linux-kernel - [PATCH] tools/power turbostat: print power values upto three decimal

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Date:   Thu, 30 Sep 2021 18:40:18 +0530
From:   Sumeet Pawnikar <sumeet.r.pawnikar@...el.com>
To:     lenb@...nel.org, tony.luck@...el.com, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     sumeet.r.pawnikar@...el.com
Subject: [PATCH] tools/power turbostat: print power values upto three decimal

Print power values upto three decimal places in watts.

Suggested-by: Tony Luck <tony.luck@...el.com>
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@...el.com>
---
 tools/power/x86/turbostat/turbostat.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 47d3ba895d6d..26f640f61010 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -4698,7 +4698,7 @@ int print_thermal(struct thread_data *t, struct core_data *c, struct pkg_data *p
 
 void print_power_limit_msr(int cpu, unsigned long long msr, char *label)
 {
-	fprintf(outf, "cpu%d: %s: %sabled (%f Watts, %f sec, clamp %sabled)\n",
+	fprintf(outf, "cpu%d: %s: %sabled (%0.3f Watts, %f sec, clamp %sabled)\n",
 		cpu, label,
 		((msr >> 15) & 1) ? "EN" : "DIS",
 		((msr >> 0) & 0x7FFF) * rapl_power_units,
@@ -4762,7 +4762,7 @@ int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p)
 			cpu, msr, (msr >> 63) & 1 ? "" : "UN");
 
 		print_power_limit_msr(cpu, msr, "PKG Limit #1");
-		fprintf(outf, "cpu%d: PKG Limit #2: %sabled (%f Watts, %f* sec, clamp %sabled)\n",
+		fprintf(outf, "cpu%d: PKG Limit #2: %sabled (%0.3f Watts, %f* sec, clamp %sabled)\n",
 			cpu,
 			((msr >> 47) & 1) ? "EN" : "DIS",
 			((msr >> 32) & 0x7FFF) * rapl_power_units,
-- 
2.17.1