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| author | Keir Fraser <keir.fraser@citrix.com> | 2010-07-12 18:30:26 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2010-07-12 18:30:26 +0100 |
| commit | 4471167789e75e84c36a86e5b44e3dbb80cc2ce2 (patch) | |
| tree | ec17758d2dc39189224cac2c0dad290fd7354780 /xen/arch/x86/time.c | |
| parent | 7d343d0e53c881bb6b78db2bf29d584eee467bbf (diff) | |
| download | xen-4471167789e75e84c36a86e5b44e3dbb80cc2ce2.tar.gz xen-4471167789e75e84c36a86e5b44e3dbb80cc2ce2.tar.bz2 xen-4471167789e75e84c36a86e5b44e3dbb80cc2ce2.zip | |
x86, pm: provide core/package cstate residencies
According to Intel 64 and IA32 Architectures SDM 3B Appendix B, Intel
Nehalem/Westmere processors provide h/w MSR to report the core/package
cstate residencies. Extend sysctl_get_pmstat interface to pass the
core/package cstate residencies.
Signed-off-by: Wei Gang <gang.wei@intel.com>
Diffstat (limited to 'xen/arch/x86/time.c')
| -rw-r--r-- | xen/arch/x86/time.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/xen/arch/x86/time.c b/xen/arch/x86/time.c index 3a824ec516..8a08a53791 100644 --- a/xen/arch/x86/time.c +++ b/xen/arch/x86/time.c @@ -787,6 +787,13 @@ s_time_t get_s_time(void) return now; } +uint64_t tsc_ticks2ns(uint64_t ticks) +{ + struct cpu_time *t = &this_cpu(cpu_time); + + return scale_delta(ticks, &t->tsc_scale); +} + /* Explicitly OR with 1 just in case version number gets out of sync. */ #define version_update_begin(v) (((v)+1)|1) #define version_update_end(v) ((v)+1) |