diff options
| author |   Jiang, Yunhong <yunhong.jiang@intel.com> | 2016-10-28 23:29:05 +0000 |
|---|---|---|
| committer |   Gerrit Code Review <gerrit@opnfv.org> | 2016-10-28 23:29:05 +0000 |
| commit | f2e379228d244be691bee350da1cb3d820cb6dfb (patch) | |
| tree | 3061748572f9dcb06fea9c367e366b2691f3a6ba | |
| parent | c0946a21d3e299d73620b6fee2327f5f0f6ebb32 (diff) | |
| parent | 540333b9f4ebaaf2362437da2990f3c63ac4f2e8 (diff) | |
Merge "Fix imprecise timer interrupts by eliminating TSC clockevents frequency roundoff error"
| -rw-r--r-- | kernel/arch/x86/kernel/apic/apic.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/arch/x86/kernel/apic/apic.c b/kernel/arch/x86/kernel/apic/apic.c index 2f69e3b18..d2eee3e1b 100644 --- a/kernel/arch/x86/kernel/apic/apic.c +++ b/kernel/arch/x86/kernel/apic/apic.c @@ -305,7 +305,7 @@ int lapic_get_maxlvt(void) /* Clock divisor */ #define APIC_DIVISOR 16 -#define TSC_DIVISOR 32 +#define TSC_DIVISOR 8 /* * This function sets up the local APIC timer, with a timeout of @@ -557,7 +557,7 @@ static void setup_APIC_timer(void) CLOCK_EVT_FEAT_DUMMY); levt->set_next_event = lapic_next_deadline; clockevents_config_and_register(levt, - (tsc_khz / TSC_DIVISOR) * 1000, + tsc_khz * (1000 / TSC_DIVISOR), 0xF, ~0UL); } else clockevents_register_device(levt); |