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LoongArch: Remove MIPS comment about cycle counter

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This comment block was taken originally from the MIPS architecture code,
where indeed there are particular assumptions one can make regarding SMP
and !SMP and cycle counters. On LoongArch, however, the rdtime family of
functions is always available. As Xuerui wrote:

    The rdtime family of instructions is in fact guaranteed to be
    available on LoongArch; LoongArch's subsets all contain them, even
    the 32-bit "Primary" subset intended for university teaching -- they
    provide the rdtimeh.w and rdtimel.w pair of instructions that access
    the same 64-bit counter.

So this commit simply removes the incorrect comment block.

Link: https://lore.kernel.org/lkml/e78940bc-9be2-2fe7-026f-9e64a1416c9f@xen0n.name/
Fixes: b738c106f735 ("LoongArch: Add other common headers")
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Jason A. Donenfeld 2022-06-05 16:20:08 +08:00 committed by Huacai Chen
parent 0626e1c9f3
commit 5c95fe8b02
1 changed files with 0 additions and 7 deletions
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7
arch/loongarch/include/asm/timex.h
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@ -12,13 +12,6 @@
#include <asm/cpu.h>
#include <asm/cpu-features.h>
/*
* Standard way to access the cycle counter.
* Currently only used on SMP for scheduling.
*
* We know that all SMP capable CPUs have cycle counters.
*/
typedef unsigned long cycles_t;
#define get_cycles get_cycles