* [PATCH] implement get_cpu_clock() for s390/s390x
@ 2012-12-30 22:03 Dan Horák
2013-01-01 9:57 ` Jens Axboe
0 siblings, 1 reply; 2+ messages in thread
From: Dan Horák @ 2012-12-30 22:03 UTC (permalink / raw)
To: fio; +Cc: Dan Horák
---
arch/arch-s390.h | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/arch/arch-s390.h b/arch/arch-s390.h
index fe51791..bcd9163 100644
--- a/arch/arch-s390.h
+++ b/arch/arch-s390.h
@@ -22,4 +22,22 @@
#define read_barrier() asm volatile("bcr 15,0" : : : "memory")
#define write_barrier() asm volatile("bcr 15,0" : : : "memory")
+static inline unsigned long long get_cpu_clock(void)
+{
+ unsigned long long clk;
+
+ __asm__ __volatile__("stck %0" : "=Q" (clk) : : "cc");
+ return clk;
+}
+
+#define ARCH_HAVE_INIT
+extern int tsc_reliable;
+static inline int arch_init(char *envp[])
+{
+ tsc_reliable = 1;
+ return 0;
+}
+
+#define ARCH_HAVE_CPU_CLOCK
+
#endif
--
1.7.7.6
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] implement get_cpu_clock() for s390/s390x
2012-12-30 22:03 [PATCH] implement get_cpu_clock() for s390/s390x Dan Horák
@ 2013-01-01 9:57 ` Jens Axboe
0 siblings, 0 replies; 2+ messages in thread
From: Jens Axboe @ 2013-01-01 9:57 UTC (permalink / raw)
To: Dan Horák; +Cc: fio
On 2012-12-30 23:03, Dan Hor�k wrote:
> ---
> arch/arch-s390.h | 18 ++++++++++++++++++
> 1 files changed, 18 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arch-s390.h b/arch/arch-s390.h
> index fe51791..bcd9163 100644
> --- a/arch/arch-s390.h
> +++ b/arch/arch-s390.h
> @@ -22,4 +22,22 @@
> #define read_barrier() asm volatile("bcr 15,0" : : : "memory")
> #define write_barrier() asm volatile("bcr 15,0" : : : "memory")
>
> +static inline unsigned long long get_cpu_clock(void)
> +{
> + unsigned long long clk;
> +
> + __asm__ __volatile__("stck %0" : "=Q" (clk) : : "cc");
> + return clk;
> +}
> +
> +#define ARCH_HAVE_INIT
> +extern int tsc_reliable;
> +static inline int arch_init(char *envp[])
> +{
> + tsc_reliable = 1;
> + return 0;
> +}
> +
> +#define ARCH_HAVE_CPU_CLOCK
> +
> #endif
Thanks, Dan! Applied.
--
Jens Axboe
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