linux-kernel - [PATCH 4/8] perf config: Introduce perf_config

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Date:   Thu, 13 Feb 2020 12:13:02 +0530
From:   Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
To:     acme@...nel.org, jolsa@...hat.com
Cc:     xieyisheng1@...wei.com, alexey.budankov@...ux.intel.com,
        treeze.taeung@...il.com, adrian.hunter@...el.com,
        tmricht@...ux.ibm.com, namhyung@...nel.org, irogers@...gle.com,
        songliubraving@...com, yao.jin@...ux.intel.com,
        changbin.du@...el.com, leo.yan@...aro.org,
        linux-kernel@...r.kernel.org,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Subject: [PATCH 4/8] perf config: Introduce perf_config_u8()

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>
---
 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 *);
-- 
2.24.1