summaryrefslogtreecommitdiff
path: root/tools/perf/Documentation/perf-kmem.txt
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/Documentation/perf-kmem.txt')
-rw-r--r--tools/perf/Documentation/perf-kmem.txt57
1 files changed, 57 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-kmem.txt b/tools/perf/Documentation/perf-kmem.txt
new file mode 100644
index 000000000..23219c65c
--- /dev/null
+++ b/tools/perf/Documentation/perf-kmem.txt
@@ -0,0 +1,57 @@
+perf-kmem(1)
+============
+
+NAME
+----
+perf-kmem - Tool to trace/measure kernel memory properties
+
+SYNOPSIS
+--------
+[verse]
+'perf kmem' {record|stat} [<options>]
+
+DESCRIPTION
+-----------
+There are two variants of perf kmem:
+
+ 'perf kmem record <command>' to record the kmem events
+ of an arbitrary workload.
+
+ 'perf kmem stat' to report kernel memory statistics.
+
+OPTIONS
+-------
+-i <file>::
+--input=<file>::
+ Select the input file (default: perf.data unless stdin is a fifo)
+
+-v::
+--verbose::
+ Be more verbose. (show symbol address, etc)
+
+--caller::
+ Show per-callsite statistics
+
+--alloc::
+ Show per-allocation statistics
+
+-s <key[,key2...]>::
+--sort=<key[,key2...]>::
+ Sort the output (default: frag,hit,bytes)
+
+-l <num>::
+--line=<num>::
+ Print n lines only
+
+--raw-ip::
+ Print raw ip instead of symbol
+
+--slab::
+ Analyze SLAB allocator events.
+
+--page::
+ Analyze page allocator events
+
+SEE ALSO
+--------
+linkperf:perf-record[1]