fscache: Add more tracepoints
Add more tracepoints to fscache, including:
(*) fscache_page - Tracks netfs pages known to fscache.
(*) fscache_check_page - Tracks the netfs querying whether a page is
pending storage.
(*) fscache_wake_cookie - Tracks cookies being woken up after a page
completes/aborts storage in the cache.
(*) fscache_op - Tracks operations being initialised.
(*) fscache_wrote_page - Tracks return of the backend write_page op.
(*) fscache_gang_lookup - Tracks lookup of pages to be stored in the write
operation.
Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
@@ -33,6 +33,53 @@ enum fscache_cookie_trace {
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fscache_cookie_put_parent,
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};
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enum fscache_page_trace {
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fscache_page_cached,
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fscache_page_inval,
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fscache_page_maybe_release,
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fscache_page_radix_clear_store,
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fscache_page_radix_delete,
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fscache_page_radix_insert,
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fscache_page_radix_pend2store,
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fscache_page_radix_set_pend,
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fscache_page_uncache,
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fscache_page_write,
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fscache_page_write_end,
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fscache_page_write_end_pend,
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fscache_page_write_end_noc,
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fscache_page_write_wait,
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fscache_page_trace__nr
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};
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enum fscache_op_trace {
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fscache_op_cancel,
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fscache_op_cancel_all,
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fscache_op_cancelled,
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fscache_op_completed,
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fscache_op_enqueue_async,
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fscache_op_enqueue_mythread,
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fscache_op_gc,
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fscache_op_init,
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fscache_op_put,
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fscache_op_run,
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fscache_op_signal,
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fscache_op_submit,
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fscache_op_submit_ex,
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fscache_op_work,
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fscache_op_trace__nr
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};
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enum fscache_page_op_trace {
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fscache_page_op_alloc_one,
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fscache_page_op_attr_changed,
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fscache_page_op_check_consistency,
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fscache_page_op_invalidate,
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fscache_page_op_retr_multi,
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fscache_page_op_retr_one,
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fscache_page_op_write_one,
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fscache_page_op_trace__nr
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};
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#endif
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/*
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@@ -47,6 +94,47 @@ enum fscache_cookie_trace {
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EM(fscache_cookie_put_object, "PUT obj") \
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E_(fscache_cookie_put_parent, "PUT prn")
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#define fscache_page_traces \
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EM(fscache_page_cached, "Cached ") \
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EM(fscache_page_inval, "InvalPg") \
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EM(fscache_page_maybe_release, "MayRels") \
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EM(fscache_page_uncache, "Uncache") \
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EM(fscache_page_radix_clear_store, "RxCStr ") \
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EM(fscache_page_radix_delete, "RxDel ") \
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EM(fscache_page_radix_insert, "RxIns ") \
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EM(fscache_page_radix_pend2store, "RxP2S ") \
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EM(fscache_page_radix_set_pend, "RxSPend ") \
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EM(fscache_page_write, "WritePg") \
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EM(fscache_page_write_end, "EndPgWr") \
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EM(fscache_page_write_end_pend, "EndPgWP") \
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EM(fscache_page_write_end_noc, "EndPgNC") \
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E_(fscache_page_write_wait, "WtOnWrt")
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#define fscache_op_traces \
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EM(fscache_op_cancel, "Cancel1") \
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EM(fscache_op_cancel_all, "CancelA") \
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EM(fscache_op_cancelled, "Canclld") \
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EM(fscache_op_completed, "Complet") \
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EM(fscache_op_enqueue_async, "EnqAsyn") \
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EM(fscache_op_enqueue_mythread, "EnqMyTh") \
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EM(fscache_op_gc, "GC ") \
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EM(fscache_op_init, "Init ") \
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EM(fscache_op_put, "Put ") \
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EM(fscache_op_run, "Run ") \
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EM(fscache_op_signal, "Signal ") \
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EM(fscache_op_submit, "Submit ") \
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EM(fscache_op_submit_ex, "SubmitX") \
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E_(fscache_op_work, "Work ")
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#define fscache_page_op_traces \
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EM(fscache_page_op_alloc_one, "Alloc1 ") \
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EM(fscache_page_op_attr_changed, "AttrChg") \
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EM(fscache_page_op_check_consistency, "CheckCn") \
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EM(fscache_page_op_invalidate, "Inval ") \
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EM(fscache_page_op_retr_multi, "RetrMul") \
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EM(fscache_page_op_retr_one, "Retr1 ") \
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E_(fscache_page_op_write_one, "Write1 ")
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/*
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* Export enum symbols via userspace.
