intel_pstate: decrease number of "HWP enabled" messages

When booting an HWP enabled system the kernel displays one "HWP enabled"
message for each cpu.  The messages are superfluous since HWP is globally
enabled across all CPUs. This patch also adds an informational message
when HWP is disabled via intel_pstate=no_hwp.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 93a3c635ea2741fa4296c013b564ec6a7c27b827..2e31d097def6b884262295e0d46d0faa6418bd81 100644 (file)
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -684,8 +684,6 @@ static void __init intel_pstate_sysfs_expose_params(void)
 
 static void intel_pstate_hwp_enable(struct cpudata *cpudata)
 {
-       pr_info("intel_pstate: HWP enabled\n");
-
        wrmsrl_on_cpu(cpudata->cpu, MSR_PM_ENABLE, 0x1);
 }
 
@@ -1557,8 +1555,10 @@ static int __init intel_pstate_init(void)
        if (!all_cpu_data)
                return -ENOMEM;
 
-       if (static_cpu_has_safe(X86_FEATURE_HWP) && !no_hwp)
+       if (static_cpu_has_safe(X86_FEATURE_HWP) && !no_hwp) {
+               pr_info("intel_pstate: HWP enabled\n");
                hwp_active++;
+       }
 
        if (!hwp_active && hwp_only)
                goto out;
@@ -1593,8 +1593,10 @@ static int __init intel_pstate_setup(char *str)
 
        if (!strcmp(str, "disable"))
                no_load = 1;
-       if (!strcmp(str, "no_hwp"))
+       if (!strcmp(str, "no_hwp")) {
+               pr_info("intel_pstate: HWP disabled\n");
                no_hwp = 1;
+       }
        if (!strcmp(str, "force"))
                force_load = 1;
        if (!strcmp(str, "hwp_only"))