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| author | Libo Chen <libo.chen@oracle.com> | 2025-04-23 19:45:23 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-05-12 23:50:46 -0700 |
| commit | 3fc567e4c0b71d6c59ba26c5d6e54cf3c490dd3a (patch) | |
| tree | e0febe2a613b3abd3651d583f15e9dddd9ba8130 /include/trace | |
| parent | sched/numa: skip VMA scanning on memory pinned to one NUMA node via cpuset.mems (diff) | |
| download | linux-3fc567e4c0b71d6c59ba26c5d6e54cf3c490dd3a.tar.gz linux-3fc567e4c0b71d6c59ba26c5d6e54cf3c490dd3a.zip | |
sched/numa: add tracepoint that tracks the skipping of numa balancing due to cpuset memory pinning
Unlike sched_skip_vma_numa tracepoint which tracks skipped VMAs, this
tracks the task subjected to cpuset.mems pinning and prints out its
allowed memory node mask.
Link: https://lkml.kernel.org/r/20250424024523.2298272-3-libo.chen@oracle.com
Signed-off-by: Libo Chen <libo.chen@oracle.com>
Cc: "Chen, Tim C" <tim.c.chen@intel.com>
Cc: Chen Yu <yu.c.chen@intel.com>
Cc: Chris Hyser <chris.hyser@oracle.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Madadi Vineeth Reddy <vineethr@linux.ibm.com>
Cc: Mel Gorman <mgorman <mgorman@suse.de>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Raghavendra K T <raghavendra.kt@amd.com>
Cc: Srikanth Aithal <sraithal@amd.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/sched.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index 8994e97d86c1..ff3990318aec 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -745,6 +745,39 @@ TRACE_EVENT(sched_skip_vma_numa, __entry->vm_end, __print_symbolic(__entry->reason, NUMAB_SKIP_REASON)) ); + +TRACE_EVENT(sched_skip_cpuset_numa, + + TP_PROTO(struct task_struct *tsk, nodemask_t *mem_allowed_ptr), + + TP_ARGS(tsk, mem_allowed_ptr), + + TP_STRUCT__entry( + __array( char, comm, TASK_COMM_LEN ) + __field( pid_t, pid ) + __field( pid_t, tgid ) + __field( pid_t, ngid ) + __array( unsigned long, mem_allowed, BITS_TO_LONGS(MAX_NUMNODES)) + ), + + TP_fast_assign( + memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); + __entry->pid = task_pid_nr(tsk); + __entry->tgid = task_tgid_nr(tsk); + __entry->ngid = task_numa_group_id(tsk); + BUILD_BUG_ON(sizeof(nodemask_t) != \ + BITS_TO_LONGS(MAX_NUMNODES) * sizeof(long)); + memcpy(__entry->mem_allowed, mem_allowed_ptr->bits, + sizeof(__entry->mem_allowed)); + ), + + TP_printk("comm=%s pid=%d tgid=%d ngid=%d mem_nodes_allowed=%*pbl", + __entry->comm, + __entry->pid, + __entry->tgid, + __entry->ngid, + MAX_NUMNODES, __entry->mem_allowed) +); #endif /* CONFIG_NUMA_BALANCING */ /* |