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[2a01:7a0:2:106d:700::1]) by mx.google.com with ESMTPS id b142si5333007wmd.37.2019.04.25.02.59.14 for (version=TLS1_2 cipher=AES128-SHA bits=128/128); Thu, 25 Apr 2019 02:59:14 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of tglx@linutronix.de designates 2a01:7a0:2:106d:700::1 as permitted sender) client-ip=2a01:7a0:2:106d:700::1; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of tglx@linutronix.de designates 2a01:7a0:2:106d:700::1 as permitted sender) smtp.mailfrom=tglx@linutronix.de Received: from localhost ([127.0.0.1] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1hJb9r-0001rD-Kz; Thu, 25 Apr 2019 11:59:11 +0200 Message-Id: <20190425094801.771410441@linutronix.de> User-Agent: quilt/0.65 Date: Thu, 25 Apr 2019 11:45:00 +0200 From: Thomas Gleixner To: LKML Cc: Josh Poimboeuf , x86@kernel.org, Andy Lutomirski , Christoph Lameter , Andrew Morton , Pekka Enberg , linux-mm@kvack.org, David Rientjes , Steven Rostedt , Alexander Potapenko , Alexey Dobriyan , Catalin Marinas , Dmitry Vyukov , Andrey Ryabinin , kasan-dev@googlegroups.com, Mike Rapoport , Akinobu Mita , Christoph Hellwig , iommu@lists.linux-foundation.org, Robin Murphy , Marek Szyprowski , Johannes Thumshirn , David Sterba , Chris Mason , Josef Bacik , linux-btrfs@vger.kernel.org, dm-devel@redhat.com, Mike Snitzer , Alasdair Kergon , Daniel Vetter , intel-gfx@lists.freedesktop.org, Joonas Lahtinen , Maarten Lankhorst , dri-devel@lists.freedesktop.org, David Airlie , Jani Nikula , Rodrigo Vivi , Tom Zanussi , Miroslav Benes , linux-arch@vger.kernel.org Subject: [patch V3 07/29] mm/slub: Simplify stack trace retrieval References: <20190425094453.875139013@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Replace the indirection through struct stack_trace with an invocation of the storage array based interface. Signed-off-by: Thomas Gleixner Acked-by: Christoph Lameter Cc: Andrew Morton Cc: Pekka Enberg Cc: linux-mm@kvack.org Cc: David Rientjes --- mm/slub.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) --- a/mm/slub.c +++ b/mm/slub.c @@ -552,18 +552,14 @@ static void set_track(struct kmem_cache if (addr) { #ifdef CONFIG_STACKTRACE - struct stack_trace trace; + unsigned int nr_entries; - trace.nr_entries = 0; - trace.max_entries = TRACK_ADDRS_COUNT; - trace.entries = p->addrs; - trace.skip = 3; metadata_access_enable(); - save_stack_trace(&trace); + nr_entries = stack_trace_save(p->addrs, TRACK_ADDRS_COUNT, 3); metadata_access_disable(); - if (trace.nr_entries < TRACK_ADDRS_COUNT) - p->addrs[trace.nr_entries] = 0; + if (nr_entries < TRACK_ADDRS_COUNT) + p->addrs[nr_entries] = 0; #endif p->addr = addr; p->cpu = smp_processor_id();