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Message-ID: <5757547A.9050505@gmail.com> Date: Wed, 8 Jun 2016 08:10:50 +0900 From: Taeung Song <treeze.taeung@...il.com> To: Arnaldo Carvalho de Melo <arnaldo.melo@...il.com> Cc: Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org, Arnaldo Carvalho de Melo <acme@...nel.org>, Adrian Hunter <adrian.hunter@...el.com>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Andi Kleen <ak@...ux.intel.com>, David Ahern <dsahern@...il.com>, Ekaterina Tumanova <tumanova@...ux.vnet.ibm.com>, He Kuang <hekuang@...wei.com>, Jiri Olsa <jolsa@...hat.com>, Josh Poimboeuf <jpoimboe@...hat.com>, Kan Liang <kan.liang@...el.com>, Masami Hiramatsu <mhiramat@...nel.org>, Milian Wolff <milian.wolff@...b.com>, Namhyung Kim <namhyung@...nel.org>, Pekka Enberg <penberg@...nel.org>, Peter Zijlstra <peterz@...radead.org>, pi3orama@....com, Stephane Eranian <eranian@...gle.com>, Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>, Wang Nan <wangnan0@...wei.com>, Zefan Li <lizefan@...wei.com>, Arnaldo Carvalho de Melo <acme@...hat.com> Subject: Re: [GIT PULL 00/24] perf/core improvements and fixes Hi, Arnaldo I found something weird about perf/core branch on your repository. (I don't know whether it is just my illusion or not) I can't pull new commits on top of perf-core-for-mingo-20160606 by normal way as below # git remote show acme * remote acme Fetch URL: git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git # git log --oneline edb13ed tools lib bpf: Rename set_private() to set_priv() be834ff tools lib bpf: Make bpf_program__get_private() use IS_ERR() ... # git pull acme perf/core From git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux * branch perf/core -> FETCH_HEAD Already up-to-date. And then nothing changed, I didn't also find new commits and new tag 'perf-core-for-mingo-20160607'. However, if using tag perf-core-for-mingo-20160607, I can get new commits from your repository as below. # git fetch acme --tags remote: Counting objects: 4888, done. remote: Compressing objects: 100% (4800/4800), done. remote: Total 4888 (delta 266), reused 1212 (delta 59) Receiving objects: 100% (4888/4888), 21.36 MiB | 3.72 MiB/s, done. Resolving deltas: 100% (266/266), done. From git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux * [new tag] perf-core-for-mingo-20160307 -> perf-core-for-mingo-20160307 * [new tag] perf-core-for-mingo-20160329 -> perf-core-for-mingo-20160329 * [new tag] perf-core-for-mingo-20160407 -> perf-core-for-mingo-20160407 * [new tag] perf-core-for-mingo-20160607 -> perf-core-for-mingo-20160607 * [new tag] perf-ebpf-for-mingo -> perf-ebpf-for-mingo * [new tag] perf-urgent-for-mingo-20160510 -> perf-urgent-for-mingo-20160510 * [new tag] v2.6.11 -> v2.6.11 * [new tag] v2.6.11-tree -> v2.6.11-tree But there is a strange thing about git branch. I can't find which branch is that have tag perf-core-for-mingo-20160607 like below. # git branch -a --contains perf-core-for-mingo-20160607 As the final outcome, I got new commits on top of perf-core-for-mingo-20160606 directly using a tag 'perf-core-for-mingo-20160607' as below. # git reset --hard perf-core-for-mingo-20160607 HEAD is now at 057fbfb perf callchain: Support aarch64 cross-platform But isn't it a problem ? Just use a tag? Thanks, Taeung On 06/08/2016 05:04 AM, Arnaldo Carvalho de Melo wrote: > Hi Ingo, > > Please consider pulling, this is on top of perf-core-for-mingo-20160606, > > Thanks, > > - Arnaldo > > The following changes since commit 7db91f251056f90fec4121f028680ab3153a0f3c: > > perf config: Handle the error when config set is NULL at collect_config() (2016-06-06 17:43:19 -0300) > > are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-20160607 > > for you to fetch changes up to 057fbfb25cde4a368418f3f720cdc31d48800c4d: > > perf