[patch V3 11/29] fault-inject: Simplify stacktrace retrieval

Thomas Gleixner
2019-04-25T10:00:36Z

Replace the indirection through struct stack_trace with an invocation of
the storage array based interface.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
---
lib/fault-inject.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)

--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -65,22 +65,16 @@ static bool fail_task(struct fault_attr

static bool fail_stacktrace(struct fault_attr *attr)
{
- struct stack_trace trace;
int depth = attr->stacktrace_depth;
unsigned long entries[MAX_STACK_TRACE_DEPTH];
- int n;
+ int n, nr_entries;
bool found = (attr->require_start == 0 && attr->require_end == ULONG_MAX);

if (depth == 0)
return found;

- trace.nr_entries = 0;
- trace.entries = entries;
- trace.max_entries = depth;
- trace.skip = 1;
-
- save_stack_trace(&trace);
- for (n = 0; n < trace.nr_entries; n++) {
+ nr_entries = stack_trace_save(entries, depth, 1);
+ for (n = 0; n < nr_entries; n++) {
if (attr->reject_start <= entries[n] &&
entries[n] < attr->reject_end)
return false;