Merge tag 'linux-cpupower-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux

Pull cpupower utility update for v5.11-rc1 from Shuah Khan:

"This consists of a change to provide online and offline CPU information.
 This change makes it easier to keep track of offline cpus whose cpuidle
 or cpufreq property aren't changed when updates are made to online cpus."

* tag 'linux-cpupower-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux:
  cpupower: Provide online and offline CPU information

1 files changed, 65 insertions, 1 deletions

diff --git a/tools/power/cpupower/utils/helpers/misc.c b/tools/power/cpupower/utils/helpers/misc.c
index f406adc40bad..2ead98169cf5 100644
--- a/tools/power/cpupower/utils/helpers/misc.c
+++ b/tools/power/cpupower/utils/helpers/misc.c
@@ -1,8 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
-#if defined(__i386__) || defined(__x86_64__)
+
+#include <stdio.h>
+#include <stdlib.h>
 
 #include "helpers/helpers.h"
 
+#if defined(__i386__) || defined(__x86_64__)
+
 #define MSR_AMD_HWCR	0xc0010015
 
 int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active,
@@ -41,3 +45,63 @@ int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active,
 	return 0;
 }
 #endif /* #if defined(__i386__) || defined(__x86_64__) */
+
+/* get_cpustate
+ *
+ * Gather the information of all online CPUs into bitmask struct
+ */
+void get_cpustate(void)
+{
+	unsigned int cpu = 0;
+
+	bitmask_clearall(online_cpus);
+	bitmask_clearall(offline_cpus);
+
+	for (cpu = bitmask_first(cpus_chosen);
+		cpu <= bitmask_last(cpus_chosen); cpu++) {
+
+		if (cpupower_is_cpu_online(cpu) == 1)
+			bitmask_setbit(online_cpus, cpu);
+		else
+			bitmask_setbit(offline_cpus, cpu);
+
+		continue;
+	}
+}
+
+/* print_online_cpus
+ *
+ * Print the CPU numbers of all CPUs that are online currently
+ */
+void print_online_cpus(void)
+{
+	int str_len = 0;
+	char *online_cpus_str = NULL;
+
+	str_len = online_cpus->size * 5;
+	online_cpus_str = (void *)malloc(sizeof(char) * str_len);
+
+	if (!bitmask_isallclear(online_cpus)) {
+		bitmask_displaylist(online_cpus_str, str_len, online_cpus);
+		printf(_("Following CPUs are online:\n%s\n"), online_cpus_str);
+	}
+}
+
+/* print_offline_cpus
+ *
+ * Print the CPU numbers of all CPUs that are offline currently
+ */
+void print_offline_cpus(void)
+{
+	int str_len = 0;
+	char *offline_cpus_str = NULL;
+
+	str_len = offline_cpus->size * 5;
+	offline_cpus_str = (void *)malloc(sizeof(char) * str_len);
+
+	if (!bitmask_isallclear(offline_cpus)) {
+		bitmask_displaylist(offline_cpus_str, str_len, offline_cpus);
+		printf(_("Following CPUs are offline:\n%s\n"), offline_cpus_str);
+		printf(_("cpupower set operation was not performed on them\n"));
+	}
+}