drm/xe/gt_idle: Use NSEC_PER_MSEC instead of float literal

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The residency multiplier conversion in get_residency_ms() used the
floating-point literal 1e6 as the divisor of mul_u64_u32_div(). While
the compiler constant-folds this to an integer, using float literals
in kernel code is bad practice since the kernel generally avoids
floating-point operations.

Replace 1e6 with the standard NSEC_PER_MSEC macro from <linux/time64.h>,
which is both self-documenting (ns to ms conversion) and unambiguously
integer. Add the corresponding include rather than relying on
transitive inclusion.

No functional change.

Assisted-by: Claude:claude-opus-4.6
Reviewed-by: Nitin Gote <nitin.r.gote@intel.com>
Link: https://patch.msgid.link/20260511153307.223435-1-shuicheng.lin@intel.com
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>

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Shuicheng Lin 2026-05-11 15:33:07 +00:00

parent 71d61e3e29

commit 1d60990cdb

1 changed files with 3 additions and 1 deletions

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drivers/gpu/drm/xe/xe_gt_idle.c

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