It was erroneously asserted by Horst von Brand that 'linux-tracecalls'
"can not find where a function could be called through a pointer"
On the contrary, almost all the chains are terminated with a callback
function,
somewhat fewer with an init function, and fewest of all with a syscall.
Just for fun here is the first half of the (aggregated) list of all functions
terminating chains from our pruned results for kmalloc, marked with the number
of
chains terminated by each of the 280 functions in this partial list:
(
COMMAND was
/usr/lib/cgi-bin/lnxtc.pl -file=include/linux/slab.h -func=kmalloc -nohtml=1 \
-prune='drivers/acpi,fs/xfs,kernel/sched.c,kernel/panic.c,mm/oom_kill.c' |
perl -00lane 'print $F[0]' |
sort |
uniq -c |
sort -rn |
median.pl
)
Total chains are 59228
Number of syscalls, callbacks, init functions, etc, terminating chains is 5873
Weighted median is "37 drivers/net/pcmcia/fmvj18x_cs.c::fmvj18x_event"
Mean is 10
2156 drivers/scsi/osst.c::osst_ioctl
978 drivers/scsi/osst.c::os_scsi_tape_flush
747 drivers/scsi/osst.c::osst_write
532 fs/jffs2/dir.c::jffs2_rename
455 drivers/scsi/osst.c::osst_read
391 fs/jffs2/dir.c::jffs2_mknod
391 fs/jffs2/dir.c::jffs2_mkdir
391 fs/jffs2/dir.c::jffs2_create
351 fs/hpfs/file.c::hpfs_truncate
330 drivers/usb/media/ov511.c::ov51x_probe
324 fs/hpfs/inode.c::hpfs_notify_change
324 fs/hpfs/file.c::hpfs_file_release
314 drivers/usb/media/ov511.c::ov51x_v4l1_ioctl_internal
286 net/rose/rose_dev.c::rose_rebuild_header
269 fs/jffs2/fs.c::jffs2_setattr
269 fs/jffs2/fs.c::jffs2_dirty_inode
268 fs/jffs2/write.c::jffs2_write_inode_range
268 fs/jffs2/file.c::jffs2_prepare_write
266 fs/jffs2/dir.c::jffs2_symlink
266 fs/jffs2/dir.c::jffs2_rmdir
266 fs/jffs2/dir.c::jffs2_link
243 init/main.c::init
225 fs/hpfs/super.c::hpfs_fill_super
222 net/rose/rose_loopback.c::rose_loopback_timer
220 drivers/usb/media/ov511.c::ov51x_v4l1_open
210 drivers/scsi/qla2xxx/qla_init.c::qla2x00_initialize_adapter
202 fs/hpfs/dir.c::hpfs_lookup
188 fs/hpfs/namei.c::hpfs_mkdir
187 fs/ntfs/super.c::ntfs_fill_super
171 sound/usb/usbaudio.c::usb_audio_probe
171 fs/jffs2/background.c::jffs2_garbage_collect_thread
169 fs/jffs2/fs.c::jffs2_write_super
169 fs/hpfs/namei.c::hpfs_symlink
169 fs/hpfs/namei.c::hpfs_mknod
169 fs/hpfs/namei.c::hpfs_create
169 drivers/net/sk98lin/skge.c::SkGeIoctl
165 net/ipv6/tcp_ipv6.c::tcp_v6_hash
164 fs/jffs2/file.c::jffs2_fsync
161 drivers/net/irda/smsc-ircc2.c::smsc_ircc_init
156 net/ipv6/addrconf.c::addrconf_init
156 fs/cifs/file.c::cifs_readdir
156 drivers/scsi/qla2xxx/qla_init.c::qla2x00_configure_fabric
145 net/bridge/br_ioctl.c::br_ioctl_deviceless_stub
