Linux kernel for uConsole
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930f8b3479
Add --tasks option to display monitored tasks stored in perf.data.
Displaying pid/tid/ppid plus the command string aligned to distinguish
parent and child tasks.
$ perf record -a
...
$ perf report --tasks
# pid tid ppid comm
0 0 -1 |swapper
2 2 0 | kthreadd
14080 14080 2 | kworker/u17:1
4 4 2 | kworker/0:0H
6 6 2 | mm_percpu_wq
...
1 1 0 | systemd
23242 23242 1 | firefox
23242 23298 23242 | Cache2 I/O
23242 23304 23242 | GMPThread
...
1195 1195 1 | login
1611 1611 1195 | bash
1639 1639 1611 | startx
1663 1663 1639 | xinit
1673 1673 1663 | xmonad-x86_64-l
23939 23939 1673 | xterm
23941 23941 23939 | bash
23963 23963 23941 | mutt
24954 24954 23963 | offlineimap
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180107160356.28203-13-jolsa@kernel.org
[ Make it --tasks, plural, --task works as well, as its unambiguous ]
[ Use machine__find_thread(), not findnew(), as pointed out by Namhyung ]
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.