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[ Upstream commit0a4d8fb229] Same as in the commit0176622953("perf record: Support s390 random socket_id assignment"), aarch64 also have this problem. Without this fix: [root@localhost perf]# ./perf report --header -I -v ... socket_id number is too big.You may need to upgrade the perf tool. # ======== # captured on : Thu Aug 1 22:58:38 2019 # header version : 1 ... # Core ID and Socket ID information is not available ... With this fix: [root@localhost perf]# ./perf report --header -I -v ... cpumask list: 0-31 cpumask list: 32-63 cpumask list: 64-95 cpumask list: 96-127 # ======== # captured on : Thu Aug 1 22:58:38 2019 # header version : 1 ... # CPU 0: Core ID 0, Socket ID 36 # CPU 1: Core ID 1, Socket ID 36 ... # CPU 126: Core ID 126, Socket ID 8442 # CPU 127: Core ID 127, Socket ID 8442 ... Signed-off-by: Tan Xiaojun <tanxiaojun@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Link: http://lkml.kernel.org/r/1564717737-21602-1-git-send-email-tanxiaojun@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.