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483635a9d0
Running 'perf record' with no target (-a, -p, -t, etc) will now collect system wide data. Commiter notes: Testing it: [root@jouet ~]# perf record ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.351 MB perf.data (366 samples) ] # is equivalent to: # perf record -a ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.411 MB perf.data (978 samples) ] # Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20170217170018.GA15389@krava Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.