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    SubjectRe: [PATCH 05/15] xen/trace: add mmu tracepoints
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    On Mon, 2011-06-20 at 15:15 -0700, Jeremy Fitzhardinge wrote:

    > diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h
    > index 54600a7..5c4e967 100644
    > --- a/include/trace/events/xen.h
    > +++ b/include/trace/events/xen.h
    > @@ -125,6 +125,229 @@ TRACE_EVENT(xen_mc_extend_args,
    > __entry->res == XEN_MC_XE_BAD_OP ? "BAD_OP" :
    > __entry->res == XEN_MC_XE_NO_SPACE ? "NO_SPACE" : "???")
    > );
    > +
    > +/* mmu */
    > +TRACE_EVENT(xen_mmu_set_pte,
    > + TP_PROTO(pte_t *ptep, pte_t pteval),
    > + TP_ARGS(ptep, pteval),
    > + TP_STRUCT__entry(
    > + __field(pte_t *, ptep)
    > + __field(pteval_t, pteval)
    > + ),
    > + TP_fast_assign(__entry->ptep = ptep;
    > + __entry->pteval = pteval.pte),
    > + TP_printk("ptep %p pteval %0*llx (raw %0*llx)",
    > + __entry->ptep,
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)pte_val(native_make_pte(__entry->pteval)),
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)__entry->pteval)
    > + );
    > +
    > +TRACE_EVENT(xen_mmu_set_pte_atomic,
    > + TP_PROTO(pte_t *ptep, pte_t pteval),
    > + TP_ARGS(ptep, pteval),
    > + TP_STRUCT__entry(
    > + __field(pte_t *, ptep)
    > + __field(pteval_t, pteval)
    > + ),
    > + TP_fast_assign(__entry->ptep = ptep;
    > + __entry->pteval = pteval.pte),
    > + TP_printk("ptep %p pteval %0*llx (raw %0*llx)",
    > + __entry->ptep,
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)pte_val(native_make_pte(__entry->pteval)),
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)__entry->pteval)
    > + );
    > +

    When possible, please use DECLARE_EVENT_CLASS() and DEFINE_EVENT() for
    trace events that are identical but just have a different name. You can
    save kilobytes of .text by doing so.

