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authorAndi Kleen <ak@linux.intel.com>2016-10-07 16:42:27 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-10-24 17:07:30 +0300
commit224e2c977b647d1ae72bf1d8e3424cd3e5e83f0c (patch)
tree86b6da066235060e091c1236ae9f834d3c5bea48 /tools/perf/Documentation/perf-script.txt
parentfaaa87680b25d9ec91a308d4c957f5b9305c7b59 (diff)
downloadlinux-224e2c977b647d1ae72bf1d8e3424cd3e5e83f0c.tar.xz
perf script: Support insn and insnlen
When looking at Intel PT traces with perf script it is useful to have some indication of the instruction. Dump the instruction bytes and instruction length, which can be used for simple pattern analysis in scripts. % perf record -e intel_pt// foo % perf script --itrace=i0ns -F ip,insn,insnlen ffffffff8101232f ilen: 5 insn: 0f 1f 44 00 00 ffffffff81012334 ilen: 1 insn: 5b ffffffff81012335 ilen: 1 insn: 5d ffffffff81012336 ilen: 1 insn: c3 ffffffff810123e3 ilen: 1 insn: 5b ffffffff810123e4 ilen: 2 insn: 41 5c ffffffff810123e6 ilen: 1 insn: 5d ffffffff810123e7 ilen: 1 insn: c3 ffffffff810124a6 ilen: 2 insn: 31 c0 ffffffff810124a8 ilen: 9 insn: 41 83 bc 24 a8 01 00 00 01 ffffffff810124b1 ilen: 2 insn: 75 87 ... Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/1475847747-30994-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-script.txt')
-rw-r--r--tools/perf/Documentation/perf-script.txt6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 053bbbd84ece..c01904f388ce 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -117,7 +117,7 @@ OPTIONS
Comma separated list of fields to print. Options are:
comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff,
srcline, period, iregs, brstack, brstacksym, flags, bpf-output,
- callindent. Field list can be prepended with the type, trace, sw or hw,
+ callindent, insn, insnlen. Field list can be prepended with the type, trace, sw or hw,
to indicate to which event type the field list applies.
e.g., -F sw:comm,tid,time,ip,sym and -F trace:time,cpu,trace
@@ -181,6 +181,10 @@ OPTIONS
Instruction Trace decoding. For calls and returns, it will display the
name of the symbol indented with spaces to reflect the stack depth.
+ When doing instruction trace decoding insn and insnlen give the
+ instruction bytes and the instruction length of the current
+ instruction.
+
Finally, a user may not set fields to none for all event types.
i.e., -F "" is not allowed.