From: Petr Tesarik <ptesarik@suse.com>
To: Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Hans Peter Anvin <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
Juergen Gross <jgross@suse.com>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
Petr Tesarik <ptesarik@suse.com>
Subject: [PATCH 0/3] x86/tsc: Remove some magic constants
Date: Fri, 9 Oct 2026 12:04:33 +0200 [thread overview]
Message-ID: <20261009100436.1133518-1-ptesarik@suse.com> (raw)
The TSC code is full of various magic constants, making it difficult to
understand the calculations. This patch series tries to document their
actual meaning.
No functional change intended. In fact, the generated binary is
bit-for-bit identical after applying the series.
Petr Tesarik (3):
x86/tsc: Replace magic constants with xxx_PER_SEC
x86/tsc: Define and use HZ_PER_KHZ and KHZ_PER_MHZ
x86/tsc: Use TSC_CALIBRATE_MULT for the TSC multiplier
arch/x86/kernel/tsc.c | 54 ++++++++++++++++++++++---------------------
1 file changed, 28 insertions(+), 26 deletions(-)
--
2.55.0
next reply other threads:[~2026-10-09 10:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-09 10:04 Petr Tesarik [this message]
2026-10-09 10:04 ` [PATCH 1/3] x86/tsc: Replace magic constants with xxx_PER_SEC Petr Tesarik
2026-10-09 13:37 ` Thorsten Blum
2026-10-09 10:04 ` [PATCH 2/3] x86/tsc: Define and use HZ_PER_KHZ and KHZ_PER_MHZ Petr Tesarik
2026-10-09 13:42 ` Thorsten Blum
2026-10-09 10:04 ` [PATCH 3/3] x86/tsc: Use TSC_CALIBRATE_MULT for the TSC multiplier Petr Tesarik
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