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Date: Wed, 30 Oct 2019 12:15:30 -0700
From: Joe Perches <joe@...ches.com>
To: Dan Carpenter <dan.carpenter@...cle.com>, shuah <shuah@...nel.org>
Cc: David Gow <davidgow@...gle.com>,
Brendan Higgins <brendanhiggins@...gle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Kees Cook <keescook@...omium.org>,
"open list:KERNEL SELFTEST FRAMEWORK"
<linux-kselftest@...r.kernel.org>, kunit-dev@...glegroups.com,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH linux-kselftest/test v6] lib/list-test: add a test for
the 'list' doubly linked list
On Wed, 2019-10-30 at 21:46 +0300, Dan Carpenter wrote:
> Hm... I imagined the checkpatch code a little different in my head but
> this would also work to make it stricter. I doubt it miss very many
> real life style problems.
Well, doubts vs reality...
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
[]
> @@ -3607,7 +3607,7 @@ sub process {
>
> # if/while/etc brace do not go on next line, unless defining a do while loop,
> # or if that brace on the next line is for something else
> - if ($line =~ /(.*)\b((?:if|while|for|switch|(?:[a-z_]+|)for_each[a-z_]+)\s*\(|do\b|else\b)/ && $line !~ /^.\s*\#/) {
> + if ($line =~ /(.*)\b((?:if|while|for|switch|(?:list|hlist)_for_each[a-z_]+)\s*\(|do\b|else\b)/ && $line !~ /^.\s*\#/) {
> my $pre_ctx = "$1$2";
>
> my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0);
So - nak
$ git grep -P '(?:[a-z0-9_]+_)?for_each(?:_[a-z0-9_]+)?' -- '*.[ch]' | \
grep -P -oh '(?:[a-z0-9_]+_)?for_each(?:_[a-z0-9_]+)?' | \
sort | uniq -c | sort -rn | grep -v -P '(?:h?list_| for_each)'
225 netdev_for_each_mc_addr
157 device_for_each_child
132 idr_for_each_entry
101 nla_for_each_nested
96 drm_for_each_connector_iter
91 kvm_for_each_vcpu
88 rdev_for_each
82 scsi_for_each_sg
75 ata_for_each_dev
73 sk_for_each
66 bus_for_each_dev
64 xa_for_each
62 hash_for_each_possible
59 shost_for_each_device
54 idr_for_each
54 efx_for_each_channel
48 hash_for_each_safe
48 ata_for_each_link
47 ef4_for_each_channel
46 snd_pcm_group_for_each_entry
46 bond_for_each_slave
44 netdev_for_each_uc_addr
44 drm_for_each_crtc
39 rbtree_postorder_for_each_entry_safe
38 xas_for_each
37 bio_for_each_segment_all
36 of_property_for_each_string
36 bio_for_each_segment
32 radix_tree_for_each_slot
31 class_for_each_device
30 queue_for_each_hw_ctx
29 rq_for_each_segment
28 of_property_for_each_u32
28 drm_connector_for_each_possible_encoder
27 drm_atomic_for_each_plane_damage
27 bond_for_each_slave_rcu
26 snd_array_for_each
26 rdma_for_each_port
26 drm_for_each_encoder
26 device_for_each_child_node
25 ubi_rb_for_each_entry
24 driver_for_each_device
23 nla_for_each_attr
23 hash_for_each
23 drm_for_each_plane
21 xas_for_each_marked
21 snd_soc_dapm_widget_for_each_sink_path
21 pci_bus_for_each_resource
21 drm_mm_for_each_node_safe
20 __shost_for_each_device
20 mdesc_for_each_node_by_name
