fault-inject: Simplify stacktrace retrieval
Replace the indirection through struct stack_trace with an invocation of the storage array based interface. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Josh 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
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@ -65,22 +65,16 @@ static bool fail_task(struct fault_attr *attr, struct task_struct *task)
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static bool fail_stacktrace(struct fault_attr *attr)
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static bool fail_stacktrace(struct fault_attr *attr)
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{
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{
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struct stack_trace trace;
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int depth = attr->stacktrace_depth;
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int depth = attr->stacktrace_depth;
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unsigned long entries[MAX_STACK_TRACE_DEPTH];
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unsigned long entries[MAX_STACK_TRACE_DEPTH];
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int n;
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int n, nr_entries;
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bool found = (attr->require_start == 0 && attr->require_end == ULONG_MAX);
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bool found = (attr->require_start == 0 && attr->require_end == ULONG_MAX);
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if (depth == 0)
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if (depth == 0)
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return found;
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return found;
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trace.nr_entries = 0;
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nr_entries = stack_trace_save(entries, depth, 1);
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trace.entries = entries;
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for (n = 0; n < nr_entries; n++) {
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trace.max_entries = depth;
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trace.skip = 1;
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save_stack_trace(&trace);
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for (n = 0; n < trace.nr_entries; n++) {
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if (attr->reject_start <= entries[n] &&
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if (attr->reject_start <= entries[n] &&
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entries[n] < attr->reject_end)
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entries[n] < attr->reject_end)
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return false;
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return false;
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