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*/
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@@ -271,6 +359,170 @@ TRACE_EVENT(fscache_osm,
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__entry->event_num)
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);
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TRACE_EVENT(fscache_page,
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TP_PROTO(struct fscache_cookie *cookie, struct page *page,
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enum fscache_page_trace why),
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TP_ARGS(cookie, page, why),
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TP_STRUCT__entry(
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__field(struct fscache_cookie *, cookie )
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__field(pgoff_t, page )
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__field(enum fscache_page_trace, why )
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),
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TP_fast_assign(
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__entry->cookie = cookie;
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__entry->page = page->index;
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__entry->why = why;
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),
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TP_printk("c=%p %s pg=%lx",
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__entry->cookie,
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__print_symbolic(__entry->why, fscache_page_traces),
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__entry->page)
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);
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TRACE_EVENT(fscache_check_page,
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TP_PROTO(struct fscache_cookie *cookie, struct page *page,
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void *val, int n),
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TP_ARGS(cookie, page, val, n),
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TP_STRUCT__entry(
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__field(struct fscache_cookie *, cookie )
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__field(void *, page )
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__field(void *, val )
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__field(int, n )
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),
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TP_fast_assign(
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__entry->cookie = cookie;
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__entry->page = page;
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__entry->val = val;
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__entry->n = n;
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),
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TP_printk("c=%p pg=%p val=%p n=%d",
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__entry->cookie, __entry->page, __entry->val, __entry->n)
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);
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TRACE_EVENT(fscache_wake_cookie,
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TP_PROTO(struct fscache_cookie *cookie),
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TP_ARGS(cookie),
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TP_STRUCT__entry(
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__field(struct fscache_cookie *, cookie )
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),
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TP_fast_assign(
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__entry->cookie = cookie;
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),
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TP_printk("c=%p", __entry->cookie)
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);
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TRACE_EVENT(fscache_op,
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TP_PROTO(struct fscache_cookie *cookie, struct fscache_operation *op,
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enum fscache_op_trace why),
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TP_ARGS(cookie, op, why),
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TP_STRUCT__entry(
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__field(struct fscache_cookie *, cookie )
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__field(struct fscache_operation *, op )
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__field(enum fscache_op_trace, why )
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),
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TP_fast_assign(
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__entry->cookie = cookie;
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__entry->op = op;
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__entry->why = why;
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),
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TP_printk("c=%p op=%p %s",
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__entry->cookie, __entry->op,
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__print_symbolic(__entry->why, fscache_op_traces))
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);
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TRACE_EVENT(fscache_page_op,
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TP_PROTO(struct fscache_cookie *cookie, struct page *page,
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struct fscache_operation *op, enum fscache_page_op_trace what),
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TP_ARGS(cookie, page, op, what),
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TP_STRUCT__entry(
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__field(struct fscache_cookie *, cookie )
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__field(pgoff_t, page )
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__field(struct fscache_operation *, op )
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__field(enum fscache_page_op_trace, what )
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),
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TP_fast_assign(
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__entry->cookie = cookie;
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__entry->page = page ? page->index : 0;
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__entry->op = op;
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__entry->what = what;
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),
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TP_printk("c=%p %s pg=%lx op=%p",
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__entry->cookie,
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__print_symbolic(__entry->what, fscache_page_op_traces),
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__entry->page, __entry->op)
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);
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TRACE_EVENT(fscache_wrote_page,
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TP_PROTO(struct fscache_cookie *cookie, struct page *page,
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struct fscache_operation *op, int ret),
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TP_ARGS(cookie, page, op, ret),
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TP_STRUCT__entry(
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__field(struct fscache_cookie *, cookie )
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__field(pgoff_t, page )
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__field(struct fscache_operation *, op )
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__field(int, ret )
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),
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TP_fast_assign(
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__entry->cookie = cookie;
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__entry->page = page->index;
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__entry->op = op;
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__entry->ret = ret;
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),
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TP_printk("c=%p pg=%lx op=%p ret=%d",
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__entry->cookie, __entry->page, __entry->op, __entry->ret)
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);
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TRACE_EVENT(fscache_gang_lookup,
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TP_PROTO(struct fscache_cookie *cookie, struct fscache_operation *op,
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void **results, int n, pgoff_t store_limit),
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TP_ARGS(cookie, op, results, n, store_limit),
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TP_STRUCT__entry(
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__field(struct fscache_cookie *, cookie )
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__field(struct fscache_operation *, op )
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__field(pgoff_t, results0 )
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__field(int, n )
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__field(pgoff_t, store_limit )
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),
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TP_fast_assign(
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__entry->cookie = cookie;
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__entry->op = op;
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__entry->results0 = results[0] ? ((struct page *)results[0])->index : (pgoff_t)-1;
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__entry->n = n;
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__entry->store_limit = store_limit;
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),
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TP_printk("c=%p op=%p r0=%lx n=%d sl=%lx",
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__entry->cookie, __entry->op, __entry->results0, __entry->n,
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__entry->store_limit)
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);
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#endif /* _TRACE_FSCACHE_H */
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/* This part must be outside protection */
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