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authorNamhyung Kim <namhyung@kernel.org>2024-08-02 20:09:13 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2024-08-05 16:40:20 +0200
commit13159a139d85fa12bbbaefcde5a647e2b9721b19 (patch)
treebf5180067c23283a68ce2e9c37e1c78be820b6ca
parentperf mem: Add -T/--data-type option to report subcommand (diff)
downloadlinux-13159a139d85fa12bbbaefcde5a647e2b9721b19.tar.xz
linux-13159a139d85fa12bbbaefcde5a647e2b9721b19.zip
perf mem: Update documentation for new options
Add a common options section and move some items to the section. Also add description of new options to report options. Suggested-by: Ian Rogers <irogers@google.com> Reviewed-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.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/lkml/20240802180913.1023886-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/Documentation/perf-mem.txt94
1 files changed, 63 insertions, 31 deletions
diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt
index 47456b212e99..8a1bd9ff0f86 100644
--- a/tools/perf/Documentation/perf-mem.txt
+++ b/tools/perf/Documentation/perf-mem.txt
@@ -28,15 +28,8 @@ and kernel support is required. See linkperf:perf-arm-spe[1] for a setup guide.
Due to the statistical nature of SPE sampling, not every memory operation will
be sampled.
-OPTIONS
--------
-<command>...::
- Any command you can specify in a shell.
-
--i::
---input=<file>::
- Input file name.
-
+COMMON OPTIONS
+--------------
-f::
--force::
Don't do ownership validation
@@ -45,24 +38,9 @@ OPTIONS
--type=<type>::
Select the memory operation type: load or store (default: load,store)
--D::
---dump-raw-samples::
- Dump the raw decoded samples on the screen in a format that is easy to parse with
- one sample per line.
-
--x::
---field-separator=<separator>::
- Specify the field separator used when dump raw samples (-D option). By default,
- The separator is the space character.
-
--C::
---cpu=<cpu>::
- Monitor only on the list of CPUs provided. Multiple CPUs can be provided as a
- comma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0-2. Default
- is to monitor all CPUS.
--U::
---hide-unresolved::
- Only display entries resolved to a symbol.
+-v::
+--verbose::
+ Be more verbose (show counter open errors, etc)
-p::
--phys-data::
@@ -73,6 +51,9 @@ OPTIONS
RECORD OPTIONS
--------------
+<command>...::
+ Any command you can specify in a shell.
+
-e::
--event <event>::
Event selector. Use 'perf mem record -e list' to list available events.
@@ -85,14 +66,65 @@ RECORD OPTIONS
--all-user::
Configure all used events to run in user space.
--v::
---verbose::
- Be more verbose (show counter open errors, etc)
-
--ldlat <n>::
Specify desired latency for loads event. Supported on Intel and Arm64
processors only. Ignored on other archs.
+REPORT OPTIONS
+--------------
+-i::
+--input=<file>::
+ Input file name.
+
+-C::
+--cpu=<cpu>::
+ Monitor only on the list of CPUs provided. Multiple CPUs can be provided as a
+ comma-separated list with no space: 0,1. Ranges of CPUs are specified with -
+ like 0-2. Default is to monitor all CPUS.
+
+-D::
+--dump-raw-samples::
+ Dump the raw decoded samples on the screen in a format that is easy to parse with
+ one sample per line.
+
+-s::
+--sort=<key>::
+ Group result by given key(s) - multiple keys can be specified
+ in CSV format. The keys are specific to memory samples are:
+ symbol_daddr, symbol_iaddr, dso_daddr, locked, tlb, mem, snoop,
+ dcacheline, phys_daddr, data_page_size, blocked.
+
+ - symbol_daddr: name of data symbol being executed on at the time of sample
+ - symbol_iaddr: name of code symbol being executed on at the time of sample
+ - dso_daddr: name of library or module containing the data being executed
+ on at the time of the sample
+ - locked: whether the bus was locked at the time of the sample
+ - tlb: type of tlb access for the data at the time of the sample
+ - mem: type of memory access for the data at the time of the sample
+ - snoop: type of snoop (if any) for the data at the time of the sample
+ - dcacheline: the cacheline the data address is on at the time of the sample
+ - phys_daddr: physical address of data being executed on at the time of sample
+ - data_page_size: the data page size of data being executed on at the time of sample
+ - blocked: reason of blocked load access for the data at the time of the sample
+
+ And the default sort keys are changed to local_weight, mem, sym, dso,
+ symbol_daddr, dso_daddr, snoop, tlb, locked, blocked, local_ins_lat.
+
+-T::
+--type-profile::
+ Show data-type profile result instead of code symbols. This requires
+ the debug information and it will change the default sort keys to:
+ mem, snoop, tlb, type.
+
+-U::
+--hide-unresolved::
+ Only display entries resolved to a symbol.
+
+-x::
+--field-separator=<separator>::
+ Specify the field separator used when dump raw samples (-D option). By default,
+ The separator is the space character.
+
In addition, for report all perf report options are valid, and for record
all perf record options.