20 mdesc_for_each_arc
20 iscsi_host_for_each_session
19 media_device_for_each_entity
19 drm_client_for_each_modeset
19 bus_for_each_drv
18 pci_for_each_dma_alias
18 nexthop_for_each_fib6_nh
18 netdev_for_each_lower_dev
18 label_for_each
18 in_dev_for_each_ifa_rcu
18 efx_for_each_channel_tx_queue
17 starget_for_each_device
17 snd_soc_dapm_widget_for_each_source_path
17 hash_for_each_possible_rcu
17 eeh_for_each_pe
17 drm_for_each_plane_mask
17 css_for_each_descendant_pre
16 wl12xx_for_each_wlvif
16 rhl_for_each_entry_rcu
16 ice_for_each_traffic_class
16 fn_for_each_confined
16 ebitmap_for_each_positive_bit
16 bpf_object__for_each_program
15 tx_queue_for_each
15 fn_for_each
15 flow_action_for_each
15 ef4_for_each_channel_tx_queue
15 eeh_pe_for_each_dev
15 drm_for_each_encoder_mask
15 cpufreq_for_each_valid_entry
14 rdev_for_each_rcu
14 kvm_for_each_memslot
14 ice_for_each_vsi
14 hists__for_each_format
13 xa_for_each_marked
13 pwrdm_for_each
13 klp_for_each_object
13 in_dev_for_each_ifa_rtnl
13 ice_for_each_q_vector
13 efx_for_each_channel_rx_queue
13 drm_for_each_detailed_block
13 cgroup_taskset_for_each
12 v4l2_device_for_each_subdev
12 __rq_for_each_bio
12 rcu_for_each_leaf_node
12 drm_atomic_crtc_for_each_plane
11 wl12xx_for_each_wlvif_sta
11 while_for_each_ftrace_op
11 sctp_skb_for_each
11 queue_for_each
11 qed_for_each_vf
11 klp_for_each_func
11 iommu_group_for_each_dev
11 ide_port_for_each_present_dev
11 i2c_for_each_dev
11 hash_for_each_rcu
11 ef4_for_each_channel_rx_queue
11 do_for_each_ftrace_rec
11 cpufreq_for_each_valid_entry_idx
11 cpufreq_for_each_entry
10 while_for_each_ftrace_rec
10 sk_for_each_bound
10 rpc_clnt_iterate_for_each_xprt
10 of_for_each_phandle
10 input_handler_for_each_handle
10 drm_mm_for_each_node
10 do_for_each_ftrace_op
10 clkdm_for_each
10 bpf_object__for_each_map
9 vlan_group_for_each_dev
9 vlan_for_each
9 toptree_for_each
9 perf_event_for_each_child
9 ixgbe_for_each_ring
9 io_wq_for_each_worker
9 ide_port_for_each_dev
9 i3c_bus_for_each_i3cdev
9 dp_for_each_set_bit
9 ax25_for_each
8 vfio_pci_for_each_slot_or_bus
8 usbhs_for_each_pipe_with_dcp
8 usb_for_each_dev
8 snd_soc_dapm_widget_for_each_path
8 sk_nulls_for_each
8 sk_for_each_rcu
8 rt2x00queue_for_each_entry
8 rht_for_each_from
8 rcu_for_each_node_breadth_first
8 omap_hwmod_for_each
8 netdev_for_each_tx_queue
8 ide_host_for_each_port
8 hashmap__for_each_key_entry
8 hashmap__for_each_entry
8 fn_for_each_in_ns
8 fdt_for_each_subnode
8 drm_mm_for_each_hole
8 drm_atomic_crtc_state_for_each_plane
8 device_for_each_child_reverse
8 cpuset_for_each_descendant_pre
8 __bio_for_each_segment
7 vsock_for_each_connected_socket
7 tcf_exts_for_each_action
7 snd_soc_dapm_for_each_direction
7 sk_nulls_for_each_rcu
7 sctp_for_each_hentry
7 rdma_for_each_block
7 radix_tree_for_each_tagged
7 pnp_for_each_dev
7 pack_for_each_init
7 netdev_for_each_upper_dev_rcu
7 mtd_for_each_device
