linux-kernel - [PATCH 2/2] x86: intel_epb: Decrease ENERGY_PERF

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Date:   Tue, 17 Aug 2021 16:38:30 +0200
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>
Cc:     "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Paul Menzel <pmenzel@...gen.mpg.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] x86: intel_epb: Decrease ENERGY_PERF_BIAS warning to info log message

The warning

    ENERGY_PERF_BIAS: Set to 'normal', was 'performance' (unchanged by firmware)

is shown on all my Intel systems. As most users can not do anything
about it reduce the log level from warning to info.

Signed-off-by: Paul Menzel <pmenzel@...gen.mpg.de>
---
 arch/x86/kernel/cpu/intel_epb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/intel_epb.c b/arch/x86/kernel/cpu/intel_epb.c
index 3f8c0b59d08a..05acb2fd0298 100644
--- a/arch/x86/kernel/cpu/intel_epb.c
+++ b/arch/x86/kernel/cpu/intel_epb.c
@@ -91,7 +91,7 @@ static void intel_epb_restore(void)
 		val = epb & EPB_MASK;
 		if (val == ENERGY_PERF_BIAS_PERFORMANCE) {
 			val = ENERGY_PERF_BIAS_NORMAL;
-			pr_warn_once("ENERGY_PERF_BIAS: Set to 'normal', was 'performance' (unchanged by firmware)\n");
+			pr_info_once("ENERGY_PERF_BIAS: Set to 'normal', was 'performance' (unchanged by firmware)\n");
 		}
 	}
 	wrmsrl(MSR_IA32_ENERGY_PERF_BIAS, (epb & ~EPB_MASK) | val);
-- 
2.33.0