linux-kernel - [PATCH 06/15] perf config: Introduce perf_config

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Date:   Fri, 28 Feb 2020 11:00:05 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Changbin Du <changbin.du@...el.com>,
        Ian Rogers <irogers@...gle.com>,
        Jin Yao <yao.jin@...ux.intel.com>,
        Leo Yan <leo.yan@...aro.org>, Song Liu <songliubraving@...com>,
        Taeung Song <treeze.taeung@...il.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        Yisheng Xie <xieyisheng1@...wei.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 06/15] perf config: Introduce perf_config_u8()

From: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>

Introduce perf_config_u8() utility function to convert char * input into
u8 destination. We will utilize it in followup patch.

Signed-off-by: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Alexey Budankov <alexey.budankov@...ux.intel.com>
Cc: Changbin Du <changbin.du@...el.com>
Cc: Ian Rogers <irogers@...gle.com>
Cc: Jin Yao <yao.jin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Leo Yan <leo.yan@...aro.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Song Liu <songliubraving@...com>
Cc: Taeung Song <treeze.taeung@...il.com>
Cc: Thomas Richter <tmricht@...ux.ibm.com>
Cc: Yisheng Xie <xieyisheng1@...wei.com>
Link: http://lore.kernel.org/lkml/20200213064306.160480-5-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/config.c | 12 ++++++++++++
 tools/perf/util/config.h |  1 +
 2 files changed, 13 insertions(+)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 0bc9c4d7fdc5..ef38eba56ed0 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -374,6 +374,18 @@ int perf_config_int(int *dest, const char *name, const char *value)
 	return 0;
 }
 
+int perf_config_u8(u8 *dest, const char *name, const char *value)
+{
+	long ret = 0;
+
+	if (!perf_parse_long(value, &ret)) {
+		bad_config(name);
+		return -1;
+	}
+	*dest = ret;
+	return 0;
+}
+
 static int perf_config_bool_or_int(const char *name, const char *value, int *is_bool)
 {
 	int ret;
diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
index bd0a5897c76a..c10b66dde2f3 100644
--- a/tools/perf/util/config.h
+++ b/tools/perf/util/config.h
@@ -29,6 +29,7 @@ typedef int (*config_fn_t)(const char *, const char *, void *);
 int perf_default_config(const char *, const char *, void *);
 int perf_config(config_fn_t fn, void *);
 int perf_config_int(int *dest, const char *, const char *);
+int perf_config_u8(u8 *dest, const char *name, const char *value);
 int perf_config_u64(u64 *dest, const char *, const char *);
 int perf_config_bool(const char *, const char *);
 int config_error_nonbool(const char *);
-- 
2.21.1