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Date: Mon, 12 Nov 2018 13:05:02 -0800
From: Joe Perches <joe@...ches.com>
To: Eric Sandeen <sandeen@...deen.net>,
"Darrick J. Wong" <darrick.wong@...cle.com>,
Christoph Hellwig <hch@....de>
Cc: linux-xfs@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] xfs: Remove noinline from #define STATIC
On Mon, 2018-11-12 at 14:12 -0600, Eric Sandeen wrote:
> On 11/10/18 7:21 PM, Joe Perches wrote:
> > Reduce total object size quite a bit (~32KB) and presumably
> > improve performance at the same time.
> >
> > Total object size old vs new (x86-64 defconfig with xfs)
> >
> > text data bss dec hex filename
> > - 959351 165573 632 1125556 112cb4 (TOTALS) (old)
> > + 924683 165669 632 1090984 10a5a8 (TOTALS) (new)
>
> And what does it do to maximum stack excursions?
It seems to add a maximum of 40 bytes in xfs_reclaim_inodes_ag
and xfs_readdir, but I didn't do more than visually scan
checkstack output.
Using scripts/checkstack.pl on defconfig x86-64 with xfs
and cutting out absolute addresses
diff -urN xfs_cs_old_2 xfs_cs_new_2
--- xfs_cs_old_2 2018-11-12 12:55:03.195282512 -0800
+++ xfs_cs_new_2 2018-11-12 12:55:09.219168923 -0800
@@ -1,18 +1,20 @@
xfs_ag_init_headers [vmlinux]: 464
xfs_ag_init_headers [vmlinux]: 464
-xfs_inode_ag_walk.isra.19 [vmlinux]: 416
-xfs_inode_ag_walk.isra.19 [vmlinux]: 416
+xfs_inode_ag_walk.isra.21 [vmlinux]: 424
+xfs_inode_ag_walk.isra.21 [vmlinux]: 424
+xfs_reclaim_inodes_ag [vmlinux]: 368
+xfs_reclaim_inodes_ag [vmlinux]: 368
xfs_trans_committed_bulk [vmlinux]: 336
-xfs_reclaim_inodes_ag [vmlinux]: 328
-xfs_reclaim_inodes_ag [vmlinux]: 328
xfs_ioc_getfsmap.isra.23 [vmlinux]: 320
xfs_ioc_getfsmap.isra.23 [vmlinux]: 320
+xfs_file_ioctl [vmlinux]: 320
+xfs_file_ioctl [vmlinux]: 320
+xfs_bmapi_write [vmlinux]: 312
xfs_getfsmap [vmlinux]: 304
xfs_qm_dquot_walk.isra.11 [vmlinux]: 296
xfs_qm_dquot_walk.isra.11 [vmlinux]: 296
-xfs_bmapi_write [vmlinux]: 288
-xfs_file_ioctl [vmlinux]: 288
-xfs_file_ioctl [vmlinux]: 288
+xfs_file_compat_ioctl [vmlinux]: 288
+xfs_file_compat_ioctl [vmlinux]: 288
xfs_sb_read_verify [vmlinux]: 280
xfs_sb_read_verify [vmlinux]: 280
xfs_sb_write_verify [vmlinux]: 272
@@ -21,36 +23,38 @@
xfs_rmap_convert [vmlinux]: 264
xfs_rmap_convert_shared [vmlinux]: 256
xfs_rmap_convert_shared [vmlinux]: 256
-xfs_file_compat_ioctl [vmlinux]: 256
-xfs_file_compat_ioctl [vmlinux]: 256
xfs_bmap_extents_to_btree [vmlinux]: 248
xfs_bmap_extents_to_btree [vmlinux]: 248
+xfs_bmap_del_extent_real [vmlinux]: 240
+xfs_alloc_fix_freelist [vmlinux]: 224
