementation happens to map ACC0 to VSRs 0-3, but will fail on any other implementation that doesn't do this. So add xxmfacc between writing to the accumulator and accessing the VSRs. Fixes: 3527e1ab9a79 ("selftests/powerpc: Add matrix multiply assist (MMA) test") Signed-off-by: Rashmica Gupta <rashmica@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220617043935.428083-1-rashmica@linux.ibm.com
2022-07-25selftests/powerpc/ptrace: Add peek/poke of FPRsMichael Ellerman
Currently the ptrace-gpr test only tests the GET/SET(FP)REGS ptrace APIs. But there's an alternate (older) API, called PEEK/POKEUSR. Add some minimal testing of PEEK/POKEUSR of the FPRs. This is sufficient to detect the bug that was fixed recently in the 32-bit ptrace FPR handling. Depends-on: 8e1278444446 ("powerpc/32: Fix overread/overwrite of thread_struct via ptrace") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-13-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Use more interesting valuesMichael Ellerman
The ptrace-gpr test uses fixed values to test that registers can be read/written via ptrace. In particular it sets all GPRs to 1, which means the test could miss some types of bugs - eg. if the kernel was only returning the low word. So generate some random values at startup and use those instead. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-12-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Make child errors more obviousMichael Ellerman
Use the FAIL_IF() macro so that errors in the child report a line number, rather than just silently exiting. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-11-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Do more of ptrace-gpr in asmMichael Ellerman
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
2022-07-25selftests/powerpc/ptrace: Build the ptrace-gpr test as 32-bit when possibleMichael Ellerman
The ptrace-gpr test can now be built 32-bit, so do that if that's the compiler default rather than forcing a 64-bit build. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-9-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Convert to load/store doublesMichael Ellerman
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
2022-07-25selftests/powerpc/ptrace: Drop unused load_fpr_single_precision()Michael Ellerman
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
2022-07-25selftests/powerpc: Add 32-bit support to asm helpersMichael Ellerman
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
2022-07-25selftests/powerpc: Don't save TOC by default in asm helpersMichael Ellerman
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
2022-07-25selftests/powerpc: Don't save CR by default in asm helpersMichael Ellerman
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
2022-07-25selftests/powerpc/ptrace: Split CFLAGS betterMichael Ellerman
Currently all ptrace tests are built 64-bit and with TM enabled. Only the TM tests need TM enabled, so split those out into a separate variable so that can be specified precisely. Split the rest of the tests into a variable, and add -m64 to CFLAGS for those tests, so that in a subsequent patch some tests can be made to build 32-bit. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-3-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Set LOCAL_HDRSMichael Ellerman
Set LOCAL_HDRS so header changes cause rebuilds. The lib.mk logic adds all the headers in LOCAL_HDRS as dependencies, so there's no need to also list them explicitly. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-2-mpe@ellerman.id.au
2022-07-25selftests/powerpc: Ensure 16-byte stack pointer alignmentMichael Ellerman
The PUSH/POP_BASIC_STACK helpers in basic_asm.h do not ensure that the stack pointer is always 16-byte aligned, which is required per the ABI. Fix the macros to do the alignment if the caller fails to. Currently only one caller passes a non-aligned size, tm_signal_self(), which hasn't been caught in testing, presumably because it's a leaf function. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-1-mpe@ellerman.id.au
2022-06-29selftests/powerpc: Add missing files to .gitignoresMichael Ellerman
These were missed when the respective tests were added, add them now. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220616070705.1941829-1-mpe@ellerman.id.au
2022-06-29selftests/powerpc/pmu: Add test for hardware cache eventsKajol Jain
The testcase checks if the transalation of a generic hardware cache event is done properly via perf interface. The hardware cache events has type as PERF_TYPE_HW_CACHE and each event points to raw event code id. Testcase checks different combination of cache level, cache event operation type and cache event result type and verify for a given event code, whether transalation matches with the current cache event mappings via perf interface. Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220610134113.62991-36-atrajeev@linux.vnet.ibm.com
2022-06-29selftests/powerpc/pmu: Add selftest for group constraint check for MMCRA ↵Kajol Jain
thresh_sel field Thresh select bits in the event code is used to program thresh_sel field in Monitor Mode Control Register A (MMCRA: 45-47). When scheduling events as a group, all events in that group should match value in these bits. Otherwise event open for the sibling events will fail. Testcase uses event code PM_MRK_INST_CMPL (0x401e0) as leader and another event PM_THRESH_MET (0x101ec) as sibling event, and checks if group constraint checks for thresh_sel field added correctly via perf interface. Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220610134113.62991-35-atrajeev@linux.vnet.ibm.com
2022-06-29selftests/powerpc/pmu: Add selftest for group constraint check for MMCRA ↵Kajol Jain
thresh_ctl field Thresh control bits in the event code is used to program thresh_ctl field in Monitor Mode Control Register A (MMCRA: 48-55). When scheduling events as a group, all events in that group should match value in these bits. Otherwise event open for the sibling events will fail. Testcase uses event code PM_MRK_INST_CMPL (0x401e0) as leader and another event PM_THRESH_MET (101ec) as sibling event, and checks if group constraint checks for thresh_ctl field added correctly via perf interface. Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220610134113.62991-34-atrajeev@linux.vnet.ibm.com
2022-06-29selftests/powerpc/pmu: Add selftest for group constraint for unit and pmc ↵Kajol Jain
field in p9 Unit and pmu bits in the event code is used to program unit and pmc fields in Monitor Mode Control Register 1 (MMCR1). For power9 platform, incase unit field value is within 6 to 9, one of the event in the group should use PMC4. Otherwise event_open should fail for that group. Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220610134113.62991-33-atrajeev@linux.vnet.ibm.com
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