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rcu: Remove kfree_rcu() special casing and lazy-callback handling

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This commit removes kfree_rcu() special-casing and the lazy-callback
handling from Tree RCU.  It moves some of this special casing to Tiny RCU,
the removal of which will be the subject of later commits.

This results in a nice negative delta.

Suggested-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
[ paulmck: Add slab.h #include, thanks to kbuild test robot <lkp@intel.com>. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Joel Fernandes (Google)
2019-08-30 12:36:32 -04:00
committed by Paul E. McKenney
parent e99637becb
commit 77a40f9703
12 changed files with 90 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
include/trace/events/rcu.h
View File

@@ -481,16 +481,14 @@ TRACE_EVENT_RCU(rcu_dyntick,
*/
TRACE_EVENT_RCU(rcu_callback,
TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy,
long qlen),
TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen),
TP_ARGS(rcuname, rhp, qlen_lazy, qlen),
TP_ARGS(rcuname, rhp, qlen),
TP_STRUCT__entry(
__field(const char *, rcuname)
__field(void *, rhp)
__field(void *, func)
__field(long, qlen_lazy)
__field(long, qlen)
),
@@ -498,13 +496,12 @@ TRACE_EVENT_RCU(rcu_callback,
__entry->rcuname = rcuname;
__entry->rhp = rhp;
__entry->func = rhp->func;
__entry->qlen_lazy = qlen_lazy;
__entry->qlen = qlen;
),
TP_printk("%s rhp=%p func=%ps %ld/%ld",
TP_printk("%s rhp=%p func=%ps %ld",
__entry->rcuname, __entry->rhp, __entry->func,
__entry->qlen_lazy, __entry->qlen)
__entry->qlen)
);
/*
@@ -518,15 +515,14 @@ TRACE_EVENT_RCU(rcu_callback,
TRACE_EVENT_RCU(rcu_kfree_callback,
TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
long qlen_lazy, long qlen),
long qlen),
TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen),
TP_ARGS(rcuname, rhp, offset, qlen),
TP_STRUCT__entry(
__field(const char *, rcuname)
__field(void *, rhp)
__field(unsigned long, offset)
__field(long, qlen_lazy)
__field(long, qlen)
),
@@ -534,13 +530,12 @@ TRACE_EVENT_RCU(rcu_kfree_callback,
__entry->rcuname = rcuname;
__entry->rhp = rhp;
__entry->offset = offset;
__entry->qlen_lazy = qlen_lazy;
__entry->qlen = qlen;
),
TP_printk("%s rhp=%p func=%ld %ld/%ld",
TP_printk("%s rhp=%p func=%ld %ld",
__entry->rcuname, __entry->rhp, __entry->offset,
__entry->qlen_lazy, __entry->qlen)
__entry->qlen)
);
/*
@@ -552,27 +547,24 @@ TRACE_EVENT_RCU(rcu_kfree_callback,
*/
TRACE_EVENT_RCU(rcu_batch_start,
TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit),
TP_PROTO(const char *rcuname, long qlen, long blimit),
TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
TP_ARGS(rcuname, qlen, blimit),
TP_STRUCT__entry(
__field(const char *, rcuname)
__field(long, qlen_lazy)
__field(long, qlen)
__field(long, blimit)
),
TP_fast_assign(
__entry->rcuname = rcuname;
__entry->qlen_lazy = qlen_lazy;
__entry->qlen = qlen;
__entry->blimit = blimit;
),
TP_printk("%s CBs=%ld/%ld bl=%ld",
__entry->rcuname, __entry->qlen_lazy, __entry->qlen,
__entry->blimit)
TP_printk("%s CBs=%ld bl=%ld",
__entry->rcuname, __entry->qlen, __entry->blimit)
);
/*