    -- Steve

    > +TRACE_EVENT(xen_mmu_set_domain_pte,
    > + TP_PROTO(pte_t *ptep, pte_t pteval, unsigned domid),
    > + TP_ARGS(ptep, pteval, domid),
    > + TP_STRUCT__entry(
    > + __field(pte_t *, ptep)
    > + __field(pteval_t, pteval)
    > + __field(unsigned, domid)
    > + ),
    > + TP_fast_assign(__entry->ptep = ptep;
    > + __entry->pteval = pteval.pte;
    > + __entry->domid = domid),
    > + TP_printk("ptep %p pteval %0*llx (raw %0*llx) domid %u",
    > + __entry->ptep,
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)pte_val(native_make_pte(__entry->pteval)),
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)__entry->pteval,
    > + __entry->domid)
    > + );
    > +
    > +TRACE_EVENT(xen_mmu_set_pte_at,
    > + TP_PROTO(struct mm_struct *mm, unsigned long addr,
    > + pte_t *ptep, pte_t pteval),
    > + TP_ARGS(mm, addr, ptep, pteval),
    > + TP_STRUCT__entry(
    > + __field(struct mm_struct *, mm)
    > + __field(unsigned long, addr)
    > + __field(pte_t *, ptep)
    > + __field(pteval_t, pteval)
    > + ),
    > + TP_fast_assign(__entry->mm = mm;
    > + __entry->addr = addr;
    > + __entry->ptep = ptep;
    > + __entry->pteval = pteval.pte),
    > + TP_printk("mm %p addr %lx ptep %p pteval %0*llx (raw %0*llx)",
    > + __entry->mm, __entry->addr, __entry->ptep,
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)pte_val(native_make_pte(__entry->pteval)),
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)__entry->pteval)
    > + );
    > +
    > +TRACE_EVENT(xen_mmu_pte_clear,
    > + TP_PROTO(struct mm_struct *mm, unsigned long addr, pte_t *ptep),
    > + TP_ARGS(mm, addr, ptep),
    > + TP_STRUCT__entry(
    > + __field(struct mm_struct *, mm)
    > + __field(unsigned long, addr)
    > + __field(pte_t *, ptep)
    > + ),
    > + TP_fast_assign(__entry->mm = mm;
    > + __entry->addr = addr;
    > + __entry->ptep = ptep),
    > + TP_printk("mm %p addr %lx ptep %p",
    > + __entry->mm, __entry->addr, __entry->ptep)
    > + );
    > +
    > +TRACE_EVENT(xen_mmu_set_pmd,
    > + TP_PROTO(pmd_t *pmdp, pmd_t pmdval),
    > + TP_ARGS(pmdp, pmdval),
    > + TP_STRUCT__entry(
    > + __field(pmd_t *, pmdp)
    > + __field(pmdval_t, pmdval)
    > + ),
    > + TP_fast_assign(__entry->pmdp = pmdp;
    > + __entry->pmdval = pmdval.pmd),
    > + TP_printk("pmdp %p pmdval %0*llx (raw %0*llx)",
    > + __entry->pmdp,
    > + (int)sizeof(pmdval_t) * 2, (unsigned long long)pmd_val(native_make_pmd(__entry->pmdval)),
    > + (int)sizeof(pmdval_t) * 2, (unsigned long long)__entry->pmdval)
    > + );
    > +
    > +TRACE_EVENT(xen_mmu_pmd_clear,
    > + TP_PROTO(pmd_t *pmdp),
    > + TP_ARGS(pmdp),
    > + TP_STRUCT__entry(
    > + __field(pmd_t *, pmdp)
    > + ),
    > + TP_fast_assign(__entry->pmdp = pmdp),
    > + TP_printk("pmdp %p", __entry->pmdp)
    > + );
    > +
    > +#if PAGETABLE_LEVELS >= 4
    > +
    > +TRACE_EVENT(xen_mmu_set_pud,
    > + TP_PROTO(pud_t *pudp, pud_t pudval),
    > + TP_ARGS(pudp, pudval),
    > + TP_STRUCT__entry(
    > + __field(pud_t *, pudp)
    > + __field(pudval_t, pudval)
    > + ),
    > + TP_fast_assign(__entry->pudp = pudp;
    > + __entry->pudval = native_pud_val(pudval)),
    > + TP_printk("pudp %p pudval %0*llx (raw %0*llx)",
    > + __entry->pudp,
    > + (int)sizeof(pudval_t) * 2, (unsigned long long)pud_val(native_make_pud(__entry->pudval)),
    > + (int)sizeof(pudval_t) * 2, (unsigned long long)__entry->pudval)
    > + );
    > +
    > +TRACE_EVENT(xen_mmu_set_pgd,
    > + TP_PROTO(pgd_t *pgdp, pgd_t *user_pgdp, pgd_t pgdval),
