From: Adrian Hunter Date: Thu, 11 Aug 2022 17:04:09 +0000 (+0300) Subject: perf script: Fix missing guest option documentation X-Git-Tag: v6.1-rc5~594^2~53 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=696d0a4cb8009af7bb3b45dc4d94679a7c9a2318;p=platform%2Fkernel%2Flinux-starfive.git 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 Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20220811170411.84154-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index 4c95e79e2c39..48ee42a891b6 100644 --- 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=:: + Guest OS root file system mount directory. Users mount guest OS + root directories under 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=:: + Guest OS /proc/kallsyms file copy. perf reads it to get guest + kernel symbols. Users copy it out from guest OS. + +--guestmodules=:: + Guest OS /proc/modules file copy. perf reads it to get guest + kernel module information. Users copy it out from guest OS. + +--guestvmlinux=:: + Guest OS kernel vmlinux. + --switch-on EVENT_NAME:: Only consider events after this event is found.