From: Ingo Molnar <mingo@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Borislav Petkov <bp@alien8.de>
Subject: [PATCH 2/3] x86/tsc: Remove unused "US_SCALE" and "NS_SCALE" leftover macros
Date: Fri, 24 Jul 2020 13:44:17 +0200 [thread overview]
Message-ID: <20200724114418.629021-3-mingo@kernel.org> (raw)
In-Reply-To: <20200724114418.629021-1-mingo@kernel.org>
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@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.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 8a0c25c6bf09..b7b2624fba86 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.
*/
--
2.25.1
next prev parent reply other threads:[~2020-07-24 11:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-24 11:44 [PATCH 0/3] x86 cleanups of leftover code Ingo Molnar
2020-07-24 11:44 ` [PATCH 1/3] x86/ioapic: Remove unused "IOAPIC_AUTO" define Ingo Molnar
2020-07-25 10:13 ` [tip: x86/cleanups] " tip-bot2 for Ingo Molnar
2020-07-24 11:44 ` Ingo Molnar [this message]
2020-07-25 10:13 ` [tip: x86/cleanups] x86/tsc: Remove unused "US_SCALE" and "NS_SCALE" leftover macros tip-bot2 for Ingo Molnar
2020-07-24 11:44 ` [PATCH 3/3] x86/mm: Remove the unused mk_kernel_pgd() #define Ingo Molnar
2020-07-25 10:13 ` [tip: x86/cleanups] " tip-bot2 for Ingo Molnar
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