From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751393AbbJJXeP (ORCPT ); Sat, 10 Oct 2015 19:34:15 -0400 Received: from mail.kernel.org ([198.145.29.136]:59619 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750964AbbJJXeO (ORCPT ); Sat, 10 Oct 2015 19:34:14 -0400 Date: Sat, 10 Oct 2015 20:34:08 -0300 From: Arnaldo Carvalho de Melo To: Rabin Vincent , Jiri Olsa Cc: Ingo Molnar , Peter Zijlstra , linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/5] perf: unwind: fix unw_word_t pointer casts Message-ID: <20151010233408.GP14409@kernel.org> References: <1443379079-29133-1-git-send-email-rabin.vincent@axis.com> <20151010154940.GA26352@debian> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151010154940.GA26352@debian> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Sat, Oct 10, 2015 at 05:49:40PM +0200, Rabin Vincent escreveu: > Hi Arnaldo, > > Do you have any comments on this patch set? I looked at the patches now, all seem fine from a quick look. The last patch is interesting, and a more general way of installing what is required for a full build using the native method for a distro, i.e. using yum/dnf/apt/etc would come in handy as well, so that it doesn't look like we recommend this fetch-the-sources-and-build-it method, but sure, that can come later, when someone steps up to that work. Since this touches the build system and libunwind, areas that Jiri wrote/knows better, I'd like to get his ack, Jiri? - Arnaldo > Thanks. > > On Sun, Sep 27, 2015 at 08:37:55PM +0200, Rabin Vincent wrote: > > unw_word_t is uint64_t even on 32-bit MIPS. Cast it to uintptr_t before > > the cast to void *p to get rid of the following errors: > > > > util/unwind-libunwind.c: In function 'access_mem': > > util/unwind-libunwind.c:464:4: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] > > util/unwind-libunwind.c:475:2: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] > > cc1: all warnings being treated as errors > > make[3]: *** [util/unwind-libunwind.o] Error 1 > > > > Signed-off-by: Rabin Vincent > > --- > > tools/perf/util/unwind-libunwind.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c > > index 4c00507..ef799dc 100644 > > --- a/tools/perf/util/unwind-libunwind.c > > +++ b/tools/perf/util/unwind-libunwind.c > > @@ -461,7 +461,7 @@ static int access_mem(unw_addr_space_t __maybe_unused as, > > if (ret) { > > pr_debug("unwind: access_mem %p not inside range" > > " 0x%" PRIx64 "-0x%" PRIx64 "\n", > > - (void *) addr, start, end); > > + (void *) (uintptr_t) addr, start, end); > > *valp = 0; > > return ret; > > } > > @@ -471,7 +471,7 @@ static int access_mem(unw_addr_space_t __maybe_unused as, > > offset = addr - start; > > *valp = *(unw_word_t *)&stack->data[offset]; > > pr_debug("unwind: access_mem addr %p val %lx, offset %d\n", > > - (void *) addr, (unsigned long)*valp, offset); > > + (void *) (uintptr_t) addr, (unsigned long)*valp, offset); > > return 0; > > } > > > > -- > > 1.7.10.4 > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Please read the FAQ at http://www.tux.org/lkml/