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Linux kernel source tree
5f70c6c559
stat+std_output.sh test fails on my arm64 machine:
[root@localhost shell]# ./stat+std_output.sh
Checking STD output: no args Unknown event name in TopDownL1 # 0.18 retiring
[root@localhost shell]# ./stat+std_output.sh
Checking STD output: no args [Success]
Checking STD output: system wide [Success]
Checking STD output: interval [Success]
Checking STD output: per thread Unknown event name in tmux: server-1114960 # 0.41 frontend_bound
When no args specified `perf stat` will add TopdownL1 metric group
and the output will be like:
[root@localhost shell]# perf stat -- stress-ng --vm 1 --timeout 1
stress-ng: info: [3351733] setting to a 1 second run per stressor
stress-ng: info: [3351733] dispatching hogs: 1 vm
stress-ng: info: [3351733] successful run completed in 1.02s
Performance counter stats for 'stress-ng --vm 1 --timeout 1':
1,037.71 msec task-clock # 1.000 CPUs utilized
13 context-switches # 12.528 /sec
1 cpu-migrations # 0.964 /sec
67,544 page-faults # 65.090 K/sec
2,691,932,561 cycles # 2.594 GHz (74.56%)
6,571,333,653 instructions # 2.44 insn per cycle (74.92%)
521,863,142 branches # 502.901 M/sec (75.21%)
425,879 branch-misses # 0.08% of all branches (87.57%)
TopDownL1 # 0.61 retiring (87.67%)
# 0.03 frontend_bound (87.67%)
# 0.02 bad_speculation (87.67%)
# 0.34 backend_bound (74.61%)
1.038138390 seconds time elapsed
0.844849000 seconds user
0.189053000 seconds sys
Metrics in group TopDownL1 don't have event name on arm64 but are not
listed in the $skip_metric list which they should be listed. Add them
to the skip list as what does for x86 platforms in [1].
[1] commit
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||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.