139 drivers/net/sk98lin/skgepnmi.c::DiagActions
138 drivers/scsi/osst.c::os_scsi_tape_open
136 fs/hfsplus/dir.c::hfsplus_rename
135 fs/hfs/dir.c::hfs_rename
134 fs/hfs/extent.c::hfs_get_block
132 security/keys/keyctl.c::sys_keyctl
130 net/ax25/ax25_in.c::ax25_kiss_rcv
129 net/ipv4/udp.c::udp_setsockopt
129 net/ipv4/raw.c::raw_setsockopt
125 net/ipv4/af_inet.c::inet_init
123 drivers/scsi/pcmcia/fdomain_stub.c::fdomain_event
123 drivers/scsi/aic7xxx/aic7xxx_osm_pci.c::ahc_linux_pci_dev_probe
122 drivers/scsi/aic7xxx/aic7770_osm.c::aic7770_eisa_dev_probe
121 net/ipv4/af_inet.c::inet_ioctl
121 fs/nfsd/nfs4proc.c::nfsd4_proc_compound
117 drivers/scsi/pcmcia/qlogic_stub.c::qlogic_event
116 drivers/scsi/aic7xxx/aic79xx_osm_pci.c::ahd_linux_pci_dev_probe
116 drivers/net/pcmcia/smc91c92_cs.c::smc_open
114 net/netrom/nr_loopback.c::nr_loopback_timer
113 sound/usb/usbaudio.c::create_composite_quirk
113 drivers/pcmcia/ds.c::ds_ioctl
111 drivers/net/Space.c::net_olddevs_init
107 drivers/scsi/sata_vsc.c::vsc_sata_init_one
107 drivers/scsi/sata_svw.c::k2_sata_init_one
107 drivers/scsi/sata_promise.c::pdc_ata_init_one
107 drivers/scsi/sata_nv.c::nv_init_one
107 drivers/scsi/ahci.c::ahci_init_one
106 drivers/scsi/sata_via.c::svia_init_one
106 drivers/scsi/sata_uli.c::uli_init_one
106 drivers/scsi/sata_sis.c::sis_init_one
106 drivers/scsi/ata_piix.c::piix_init_one
105 fs/hfsplus/dir.c::hfsplus_link
101 drivers/usb/image/microtek.c::mts_usb_probe
101 drivers/usb/image/hpusbscsi.c::hpusbscsi_usb_probe
101 drivers/scsi/NCR_Q720.c::NCR_Q720_probe
101 drivers/scsi/NCR_D700.c::NCR_D700_probe
100 drivers/scsi/sim710.c::sim710_mca_probe
100 drivers/scsi/sim710.c::sim710_eisa_probe
100 drivers/scsi/BusLogic.c::BusLogic_init
99 drivers/scsi/tmscsim.c::dc390_probe_one
99 drivers/scsi/scsi_debug.c::sdebug_driver_probe
99 drivers/scsi/qlogicfas.c::qlogicfas_init
99 drivers/scsi/dmx3191d.c::dmx3191d_probe_one
98 net/ipv6/ndisc.c::pndisc_redo
98 net/ipv6/icmp.c::icmpv6_rcv
96 fs/hfs/super.c::hfs_fill_super
94 sound/pci/cs46xx/cs46xx.c::snd_card_cs46xx_probe
92 sound/pci/ymfpci/ymfpci.c::snd_card_ymfpci_probe
88 net/decnet/af_decnet.c::decnet_init
86 sound/pci/emu10k1/emu10k1.c::snd_card_emu10k1_probe
85 fs/ntfs/mft.c::ntfs_mft_record_alloc
85 drivers/pci/hotplug/pciehp_ctrl.c::event_thread
84 fs/hfsplus/super.c::hfsplus_fill_super
84 drivers/net/sk98lin/skgepnmi.c::OidStruct
82 fs/hfs/dir.c::hfs_rmdir
82 drivers/usb/storage/usb.c::usb_stor_scan_thread
80 fs/jffs2/gc.c::jffs2_garbage_collect_live
79 net/sctp/sm_sideeffect.c::sctp_generate_t3_rtx_event
79 net/sctp/sm_sideeffect.c::sctp_generate_heartbeat_event
79 fs/udf/super.c::udf_fill_super
