mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-09-11 14:54:47 -04:00
Add a CoreSight shell test for synthesized callchains.
The test uses the new callchain workload to generate trace and decodes
it with synthesis callchain. It then verifies that the instruction
samples show the expected callchain push and pop.
Use control FIFOs so tracing starts only around the workload, which
keeps the trace data small. The test is limited to with the cs_etm
event available and root permission.
After:
perf test 138 -vvv
138: CoreSight synthesized callchain:
---- start ----
test child forked, pid 35581
Callchain flow matched:
l1=4642868 l2=4642880 l3=4642895 l4=4642919 l5=4670494 l6=4670500 l7=4670520
---- end(0) ----
138: CoreSight synthesized callchain : Ok
Assisted-by: Codex:GPT-5.5
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
261 lines
6.5 KiB
C
261 lines
6.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef TESTS_H
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#define TESTS_H
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#include <stdbool.h>
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#include "util/debug.h"
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enum {
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TEST_OK = 0,
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TEST_FAIL = -1,
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TEST_SKIP = -2,
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};
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#define TEST_ASSERT_VAL(text, cond) \
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do { \
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if (!(cond)) { \
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pr_debug("FAILED %s:%d %s\n", __FILE__, __LINE__, text); \
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return TEST_FAIL; \
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} \
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} while (0)
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#define TEST_ASSERT_EQUAL(text, val, expected) \
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do { \
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if (val != expected) { \
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pr_debug("FAILED %s:%d %s (%d != %d)\n", \
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__FILE__, __LINE__, text, val, expected); \
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return TEST_FAIL; \
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} \
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} while (0)
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struct test_suite;
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typedef int (*test_fnptr)(struct test_suite *, int);
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struct test_case {
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const char *name;
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const char *desc;
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const char *skip_reason;
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test_fnptr run_case;
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bool exclusive;
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void *priv;
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};
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struct test_suite {
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const char *desc;
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struct test_case *test_cases;
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void *priv;
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int (*setup)(struct test_suite *suite);
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};
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#define DECLARE_SUITE(name) \
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extern struct test_suite suite__##name;
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#define TEST_CASE(description, _name) \
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{ \
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.name = #_name, \
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.desc = description, \
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.run_case = test__##_name, \
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}
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#define TEST_CASE_REASON(description, _name, _reason) \
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{ \
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.name = #_name, \
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.desc = description, \
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.run_case = test__##_name, \
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.skip_reason = _reason, \
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}
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#define TEST_CASE_EXCLUSIVE(description, _name) \
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{ \
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.name = #_name, \
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.desc = description, \
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.run_case = test__##_name, \
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.exclusive = true, \
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}
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#define TEST_CASE_REASON_EXCLUSIVE(description, _name, _reason) \
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{ \
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.name = #_name, \
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.desc = description, \
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.run_case = test__##_name, \
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.skip_reason = _reason, \
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.exclusive = true, \
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}
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#define DEFINE_SUITE(description, _name) \
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struct test_case tests__##_name[] = { \
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TEST_CASE(description, _name), \
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{ .name = NULL, } \
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}; \
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struct test_suite suite__##_name = { \
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.desc = description, \
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.test_cases = tests__##_name, \
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}
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#define DEFINE_SUITE_EXCLUSIVE(description, _name) \
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struct test_case tests__##_name[] = { \
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TEST_CASE_EXCLUSIVE(description, _name),\
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{ .name = NULL, } \
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}; \
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struct test_suite suite__##_name = { \
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.desc = description, \
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.test_cases = tests__##_name, \
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}
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/* Tests */
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DECLARE_SUITE(vmlinux_matches_kallsyms);
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DECLARE_SUITE(openat_syscall_event);
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DECLARE_SUITE(openat_syscall_event_on_all_cpus);
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DECLARE_SUITE(basic_mmap);
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DECLARE_SUITE(PERF_RECORD);
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DECLARE_SUITE(perf_evsel__roundtrip_name_test);
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DECLARE_SUITE(perf_evsel__tp_sched_test);
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DECLARE_SUITE(syscall_openat_tp_fields);
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DECLARE_SUITE(pmu);
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DECLARE_SUITE(pmu_events);
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DECLARE_SUITE(hwmon_pmu);
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DECLARE_SUITE(tool_pmu);
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DECLARE_SUITE(attr);
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DECLARE_SUITE(dso_data);
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DECLARE_SUITE(dso_data_cache);
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DECLARE_SUITE(dso_data_reopen);
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DECLARE_SUITE(parse_events);
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DECLARE_SUITE(hists_link);
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DECLARE_SUITE(bp_signal);
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DECLARE_SUITE(bp_signal_overflow);
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DECLARE_SUITE(bp_accounting);
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DECLARE_SUITE(wp);
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DECLARE_SUITE(task_exit);
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DECLARE_SUITE(mem);
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DECLARE_SUITE(sw_clock_freq);
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DECLARE_SUITE(code_reading);
