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Commit 30191250 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

fault-inject: Simplify stacktrace retrieval 



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

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Reviewed-by: default avatarJosh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: linux-mm@kvack.org
Cc: David Rientjes <rientjes@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: kasan-dev@googlegroups.com
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: iommu@lists.linux-foundation.org
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: David Sterba <dsterba@suse.com>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: linux-btrfs@vger.kernel.org
Cc: dm-devel@redhat.com
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: intel-gfx@lists.freedesktop.org
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tom Zanussi <tom.zanussi@linux.intel.com>
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: linux-arch@vger.kernel.org
Link: https://lkml.kernel.org/r/20190425094802.158306076@linutronix.de
parent af52bf6b

lib/fault-inject.c

+3 −9
Original line number Diff line number Diff line
@@ -65,22 +65,16 @@ static bool fail_task(struct fault_attr *attr, struct task_struct *task) 


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;