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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2024-06-12 10:54:28 +0200 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2024-07-03 16:44:49 +0200 |
| commit | c171186c177970d3ec22dd814f2693f1f7fc1e7d (patch) | |
| tree | 242fc8438c003e9a5358c607ea963d538f97600e | |
| parent | mips: bmips: enable RAC on BMIPS4350 (diff) | |
| download | linux-c171186c177970d3ec22dd814f2693f1f7fc1e7d.tar.xz linux-c171186c177970d3ec22dd814f2693f1f7fc1e7d.zip | |
MIPS: csrc-r4k: Refine rating computation
Increase frequency addend dividend to 10000000 (10MHz) to
reasonably accommodate multi GHz level mips_hpt_frequency.
Cap rating of csrc-r4k into 299 to ensure it doesn't go into
"Desired" range, given all the drama we have with CP0 count
registers (SMP sync, behaviour on wait etc).
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
| -rw-r--r-- | arch/mips/kernel/csrc-r4k.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c index edc4afc080fa..f02ae333f4f9 100644 --- a/arch/mips/kernel/csrc-r4k.c +++ b/arch/mips/kernel/csrc-r4k.c @@ -111,7 +111,8 @@ int __init init_r4k_clocksource(void) return -ENXIO; /* Calculate a somewhat reasonable rating value */ - clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000; + clocksource_mips.rating = 200; + clocksource_mips.rating += clamp(mips_hpt_frequency / 10000000, 0, 99); /* * R2 onwards makes the count accessible to user mode so it can be used |