From: He Kuang <hekuang@huawei.com>
To: <peterz@infradead.org>, <mingo@redhat.com>, <acme@kernel.org>,
<alexander.shishkin@linux.intel.com>, <jolsa@redhat.com>,
<wangnan0@huawei.com>, <hekuang@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: [PATCH 0/3] Fixes on remote unwind
Date: Wed, 8 Jun 2016 10:15:35 +0000 [thread overview]
Message-ID: <1465380938-64371-1-git-send-email-hekuang@huawei.com> (raw)
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.
Thank you.
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(-)
--
1.8.5.2
next reply other threads:[~2016-06-08 10:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 10:15 He Kuang [this message]
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
2016-06-21 7:33 ` Jiri Olsa
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