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This is just a shortcut to have 'type' in the sort key and use more
compact output format like below.
$ perf mem report -T
...
#
# Overhead Samples Memory access Snoop TLB access Data Type
# ........ ............ ....................................... ............ ...................... .........
#
14.84% 22 L1 hit None L1 or L2 hit (unknown)
7.68% 8 LFB/MAB hit None L1 or L2 hit (unknown)
7.17% 3 RAM hit Hit L2 miss (unknown)
6.29% 12 L1 hit None L1 or L2 hit (stack operation)
4.85% 5 RAM hit Hit L1 or L2 hit (unknown)
3.97% 5 LFB/MAB hit None L1 or L2 hit struct psi_group_cpu
3.18% 3 LFB/MAB hit None L1 or L2 hit (stack operation)
2.58% 3 L1 hit None L1 or L2 hit unsigned int
2.36% 2 L1 hit None L1 or L2 hit struct
2.31% 2 L1 hit None L1 or L2 hit struct psi_group_cpu
...
Users also can use their own sort keys and -T option makes sure it has
the 'type' sort key at the end.
$ perf mem report -T -s mem
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20240731235505.710436-7-namhyung@kernel.org
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 reStructuredText 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.