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2f2c41bdd8
The 'type' sort key is to aggregate hist entries by data type they
access. Add mem_type field to hist_entry struct to save the type. If
hist_entry__get_data_type() returns NULL, it'd use the 'unknown_type'
instance.
Committer testing:
Before:
# perf mem record sleep 2s
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.037 MB perf.data (4 samples) ]
root@number:/home/acme/Downloads# perf report --stdio -s type
Error:
Unknown --sort key: `type'
Usage: perf report [<options>]
-s, --sort <key[,key2...]>
sort by key(s): overhead overhead_sys overhead_us overhead_guest_sys
overhead_guest_us overhead_children sample period
pid comm dso symbol parent cpu socket srcline srcfile
local_weight weight transaction trace symbol_size
dso_size cgroup cgroup_id ipc_null time code_page_size
local_ins_lat ins_lat local_p_stage_cyc p_stage_cyc
addr local_retire_lat retire_lat simd dso_from dso_to
symbol_from symbol_to mispredict abort in_tx cycles
srcline_from srcline_to ipc_lbr addr_from addr_to
symbol_daddr dso_daddr locked tlb mem snoop dcacheline
symbol_iaddr phys_daddr data_page_size blocked
#
After:
# perf report --stdio -s type
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 4 of event 'cpu_atom/mem-loads,ldlat=30/P'
# Event count (approx.): 7
#
# Overhead Data Type
# ........ .........
#
100.00% (unknown)
#
# (Tip: Print event counts in CSV format with: perf stat -x,)
#
# rpm -q kernel-debuginfo
kernel-debuginfo-6.6.4-200.fc39.x86_64
# uname -r
6.6.4-200.fc39.x86_64
#
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: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: linux-toolchains@vger.kernel.org>
Cc: linux-trace-devel@vger.kernel.org>
Link: https://lore.kernel.org/r/20231213001323.718046-9-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 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.