From: Karel Zak <kzak@redhat.com>
Date: Thu, 3 Sep 2020 14:31:59 +0000 (+0200)
Subject: lscpu: add functions to get CPU freq
X-Git-Tag: v2.37-rc1~320
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6d5699e6b567ad83a0fd16c9b44864ec24f24c28;p=thirdparty%2Futil-linux.git

lscpu: add functions to get CPU freq

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/sys-utils/lscpu-topology.c b/sys-utils/lscpu-topology.c
index d6cef7d20f..8f948b48ce 100644
--- a/sys-utils/lscpu-topology.c
+++ b/sys-utils/lscpu-topology.c
@@ -436,9 +436,44 @@ static int read_mhz(struct lscpu_cxt *cxt, struct lscpu_cpu *cpu)
 		cpu->mhz_max_freq = (float) mhz / 1000;
 	if (ul_path_readf_s32(sys, &mhz, "cpu%d/cpufreq/cpuinfo_min_freq", num) == 0)
 		cpu->mhz_min_freq = (float) mhz / 1000;
+
+	if (cpu->type && (cpu->mhz_min_freq || cpu->mhz_max_freq))
+		cpu->type->has_freq = 1;
+
 	return 0;
 }
 
+float lsblk_cputype_get_maxmhz(struct lscpu_cxt *cxt, struct lscpu_cputype *ct)
+{
+	size_t i;
+	float res = 0.0;
+
+	for (i = 0; i < cxt->npossibles; i++) {
+		struct lscpu_cpu *cpu = cxt->cpus[i];
+
+		if (!cpu || cpu->type != ct || !is_cpu_present(cxt, cpu))
+			continue;
+		res = max(res, cpu->mhz_max_freq);
+	}
+	return res;
+}
+
+float lsblk_cputype_get_minmhz(struct lscpu_cxt *cxt, struct lscpu_cputype *ct)
+{
+	size_t i;
+	float res = -1.0;
+
+	for (i = 0; i < cxt->npossibles; i++) {
+		struct lscpu_cpu *cpu = cxt->cpus[i];
+
+		if (!cpu || cpu->type != ct || !is_cpu_present(cxt, cpu))
+			continue;
+		if (res < 0.0 || cpu->mhz_min_freq < res)
+			res = cpu->mhz_min_freq;
+	}
+	return res;
+}
+
 int lscpu_read_topology(struct lscpu_cxt *cxt)
 {
 	size_t i;
diff --git a/sys-utils/lscpu.h b/sys-utils/lscpu.h
index 2ea5cfc551..011444e2f7 100644
--- a/sys-utils/lscpu.h
+++ b/sys-utils/lscpu.h
@@ -90,6 +90,8 @@ struct lscpu_cputype {
 	cpu_set_t	**bookmaps;
 	size_t		ndrawers;
 	cpu_set_t	**drawermaps;
+
+	unsigned int	has_freq;
 };
 
 /* dispatching modes */
@@ -258,6 +260,9 @@ void lscpu_sort_caches(struct lscpu_cache *caches, size_t n);
 int lscpu_read_topology(struct lscpu_cxt *cxt);
 void lscpu_cputype_free_topology(struct lscpu_cputype *ct);
 
+float lsblk_cputype_get_maxmhz(struct lscpu_cxt *cxt, struct lscpu_cputype *ct);
+float lsblk_cputype_get_minmhz(struct lscpu_cxt *cxt, struct lscpu_cputype *ct);
+
 size_t lscpu_get_cache_full_size(struct lscpu_cxt *cxt, const char *name);
 
 struct lscpu_arch *lscpu_read_architecture(struct lscpu_cxt *cxt);