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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>
hifive-unleashed-5.1
Prarit Bhargava 2015-10-22 09:43:31 -04:00 committed by Rafael J. Wysocki
parent 14f1ba3af6
commit 539342f60b
1 changed files with 6 additions and 4 deletions
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10
drivers/cpufreq/intel_pstate.c
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@ -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"))