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| author | David Woodhouse <dwmw2@infradead.org> | 2006-07-05 11:24:26 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-05 09:39:54 -0700 |
| commit | a8e0c51c71fc973b400f6502382063553b82af5a (patch) | |
| tree | 72312c480c89289a885f907248a6a0ef8e1b0bb2 /include | |
| parent | ba1826e5eced176cc9ec0033ad8ee0f1cd5ad2e4 (diff) | |
| download | lwn-a8e0c51c71fc973b400f6502382063553b82af5a.tar.gz lwn-a8e0c51c71fc973b400f6502382063553b82af5a.zip | |
[PATCH] powerpc: implement missing jiffies64_to_cputime64()
asm-powerpc/cputime.h doesn't declare jiffies64_to_cputime64() or
cputime64_sub(), and due to CONFIG_VIRT_CPU_ACCOUNTING it's not picking
up the definition from asm-generic like x86-64 & friends do.
Cc: Dave Jones <davej@redhat.com>
Cc: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-powerpc/cputime.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/asm-powerpc/cputime.h b/include/asm-powerpc/cputime.h index a21185d47883..310804485208 100644 --- a/include/asm-powerpc/cputime.h +++ b/include/asm-powerpc/cputime.h @@ -43,6 +43,7 @@ typedef u64 cputime64_t; #define cputime64_zero ((cputime64_t)0) #define cputime64_add(__a, __b) ((__a) + (__b)) +#define cputime64_sub(__a, __b) ((__a) - (__b)) #define cputime_to_cputime64(__ct) (__ct) #ifdef __KERNEL__ @@ -74,6 +75,23 @@ static inline cputime_t jiffies_to_cputime(const unsigned long jif) return ct; } +static inline cputime64_t jiffies64_to_cputime64(const u64 jif) +{ + cputime_t ct; + u64 sec; + + /* have to be a little careful about overflow */ + ct = jif % HZ; + sec = jif / HZ; + if (ct) { + ct *= tb_ticks_per_sec; + do_div(ct, HZ); + } + if (sec) + ct += (cputime_t) sec * tb_ticks_per_sec; + return ct; +} + static inline u64 cputime64_to_jiffies64(const cputime_t ct) { return mulhdu(ct, __cputime_jiffies_factor); |