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If the input perf.data has a kcore_dir, copy it into the output, since at least the kallsyms in the kcore_dir will be useful to the output. Example: Before: $ ls -lR perf.data-from-desktop perf.data-from-desktop: total 916 -rw------- 1 user user 931756 May 19 09:55 data drwx------ 2 user user 4096 May 19 09:55 kcore_dir perf.data-from-desktop/kcore_dir: total 42952 -r-------- 1 user user 7582467 May 19 09:55 kallsyms -r-------- 1 user user 36388864 May 19 09:55 kcore -r-------- 1 user user 4828 May 19 09:55 modules $ perf inject -i perf.data-from-desktop -o injected-perf.data $ ls -lR injected-perf.data -rw------- 1 user user 931320 May 20 15:08 injected-perf.data After: $ perf inject -i perf.data-from-desktop -o injected-perf.data $ ls -lR injected-perf.data injected-perf.data: total 916 -rw------- 1 user user 931320 May 20 15:21 data drwx------ 2 user user 4096 May 20 15:21 kcore_dir injected-perf.data/kcore_dir: total 42952 -r-------- 1 user user 7582467 May 20 15:21 kallsyms -r-------- 1 user user 36388864 May 20 15:21 kcore -r-------- 1 user user 4828 May 20 15:21 modules Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220520132404.25853-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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.