79 fs/hfs/dir.c::hfs_readdir
77 net/sctp/sm_sideeffect.c::sctp_generate_t5_shutdown_guard_event
77 net/sctp/sm_sideeffect.c::sctp_generate_t4_rto_event
77 net/sctp/sm_sideeffect.c::sctp_generate_t2_shutdown_event
77 net/sctp/sm_sideeffect.c::sctp_generate_t1_init_event
77 net/sctp/sm_sideeffect.c::sctp_generate_t1_cookie_event
77 net/sctp/sm_sideeffect.c::sctp_generate_sack_event
77 net/sctp/sm_sideeffect.c::sctp_generate_autoclose_event
77 net/sctp/endpointola.c::sctp_endpoint_bh_rcv
76 sound/pci/trident/trident.c::snd_trident_probe
75 net/ipv4/tcp_ipv4.c::tcp_v4_rcv
75 fs/jffs2/gc.c::jffs2_garbage_collect_dnode
75 drivers/char/pcmcia/synclink_cs.c::synclink_cs_init
74 fs/jffs2/gc.c::jffs2_garbage_collect_metadata
74 drivers/scsi/scsi_proc.c::proc_scsi_write
74 drivers/net/bonding/bond_main.c::bond_netdev_event
72 drivers/net/wireless/wl3501_cs.c::wl3501_event
71 net/x25/x25_dev.c::x25_lapb_receive_frame
71 fs/hpfs/file.c::hpfs_get_block
71 drivers/scsi/scsi_sysfs.c::store_scan
69 net/rose/af_rose.c::rose_proto_init
69 fs/hfs/extent.c::hfs_file_truncate
68 sound/isa/gus/interwave.c::alsa_card_interwave_init
68 net/wanrouter/wanmain.c::wanrouter_ioctl
68 net/netrom/af_netrom.c::nr_proto_init
68 drivers/net/skfp/skfddi.c::skfp_interrupt
68 drivers/net/ppp_generic.c::ppp_ioctl
67 sound/isa/gus/gusextreme.c::snd_gusextreme_legacy_auto_probe
67 sound/isa/gus/gusextreme.c::alsa_card_gusextreme_init
67 net/x25/x25_dev.c::x25_llc_receive_frame
67 net/8021q/vlan.c::vlan_ioctl_handler
67 fs/jffs2/gc.c::jffs2_garbage_collect_deletion_dirent
67 drivers/char/pcmcia/synclink_cs.c::synclink_cs_exit
65 drivers/usb/gadget/ether.c::eth_bind
65 drivers/pci/hotplug/ibmphp_core.c::enable_slot
64 sound/isa/gus/interwave.c::snd_interwave_probe_legacy_port
64 sound/isa/gus/interwave.c::snd_interwave_pnp_detect
64 net/decnet/af_decnet.c::dn_ioctl
63 sound/pci/cmipci.c::snd_cmipci_probe
62 drivers/pci/hotplug/acpiphp_glue.c::handle_hotplug_event_func
62 arch/i386/pci/legacy.c::pci_legacy_init
61 sound/pci/ice1712/ice1724.c::snd_vt1724_probe
60 sound/pci/via82xx.c::snd_via82xx_probe
60 sound/isa/gus/gusmax.c::snd_gusmax_legacy_auto_probe
60 sound/isa/gus/gusmax.c::alsa_card_gusmax_init
60 net/sctp/sm_sideeffect.c::sctp_cmd_process_sack
58 sound/pci/ice1712/ice1712.c::snd_ice1712_probe
58 net/decnet/sysctl_net_decnet.c::dn_node_address_strategy
58 net/decnet/sysctl_net_decnet.c::dn_node_address_handler
58 fs/ntfs/aops.c::ntfs_readpage
58 fs/befs/linuxvfs.c::befs_readdir
58 drivers/usb/media/ibmcam.c::ibmcam_adjust_picture
58 drivers/char/synclink.c::synclink_init
57 net/irda/irlan/irlan_common.c::irlan_init
57 drivers/usb/core/usb.c::usb_init
