Messages in this thread | | | Subject | Re: [PATCH 0/3] Fixes on remote unwind | From | Hekuang <> | Date | Sun, 12 Jun 2016 18:03:42 +0800 |
| |
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. I also checked tip.git, this patch is not there either, is this patch missed? This is the previous git pull request mail:
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1148601.html
Thank you. > > 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(-) >
| |