Messages in this thread Patch in this message | | | From | Masami Hiramatsu <> | Subject | [PATCH v2 4/4] perf-probe: Ignore vmlinux Build-id when offline vmlinux given | Date | Fri, 26 Aug 2016 23:57:58 +0900 |
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Ignore vmlinux build-id when user gives offline vmlinux if the command does not affect running kernel. perf-probe has several actions some of them does not change the running kernel, like --lines, --vars, and --funcs.
e.g. ----- $ ./perf probe -k ./vmlinux-arm -V do_sys_open:14 Available variables at do_sys_open:14 @<do_sys_open+202> char* filename int dfd int fd int flags struct filename* tmp struct open_flags op umode_t mode -----
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> --- tools/perf/builtin-probe.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index b4220cd..f87996b 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -611,6 +611,14 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) */ symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); + /* + * Except for --list, --del and --add, other command doesn't depend + * nor change running kernel. So if user gives offline vmlinux, + * ignore its buildid. + */ + if (!strchr("lda", params.command) && symbol_conf.vmlinux_name) + symbol_conf.ignore_vmlinux_buildid = true; + switch (params.command) { case 'l': if (params.uprobes) { @@ -655,13 +663,6 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) } break; case 'D': - /* - * If user gives offline vmlinux, ignore buildid, since - * --definition doesn't change running kernel. - */ - if (symbol_conf.vmlinux_name) - symbol_conf.ignore_vmlinux_buildid = true; - /* fall through */ case 'a': /* Ensure the last given target is used */
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