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| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-10-10 19:12:56 -0400 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-10-13 11:08:02 -0400 |
| commit | e83543b495598233c3741b23bed7c82161c93e24 (patch) | |
| tree | 3fd063d8911744b3f272b9304a98f67e50c29f04 /include/trace | |
| parent | c3b5b6ed1eb4f429addfd9e8e8eb39d1a38c85d0 (diff) | |
| download | op-kernel-dev-e83543b495598233c3741b23bed7c82161c93e24.zip op-kernel-dev-e83543b495598233c3741b23bed7c82161c93e24.tar.gz | |
tracing/xen: Hide events that are not used when X86_PAE is not defined
TRACE_EVENTS() take up memory. If they are defined but not used, then
they simply waste space. If their use case is behind a define, then the
trace events should be as well.
The trace events xen_mmu_set_pte_atomic, xen_mmu_pte_clear, and
xen_mmu_pmd_clear are not used when CONFIG_X86_PAE is not defined.
Link: http://lkml.kernel.org/r/20171010191256.3d6d72cb@gandalf.local.home
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/xen.h | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h index 1b4fed7..6118d82 100644 --- a/include/trace/events/xen.h +++ b/include/trace/events/xen.h @@ -147,7 +147,6 @@ DECLARE_EVENT_CLASS(xen_mmu__set_pte, TP_ARGS(ptep, pteval)) DEFINE_XEN_MMU_SET_PTE(xen_mmu_set_pte); -DEFINE_XEN_MMU_SET_PTE(xen_mmu_set_pte_atomic); TRACE_EVENT(xen_mmu_set_pte_at, TP_PROTO(struct mm_struct *mm, unsigned long addr, @@ -169,21 +168,6 @@ TRACE_EVENT(xen_mmu_set_pte_at, (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_DEFINE_SIZEOF(pmdval_t); TRACE_EVENT(xen_mmu_set_pmd, @@ -201,6 +185,24 @@ TRACE_EVENT(xen_mmu_set_pmd, (int)sizeof(pmdval_t) * 2, (unsigned long long)__entry->pmdval) ); +#ifdef CONFIG_X86_PAE +DEFINE_XEN_MMU_SET_PTE(xen_mmu_set_pte_atomic); + +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_pmd_clear, TP_PROTO(pmd_t *pmdp), TP_ARGS(pmdp), @@ -210,6 +212,7 @@ TRACE_EVENT(xen_mmu_pmd_clear, TP_fast_assign(__entry->pmdp = pmdp), TP_printk("pmdp %p", __entry->pmdp) ); +#endif #if CONFIG_PGTABLE_LEVELS >= 4 |
