linux/arch/s390/pci
Sebastian Ott 1f166e9e5c s390/pci_dma: split dma_update_trans
Split dma_update_trans into __dma_update_trans which handles updating
the dma translation tables and __dma_purge_tlb which takes care of
purging associated entries in the dma translation lookaside buffer.

The map_sg API makes use of this split approach by calling
__dma_update_trans once per physically contiguous address range but
__dma_purge_tlb only once per dma contiguous address range.

This results in less invocations of the expensive RPCIT instruction
when using map_sg.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-09-22 13:42:33 +02:00
..
Makefile s390/kernel: add system calls for PCI memory access 2014-11-19 09:46:43 +01:00
pci_clp.c s390/pci: PCI function group 0 is valid for clp_query_pci_fn 2016-04-01 08:42:35 +02:00
pci_debug.c s390/pci: fmb enhancements 2016-04-15 18:16:40 +02:00
pci_dma.c s390/pci_dma: split dma_update_trans 2016-09-22 13:42:33 +02:00
pci_event.c s390/pci: Delete an unnecessary check before the function call "pci_dev_put" 2016-07-18 10:17:24 +02:00
pci_insn.c s390/pci: use basic blocks for pci inline assemblies 2016-06-28 09:32:32 +02:00
pci_mmio.c s390/pci: fix possible information leak in mmio syscall 2015-02-26 09:24:48 +01:00
pci_sysfs.c s390/pci: add report_error attribute 2016-04-15 18:16:39 +02:00
pci.c s390/pci: add zpci_report_error interface 2016-08-24 09:23:56 +02:00