File cpupower-always_try_to_load_msr_driver_as_root.... of Package cpupower

Overview Repositories Revisions Requests Users Attributes Meta

File cpupower-always_try_to_load_msr_driver_as_root.patch of Package cpupower

cpupower: If root, try to load msr driver on x86 if /dev/cpu/0/msr is not avail

Signed-off-by: Thomas Renninger <trenn@suse.de>

diff --git a/utils/cpupower.c b/utils/cpupower.c
index 7efc570..7cdcf88 100644
--- a/utils/cpupower.c
+++ b/utils/cpupower.c
@@ -12,6 +12,9 @@
 #include <string.h>
 #include <unistd.h>
 #include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/utsname.h>
 
 #include "builtin.h"
 #include "helpers/helpers.h"
@@ -169,6 +172,8 @@ int main(int argc, const char *argv[])
 {
 	const char *cmd;
 	unsigned int i, ret;
+	struct stat statbuf;
+	struct utsname uts;
 
 	cpus_chosen = bitmask_alloc(sysconf(_SC_NPROCESSORS_CONF));
 
@@ -195,6 +200,15 @@ int main(int argc, const char *argv[])
 
 	get_cpu_info(0, &cpupower_cpu_info);
 	run_as_root = !getuid();
+	if (run_as_root) {
+		ret = uname(&uts);
+		if (!ret && !strcmp(uts.machine, "x86_64") &&
+		    stat("/dev/cpu/0/msr", &statbuf) != 0) {
+			if (system("modprobe msr") == -1)
+	fprintf(stderr, _("MSR access not available.\n"));
+		}
+	}
+		
 
 	for (i = 0; i < ARRAY_SIZE(commands); i++) {
 		struct cmd_struct *p = commands + i;

Places

File cpupower-always_try_to_load_msr_driver_as_root.patch of Package cpupower

Places