From: Kan Liang <kan.li...@linux.intel.com> The available registers for --int-regs and --user-regs may be different, e.g. XMM registers.
Split parse_regs into two dedicated functions for --int-regs and --user-regs respectively. Modify the warning message. "--user-regs=?" should be applied to show the available registers for --user-regs. Signed-off-by: Kan Liang <kan.li...@linux.intel.com> Tested-by: Ravi Bangoria <ravi.bango...@linux.ibm.com> Cc: Andi Kleen <a...@linux.intel.com> Cc: Jiri Olsa <jo...@kernel.org> Link: http://lkml.kernel.org/r/1557865174-56264-1-git-send-email-kan.li...@linux.intel.com [ Changed docs as suggested by Ravi and agreed by Kan ] Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/Documentation/perf-record.txt | 3 ++- tools/perf/builtin-record.c | 4 ++-- tools/perf/util/parse-regs-options.c | 19 ++++++++++++++++--- tools/perf/util/parse-regs-options.h | 3 ++- 4 files changed, 22 insertions(+), 7 deletions(-) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 27b37624c376..de269430720a 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -406,7 +406,8 @@ symbolic names, e.g. on x86, ax, si. To list the available registers use --intr-regs=ax,bx. The list of register is architecture dependent. --user-regs:: -Capture user registers at sample time. Same arguments as -I. +Similar to -I, but capture user registers at sample time. To list the available +user registers use --user-regs=\?. --running-time:: Record running and enabled time for read events (:S) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 861395753c25..e2c3a585a61e 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -2168,10 +2168,10 @@ static struct option __record_options[] = { "use per-thread mmaps"), OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", "sample selected machine registers on interrupt," - " use '-I?' to list register names", parse_regs), + " use '-I?' to list register names", parse_intr_regs), OPT_CALLBACK_OPTARG(0, "user-regs", &record.opts.sample_user_regs, NULL, "any register", "sample selected machine registers on interrupt," - " use '-I?' to list register names", parse_regs), + " use '--user-regs=?' to list register names", parse_user_regs), OPT_BOOLEAN(0, "running-time", &record.opts.running_time, "Record running/enabled time of read (:S) events"), OPT_CALLBACK('k', "clockid", &record.opts, diff --git a/tools/perf/util/parse-regs-options.c b/tools/perf/util/parse-regs-options.c index 9cb187a20fe2..b21617f2bec1 100644 --- a/tools/perf/util/parse-regs-options.c +++ b/tools/perf/util/parse-regs-options.c @@ -5,8 +5,8 @@ #include <subcmd/parse-options.h> #include "util/parse-regs-options.h" -int -parse_regs(const struct option *opt, const char *str, int unset) +static int +__parse_regs(const struct option *opt, const char *str, int unset, bool intr) { uint64_t *mode = (uint64_t *)opt->value; const struct sample_reg *r; @@ -48,7 +48,8 @@ parse_regs(const struct option *opt, const char *str, int unset) break; } if (!r->name) { - ui__warning("Unknown register \"%s\", check man page or run \"perf record -I?\"\n", s); + ui__warning("Unknown register \"%s\", check man page or run \"perf record %s?\"\n", + s, intr ? "-I" : "--user-regs="); goto error; } @@ -69,3 +70,15 @@ parse_regs(const struct option *opt, const char *str, int unset) free(os); return ret; } + +int +parse_user_regs(const struct option *opt, const char *str, int unset) +{ + return __parse_regs(opt, str, unset, false); +} + +int +parse_intr_regs(const struct option *opt, const char *str, int unset) +{ + return __parse_regs(opt, str, unset, true); +} diff --git a/tools/perf/util/parse-regs-options.h b/tools/perf/util/parse-regs-options.h index cdefb1acf6be..2b23d25c6394 100644 --- a/tools/perf/util/parse-regs-options.h +++ b/tools/perf/util/parse-regs-options.h @@ -2,5 +2,6 @@ #ifndef _PERF_PARSE_REGS_OPTIONS_H #define _PERF_PARSE_REGS_OPTIONS_H 1 struct option; -int parse_regs(const struct option *opt, const char *str, int unset); +int parse_user_regs(const struct option *opt, const char *str, int unset); +int parse_intr_regs(const struct option *opt, const char *str, int unset); #endif /* _PERF_PARSE_REGS_OPTIONS_H */ -- 2.20.1