7 mlx5e_for_each_hash_node
7 key_for_each
7 kcore_copy__for_each_phdr
7 ixgbevf_for_each_ring
7 intel_atomic_crtc_state_for_each_plane_state
7 idr_for_each_entry_continue
7 i3c_bus_for_each_i2cdev
7 hsr_for_each_port
7 fdt_for_each_property_offset
7 drm_atomic_crtc_state_for_each_plane_state
7 dma_fence_chain_for_each
7 data__for_each_file
7 blkg_for_each_descendant_pre
7 ath_for_each_chanctx
7 ata_qc_for_each_raw
6 xa_for_each_start
6 while_for_each_event_file
6 v4l2_m2m_for_each_src_buf_safe
6 uwb_dev_for_each
6 usb_hub_for_each_child
6 __starget_for_each_device
6 sbitmap_for_each_set
6 perf_config_items__for_each_entry
6 page_chain_for_each
6 omap2_clk_for_each
6 nlmsg_for_each_attr
6 map__for_each_symbol
6 machine__for_each_thread
6 label_for_each_in_ns
6 label_for_each_confined
6 ipmr_for_each_table
6 ice_for_each_txq
6 ice_for_each_rxq
6 func_for_each_insn_all
6 dpm_for_each_dev
6 do_for_each_event_file
6 dfl_fpga_dev_for_each_feature
6 css_for_each_descendant_post
6 css_for_each_child
6 cpuset_for_each_child
6 cgroup_for_each_live_descendant_pre
6 blkg_for_each_descendant_post
6 at91_for_each_port
5 wl12xx_for_each_wlvif_ap
5 usb3_for_each_dma
5 unwind_for_each_frame
5 udp_portaddr_for_each_entry_rcu
5 trace_probe_for_each_link_rcu
5 rq_for_each_bvec
5 rht_for_each_rcu
5 rds_for_each_conn_info
5 ppr_for_each_entry
5 omap_hwmod_for_each_by_class
5 nouveau_for_each_non_mst_connector_iter
5 nft_rule_for_each_expr
5 label_for_each_cont
5 klp_for_each_patch
5 ip6mr_for_each_table
5 __iommu_group_for_each_dev
5 intel_gvt_for_each_tracked_mmio
5 inet_bind_bucket_for_each
5 idr_for_each_entry_ul
5 ice_for_each_ring
5 i40e_for_each_ring
5 hashmap__for_each_entry_safe
5 hash_for_each_possible_safe
5 gen_pool_for_each_chunk
5 gadget_for_each_ep
5 fwnode_for_each_child_node
5 fm10k_for_each_ring
5 fec_for_each_buffer_rs_block
5 enclosure_for_each_device
5 drm_client_for_each_connector_iter
5 drbd_for_each_overlap
5 devres_for_each_res
5 db_for_each_64
5 cpufreq_for_each_entry_idx
5 bpf_for_each_spilled_reg
5 bip_for_each_vec
5 bio_for_each_bvec
5 b53_for_each_port
5 ax25_uid_for_each
4 xen_for_each_gfn
4 xan_for_each_marked
4 wpan_phy_for_each
4 v4l2_m2m_for_each_dst_buf_safe
4 usbhs_for_each_dfifo
4 toptree_for_each_child_safe
4 target_for_each_device
4 ssb_for_each_bus_call
4 srcu_for_each_node_breadth_first
4 sk_for_each_safe
4 sk_for_each_from
4 sk_for_each_entry_offset_rcu
4 sctp_for_each_transport
4 sctp_for_each_endpoint
4 __sbitmap_for_each_set
4 resort_rb__for_each_entry
4 register_for_each_vma
4 rdev_for_each_list
4 rbt_ib_umem_for_each_in_range
4 qeth_for_each_output_queue
4 ping_portaddr_for_each_entry
4 perf_event_for_each
4 perf_cpu_map__for_each_cpu
4 perf_config_set__for_each_entry
4 pcpu_for_each_unpop_region
4 nr_node_for_each_safe
4 nr_node_for_each
4 nlmsg_for_each_msg
4 nfp_for_each_insn_walk2
4 __neigh_for_each_release
4 neigh_for_each
4 mlxsw_sp_rif_neigh_for_each
