perf script: Fix missing guest option documentation

The 'perf script' documentation is missing several options relating to
guests.  Add them.

Fixes: 15a108af1a18b597 ("perf script: Allow specifying the files to process guest samples")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220811170411.84154-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 4c95e79e2c39374f37f9df7ea23a6c9122a9aa95..48ee42a891b66e40db1dac64a1066b7b2518e4d1 100644 (file)
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -487,6 +487,29 @@ include::itrace.txt[]
        For itrace only show specified functions and their callees for
        itrace. Multiple functions can be separated by comma.
 
+--guestmount=<path>::
+       Guest OS root file system mount directory. Users mount guest OS
+       root directories under <path> by a specific filesystem access method,
+       typically, sshfs.
+       For example, start 2 guest OS, one's pid is 8888 and the other's is 9999:
+[verse]
+       $ mkdir \~/guestmount
+       $ cd \~/guestmount
+       $ sshfs -o allow_other,direct_io -p 5551 localhost:/ 8888/
+       $ sshfs -o allow_other,direct_io -p 5552 localhost:/ 9999/
+       $ perf script --guestmount=~/guestmount
+
+--guestkallsyms=<path>::
+       Guest OS /proc/kallsyms file copy. perf reads it to get guest
+       kernel symbols. Users copy it out from guest OS.
+
+--guestmodules=<path>::
+       Guest OS /proc/modules file copy. perf reads it to get guest
+       kernel module information. Users copy it out from guest OS.
+
+--guestvmlinux=<path>::
+       Guest OS kernel vmlinux.
+
 --switch-on EVENT_NAME::
        Only consider events after this event is found.