diff options
Diffstat (limited to 'linux-core/drm_compat.c')
| -rw-r--r-- | linux-core/drm_compat.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/linux-core/drm_compat.c b/linux-core/drm_compat.c index a745a7d9..cd4ff7df 100644 --- a/linux-core/drm_compat.c +++ b/linux-core/drm_compat.c @@ -729,3 +729,38 @@ void *idr_replace(struct idr *idp, void *ptr, int id) } EXPORT_SYMBOL(idr_replace); #endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) +static __inline__ unsigned long __round_jiffies(unsigned long j, int cpu) +{ + int rem; + unsigned long original = j; + + j += cpu * 3; + + rem = j % HZ; + + if (rem < HZ/4) /* round down */ + j = j - rem; + else /* round up */ + j = j - rem + HZ; + + /* now that we have rounded, subtract the extra skew again */ + j -= cpu * 3; + + if (j <= jiffies) /* rounding ate our timeout entirely; */ + return original; + return j; +} + +static __inline__ unsigned long __round_jiffies_relative(unsigned long j, int cpu) +{ + return __round_jiffies(j + jiffies, cpu) - jiffies; +} + +unsigned long round_jiffies_relative(unsigned long j) +{ + return __round_jiffies_relative(j, raw_smp_processor_id()); +} +EXPORT_SYMBOL(round_jiffies_relative); +#endif |