From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Gleixner Subject: [patch V3 13/29] btrfs: ref-verify: Simplify stack trace retrieval Date: Thu, 25 Apr 2019 11:45:06 +0200 Message-ID: <20190425094802.338890064@linutronix.de> References: <20190425094453.875139013@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: LKML Cc: Mike Snitzer , David Airlie , Catalin Marinas , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, dm-devel@redhat.com, Alexander Potapenko , Christoph Lameter , Miroslav Benes , Christoph Hellwig , Alasdair Kergon , Marek Szyprowski , linux-arch@vger.kernel.org, x86@kernel.org, kasan-dev@googlegroups.com, Johannes Thumshirn , Andrey Ryabinin , Alexey Dobriyan , intel-gfx@lists.freedesktop.org, David Rientjes , Josef Bacik , Steven Rostedt , Akinobu Mita , Mike Rapoport , Andy Lutomirski , Josh Poimboeuf List-Id: linux-arch.vger.kernel.org UmVwbGFjZSB0aGUgaW5kaXJlY3Rpb24gdGhyb3VnaCBzdHJ1Y3Qgc3RhY2tfdHJhY2Ugd2l0aCBh biBpbnZvY2F0aW9uIG9mCnRoZSBzdG9yYWdlIGFycmF5IGJhc2VkIGludGVyZmFjZS4KClNpZ25l ZC1vZmYtYnk6IFRob21hcyBHbGVpeG5lciA8dGdseEBsaW51dHJvbml4LmRlPgpSZXZpZXdlZC1i eTogSm9oYW5uZXMgVGh1bXNoaXJuIDxqdGh1bXNoaXJuQHN1c2UuZGU+CkFja2VkLWJ5OiBEYXZp ZCBTdGVyYmEgPGRzdGVyYmFAc3VzZS5jb20+CkNjOiBDaHJpcyBNYXNvbiA8Y2xtQGZiLmNvbT4K Q2M6IEpvc2VmIEJhY2lrIDxqb3NlZkB0b3hpY3BhbmRhLmNvbT4KQ2M6IGxpbnV4LWJ0cmZzQHZn ZXIua2VybmVsLm9yZwotLS0KIGZzL2J0cmZzL3JlZi12ZXJpZnkuYyB8ICAgMTUgKystLS0tLS0t LS0tLS0tCiAxIGZpbGUgY2hhbmdlZCwgMiBpbnNlcnRpb25zKCspLCAxMyBkZWxldGlvbnMoLSkK Ci0tLSBhL2ZzL2J0cmZzL3JlZi12ZXJpZnkuYworKysgYi9mcy9idHJmcy9yZWYtdmVyaWZ5LmMK QEAgLTIwNSwyOCArMjA1LDE3IEBAIHN0YXRpYyBzdHJ1Y3Qgcm9vdF9lbnRyeSAqbG9va3VwX3Jv b3RfZW4KICNpZmRlZiBDT05GSUdfU1RBQ0tUUkFDRQogc3RhdGljIHZvaWQgX19zYXZlX3N0YWNr X3RyYWNlKHN0cnVjdCByZWZfYWN0aW9uICpyYSkKIHsKLQlzdHJ1Y3Qgc3RhY2tfdHJhY2Ugc3Rh Y2tfdHJhY2U7Ci0KLQlzdGFja190cmFjZS5tYXhfZW50cmllcyA9IE1BWF9UUkFDRTsKLQlzdGFj a190cmFjZS5ucl9lbnRyaWVzID0gMDsKLQlzdGFja190cmFjZS5lbnRyaWVzID0gcmEtPnRyYWNl OwotCXN0YWNrX3RyYWNlLnNraXAgPSAyOwotCXNhdmVfc3RhY2tfdHJhY2UoJnN0YWNrX3RyYWNl KTsKLQlyYS0+dHJhY2VfbGVuID0gc3RhY2tfdHJhY2UubnJfZW50cmllczsKKwlyYS0+dHJhY2Vf bGVuID0gc3RhY2tfdHJhY2Vfc2F2ZShyYS0+dHJhY2UsIE1BWF9UUkFDRSwgMik7CiB9CiAKIHN0 YXRpYyB2b2lkIF9fcHJpbnRfc3RhY2tfdHJhY2Uoc3RydWN0IGJ0cmZzX2ZzX2luZm8gKmZzX2lu Zm8sCiAJCQkJc3RydWN0IHJlZl9hY3Rpb24gKnJhKQogewotCXN0cnVjdCBzdGFja190cmFjZSB0 cmFjZTsKLQogCWlmIChyYS0+dHJhY2VfbGVuID09IDApIHsKIAkJYnRyZnNfZXJyKGZzX2luZm8s ICIgIHJlZi12ZXJpZnk6IG5vIHN0YWNrdHJhY2UiKTsKIAkJcmV0dXJuOwogCX0KLQl0cmFjZS5u cl9lbnRyaWVzID0gcmEtPnRyYWNlX2xlbjsKLQl0cmFjZS5lbnRyaWVzID0gcmEtPnRyYWNlOwot CXByaW50X3N0YWNrX3RyYWNlKCZ0cmFjZSwgMik7CisJc3RhY2tfdHJhY2VfcHJpbnQocmEtPnRy