4 mlxsw_sp_nexthop_for_each
4 idr_for_each_entry_continue_ul
4 hists__for_each_sort_list
4 hctx_for_each_ctx
4 fwnode_for_each_available_child_node
4 fs_for_each_prio
4 elf_symtab__for_each_symbol
4 efx_for_each_possible_channel_tx_queue
4 ef4_for_each_possible_channel_tx_queue
4 drm_mm_for_each_node_in_range
4 drm_for_each_legacy_plane
4 drm_for_each_fb
4 do_for_each_event_file_safe
4 cma_for_each_area
4 chp_id_for_each
4 cgroup_taskset_for_each_leader
4 cgroup_for_each_live_descendant_post
4 card_for_each_dev
4 bt_tags_for_each
4 __btree_for_each
4 bt_for_each
4 bpf_object__for_each_safe
4 __ata_qc_for_each
4 ata_qc_for_each
4 apei_exec_for_each_entry
4 apei_estatus_for_each_section
4 amdgpu_umc_for_each_channel
4 acpi_nvs_for_each_region
3 xas_for_each_conflict
3 wl12xx_for_each_wlvif_bss_type
3 vnic_hash_for_each
3 v4l2_m2m_for_each_dst_buf
3 uwb_dev_for_each_f
3 __usbhsh_for_each_udev
3 usbhsg_for_each_uep_with_dcp
3 __usbhsg_for_each_uep
3 __usbhs_for_each_pipe
3 usb3_for_each_ep
3 ubi_for_each_used_peb
3 ubi_for_each_protected_peb
3 ubi_for_each_free_peb
3 txall_queue_for_each
3 toptree_for_each_safe
3 toptree_for_each_child
3 tcm_for_each_slice
3 symbols__for_each_entry
3 simple_for_each_link
3 shdma_for_each_chan
3 sec_for_each_insn_from
3 sec_for_each_insn
3 sctp_for_each_tx_datachunk
3 sb_for_each_fn
3 rocker_tlv_for_each
3 rht_for_each_rcu_from
3 rht_for_each_entry_rcu_from
3 rht_for_each_entry_from
3 reiserfs_for_each_xattr
3 rdev_for_each_safe
3 rcar_thermal_for_each_priv
3 perf_event_groups_for_each
3 pcpu_for_each_md_free_region
3 pcpu_for_each_fit_region
3 nr_neigh_for_each_safe
3 nr_neigh_for_each
3 nanddev_io_for_each_page
3 mtrr_for_each_mem_type
3 mlxsw_sp_prefix_usage_for_each
3 mlxsw_afk_element_usage_for_each
3 mlx5_esw_for_each_vf_vport_num_reverse
3 mlx5_esw_for_each_host_func_vport
3 mlx5e_for_each_arfs_rule
3 media_device_for_each_intf
3 machines__for_each_thread
3 iov_iter_for_each_range
3 inet_lhash2_for_each_icsk_rcu
3 ice_for_each_alloc_txq
3 ice_for_each_alloc_rxq
3 iavf_for_each_ring
3 hns3_for_each_ring
3 graph_for_each_link
3 gmap_for_each_rmap_safe
3 genradix_for_each
3 gen6_for_each_pde
3 fwnode_graph_for_each_endpoint
3 fs_for_each_ft
3 fq_ring_for_each
3 __for_each_sgt_daddr
3 fn_for_each_not_in_set
3 fifo_for_each
3 fec_for_each_prealloc_buffer
3 fec_for_each_extra_buffer
3 fec_for_each_buffer
3 dsos__for_each_with_build_id
3 dso__for_each_symbol
3 drm_for_each_privobj
3 drm_for_each_lessee
3 data__for_each_file_start
3 data__for_each_file_new
3 dapm_kcontrol_for_each_path
3 btree_for_each_safe64
3 btree_for_each_safe32
3 btf_for_each_str_off
3 bpf__for_each_map_named
3 bio_for_each_integrity_vec
3 ata_qc_for_each_with_internal
3 arm_ccn_for_each_valid_region
2 zorro_for_each_dev
2 wl12xx_for_each_wlvif_continue
2 vtb_for_each_detailed_block
2 vnic_hash_for_each_safe
2 vnic_hash_for_each_possible
2 virtio_device_for_each_vq