    > + TP_ARGS(pgdp, user_pgdp, pgdval),
    > + TP_STRUCT__entry(
    > + __field(pgd_t *, pgdp)
    > + __field(pgd_t *, user_pgdp)
    > + __field(pgdval_t, pgdval)
    > + ),
    > + TP_fast_assign(__entry->pgdp = pgdp;
    > + __entry->user_pgdp = user_pgdp;
    > + __entry->pgdval = pgdval.pgd),
    > + TP_printk("pgdp %p user_pgdp %p pgdval %0*llx (raw %0*llx)",
    > + __entry->pgdp, __entry->user_pgdp,
    > + (int)sizeof(pgdval_t) * 2, (unsigned long long)pgd_val(native_make_pgd(__entry->pgdval)),
    > + (int)sizeof(pgdval_t) * 2, (unsigned long long)__entry->pgdval)
    > + );
    > +
    > +TRACE_EVENT(xen_mmu_pud_clear,
    > + TP_PROTO(pud_t *pudp),
    > + TP_ARGS(pudp),
    > + TP_STRUCT__entry(
    > + __field(pud_t *, pudp)
    > + ),
    > + TP_fast_assign(__entry->pudp = pudp),
    > + TP_printk("pudp %p", __entry->pudp)
    > + );
    > +#else
    > +
    > +TRACE_EVENT(xen_mmu_set_pud,
    > + TP_PROTO(pud_t *pudp, pud_t pudval),
    > + TP_ARGS(pudp, pudval),
    > + TP_STRUCT__entry(
    > + __field(pud_t *, pudp)
    > + __field(pudval_t, pudval)
    > + ),
    > + TP_fast_assign(__entry->pudp = pudp;
    > + __entry->pudval = native_pud_val(pudval)),
    > + TP_printk("pudp %p pudval %0*llx (raw %0*llx)",
    > + __entry->pudp,
    > + (int)sizeof(pudval_t) * 2, (unsigned long long)pgd_val(native_make_pgd(__entry->pudval)),
    > + (int)sizeof(pudval_t) * 2, (unsigned long long)__entry->pudval)
    > + );
    > +
    > +#endif
    > +
    > +TRACE_EVENT(xen_mmu_pgd_clear,
    > + TP_PROTO(pgd_t *pgdp),
    > + TP_ARGS(pgdp),
    > + TP_STRUCT__entry(
    > + __field(pgd_t *, pgdp)
    > + ),
    > + TP_fast_assign(__entry->pgdp = pgdp),
    > + TP_printk("pgdp %p", __entry->pgdp)
    > + );
    > +
    > +TRACE_EVENT(xen_mmu_ptep_modify_prot_start,
    > + TP_PROTO(struct mm_struct *mm, unsigned long addr,
    > + pte_t *ptep, pte_t pteval),
    > + TP_ARGS(mm, addr, ptep, pteval),
    > + TP_STRUCT__entry(
    > + __field(struct mm_struct *, mm)
    > + __field(unsigned long, addr)
    > + __field(pte_t *, ptep)
    > + __field(pteval_t, pteval)
    > + ),
    > + TP_fast_assign(__entry->mm = mm;
    > + __entry->addr = addr;
    > + __entry->ptep = ptep;
    > + __entry->pteval = pteval.pte),
    > + TP_printk("mm %p addr %lx ptep %p pteval %0*llx (raw %0*llx)",
    > + __entry->mm, __entry->addr, __entry->ptep,
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)pte_val(native_make_pte(__entry->pteval)),
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)__entry->pteval)
    > + );
    > +
    > +TRACE_EVENT(xen_mmu_ptep_modify_prot_commit,
    > + TP_PROTO(struct mm_struct *mm, unsigned long addr,
    > + pte_t *ptep, pte_t pteval),
    > + TP_ARGS(mm, addr, ptep, pteval),
    > + TP_STRUCT__entry(
    > + __field(struct mm_struct *, mm)
    > + __field(unsigned long, addr)
    > + __field(pte_t *, ptep)
    > + __field(pteval_t, pteval)
    > + ),
    > + TP_fast_assign(__entry->mm = mm;
    > + __entry->addr = addr;
    > + __entry->ptep = ptep;
    > + __entry->pteval = pteval.pte),
    > + TP_printk("mm %p addr %lx ptep %p pteval %0*llx (raw %0*llx)",
    > + __entry->mm, __entry->addr, __entry->ptep,
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)pte_val(native_make_pte(__entry->pteval)),
    > + (int)sizeof(pteval_t) * 2, (unsigned long long)__entry->pteval)
    > + );
    > +
    > +
    > #endif /* _TRACE_XEN_H */
    >
    > /* This part must be outside protection */




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