56 fs/cifs/inode.c::cifs_rename
56 drivers/usb/media/ibmcam.c::ibmcam_video_start
56 drivers/isdn/i4l/isdn_common.c::isdn_receive_skb_callback
55 sound/oss/gus_card.c::init_gus
55 drivers/net/wireless/atmel_cs.c::atmel_event
54 fs/hpfs/namei.c::hpfs_unlink
54 fs/hpfs/namei.c::hpfs_rmdir
54 fs/hpfs/namei.c::hpfs_rename
54 drivers/scsi/qla2xxx/qla_init.c::qla2x00_find_all_fabric_devs
54 drivers/net/sk98lin/skge.c::skge_remove_one
54 drivers/net/pcmcia/com20020_cs.c::com20020_event
53 sound/isa/wavefront/wavefront.c::alsa_card_wavefront_init
53 drivers/char/pcmcia/synclink_cs.c::mgslpc_attach
52 net/x25/x25_in.c::x25_backlog_rcv
52 net/rose/rose_timer.c::rose_timer_expiry
52 fs/hfsplus/dir.c::hfsplus_symlink
52 fs/hfsplus/dir.c::hfsplus_mknod
52 fs/hfsplus/dir.c::hfsplus_mkdir
52 fs/hfsplus/dir.c::hfsplus_create
52 drivers/serial/serial_cs.c::serial_event
51 drivers/scsi/qla2xxx/qla_init.c::qla2x00_rescan_fcports
51 drivers/net/pcmcia/xirc2ps_cs.c::xirc2ps_event
51 drivers/net/bonding/bond_main.c::bond_activebackup_arp_mon
50 sound/isa/opti9xx/opti92x-ad1848.c::alsa_card_opti9xx_init
50 drivers/net/wireless/orinoco_cs.c::orinoco_cs_event
50 drivers/char/pcmcia/synclink_cs.c::mgslpc_event
49 sound/isa/wavefront/wavefront.c::snd_wavefront_pnp_detect
49 drivers/net/wan/wanxl.c::wanxl_pci_init_one
48 net/bridge/br_ioctl.c::br_dev_ioctl
48 fs/hpfs/inode.c::hpfs_delete_inode
48 drivers/usb/media/se401.c::se401_do_ioctl
48 drivers/net/bonding/bond_main.c::bond_close
47 sound/pci/ens1370.c::snd_audiopci_probe
47 sound/isa/opl3sa2.c::alsa_card_opl3sa2_init
47 net/atm/br2684.c::br2684_ioctl
47 drivers/message/i2o/iop.c::i2o_iop_init
46 net/packet/af_packet.c::packet_setsockopt
46 net/ipv6/addrconf.c::addrconf_add_ifaddr
46 net/appletalk/ddp.c::atalk_init
46 drivers/net/wireless/prism54/islpci_hotplug.c::prism54_probe
46 drivers/net/sis900.c::sis900_probe
46 drivers/net/irda/irtty-sir.c::irtty_open
45 net/ipv4/ipconfig.c::ic_dev_ioctl
45 drivers/usb/core/hub.c::hub_thread
45 drivers/scsi/scsi.c::init_scsi
45 drivers/scsi/qla2xxx/qla_init.c::qla2x00_loop_resync
45 drivers/pcmcia/cs.c::pccardd
45 drivers/net/wireless/atmel_cs.c::atmel_cs_cleanup
45 drivers/net/wan/pci200syn.c::pci200_pci_init_one
45 drivers/net/wan/n2.c::n2_init
45 drivers/net/bonding/bond_main.c::bonding_init
44 sound/oss/trix.c::init_trix
44 net/atm/clip.c::clip_ioctl
44 drivers/net/wan/sealevel.c::slvl_init_module
44 drivers/net/s2io.c::s2io_init_nic
44 drivers/net/hamradio/yam.c::yam_init_driver
44 drivers/net/ethertap.c::ethertap_init
44 drivers/net/dummy.c::dummy_init_module
43 sound/isa/opl3sa2.c::snd_opl3sa2_pnp_detect
