linux-kernel - [tip: x86/cleanups] x86/tsc: Remove unused "US_SCALE" and "NS

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Message-ID: <159567202032.4006.6639431900725796846.tip-bot2@tip-bot2>
Date:   Sat, 25 Jul 2020 10:13:40 -0000
From:   "tip-bot2 for Ingo Molnar" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Ingo Molnar <mingo@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/cleanups] x86/tsc: Remove unused "US_SCALE" and "NS_SCALE"
 leftover macros

The following commit has been merged into the x86/cleanups branch of tip:

Commit-ID:     161449bad5053d66f2310744ba8498158ab12c89
Gitweb:        https://git.kernel.org/tip/161449bad5053d66f2310744ba8498158ab12c89
Author:        Ingo Molnar <mingo@...nel.org>
AuthorDate:    Fri, 24 Jul 2020 13:44:17 +02:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Sat, 25 Jul 2020 12:00:57 +02:00

x86/tsc: Remove unused "US_SCALE" and "NS_SCALE" leftover macros

Last use of them was removed 13 years ago, when the code was converted
to use CYC2NS_SCALE_FACTOR:

  53d517cdbaac: ("x86: scale cyc_2_nsec according to CPU frequency")

The current TSC code uses the 'struct cyc2ns_data' scaling abstraction,
the old fixed scaling approach is long gone.

This cleanup also removes the 'arbitralrily' typo from the comment,
so win-win. ;-)

Signed-off-by: Ingo Molnar <mingo@...nel.org>
Link: https://lore.kernel.org/r/20200724114418.629021-3-mingo@kernel.org
---
 arch/x86/include/asm/tsc.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h
index 8a0c25c..b7b2624 100644
--- a/arch/x86/include/asm/tsc.h
+++ b/arch/x86/include/asm/tsc.h
@@ -7,9 +7,6 @@
 
 #include <asm/processor.h>
 
-#define NS_SCALE	10 /* 2^10, carefully chosen */
-#define US_SCALE	32 /* 2^32, arbitralrily chosen */
-
 /*
  * Standard way to access the cycle counter.
  */