diff options
| author | Richard Chang <richardycc@google.com> | 2024-02-28 06:11:17 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-03-05 02:01:27 +0100 |
| commit | c8b36003121834cb77fcaf8a1ce0a454d7a97891 (patch) | |
| tree | 5e354699da762570795a258d5a559b5528f3c53c /mm/page_isolation.c | |
| parent | mm: use folio more widely in __split_huge_page (diff) | |
| download | linux-c8b36003121834cb77fcaf8a1ce0a454d7a97891.tar.xz linux-c8b36003121834cb77fcaf8a1ce0a454d7a97891.zip | |
mm: add alloc_contig_migrate_range allocation statistics
alloc_contig_migrate_range has every information to be able to understand
big contiguous allocation latency. For example, how many pages are
migrated, how many times they were needed to unmap from page tables.
This patch adds the trace event to collect the allocation statistics. In
the field, it was quite useful to understand CMA allocation latency.
[akpm@linux-foundation.org: a/trace_mm_alloc_config_migrate_range_info_enabled/trace_mm_alloc_contig_migrate_range_info_enabled]
Link: https://lkml.kernel.org/r/20240228051127.2859472-1-richardycc@google.com
Signed-off-by: Richard Chang <richardycc@google.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org.
Cc: Martin Liu <liumartin@google.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/page_isolation.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_isolation.c b/mm/page_isolation.c index cd0ea3668253..a5c8fa4c2a75 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -434,7 +434,7 @@ static int isolate_single_pageblock(unsigned long boundary_pfn, int flags, } ret = __alloc_contig_migrate_range(&cc, head_pfn, - head_pfn + nr_pages); + head_pfn + nr_pages, page_mt); /* * restore the page's migratetype so that it can |