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x86/resctrl: Remove redundant assignment to variable chunks

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The variable chunks is being shifted right and re-assinged the shifted
value which is then returned. Since chunks is not being read afterwards
the assignment is redundant and the >>= operator can be replaced with a
shift >> operator instead.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Link: https://lkml.kernel.org/r/20211207223735.35173-1-colin.i.king@gmail.com
This commit is contained in:
Colin Ian King 2021-12-07 22:37:35 +00:00 • committed by Dave Hansen
parent 0fcfb00b28
commit df0114f1f8
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/cpu/resctrl/monitor.c
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@ -282,7 +282,7 @@ static u64 mbm_overflow_count(u64 prev_msr, u64 cur_msr, unsigned int width)
u64 shift = 64 - width, chunks;
chunks = (cur_msr << shift) - (prev_msr << shift);
return chunks >>= shift;
return chunks >> shift;
}
static u64 __mon_event_count(u32 rmid, struct rmid_read *rr)