From: Zhan Xusheng Date: Wed, 17 Jun 2026 07:43:34 +0000 (+0800) Subject: erofs: add folio order to trace_erofs_read_folio X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28c5d230980bdd8cb18c073225296c7747995935;p=thirdparty%2Flinux.git erofs: add folio order to trace_erofs_read_folio erofs supports large folios for reads, but the actual folio order instantiated in the page cache may be lower due to allocation constraints such as memory fragmentation. trace_erofs_read_folio already receives the folio being read but currently records only its index. Add folio_order() to the tracepoint so that users can observe the realized folio order and verify the effectiveness of large folio reads. Also drop the uptodate field: read_folio() is only called for a non-uptodate folio, so it is always 0. Suggested-by: Gao Xiang Signed-off-by: Zhan Xusheng Reviewed-by: Gao Xiang Signed-off-by: Gao Xiang --- diff --git a/include/trace/events/erofs.h b/include/trace/events/erofs.h index cd0e3fd8c23f1..0a178cb10fb1e 100644 --- a/include/trace/events/erofs.h +++ b/include/trace/events/erofs.h @@ -90,7 +90,7 @@ TRACE_EVENT(erofs_read_folio, __field(erofs_nid_t, nid ) __field(int, dir ) __field(pgoff_t, index ) - __field(int, uptodate) + __field(unsigned int, order ) __field(bool, raw ) ), @@ -99,16 +99,15 @@ TRACE_EVENT(erofs_read_folio, __entry->nid = EROFS_I(inode)->nid; __entry->dir = S_ISDIR(inode->i_mode); __entry->index = folio->index; - __entry->uptodate = folio_test_uptodate(folio); + __entry->order = folio_order(folio); __entry->raw = raw; ), - TP_printk("dev = (%d,%d), nid = %llu, %s, index = %lu, uptodate = %d " - "raw = %d", + TP_printk("dev = (%d,%d), nid = %llu, %s, index = %lu, order = %u, raw = %d", show_dev_nid(__entry), show_file_type(__entry->dir), (unsigned long)__entry->index, - __entry->uptodate, + __entry->order, __entry->raw) );