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Message-ID: <20240422232040.1616527-2-sashal@kernel.org> Date: Mon, 22 Apr 2024 19:20:34 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Peng Liu <liupeng17@...ovo.com>, Len Brown <len.brown@...el.com>, Sasha Levin <sashal@...nel.org>, lenb@...nel.org, linux-pm@...r.kernel.org Subject: [PATCH AUTOSEL 4.19 2/7] tools/power turbostat: Fix Bzy_MHz documentation typo From: Peng Liu <liupeng17@...ovo.com> [ Upstream commit 0b13410b52c4636aacb6964a4253a797c0fa0d16 ] The code calculates Bzy_MHz by multiplying TSC_delta * APERF_delta/MPERF_delta The man page erroneously showed that TSC_delta was divided. Signed-off-by: Peng Liu <liupeng17@...ovo.com> Signed-off-by: Len Brown <len.brown@...el.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- tools/power/x86/turbostat/turbostat.8 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8 index a6db83a88e852..25a560c41321d 100644 --- a/tools/power/x86/turbostat/turbostat.8 +++ b/tools/power/x86/turbostat/turbostat.8 @@ -318,7 +318,7 @@ below the processor's base frequency. Busy% = MPERF_delta/TSC_delta -Bzy_MHz = TSC_delta/APERF_delta/MPERF_delta/measurement_interval +Bzy_MHz = TSC_delta*APERF_delta/MPERF_delta/measurement_interval Note that these calculations depend on TSC_delta, so they are not reliable during intervals when TSC_MHz is not running at the base frequency. -- 2.43.0
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