tests/acceptance: add a new tests to detect counting errors
The insn plugin has a simple heuristic to detect if an instruction is detected running twice in a row. Check the plugin log after the run and pass accordingly. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Wainer dos Santos Moschetta <wainersm@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20210213130325.14781-22-alex.bennee@linaro.org>
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@ -89,3 +89,29 @@ class PluginKernelNormal(PluginKernelBase):
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m = re.search(br"insns: (?P<count>\d+)", s)
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m = re.search(br"insns: (?P<count>\d+)", s)
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if "count" not in m.groupdict():
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if "count" not in m.groupdict():
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self.fail("Failed to find instruction count")
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self.fail("Failed to find instruction count")
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def test_aarch64_virt_insn_icount(self):
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"""
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:avocado: tags=accel:tcg
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:avocado: tags=arch:aarch64
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:avocado: tags=machine:virt
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:avocado: tags=cpu:cortex-a57
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"""
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kernel_path = self._grab_aarch64_kernel()
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kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
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'console=ttyAMA0')
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console_pattern = 'Kernel panic - not syncing: VFS:'
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plugin_log = tempfile.NamedTemporaryFile(mode="r+t", prefix="plugin",
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suffix=".log")
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self.run_vm(kernel_path, kernel_command_line,
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"tests/plugin/libinsn.so", plugin_log.name,
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console_pattern,
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args=('-cpu', 'cortex-a53', '-icount', 'shift=1'))
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with plugin_log as lf, \
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mmap.mmap(lf.fileno(), 0, access=mmap.ACCESS_READ) as s:
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m = re.search(br"detected repeat execution @ (?P<addr>0x[0-9A-Fa-f]+)", s)
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if m is not None and "addr" in m.groupdict():
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self.fail("detected repeated instructions")
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