x86/aperfmperf: Untangle Intel and AMD frequency invariance init

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AMD boot CPU initialization happens late via ACPI/CPPC which prevents the
Intel parts from being marked __init.

Split out the common code and provide a dedicated interface for the AMD
initialization and mark the Intel specific code and data __init.

The remaining text size is almost cut in half:

  text:		2614	->	1350
  init.text:	   0	->	 786

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20220415161206.592465719@linutronix.de

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This commit is contained in:

Thomas Gleixner 2022-04-15 21:19:54 +02:00

parent 138a7f9c6b

commit 0dfaf3f6ec

4 changed files with 51 additions and 56 deletions

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13

arch/x86/include/asm/topology.h

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32

arch/x86/kernel/acpi/cppc.c

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62

arch/x86/kernel/cpu/aperfmperf.c

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2

arch/x86/kernel/smpboot.c

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