+xfs_alloc_fix_freelist [vmlinux]: 224
+xfs_bmap_add_extent_unwritten_real [vmlinux]:224
xfs_symlink [vmlinux]: 224
xfs_symlink [vmlinux]: 224
-xfs_alloc_fix_freelist [vmlinux]: 216
-xfs_alloc_fix_freelist [vmlinux]: 216
-xfs_bmap_local_to_extents.constprop.27 [vmlinux]:208
-xfs_bmap_local_to_extents.constprop.27 [vmlinux]:208
-xfs_ialloc_ag_alloc [vmlinux]: 208
-xfs_ialloc_ag_alloc [vmlinux]: 208
-xfs_bmap_add_extent_unwritten_real [vmlinux]:192
-xfs_bmap_add_extent_unwritten_real [vmlinux]:192
-xfs_bmap_add_extent_delay_real [vmlinux]:192
-xfs_bmap_add_extent_delay_real [vmlinux]:192
-xfs_bmap_del_extent_real [vmlinux]: 192
-xfs_bmap_del_extent_real [vmlinux]: 192
-xfs_bmap_btalloc [vmlinux]: 192
-xfs_bmap_btalloc [vmlinux]: 192
+xfs_bmap_btalloc [vmlinux]: 216
+xfs_bmap_btalloc [vmlinux]: 216
+xfs_attr_rmtval_set [vmlinux]: 208
+xfs_bmap_add_extent_delay_real [vmlinux]:208
+xfs_bmap_local_to_extents.constprop.28 [vmlinux]:208
+xfs_bmap_local_to_extents.constprop.28 [vmlinux]:208
+xfs_bulkstat [vmlinux]: 208
+xfs_ialloc_ag_alloc [vmlinux]: 200
+xfs_ialloc_ag_alloc [vmlinux]: 200
xfs_refcountbt_alloc_block [vmlinux]:192
xfs_refcountbt_alloc_block [vmlinux]:192
+xfs_reflink_remap_blocks [vmlinux]: 192
+xfs_reflink_remap_blocks [vmlinux]: 192
__xfs_bunmapi [vmlinux]: 184
__xfs_bunmapi [vmlinux]: 184
xfs_rmap_map [vmlinux]: 184
xfs_rmap_map [vmlinux]: 184
+xfs_readdir [vmlinux]: 184
+xfs_readdir [vmlinux]: 184
xfs_attr_set [vmlinux]: 176
xfs_attr_set [vmlinux]: 176
xfs_attr3_leaf_to_shortform [vmlinux]:176
xfs_attr3_leaf_to_shortform [vmlinux]:176
+xfs_bmap_add_extent_hole_real [vmlinux]:176
xfs_attr_shortform_to_leaf [vmlinux]:168
xfs_attr_shortform_to_leaf [vmlinux]:168
xfs_btree_delrec [vmlinux]: 168
@@ -59,89 +63,99 @@
xfs_rmap_unmap [vmlinux]: 168
xfs_rmap_map_shared [vmlinux]: 168
xfs_rmap_map_shared [vmlinux]: 168
-xfs_bulkstat [vmlinux]: 168
-xfs_bulkstat [vmlinux]: 168
xfs_scrub_metadata [vmlinux]: 168
xfs_scrub_metadata [vmlinux]: 168
xfs_free_extent_fix_freelist [vmlinux]:160
xfs_free_extent_fix_freelist [vmlinux]:160
-xfs_bmap_add_extent_hole_real [vmlinux]:160
-xfs_bmap_add_extent_hole_real [vmlinux]:160
+xfs_attr3_leaf_split [vmlinux]: 160
+xfs_attr3_leaf_split [vmlinux]: 160
xfs_bmap_insert_extents [vmlinux]: 160
xfs_bmap_insert_extents [vmlinux]: 160
xfs_bmbt_alloc_block [vmlinux]: 160
xfs_bmbt_alloc_block [vmlinux]: 160
xfs_btree_overlapped_query_range [vmlinux]:160
xfs_btree_overlapped_query_range [vmlinux]:160
+xfs_dialloc [vmlinux]: 160
+xfs_dialloc [vmlinux]: 160
__xfs_inobt_alloc_block.isra.9 [vmlinux]:160
__xfs_inobt_alloc_block.isra.9 [vmlinux]:160
xfs_ag_resv_rmapbt_alloc [vmlinux]: 160