2 v4l2_m2m_for_each_src_buf
2 usbhsh_for_each_udev_with_dev0
2 usbhsh_for_each_udev
2 udp_portaddr_for_each_entry
2 ubi_for_each_scrub_peb
2 trace_probe_for_each_link
2 test_for_each_set_clump8
2 tb_property_for_each
2 snd_soc_dapm_widget_for_each_path_safe
2 sk_nulls_for_each_from
2 sctp_for_each_rx_skb
2 scsi_for_each_prot_sg
2 rocker_tlv_for_each_nested
2 rht_for_each_entry_safe
2 rht_for_each_entry_rcu
2 rht_for_each_entry
2 rht_for_each
2 rhl_for_each_rcu
2 protocol_for_each_dev
2 protocol_for_each_card
2 pnp_for_each_card
2 perf_config_sections__for_each_entry
2 pcpu_for_each_pop_region
2 pci_mmcfg_for_each_region
2 page_chain_for_each_safe
2 of_property_for_each_string_index
2 nfp_for_each_insn_walk3
2 netdev_for_each_lower_private_rcu
2 netdev_for_each_lower_private
2 mlx5_esw_for_each_vf_vport_num
2 mlx5_esw_for_each_vf_vport
2 mlx5_esw_for_each_vf_rep_reverse
2 mlx5_esw_for_each_vf_rep
2 mlx5_esw_for_each_host_func_vport_reverse
2 mlx5_esw_for_each_host_func_rep
2 mlx5e_for_each_hash_arfs_rule
2 media_device_for_each_pad
2 media_device_for_each_link
2 __map__for_each_symbol_by_name
2 map__for_each_symbol_by_name
2 libbpf_nla_for_each_attr
2 __labelset_for_each
2 label_for_each_in_merge
2 label_for_each_comb
2 klp_for_each_patch_safe
2 klp_for_each_object_static
2 klp_for_each_object_safe
2 klp_for_each_func_static
2 klp_for_each_func_safe
2 key_for_each_safe
2 hashmap__for_each_key_entry_safe
2 hash_for_each_possible_rcu_notrace
2 genradix_for_each_from
2 func_for_each_insn_continue_reverse
2 func_for_each_insn
2 fs_for_each_ns
2 fs_for_each_fg
2 __for_each_thread
2 __for_each_child_of_node
2 elf_section__for_each_rela
2 elf_section__for_each_rel
2 efx_for_each_channel_rev
2 ef4_for_each_channel_rev
2 drm_crtc_for_each_plane
2 devcom_for_each_component
2 cgroup_for_each_live_child
2 cea_for_each_detailed_block
2 carl9170fw_for_each_hdr
2 bpf__for_each_map
2 __bio_for_each_bvec
1 usbhsg_for_each_uep
1 usbhs_for_each_pipe
1 ubi_for_each_scub_peb
1 toptree_for_each_sibling
1 snd_soc_dapm_widget_for_each_sink_path_safe
1 sec_for_each_insn_continue
1 rmi_for_each_dev
1 pwrdm_for_each_nolock
1 pwrdm_for_each_clkdm
1 pneigh_for_each
1 perf_config_set__for_each
1 perf_config_sections__for_each
1 perf_config_items__for_each
1 nilfs_for_each_segbuf_before
1 nand_io_for_each_page
1 mlx5_esw_for_each_vf_vport_reverse
1 mlx5_esw_for_each_host_func_rep_reverse
1 map__for_each_symbol_with_name
1 label_for_each_not_in_set
1 gmap_for_each_rmap
1 fs_for_each_ns_or_ft_reverse
1 fs_for_each_ns_or_ft
1 fs_for_each_ft_safe
1 fs_for_each_fte
1 fs_for_each_dst
1 fn_for_each_in_merge
1 fn_for_each_comb
1 drm_crtc_atomic_state_for_each_plane_state
1 drm_crtc_atomic_state_for_each_plane
1 class_for_each_dev
1 bus_for_each
1 btree_for_each_safel
1 btree_for_each_safe128
1 bpf_map__for_each
1 blk_queue_for_each_rl
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