Commit 5b208144 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf script: Add guest_code support 



Add an option to indicate that guest code can be found in the hypervisor
process.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/20220517131011.6117-5-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 096fc361

tools/perf/Documentation/perf-script.txt

+4 −0
Original line number Diff line number Diff line
@@ -499,6 +499,10 @@ include::itrace.txt[] 
	The known limitations include exception handing such as

	setjmp/longjmp will have calls/returns not match.



--guest-code::

	Indicate that guest code can be found in the hypervisor process,

	which is a common case for KVM test programs.



SEE ALSO

--------

linkperf:perf-record[1], linkperf:perf-script-perl[1],

tools/perf/builtin-script.c

+4 −1
Original line number Diff line number Diff line
@@ -3912,6 +3912,8 @@ int cmd_script(int argc, const char **argv) 
		   "file", "file saving guest os /proc/kallsyms"),

	OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules,

		   "file", "file saving guest os /proc/modules"),

	OPT_BOOLEAN(0, "guest-code", &symbol_conf.guest_code,

		    "Guest code can be found in hypervisor process"),

	OPT_BOOLEAN('\0', "stitch-lbr", &script.stitch_lbr,

		    "Enable LBR callgraph stitching approach"),

	OPTS_EVSWITCH(&script.evswitch),
@@ -3937,7 +3939,8 @@ int cmd_script(int argc, const char **argv) 
	if (symbol_conf.guestmount ||

	    symbol_conf.default_guest_vmlinux_name ||

	    symbol_conf.default_guest_kallsyms ||

	    symbol_conf.default_guest_modules) {

	    symbol_conf.default_guest_modules ||

	    symbol_conf.guest_code) {

		/*

		 * Enable guest sample processing.

		 */