1a5bae25e3
Add following new vmstat events which will help in validating THP migration without split. Statistics reported through these new VM events will help in performance debugging. 1. THP_MIGRATION_SUCCESS 2. THP_MIGRATION_FAILURE 3. THP_MIGRATION_SPLIT In addition, these new events also update normal page migration statistics appropriately via PGMIGRATE_SUCCESS and PGMIGRATE_FAILURE. While here, this updates current trace event 'mm_migrate_pages' to accommodate now available THP statistics. [akpm@linux-foundation.org: s/hpage_nr_pages/thp_nr_pages/] [ziy@nvidia.com: v2] Link: http://lkml.kernel.org/r/C5E3C65C-8253-4638-9D3C-71A61858BB8B@nvidia.com [anshuman.khandual@arm.com: s/thp_nr_pages/hpage_nr_pages/] Link: http://lkml.kernel.org/r/1594287583-16568-1-git-send-email-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: Hugh Dickins <hughd@google.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Zi Yan <ziy@nvidia.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Link: http://lkml.kernel.org/r/1594080415-27924-1-git-send-email-anshuman.khandual@arm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM migrate
|
|
|
|
#if !defined(_TRACE_MIGRATE_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_MIGRATE_H
|
|
|
|
#include <linux/tracepoint.h>
|
|
|
|
#define MIGRATE_MODE \
|
|
EM( MIGRATE_ASYNC, "MIGRATE_ASYNC") \
|
|
EM( MIGRATE_SYNC_LIGHT, "MIGRATE_SYNC_LIGHT") \
|
|
EMe(MIGRATE_SYNC, "MIGRATE_SYNC")
|
|
|
|
|
|
#define MIGRATE_REASON \
|
|
EM( MR_COMPACTION, "compaction") \
|
|
EM( MR_MEMORY_FAILURE, "memory_failure") \
|
|
EM( MR_MEMORY_HOTPLUG, "memory_hotplug") \
|
|
EM( MR_SYSCALL, "syscall_or_cpuset") \
|
|
EM( MR_MEMPOLICY_MBIND, "mempolicy_mbind") \
|
|
EM( MR_NUMA_MISPLACED, "numa_misplaced") \
|
|
EMe(MR_CONTIG_RANGE, "contig_range")
|
|
|
|
/*
|
|
* First define the enums in the above macros to be exported to userspace
|
|
* via TRACE_DEFINE_ENUM().
|
|
*/
|
|
#undef EM
|
|
#undef EMe
|
|
#define EM(a, b) TRACE_DEFINE_ENUM(a);
|
|
#define EMe(a, b) TRACE_DEFINE_ENUM(a);
|
|
|
|
MIGRATE_MODE
|
|
MIGRATE_REASON
|
|
|
|
/*
|
|
* Now redefine the EM() and EMe() macros to map the enums to the strings
|
|
* that will be printed in the output.
|
|
*/
|
|
#undef EM
|
|
#undef EMe
|
|
#define EM(a, b) {a, b},
|
|
#define EMe(a, b) {a, b}
|
|
|
|
TRACE_EVENT(mm_migrate_pages,
|
|
|
|
TP_PROTO(unsigned long succeeded, unsigned long failed,
|
|
unsigned long thp_succeeded, unsigned long thp_failed,
|
|
unsigned long thp_split, enum migrate_mode mode, int reason),
|
|
|
|
TP_ARGS(succeeded, failed, thp_succeeded, thp_failed,
|
|
thp_split, mode, reason),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, succeeded)
|
|
__field( unsigned long, failed)
|
|
__field( unsigned long, thp_succeeded)
|
|
__field( unsigned long, thp_failed)
|
|
__field( unsigned long, thp_split)
|
|
__field( enum migrate_mode, mode)
|
|
__field( int, reason)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->succeeded = succeeded;
|
|
__entry->failed = failed;
|
|
__entry->thp_succeeded = thp_succeeded;
|
|
__entry->thp_failed = thp_failed;
|
|
__entry->thp_split = thp_split;
|
|
__entry->mode = mode;
|
|
__entry->reason = reason;
|
|
),
|
|
|
|
TP_printk("nr_succeeded=%lu nr_failed=%lu nr_thp_succeeded=%lu nr_thp_failed=%lu nr_thp_split=%lu mode=%s reason=%s",
|
|
__entry->succeeded,
|
|
__entry->failed,
|
|
__entry->thp_succeeded,
|
|
__entry->thp_failed,
|
|
__entry->thp_split,
|
|
__print_symbolic(__entry->mode, MIGRATE_MODE),
|
|
__print_symbolic(__entry->reason, MIGRATE_REASON))
|
|
);
|
|
#endif /* _TRACE_MIGRATE_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|