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authorDon Zickus <dzickus@redhat.com>2014-05-23 18:41:23 +0200
committerJiri Olsa <jolsa@kernel.org>2014-06-09 13:34:47 +0200
commit75e906c9601aee73b88d6e6dc02371f8c3ca24d7 (patch)
treea24f444c8a2fe8d851837493ceffe8e390c34d1c /tools
parentRevert "perf: Disable PERF_RECORD_MMAP2 support" (diff)
downloadlinux-75e906c9601aee73b88d6e6dc02371f8c3ca24d7.tar.xz
linux-75e906c9601aee73b88d6e6dc02371f8c3ca24d7.zip
perf report: Add mem-mode documentation to report command
Add mem-mode sorting types and mem-mode itself to perf-report documentation. Signed-off-by: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/r/1400526833-141779-5-git-send-email-dzickus@redhat.com Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/Documentation/perf-report.txt22
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index cefdf430d1b4..00fbfb6d7f14 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -117,6 +117,21 @@ OPTIONS
By default, every sort keys not specified in -F will be appended
automatically.
+ If --mem-mode option is used, following sort keys are also available
+ (incompatible with --branch-stack):
+ symbol_daddr, dso_daddr, locked, tlb, mem, snoop.
+
+ - symbol_daddr: name of data 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 sample
+ - locked: whether the bus was locked at the time of sample
+ - tlb: type of tlb access for the data at the time of sample
+ - mem: type of memory access for the data at the time of sample
+ - snoop: type of snoop (if any) for the data at the time of sample
+
+ And default sort keys are changed to local_weight, mem, sym, dso,
+ symbol_daddr, dso_daddr, snoop, tlb, locked, see '--mem-mode'.
+
-p::
--parent=<regex>::
A regex filter to identify parent. The parent is a caller of this
@@ -260,6 +275,13 @@ OPTIONS
Demangle symbol names to human readable form. It's enabled by default,
disable with --no-demangle.
+--mem-mode::
+ Use the data addresses of samples in addition to instruction addresses
+ to build the histograms. To generate meaningful output, the perf.data
+ file must have been obtained using perf record -d -W and using a
+ special event -e cpu/mem-loads/ or -e cpu/mem-stores/. See
+ 'perf mem' for simpler access.
+
--percent-limit::
Do not show entries which have an overhead under that percent.
(Default: 0).