YWNlLCByYS0+dHJhY2VfbGVuLCAyKTsKIH0KICNlbHNlCiBzdGF0aWMgdm9pZCBpbmxpbmUgX19z YXZlX3N0YWNrX3RyYWNlKHN0cnVjdCByZWZfYWN0aW9uICpyYSkKCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0Cklu dGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5v cmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZng= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from Galois.linutronix.de ([146.0.238.70]:57920 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387566AbfDYKAJ (ORCPT ); Thu, 25 Apr 2019 06:00:09 -0400 Message-ID: <20190425094802.338890064@linutronix.de> Date: Thu, 25 Apr 2019 11:45:06 +0200 From: Thomas Gleixner Subject: [patch V3 13/29] btrfs: ref-verify: Simplify stack trace retrieval References: <20190425094453.875139013@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-arch-owner@vger.kernel.org List-ID: To: LKML Cc: Josh Poimboeuf , x86@kernel.org, Andy Lutomirski , Johannes Thumshirn , David Sterba , Chris Mason , Josef Bacik , linux-btrfs@vger.kernel.org, Steven Rostedt , Alexander Potapenko , Alexey Dobriyan , Andrew Morton , Christoph Lameter , Pekka Enberg , linux-mm@kvack.org, David Rientjes , 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 , 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 Message-ID: <20190425094506.r7Z82btjX8wWxBBfa23HoBn3KK8zATt43cSxS9Z0STY@z> Replace the indirection through struct stack_trace with an invocation of the storage array based interface. Signed-off-by: Thomas Gleixner Reviewed-by: Johannes Thumshirn Acked-by: David Sterba Cc: Chris Mason Cc: Josef Bacik Cc: linux-btrfs@vger.kernel.org --- fs/btrfs/ref-verify.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) --- a/fs/btrfs/ref-verify.c +++ b/fs/btrfs/ref-verify.c @@ -205,28 +205,17 @@ static struct root_entry *lookup_root_en #ifdef CONFIG_STACKTRACE static void __save_stack_trace(struct ref_action *ra) { - struct stack_trace stack_trace; - - stack_trace.max_entries = MAX_TRACE; - stack_trace.nr_entries = 0; - stack_trace.entries = ra->trace; - stack_trace.skip = 2; - save_stack_trace(&stack_trace); - ra->trace_len = stack_trace.nr_entries; + ra->trace_len = stack_trace_save(ra->trace, MAX_TRACE, 2); } static void __print_stack_trace(struct btrfs_fs_info *fs_info, struct ref_action *ra) { - struct stack_trace trace; - if (ra->trace_len == 0) { btrfs_err(fs_info, " ref-verify: no stacktrace"); return; } - trace.nr_entries = ra->trace_len; - trace.entries = ra->trace; - print_stack_trace(&trace, 2); + stack_trace_print(ra->trace, ra->trace_len, 2); } #else static void inline __save_stack_trace(struct ref_action *ra)