timers: Simplify calc_index()

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The level granularity round up of calc_index() does:

   (x + (1 << n)) >> n

which is obviously equivalent to

   (x >> n) + 1

but compilers can't figure that out despite the fact that the input range
is known to not cause an overflow. It's neither intuitive to read.

Just write out the obvious.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/87h778j46c.ffs@tglx

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Thomas Gleixner 2022-04-04 16:47:55 +02:00

parent 2731aa7d65

commit a2026e44ef

1 changed files with 1 additions and 1 deletions

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kernel/time/timer.c

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