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| author | Aurelien Jarno <aurelien@aurel32.net> | 2009-09-15 00:30:41 +0200 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2009-09-15 00:53:00 +0200 |
| commit | 5c59f6c246249f4c03281d0ab02b81f38f65b398 (patch) | |
| tree | 2c33f6c8239e051cc53ae36bc64a0bc02e29c21f | |
| parent | 36170c5faf3c1404e36d1e96858732380d4db6c9 (diff) | |
| download | qemu-5c59f6c246249f4c03281d0ab02b81f38f65b398.tar.gz qemu-5c59f6c246249f4c03281d0ab02b81f38f65b398.zip | |
Fix Linux task preemption on Versatile board
Backport from master:
Recent versions of the Linux kernel will not preempt CPU-intensive
tasks unless the clock used by sched_clock() works. On -M versatilepb
that's the 24MHz timer in the system controller. It's a very simple
timer, so implement it.
Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
| -rw-r--r-- | hw/arm_sysctl.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/arm_sysctl.c b/hw/arm_sysctl.c index 62222a1ab3..06661d8e75 100644 --- a/hw/arm_sysctl.c +++ b/hw/arm_sysctl.c @@ -8,6 +8,7 @@ */ #include "hw.h" +#include "qemu-timer.h" #include "primecell.h" #include "sysemu.h" @@ -70,8 +71,7 @@ static uint32_t arm_sysctl_read(void *opaque, target_phys_addr_t offset) case 0x58: /* BOOTCS */ return 0; case 0x5c: /* 24MHz */ - /* ??? not implemented. */ - return 0; + return muldiv64(qemu_get_clock(vm_clock), 24000000, ticks_per_sec); case 0x60: /* MISC */ return 0; case 0x84: /* PROCID0 */ |