From: Arnaldo Carvalho de Melo acme@redhat.com
mainline inclusion from mainline-v5.2-rc1 commit 4c1cf20334ae6e390e1ea787ef76c40a161370d1 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I47H3V CVE: NA
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commit 4c1cf20334ae6e390e1ea787ef76c40a161370d1 upstream.
Add quotes around the register name and suggest using 'perf record -I?' to get the list of available registers.
Before:
# perf record -Idi,xmm20,xmm1 Warning: unknown register xmm20, check man page
Usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>]
-I, --intr-regs[=<any register>] sample selected machine registers on interrupt, use -I ? to list register names # # perf record -Idi,xmm20,xmm1 Warning: unknown register "xmm20", check man page or run "perf record -I?"
Usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>]
-I, --intr-regs[=<any register>] sample selected machine registers on interrupt, use -I ? to list register names #
Cc: Adrian Hunter adrian.hunter@intel.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Andi Kleen ak@linux.intel.com Cc: Jiri Olsa jolsa@kernel.org Cc: Kan Liang kan.liang@linux.intel.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Stephane Eranian eranian@google.com Link: https://lkml.kernel.org/n/tip-9a9hyuum8c0oggg86xd3sxc5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Shen, Xiaochen xiaochen.shen@intel.com Signed-off-by: Jackie Liu liuyun01@kylinos.cn Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Reviewed-by: Yang Jihong yangjihong1@huawei.com Reviewed-by: Xie XiuQi xiexiuqi@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- tools/perf/util/parse-regs-options.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/tools/perf/util/parse-regs-options.c b/tools/perf/util/parse-regs-options.c index e6599e290f46..9cb187a20fe2 100644 --- a/tools/perf/util/parse-regs-options.c +++ b/tools/perf/util/parse-regs-options.c @@ -48,8 +48,7 @@ parse_regs(const struct option *opt, const char *str, int unset) break; } if (!r->name) { - ui__warning("unknown register %s," - " check man page\n", s); + ui__warning("Unknown register "%s", check man page or run "perf record -I?"\n", s); goto error; }