Messages in this thread | | | Date | Tue, 23 Oct 2018 16:29:35 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH V2 17/19] perf scripts python: exported-sql-viewer.py: Add All branches report |
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Em Tue, Oct 23, 2018 at 06:41:17PM +0000, Hunter, Adrian escreveu: > > -----Original Message----- > > From: Arnaldo Carvalho de Melo [mailto:acme@kernel.org] > > Sent: Tuesday, October 23, 2018 9:12 PM > > To: Hunter, Adrian <adrian.hunter@intel.com> > > Cc: Jiri Olsa <jolsa@redhat.com>; Andi Kleen <ak@linux.intel.com>; linux- > > kernel@vger.kernel.org > > Subject: Re: [PATCH V2 17/19] perf scripts python: exported-sql-viewer.py: > > Add All branches report > > > > Em Tue, Oct 23, 2018 at 10:59:49AM +0300, Adrian Hunter escreveu: > > > Add a report to display branches in a similar fashion to perf script. > > > The main purpose of this report is to display disassembly, however, > > > presently, the only supported disassembler is Intel XED, and > > > additionally the object code must be present in perf build ID cache. > > > > > > To use Intel XED, libxed.so must be present. To build and install > > > libxed.so: > > > git clone https://github.com/intelxed/mbuild.git mbuild > > > git clone https://github.com/intelxed/xed > > > cd xed > > > ./mfile.py --share > > > sudo ./mfile.py --prefix=/usr/local install > > > sudo ldconfig > > > > > > Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> > > > --- > > > > > > > > > Changes in V2: > > > > > > Fix branch report not appearing for kernel-only or user-only tracing: > > > Find branch events named like "branches:k" or "branches:u" as well > > as > > > just plain "branches", by splitting the name at the colon. i.e. > > > event = event.split(":")[0] > > > > So, I followed the instructions then ended up with: > > > > [acme@seventh perf]$ find /usr/local -name "*xed*" | head > > /usr/local/lib/libxed.so /usr/local/lib/libxed.a /usr/local/lib/libxed-ild.so > > /usr/local/lib/libxed-ild.a /usr/local/include/xed /usr/local/include/xed/xed- > > syntax-enum.h > > /usr/local/include/xed/xed-attributes.h > > /usr/local/include/xed/xed-build-defines.h > > /usr/local/include/xed/xed-cpuid-rec.h > > /usr/local/include/xed/xed-flags.h > > [acme@seventh perf]$ > > > > Ran ldconfig as root, etc: > > > > [acme@seventh perf]$ ldconfig -v -N | grep xed > > ldconfig: Can't stat /libx32: No such file or directory > > ldconfig: Path `/usr/lib' given more than once > > ldconfig: Path `/usr/lib64' given more than once > > ldconfig: Can't stat /usr/libx32: No such file or directory [acme@seventh > > perf]$ > > > > [acme@seventh perf]$ file /usr/local/lib/libxed.so > > /usr/local/lib/libxed.so: ELF 64-bit LSB shared object, x86-64, version 1 > > (SYSV), dynamically linked, > > BuildID[sha1]=09cf45310a731f727b4575582a638052b8f3e3bb, not stripped > > [acme@seventh perf]$ file /usr/local/lib/libxed-ild.so > > /usr/local/lib/libxed-ild.so: ELF 64-bit LSB shared object, x86-64, version 1 > > (SYSV), dynamically linked, > > BuildID[sha1]=a5601603e305bb7b7f8edc7da0e78acbc9b63eba, not stripped > > [acme@seventh perf]$ > > > > Tried with: > > > > export LD_LIBRARY_PATH=/usr/local/lib/ > > > > But so far couldn't get it to show the disassembly. > > > > The "All Branches" is there, wasn't in v1 of this patch. > > > > Ideas? > > The "All Branches" report is a 2-level tree, and the disassembly displays when the next level of the tree is opened > i.e. click the arrow at the start of the line.
Right, I pressed on those arrows, nothing appeared, do you have any hotkey to expand them all at once? > Have you tried both kernel and user space?
[root@seventh perf]# perf evlist -v intel_pt//u: type: 8, size: 112, config: 0x300e601, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, exclude_kernel: 1, exclude_hv: 1, sample_id_all: 1 dummy:u: type: 1, size: 112, config: 0x9, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|IDENTIFIER, read_format: ID, inherit: 1, exclude_kernel: 1, exclude_hv: 1, mmap: 1, comm: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, context_switch: 1 [root@seventh perf]#
Good question, it was with that //u, so just userspace, trying removing that part. > The script looks for dsos in the build id cache. The dsos can be viewed by selecting dsos_view from the Tables menu, > so you could check if that information looks right. > > Also the script has a variable "have_disassembler", so you could hack the script to print that to find out if XED is working. >
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