xfs_ag_resv_rmapbt_alloc [vmlinux]: 160
+xfs_do_writepage [vmlinux]: 160
+xfs_do_writepage [vmlinux]: 160
xfs_dir2_leaf_readbuf [vmlinux]: 160
xfs_readlink_bmap_ilocked [vmlinux]: 160
xfs_readlink_bmap_ilocked [vmlinux]: 160
xfs_ag_resv_rmapbt_alloc [vmlinux]: 160
xfs_ag_resv_rmapbt_alloc [vmlinux]: 160
+xfs_da3_split [vmlinux]: 152
+xfs_da3_split [vmlinux]: 152
xfs_getbmap [vmlinux]: 152
xfs_getbmap [vmlinux]: 152
trace_raw_output_xfs_loggrant_class [vmlinux]:144
trace_raw_output_xfs_alloc_class [vmlinux]:144
xfs_attr_remove [vmlinux]: 144
xfs_attr_remove [vmlinux]: 144
-xfs_dialloc_ag_inobt [vmlinux]: 144
-xfs_dialloc_ag_inobt [vmlinux]: 144
+xfs_bmap_split_extent_at [vmlinux]: 144
+__xfs_btree_split.isra.45 [vmlinux]: 144
+__xfs_btree_split.isra.45 [vmlinux]: 144
+xfs_btree_insrec [vmlinux]: 144
+xfs_btree_insrec [vmlinux]: 144
+xfs_da_shrink_inode [vmlinux]: 144
+xfs_da_shrink_inode [vmlinux]: 144
+xfs_attr_list_int_ilocked [vmlinux]: 144
+xfs_attr_list_int_ilocked [vmlinux]: 144
xfs_swap_extent_rmap [vmlinux]: 144
xfs_swap_extent_rmap [vmlinux]: 144
-xfs_readdir [vmlinux]: 144
-xfs_readdir [vmlinux]: 144
+xfs_ioc_trim [vmlinux]: 144
+xfs_ioc_trim [vmlinux]: 144
xfs_inactive_symlink_rmt [vmlinux]: 144
xfs_inactive_symlink_rmt [vmlinux]: 144
xfs_attr_get [vmlinux]: 136
xfs_attr_get [vmlinux]: 136
+xfs_attr_rmtval_get [vmlinux]: 136
+xfs_attr_rmtval_get [vmlinux]: 136
xfs_bmap_add_attrfork_local [vmlinux]:136
xfs_bmap_add_attrfork_local [vmlinux]:136
-__xfs_btree_split.isra.38 [vmlinux]: 136
-__xfs_btree_split.isra.38 [vmlinux]: 136
xfs_btree_split [vmlinux]: 136
xfs_btree_split [vmlinux]: 136
-xfs_btree_insrec [vmlinux]: 136
-xfs_btree_insrec [vmlinux]: 136
+xfs_rmap_finish_one [vmlinux]: 136
+xfs_rmap_finish_one [vmlinux]: 136
+xfs_attr3_leaf_inactive [vmlinux]: 136
+xfs_attr3_leaf_inactive [vmlinux]: 136
xfs_rename [vmlinux]: 136
xfs_rename [vmlinux]: 136
xfs_attr3_leaf_unbalance [vmlinux]: 120
xfs_attr3_leaf_unbalance [vmlinux]: 120
-xfs_attr_rmtval_set [vmlinux]: 120
-xfs_attr_rmtval_set [vmlinux]: 120
-xfs_ioc_fsgeometry_v1 [vmlinux]: 120
-xfs_ioc_fsgeometry_v1 [vmlinux]: 120
-xfs_ioc_fsgeometry [vmlinux]: 120
-xfs_ioc_fsgeometry [vmlinux]: 120
+xfs_refcount_merge_extents [vmlinux]:120
+xfs_refcount_merge_extents [vmlinux]:120
xfs_file_iomap_begin [vmlinux]: 120
xfs_file_iomap_begin [vmlinux]: 120
-xfs_compat_ioc_fsgeometry_v1 [vmlinux]:120
-xfs_compat_ioc_fsgeometry_v1 [vmlinux]:120
+xfs_ifree [vmlinux]: 120
+xfs_ifree [vmlinux]: 120
+xfs_qm_reset_dqcounts_buf.part.15 [vmlinux]:120
