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| author | Vasily Gorbik <gor@linux.ibm.com> | 2022-02-01 21:04:16 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2022-03-01 21:05:09 +0100 |
| commit | 8a0c9705502701cc6a5d87d70bc6b631ec939265 (patch) | |
| tree | 5fccd4577fda22241da4e394f568f4c5f4a5321a /arch/s390/lib | |
| parent | 93bd3232448f699f47d06590aeb56edfebab4495 (diff) | |
s390/test_unwind: add "backtrace" module parameter
By default no backtraces are printed when a test succeeds, but sometimes
it is useful to spot issues automated test doesn't cover. Add "backtrace"
module parameter to force it.
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/lib')
| -rw-r--r-- | arch/s390/lib/test_unwind.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/s390/lib/test_unwind.c b/arch/s390/lib/test_unwind.c index 744b47692399..8be9ca263127 100644 --- a/arch/s390/lib/test_unwind.c +++ b/arch/s390/lib/test_unwind.c @@ -20,6 +20,10 @@ static struct kunit *current_test; #define BT_BUF_SIZE (PAGE_SIZE * 4) +static bool force_bt; +module_param_named(backtrace, force_bt, bool, 0444); +MODULE_PARM_DESC(backtrace, "print backtraces for all tests"); + /* * To avoid printk line limit split backtrace by lines */ @@ -98,7 +102,7 @@ static noinline int test_unwind(struct task_struct *task, struct pt_regs *regs, kunit_err(current_test, "Maximum number of frames exceeded\n"); ret = -EINVAL; } - if (ret) + if (ret || force_bt) print_backtrace(bt); kfree(bt); return ret; |