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DECLARE_SUITE(sample_parsing);
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DECLARE_SUITE(keep_tracking);
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DECLARE_SUITE(parse_no_sample_id_all);
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DECLARE_SUITE(dwarf_unwind);
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DECLARE_SUITE(expr);
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DECLARE_SUITE(hists_filter);
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DECLARE_SUITE(mmap_thread_lookup);
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DECLARE_SUITE(thread_maps_share);
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DECLARE_SUITE(hists_output);
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DECLARE_SUITE(hists_cumulate);
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DECLARE_SUITE(switch_tracking);
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DECLARE_SUITE(fdarray__filter);
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DECLARE_SUITE(fdarray__add);
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DECLARE_SUITE(kmod_path__parse);
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DECLARE_SUITE(thread_map);
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DECLARE_SUITE(bpf);
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DECLARE_SUITE(session_topology);
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DECLARE_SUITE(thread_map_synthesize);
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DECLARE_SUITE(thread_map_remove);
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DECLARE_SUITE(cpu_map);
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DECLARE_SUITE(synthesize_stat_config);
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DECLARE_SUITE(synthesize_stat);
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DECLARE_SUITE(synthesize_stat_round);
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DECLARE_SUITE(event_update);
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DECLARE_SUITE(event_times);
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DECLARE_SUITE(backward_ring_buffer);
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DECLARE_SUITE(sdt_event);
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DECLARE_SUITE(is_printable_array);
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DECLARE_SUITE(bitmap_print);
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DECLARE_SUITE(perf_hooks);
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DECLARE_SUITE(unit_number__scnprint);
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DECLARE_SUITE(mem2node);
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DECLARE_SUITE(maps);
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DECLARE_SUITE(time_utils);
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DECLARE_SUITE(jit_write_elf);
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DECLARE_SUITE(api_io);
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DECLARE_SUITE(demangle_java);
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DECLARE_SUITE(demangle_ocaml);
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DECLARE_SUITE(demangle_rust);
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DECLARE_SUITE(pfm);
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DECLARE_SUITE(parse_metric);
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DECLARE_SUITE(pe_file_parsing);
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DECLARE_SUITE(expand_cgroup_events);
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DECLARE_SUITE(perf_time_to_tsc);
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DECLARE_SUITE(dlfilter);
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DECLARE_SUITE(sigtrap);
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DECLARE_SUITE(event_groups);
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DECLARE_SUITE(symbols);
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DECLARE_SUITE(util);
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DECLARE_SUITE(uncore_event_sorting);
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DECLARE_SUITE(subcmd_help);
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DECLARE_SUITE(kallsyms_split);
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/*
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* PowerPC and S390 do not support creation of instruction breakpoints using the
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* perf_event interface.
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*
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* ARM requires explicit rounding down of the instruction pointer in Thumb mode,
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* and then requires the single-step to be handled explicitly in the overflow
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* handler to avoid stepping into the SIGIO handler and getting stuck on the
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* breakpointed instruction.
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*
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* Since arm64 has the same issue with arm for the single-step handling, this
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* case also gets stuck on the breakpointed instruction.
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*
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* Just disable the test for these architectures until these issues are
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* resolved.
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*/
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#if defined(__powerpc__) || defined(__s390x__) || defined(__arm__) || defined(__aarch64__)
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#define BP_SIGNAL_IS_SUPPORTED 0
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#else
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#define BP_SIGNAL_IS_SUPPORTED 1
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#endif
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#ifdef HAVE_DWARF_UNWIND_SUPPORT
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struct thread;
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struct perf_sample;
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int test__arch_unwind_sample(struct perf_sample *sample,
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struct thread *thread);
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#endif
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#if defined(__arm__)
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DECLARE_SUITE(vectors_page);
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#endif
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/*
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* Define test workloads to be used in test suites.
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*/
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typedef int (*workload_fnptr)(int argc, const char **argv);
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struct test_workload {
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const char *name;
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workload_fnptr func;
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};
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#define DECLARE_WORKLOAD(work) \
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extern struct test_workload workload__##work
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#define DEFINE_WORKLOAD(work) \
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struct test_workload workload__##work = { \
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.name = #work, \
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.func = work, \
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}
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/* The list of test workloads */
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DECLARE_WORKLOAD(noploop);
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DECLARE_WORKLOAD(thloop);
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DECLARE_WORKLOAD(named_threads);
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DECLARE_WORKLOAD(leafloop);
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DECLARE_WORKLOAD(sqrtloop);
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DECLARE_WORKLOAD(brstack);
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DECLARE_WORKLOAD(datasym);
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DECLARE_WORKLOAD(landlock);
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DECLARE_WORKLOAD(traploop);
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DECLARE_WORKLOAD(inlineloop);
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DECLARE_WORKLOAD(jitdump);
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DECLARE_WORKLOAD(context_switch_loop);
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DECLARE_WORKLOAD(deterministic);
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DECLARE_WORKLOAD(callchain);
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#ifdef HAVE_RUST_SUPPORT
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DECLARE_WORKLOAD(code_with_type);
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#endif
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extern const char *dso_to_test;
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extern const char *test_objdump_path;
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#endif /* TESTS_H */
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