#include #include #include /* struct se_cmd */ #define TCM_LOOP_VERSION "v2.1-rc2" #define TL_WWN_ADDR_LEN 256 #define TL_TPGS_PER_HBA 32 struct tcm_loop_cmd { /* State of Linux/SCSI CDB+Data descriptor */ u32 sc_cmd_state; /* Tagged command queueing */ u32 sc_cmd_tag; /* Pointer to the CDB+Data descriptor from Linux/SCSI subsystem */ struct scsi_cmnd *sc; /* The TCM I/O descriptor that is accessed via container_of() */ struct se_cmd tl_se_cmd; struct work_struct work; /* Sense buffer that will be mapped into outgoing status */ unsigned char tl_sense_buf[TRANSPORT_SENSE_BUFFER]; }; struct tcm_loop_tmr { atomic_t tmr_complete; wait_queue_head_t tl_tmr_wait; }; struct tcm_loop_nexus { /* * Pointer to TCM session for I_T Nexus */ struct se_session *se_sess; }; #define TCM_TRANSPORT_ONLINE 0 #define TCM_TRANSPORT_OFFLINE 1 struct tcm_loop_tpg { unsigned short tl_tpgt; unsigned short tl_transport_status; enum target_prot_type tl_fabric_prot_type; atomic_t tl_tpg_port_count; struct se_portal_group tl_se_tpg; struct tcm_loop_hba *tl_hba; struct tcm_loop_nexus *tl_nexus; }; struct tcm_loop_hba { u8 tl_proto_id; unsigned char tl_wwn_address[TL_WWN_ADDR_LEN]; struct se_hba_s *se_hba; struct se_lun *tl_hba_lun; struct se_port *tl_hba_lun_sep; struct device dev; struct Scsi_Host *sh; struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA]; struct se_wwn tl_hba_wwn; }; m> net-next plumbingsTobias Klauser
summaryrefslogtreecommitdiff
path: root/tools/perf/scripts/python/bin/syscall-counts-by-pid-report
diff options
context:
space:
mode:
authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /tools/perf/scripts/python/bin/syscall-counts-by-pid-report
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'tools/perf/scripts/python/bin/syscall-counts-by-pid-report')