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| author | Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> | 2008-07-14 14:00:00 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-10-15 10:15:14 +0200 |
| commit | e32c8f2c0720fb21c6f4a5f6ccbebdadc878f707 (patch) | |
| tree | 75329603864952437757705781520dc52906b51c /virt/kvm/kvm_trace.c | |
| parent | 80e31d4f61f69d0e480ae092cda0e590d6a30aeb (diff) | |
| download | linux-3.10-e32c8f2c0720fb21c6f4a5f6ccbebdadc878f707.tar.gz linux-3.10-e32c8f2c0720fb21c6f4a5f6ccbebdadc878f707.tar.bz2 linux-3.10-e32c8f2c0720fb21c6f4a5f6ccbebdadc878f707.zip | |
KVM: kvmtrace: Remove use of bit fields in kvm trace structure
This patch fixes kvmtrace use on big endian systems. When using bit fields the
compiler will lay data out in the wrong order expected when laid down into a
file.
This fixes it by using one variable instead of using bit fields.
Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'virt/kvm/kvm_trace.c')
| -rw-r--r-- | virt/kvm/kvm_trace.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/virt/kvm/kvm_trace.c b/virt/kvm/kvm_trace.c index 58141f31ea8..9acb78b3cc9 100644 --- a/virt/kvm/kvm_trace.c +++ b/virt/kvm/kvm_trace.c @@ -54,12 +54,13 @@ static void kvm_add_trace(void *probe_private, void *call_data, struct kvm_trace *kt = kvm_trace; struct kvm_trace_rec rec; struct kvm_vcpu *vcpu; - int i, extra, size; + int i, size; + u32 extra; if (unlikely(kt->trace_state != KVM_TRACE_STATE_RUNNING)) return; - rec.event = va_arg(*args, u32); + rec.rec_val = TRACE_REC_EVENT_ID(va_arg(*args, u32)); vcpu = va_arg(*args, struct kvm_vcpu *); rec.pid = current->tgid; rec.vcpu_id = vcpu->vcpu_id; @@ -67,21 +68,21 @@ static void kvm_add_trace(void *probe_private, void *call_data, extra = va_arg(*args, u32); WARN_ON(!(extra <= KVM_TRC_EXTRA_MAX)); extra = min_t(u32, extra, KVM_TRC_EXTRA_MAX); - rec.extra_u32 = extra; - rec.cycle_in = p->cycle_in; + rec.rec_val |= TRACE_REC_TCS(p->cycle_in) + | TRACE_REC_NUM_DATA_ARGS(extra); - if (rec.cycle_in) { + if (p->cycle_in) { rec.u.cycle.cycle_u64 = get_cycles(); - for (i = 0; i < rec.extra_u32; i++) + for (i = 0; i < extra; i++) rec.u.cycle.extra_u32[i] = va_arg(*args, u32); } else { - for (i = 0; i < rec.extra_u32; i++) + for (i = 0; i < extra; i++) rec.u.nocycle.extra_u32[i] = va_arg(*args, u32); } - size = calc_rec_size(rec.cycle_in, rec.extra_u32 * sizeof(u32)); + size = calc_rec_size(p->cycle_in, extra * sizeof(u32)); relay_write(kt->rchan, &rec, size); } |