This runs the recording phase with a periodic auto-snapshot.
It also runs the machine for 5 seconds after creating the initial
address map, so as to alow time for a some auto snapshots to be
taken.
In the replay mode a reverse-debugging sequence is added where the
test is run to the end, and reverse-stepped from there. This should
load the last auto-snapshot taken.
The test hangs on x86-64 and aarch64 with autosnapshots, so it is
disabled for them.
Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
tests/avocado/reverse_debugging.py | 28 +++++++++++++++++++++++-----
1 file changed, 23 insertions(+), 5 deletions(-)
diff --git a/tests/avocado/reverse_debugging.py
b/tests/avocado/reverse_debugging.py
index 185f055cf9..36e5e1be05 100644
--- a/tests/avocado/reverse_debugging.py
+++ b/tests/avocado/reverse_debugging.py
@@ -41,6 +41,9 @@ class ReverseDebugging(LinuxKernelTest):
# first 10 instructions are stepped.
verify_end = True
+ # Enable the autosnapshot test, requires long_trace = True.
+ autosnapshot = True
+
# If first_step_workaround is true, check whether the first step moved
# icount, and if not then step again.
first_step_workaround = False
@@ -56,9 +59,14 @@ def run_vm(self, record, shift, args, replay_path,
image_path, port):
logger.info('replaying the execution...')
mode = 'replay'
vm.add_args('-gdb', 'tcp::%d' % port, '-S')
- vm.add_args('-icount', 'shift=%s,rr=%s,rrfile=%s,rrsnapshot=init' %
- (shift, mode, replay_path),
- '-net', 'none')
+ if self.autosnapshot:
+ vm.add_args('-icount', 'shift=%s,rr=%s,rrfile=%s,rrsnapshot=init'
+ ',rrsnapmode=periodic,rrsnapcount=10,'
+ 'rrsnaptime=1' % (shift, mode, replay_path))
+ else:
+ vm.add_args('-icount', 'shift=%s,rr=%s,rrfile=%s,rrsnapshot=init'
+ % (shift, mode, replay_path))
+ vm.add_args('-net', 'none')
vm.add_args('-drive', 'file=%s,if=none,id=disk0' % image_path)
if args:
vm.add_args(*args)
@@ -192,8 +200,12 @@ def reverse_debugging(self, shift=7, args=None):
logger.info('continue running')
self.gdb_cont_nowait(g)
- logger.info('running for 1s...')
- time.sleep(1)
+ if self.autosnapshot:
+ logger.info('running for 5s...')
+ time.sleep(5)
+ else:
+ logger.info('running for 1s...')
+ time.sleep(1)
logger.info('stopping to read final icount')
vm.qmp('stop')
self.gdb_break(g)
@@ -322,6 +334,9 @@ class ReverseDebugging_X86_64(ReverseDebugging):
# the trace precisely on x86.
verify_end = False
+ # x86 doesn't like autosnapshot
+ autosnapshot = False
+
def get_pc(self, g):
return self.get_reg_le(g, self.REG_PC) \
+ self.get_reg_le(g, self.REG_CS) * 0x10
@@ -355,6 +370,9 @@ class ReverseDebugging_AArch64(ReverseDebugging):
# the trace precisely on aarch64.
verify_end = False
+ # aarch64 doesn't like autosnapshot
+ autosnapshot = False
+
def test_aarch64_virt(self):
"""
:avocado: tags=arch:aarch64
--
2.42.0
