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authorH. Peter Anvin <hpa@zytor.com>2008-05-02 16:18:42 -0700
committerH. Peter Anvin <hpa@zytor.com>2008-05-02 16:18:42 -0700
commitb9095fd8a7f41dc7ac0b0b7864f74766a3056f96 (patch)
tree85653322dfb5b0c2faef3973d9d480d8117e4454 /kernel/time.c
parentc25bd29805f4d854c3a0b4176813f3c1bff569d3 (diff)
downloadop-kernel-dev-b9095fd8a7f41dc7ac0b0b7864f74766a3056f96.zip
op-kernel-dev-b9095fd8a7f41dc7ac0b0b7864f74766a3056f96.tar.gz
Make constants in kernel/timeconst.h fixed 64 bits
Force constants in kernel/timeconst.h (except shift counts) to be 64 bits, using U64_C() constructor macros, and eliminate constants that cannot be represented at all in 64 bits. This avoids warnings with some gcc versions. Drop generating 64-bit constants, since we have no real hope of getting a full set (operation on 64-bit values requires a 128-bit intermediate result, which gcc only supports on 64-bit platforms, and only with libgcc support on some.) Note that the use of these constants does not depend on if we are on a 32- or 64-bit architecture. This resolves Bugzilla 10153. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'kernel/time.c')
-rw-r--r--kernel/time.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/time.c b/kernel/time.c
index cbe0d5a..6a08660 100644
--- a/kernel/time.c
+++ b/kernel/time.c
@@ -246,7 +246,7 @@ unsigned int inline jiffies_to_msecs(const unsigned long j)
return (j + (HZ / MSEC_PER_SEC) - 1)/(HZ / MSEC_PER_SEC);
#else
# if BITS_PER_LONG == 32
- return ((u64)HZ_TO_MSEC_MUL32 * j) >> HZ_TO_MSEC_SHR32;
+ return (HZ_TO_MSEC_MUL32 * j) >> HZ_TO_MSEC_SHR32;
# else
return (j * HZ_TO_MSEC_NUM) / HZ_TO_MSEC_DEN;
# endif
@@ -262,7 +262,7 @@ unsigned int inline jiffies_to_usecs(const unsigned long j)
return (j + (HZ / USEC_PER_SEC) - 1)/(HZ / USEC_PER_SEC);
#else
# if BITS_PER_LONG == 32
- return ((u64)HZ_TO_USEC_MUL32 * j) >> HZ_TO_USEC_SHR32;
+ return (HZ_TO_USEC_MUL32 * j) >> HZ_TO_USEC_SHR32;
# else
return (j * HZ_TO_USEC_NUM) / HZ_TO_USEC_DEN;
# endif
@@ -476,7 +476,7 @@ unsigned long msecs_to_jiffies(const unsigned int m)
if (HZ > MSEC_PER_SEC && m > jiffies_to_msecs(MAX_JIFFY_OFFSET))
return MAX_JIFFY_OFFSET;
- return ((u64)MSEC_TO_HZ_MUL32 * m + MSEC_TO_HZ_ADJ32)
+ return (MSEC_TO_HZ_MUL32 * m + MSEC_TO_HZ_ADJ32)
>> MSEC_TO_HZ_SHR32;
#endif
}
@@ -491,7 +491,7 @@ unsigned long usecs_to_jiffies(const unsigned int u)
#elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC)
return u * (HZ / USEC_PER_SEC);
#else
- return ((u64)USEC_TO_HZ_MUL32 * u + USEC_TO_HZ_ADJ32)
+ return (USEC_TO_HZ_MUL32 * u + USEC_TO_HZ_ADJ32)
>> USEC_TO_HZ_SHR32;
#endif
}
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