diff options
| author | John Hubbard <jhubbard@nvidia.com> | 2021-11-05 21:43:32 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-06 21:30:41 +0100 |
| commit | 8eb42beac8d369f5443addd469879d152422a28d (patch) | |
| tree | dfc9d84b7514e5e3a503a2777837114f64431a91 /mm/debug.c | |
| parent | hugetlbfs: extend the definition of hugepages parameter to support node alloc... (diff) | |
| download | linux-8eb42beac8d369f5443addd469879d152422a28d.tar.xz linux-8eb42beac8d369f5443addd469879d152422a28d.zip | |
mm/migrate: de-duplicate migrate_reason strings
In order to remove the need to manually keep three different files in
synch, provide a common definition of the mapping between enum
migrate_reason, and the associated strings for each enum item.
1. Use the tracing system's mapping of enums to strings, by redefining
and reusing the MIGRATE_REASON and supporting macros, and using that
to populate the string array in mm/debug.c.
2. Move enum migrate_reason to migrate_mode.h. This is not strictly
necessary for this patch, but migrate mode and migrate reason go
together, so this will slightly clarify things.
Link: https://lkml.kernel.org/r/20210922041755.141817-2-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Weizhao Ouyang <o451686892@gmail.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/debug.c')
| -rw-r--r-- | mm/debug.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/mm/debug.c b/mm/debug.c index fae0f81ad831..4333b6784a20 100644 --- a/mm/debug.c +++ b/mm/debug.c @@ -16,17 +16,19 @@ #include <linux/ctype.h> #include "internal.h" +#include <trace/events/migrate.h> + +/* + * Define EM() and EMe() so that MIGRATE_REASON from trace/events/migrate.h can + * be used to populate migrate_reason_names[]. + */ +#undef EM +#undef EMe +#define EM(a, b) b, +#define EMe(a, b) b const char *migrate_reason_names[MR_TYPES] = { - "compaction", - "memory_failure", - "memory_hotplug", - "syscall_or_cpuset", - "mempolicy_mbind", - "numa_misplaced", - "contig_range", - "longterm_pin", - "demotion", + MIGRATE_REASON }; const struct trace_print_flags pageflag_names[] = { |