+xfs_qm_reset_dqcounts_buf.part.15 [vmlinux]:120
+xfs_rtallocate_extent [vmlinux]: 120
+xfs_rtallocate_extent [vmlinux]: 120
+xfs_free_ag_extent [vmlinux]: 112
xfs_attr3_leaf_toosmall [vmlinux]: 112
xfs_attr3_leaf_toosmall [vmlinux]: 112
-xfs_attr3_leaf_rebalance [vmlinux]: 112
-xfs_attr3_leaf_rebalance [vmlinux]: 112
+xfs_bmap_del_extent_delay [vmlinux]: 112
+xfs_bmap_del_extent_delay [vmlinux]: 112
xfs_iread_extents [vmlinux]: 112
xfs_iread_extents [vmlinux]: 112
-xfs_bmap_split_extent_at [vmlinux]: 112
-xfs_bmap_split_extent_at [vmlinux]: 112
xfs_btree_insert [vmlinux]: 112
xfs_btree_query_range [vmlinux]: 112
-xfs_da3_swap_lastblock [vmlinux]: 112
-xfs_da3_swap_lastblock [vmlinux]: 112
xfs_dir2_node_addname [vmlinux]: 112
xfs_dir2_node_addname [vmlinux]: 112
xfs_dir2_node_removename [vmlinux]: 112
xfs_dir2_node_removename [vmlinux]: 112
-xfs_trim_extents [vmlinux]: 112
-xfs_trim_extents [vmlinux]: 112
+xfs_difree [vmlinux]: 112
+xfs_difree [vmlinux]: 112
xfs_growfs_data [vmlinux]: 112
xfs_growfs_data [vmlinux]: 112
-xfs_ifree_cluster.isra.21 [vmlinux]: 112
-xfs_ifree_cluster.isra.21 [vmlinux]: 112
+xfs_iget [vmlinux]: 112
+xfs_iget [vmlinux]: 112
xfs_inumbers [vmlinux]: 112
xfs_inumbers [vmlinux]: 112
xfs_reflink_end_cow [vmlinux]: 112
@@ -149,17 +163,19 @@
xfs_vn_listxattr [vmlinux]: 112
xfs_vn_listxattr [vmlinux]: 112
xfsaild [vmlinux]: 112
+xfs_growfs_rt [vmlinux]: 112
+xfs_growfs_rt [vmlinux]: 112
trace_raw_output_xfs_dquot_class [vmlinux]:104
xfs_bmapi_reserve_delalloc [vmlinux]:104
xfs_bmapi_reserve_delalloc [vmlinux]:104
+xfs_btree_lshift [vmlinux]: 104
+xfs_btree_lshift [vmlinux]: 104
xfs_da_grow_inode_int [vmlinux]: 104
xfs_da_grow_inode_int [vmlinux]: 104
xfs_dir2_leaf_removename [vmlinux]: 104
xfs_dir2_leaf_removename [vmlinux]: 104
xfs_dir2_leafn_split [vmlinux]: 104
xfs_dir2_leafn_split [vmlinux]: 104
-xfs_iget [vmlinux]: 104
-xfs_iget [vmlinux]: 104
xfs_ioc_space [vmlinux]: 104
xfs_ioc_space [vmlinux]: 104
xfs_emerg [vmlinux]: 104
@@ -169,15 +185,9 @@
xfs_warn [vmlinux]: 104
xfs_notice [vmlinux]: 104
xfs_info [vmlinux]: 104
-xfs_reflink_remap_extent [vmlinux]: 104
-xfs_reflink_remap_extent [vmlinux]: 104
-xfs_reflink_dirty_extents [vmlinux]: 104
-xfs_reflink_dirty_extents [vmlinux]: 104
xfs_reflink_cancel_cow_blocks [vmlinux]:104
xfs_reflink_cancel_cow_blocks [vmlinux]:104
xfs_log_quiesce [vmlinux]: 104
xfs_log_quiesce [vmlinux]: 104
-xfs_rtallocate_extent_near [vmlinux]:104
-xfs_rtallocate_extent_near [vmlinux]:104
xfs_set_acl [vmlinux]: 104
xfs_set_acl [vmlinux]: 104
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