mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
![Mel Gorman](/assets/img/avatar_default.png)
A low local/remote numa hinting fault ratio is potentially explained by failed migrations. This patch adds a tracepoint that fires when migration fails due to migration rate limitation. Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Alex Thorlton <athorlton@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM migrate
|
|
|
|
#if !defined(_TRACE_MIGRATE_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_MIGRATE_H
|
|
|
|
#define MIGRATE_MODE \
|
|
{MIGRATE_ASYNC, "MIGRATE_ASYNC"}, \
|
|
{MIGRATE_SYNC_LIGHT, "MIGRATE_SYNC_LIGHT"}, \
|
|
{MIGRATE_SYNC, "MIGRATE_SYNC"}
|
|
|
|
#define MIGRATE_REASON \
|
|
{MR_COMPACTION, "compaction"}, \
|
|
{MR_MEMORY_FAILURE, "memory_failure"}, \
|
|
{MR_MEMORY_HOTPLUG, "memory_hotplug"}, \
|
|
{MR_SYSCALL, "syscall_or_cpuset"}, \
|
|
{MR_MEMPOLICY_MBIND, "mempolicy_mbind"}, \
|
|
{MR_CMA, "cma"}
|
|
|
|
TRACE_EVENT(mm_migrate_pages,
|
|
|
|
TP_PROTO(unsigned long succeeded, unsigned long failed,
|
|
enum migrate_mode mode, int reason),
|
|
|
|
TP_ARGS(succeeded, failed, mode, reason),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, succeeded)
|
|
__field( unsigned long, failed)
|
|
__field( enum migrate_mode, mode)
|
|
__field( int, reason)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->succeeded = succeeded;
|
|
__entry->failed = failed;
|
|
__entry->mode = mode;
|
|
__entry->reason = reason;
|
|
),
|
|
|
|
TP_printk("nr_succeeded=%lu nr_failed=%lu mode=%s reason=%s",
|
|
__entry->succeeded,
|
|
__entry->failed,
|
|
__print_symbolic(__entry->mode, MIGRATE_MODE),
|
|
__print_symbolic(__entry->reason, MIGRATE_REASON))
|
|
);
|
|
|
|
TRACE_EVENT(mm_numa_migrate_ratelimit,
|
|
|
|
TP_PROTO(struct task_struct *p, int dst_nid, unsigned long nr_pages),
|
|
|
|
TP_ARGS(p, dst_nid, nr_pages),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN)
|
|
__field( pid_t, pid)
|
|
__field( int, dst_nid)
|
|
__field( unsigned long, nr_pages)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
|
|
__entry->pid = p->pid;
|
|
__entry->dst_nid = dst_nid;
|
|
__entry->nr_pages = nr_pages;
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d dst_nid=%d nr_pages=%lu",
|
|
__entry->comm,
|
|
__entry->pid,
|
|
__entry->dst_nid,
|
|
__entry->nr_pages)
|
|
);
|
|
#endif /* _TRACE_MIGRATE_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|