43 sound/core/oss/pcm_oss.c::snd_pcm_oss_plugin_clear
43 net/sctp/sm_statefuns.c::sctp_sf_do_5_2_4_dupcook
43 net/sched/sch_teql.c::teql_init
43 net/bluetooth/bnep/sock.c::bnep_sock_ioctl
43 fs/cifs/cifsfs.c::cifs_get_sb
43 drivers/pci/hotplug/shpchp_ctrl.c::event_thread
43 drivers/pci/hotplug/cpqphp_ctrl.c::event_thread
43 drivers/net/wan/dlci.c::dlci_ioctl
43 drivers/net/sundance.c::sundance_probe1
43 drivers/net/dgrs.c::dgrs_pci_probe
43 drivers/net/dgrs.c::dgrs_eisa_probe
43 drivers/media/dvb/dvb-core/dvb_net.c::dvb_net_do_ioctl
42 sound/oss/mad16.c::init_mad16
42 sound/isa/sb/sb16.c::alsa_card_sb16_init
42 net/sctp/sm_statefuns.c::sctp_sf_do_5_2_2_dupinit
42 net/sctp/sm_statefuns.c::sctp_sf_do_5_2_1_siminit
42 net/ax25/af_ax25.c::ax25_ioctl
42 fs/hfs/btree.c::hfs_bmap_alloc
42 drivers/usb/net/pegasus.c::pegasus_probe
41 sound/isa/gus/gusclassic.c::snd_gusclassic_legacy_auto_probe
41 sound/isa/gus/gusclassic.c::alsa_card_gusclassic_init
41 sound/isa/ad1816a/ad1816a.c::snd_ad1816a_pnp_detect
41 fs/hfs/dir.c::hfs_mkdir
41 fs/hfs/dir.c::hfs_lookup
41 fs/hfs/dir.c::hfs_create
41 fs/hfs/attr.c::hfs_setxattr
41 fs/hfs/attr.c::hfs_getxattr
40 sound/oss/sb_card.c::sb_init
40 sound/isa/cs423x/cs4236.c::alsa_card_cs423x_init
40 sound/isa/azt2320.c::snd_azt2320_pnp_detect
40 net/ipv6/addrconf.c::addrconf_del_ifaddr
40 fs/partitions/check.c::register_disk
40 drivers/scsi/st.c::st_ioctl
39 sound/pci/cs4281.c::snd_cs4281_probe
39 fs/ntfs/aops.c::ntfs_writepage
39 drivers/usb/serial/usb-serial.c::usb_serial_init
39 drivers/net/sk98lin/skge.c::skge_probe_one
38 sound/oss/sb_card.c::sb_pnp_probe
38 sound/isa/sb/sb16.c::snd_sb16_probe_legacy_port
38 sound/isa/sb/sb16.c::snd_sb16_pnp_detect
38 net/sctp/sm_statefuns.c::sctp_sf_do_5_1B_init
38 fs/ntfs/lcnalloc.c::__ntfs_cluster_free
38 fs/cifs/file.c::cifs_open
38 fs/befs/linuxvfs.c::befs_lookup
38 drivers/net/sk98lin/skge.c::SkGeIsrOnePort
38 drivers/net/sk98lin/skge.c::SkGeIsr
37 sound/isa/es18xx.c::alsa_card_es18xx_init
37 net/ipx/af_ipx.c::ipx_ioctl
37 fs/cifs/inode.c::cifs_mkdir
37 fs/cifs/file.c::cifs_writepage
37 fs/cifs/file.c::cifs_readpages
37 fs/cifs/file.c::cifs_readpage
37 fs/cifs/file.c::cifs_prepare_write
37 fs/cifs/file.c::cifs_commit_write
37 fs/cifs/dir.c::cifs_dir_open
37 fs/cifs/cifsfs.c::cifs_write_wrapper
37 fs/cifs/cifsfs.c::cifs_read_wrapper
37 drivers/usb/storage/usb.c::storage_probe
37 drivers/usb/serial/io_ti.c::edge_startup
37 drivers/usb/net/kaweth.c::kaweth_probe
37 drivers/pci/hotplug/cpqphp_core.c::process_SI
37 drivers/net/wireless/wavelan_cs.c::wavelan_event
37 drivers/net/pcmcia/fmvj18x_cs.c::fmvj18x_event
...
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