callchain: Support aarch64 cross-platform (2016-06-07 15:13:35 -0300) > > ---------------------------------------------------------------- > perf/core improvements and fixes: > > User visible: > > - Support cross unwinding, i.e. collecting '--call-graph dwarf' perf.data files > in one machine and then doing analysis in another machine of a different > hardware architecture. This enables, for instance, to do: > > perf record -a --call-graph dwarf > > on a x86-32 or aarch64 system and then do 'perf report' on it on a > x86_64 workstation. (He Kuang) > > - Fix crash in build_id_cache__kallsyms_path(), recent regression (Wang Nan) > > Infrastructure: > > - Make tools/lib/bpf use the IS_ERR return facility consistently and also stop > using the _get_ term for non-reference count methods (Arnaldo Carvalho de Melo) > > - 'perf config' refactorings (Taeung Song) > > Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com> > > ---------------------------------------------------------------- > Arnaldo Carvalho de Melo (7): > tools lib bpf: Use IS_ERR() reporting macros with bpf_map__get_private() > tools lib bpf: Rename bpf_map__get_name() to bpf_map__name() > tools lib bpf: Use IS_ERR() reporting macros with bpf_map__get_def() > tools lib bpf: Rename bpf_map__get_fd() to bpf_map__fd() > tools lib bpf: Remove _get_ from non-refcount method names > tools lib bpf: Make bpf_program__get_private() use IS_ERR() > tools lib bpf: Rename set_private() to set_priv() > > He Kuang (14): > perf unwind: Use LIBUNWIND_DIR for remote libunwind feature check > perf unwind: Decouple thread->address_space on libunwind > perf unwind: Introduce 'struct unwind_libunwind_ops' for local unwind > perf unwind: Move unwind__prepare_access from thread_new into thread__insert_map > perf unwind: Don't mix LIBUNWIND_LIBS into LIBUNWIND_LDFLAGS > perf unwind: Separate local/remote libunwind config > perf unwind: Rename unwind-libunwind.c to unwind-libunwind-local.c > perf tools: Extract common API out of unwind-libunwind-local.c > perf tools: Export normalize_arch() function > perf unwind: Check the target platform before assigning unwind methods > perf unwind: Change fixed name of libunwind__arch_reg_id to macro > perf unwind: Introduce flag to separate local/remote unwind compilation > perf callchain: Support x86 target platform > perf callchain: Support aarch64 cross-platform > > Taeung Song (2): > perf config: Constructor should free its allocated memory when failing > perf config: Use new perf_config_set__init() to initialize config set > > Wang Nan (1): > perf tools: Fix crash in build_id_cache__kallsyms_path() > > tools/lib/bpf/libbpf.c | 60 +-- > tools/lib/bpf/libbpf.h | 25 +- > tools/perf/arch/arm/util/Build | 2 +- > tools/perf/arch/arm64/util/Build | 2 +- > tools/perf/arch/arm64/util/unwind-libunwind.c | 4 +- > tools/perf/arch/common.c | 2 +- > tools/perf/arch/common.h | 1 + > tools/perf/arch/x86/util/Build | 2 +- > tools/perf/arch/x86/util/unwind-libunwind.c | 6 +- > tools/perf/config/Makefile | 52 +- > tools/perf/util/Build | 3 + > tools/perf/util/bpf-loader.c | 132 +++-- > tools/perf/util/build-id.c | 11 +- > tools/perf/util/config.c | 51 +- > tools/perf/util/libunwind/arm64.c | 35 ++ > tools/perf/util/libunwind/x86_32.c | 37 ++ > tools/perf/util/machine.c | 14 +- > tools/perf/util/thread.c | 13 +- > tools/perf/util/thread.h | 9 +- > tools/perf/util/unwind-libunwind-local.c | 697 ++++++++++++++++++++++++++ > tools/perf/util/unwind-libunwind.c | 688 ++----------------------- > tools/perf/util/unwind.h | 22 +- > 22 files changed, 1056 insertions(+), 812 deletions(-) > create mode 100644 tools/perf/util/libunwind/arm64.c > create mode 100644 tools/perf/util/libunwind/x86_32.c > create mode 100644 tools/perf/util/unwind-libunwind-local.c >
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