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-rw-r--r--kernel/tools/perf/Documentation/perf-script.txt45
1 files changed, 43 insertions, 2 deletions
diff --git a/kernel/tools/perf/Documentation/perf-script.txt b/kernel/tools/perf/Documentation/perf-script.txt
index 79445750f..382ddfb45 100644
--- a/kernel/tools/perf/Documentation/perf-script.txt
+++ b/kernel/tools/perf/Documentation/perf-script.txt
@@ -112,10 +112,11 @@ OPTIONS
--debug-mode::
Do various checks like samples ordering and lost events.
--f::
+-F::
--fields::
Comma separated list of fields to print. Options are:
- comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff, srcline, period.
+ comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff,
+ srcline, period, iregs, brstack, brstacksym, flags.
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
@@ -165,9 +166,25 @@ OPTIONS
At this point usage is displayed, and perf-script exits.
+ The flags field is synthesized and may have a value when Instruction
+ Trace decoding. The flags are "bcrosyiABEx" which stand for branch,
+ call, return, conditional, system, asynchronous, interrupt,
+ transaction abort, trace begin, trace end, and in transaction,
+ respectively.
+
Finally, a user may not set fields to none for all event types.
i.e., -f "" is not allowed.
+ The brstack output includes branch related information with raw addresses using the
+ /v/v/v/v/ syntax in the following order:
+ FROM: branch source instruction
+ TO : branch target instruction
+ M/P/-: M=branch target mispredicted or branch direction was mispredicted, P=target predicted or direction predicted, -=not supported
+ X/- : X=branch inside a transactional region, -=not in transaction region or not supported
+ A/- : A=TSX abort entry, -=not aborted region or not supported
+
+ The brstacksym is identical to brstack, except that the FROM and TO addresses are printed in a symbolic form if possible.
+
-k::
--vmlinux=<file>::
vmlinux pathname
@@ -215,12 +232,36 @@ OPTIONS
--show-mmap-events
Display mmap related events (e.g. MMAP, MMAP2).
+--show-switch-events
+ Display context switch events i.e. events of type PERF_RECORD_SWITCH or
+ PERF_RECORD_SWITCH_CPU_WIDE.
+
+--demangle::
+ Demangle symbol names to human readable form. It's enabled by default,
+ disable with --no-demangle.
+
+--demangle-kernel::
+ Demangle kernel symbol names to human readable form (for C++ kernels).
+
--header
Show perf.data header.
--header-only
Show only perf.data header.
+--itrace::
+ Options for decoding instruction tracing data. The options are:
+
+include::itrace.txt[]
+
+ To disable decoding entirely, use --no-itrace.
+
+--full-source-path::
+ Show the full path for source files for srcline output.
+
+--ns::
+ Use 9 decimal places when displaying time (i.e. show the nanoseconds)
+
SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-script-perl[1],