From: Hekuang <hekuang@huawei.com>
To: <peterz@infradead.org>, <mingo@redhat.com>, <acme@kernel.org>,
<alexander.shishkin@linux.intel.com>, <jolsa@redhat.com>,
<wangnan0@huawei.com>, <jpoimboe@redhat.com>,
<ak@linux.intel.com>, <eranian@google.com>, <namhyung@kernel.org>,
<adrian.hunter@intel.com>, <sukadev@linux.vnet.ibm.com>,
<masami.hiramatsu.pt@hitachi.com>, <tumanova@linux.vnet.ibm.com>,
<kan.liang@intel.com>, <penberg@kernel.org>, <dsahern@gmail.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/3] Fixes on remote unwind
Date: Tue, 21 Jun 2016 09:59:00 +0800 [thread overview]
Message-ID: <57689F64.4070309@huawei.com> (raw)
In-Reply-To: <1465380938-64371-1-git-send-email-hekuang@huawei.com>
在 2016/6/8 18:15, He Kuang 写道:
> The remote unwind can supported scenario where we collect on a x86_64
> machine and want to do analysis on a ARM64 or x86-32 machine. Though
> this is not tested, after Arnaldo questioned the above issue, I tested
> and found a bug.
>
> In util/unwind-libunwind-local.c, PERF_REG_SP/IP is used, but those
> macros are assigned to the host platform, we should redefine them in
> the wrapper file, for example in "util/libunwind/x86_32.c".
>
> After fixing this problem, i686 perf.data can be parsed on aarch64
> machine.
>
> To Arnaldo, I noticed that this patch
> "perf tools: Find vdso supporting cross-platform analysis"
> is not on "origin/perf/unwind" branch, this patch was applied, please
> check if it was missed, the above test needs this patch.
Thanks for solving this, and please have a look at the patches in
this thread.
>
> He Kuang (3):
> perf unwind: Change macro names of perf register
> perf unwind: Fix wrongly used regs for x86_32 unwind
> perf unwind: Fix wrongly used regs for aarch64 unwind
>
> tools/perf/util/libunwind/arm64.c | 5 +++++
> tools/perf/util/libunwind/x86_32.c | 6 ++++++
> tools/perf/util/unwind-libunwind-local.c | 6 ++++--
> tools/perf/util/unwind.h | 9 +++++++++
> 4 files changed, 24 insertions(+), 2 deletions(-)
>
next prev parent reply other threads:[~2016-06-21 2:02 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 10:15 [PATCH 0/3] Fixes on remote unwind He Kuang
2016-06-08 10:15 ` [PATCH 1/3] perf unwind: Change macro names of perf register He Kuang
2016-06-08 10:15 ` [PATCH 2/3] perf unwind: Fix wrongly used regs for x86_32 unwind He Kuang
2016-06-08 10:15 ` [PATCH 3/3] perf unwind: Fix wrongly used regs for aarch64 unwind He Kuang
2016-06-12 10:03 ` [PATCH 0/3] Fixes on remote unwind Hekuang
2016-06-21 1:59 ` Hekuang [this message]
2016-06-21 7:33 ` Jiri Olsa
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