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s390x/pci: optimize calling s390_get_phb()

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A function may recursively call device search functions or may call
serveral different device search function. Passing the S390pciState to
search functions as an argument instead of looking up it inside the
search functions lowers the number of calling s390_get_phb().

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Yi Min Zhao 2016-11-23 11:08:29 +08:00 • committed by Cornelia Huck
parent e70377dfa4
commit a975a24aed
4 changed files with 52 additions and 50 deletions
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10
hw/s390x/s390-pci-bus.h
View file

@ -316,6 +316,7 @@ typedef struct S390pciState {
QTAILQ_HEAD(, S390PCIBusDevice) zpci_devs;
} S390pciState;
S390pciState *s390_get_phb(void);
int chsc_sei_nt2_get_event(void *res);
int chsc_sei_nt2_have_event(void);
void s390_pci_sclp_configure(SCCB *sccb);
@ -324,9 +325,10 @@ void s390_pci_iommu_enable(S390PCIIOMMU *iommu);
void s390_pci_iommu_disable(S390PCIIOMMU *iommu);
void s390_pci_generate_error_event(uint16_t pec, uint32_t fh, uint32_t fid,
uint64_t faddr, uint32_t e);
S390PCIBusDevice *s390_pci_find_dev_by_idx(uint32_t idx);
S390PCIBusDevice *s390_pci_find_dev_by_fh(uint32_t fh);
S390PCIBusDevice *s390_pci_find_dev_by_fid(uint32_t fid);
S390PCIBusDevice *s390_pci_find_next_avail_dev(S390PCIBusDevice *pbdev);
S390PCIBusDevice *s390_pci_find_dev_by_idx(S390pciState *s, uint32_t idx);
S390PCIBusDevice *s390_pci_find_dev_by_fh(S390pciState *s, uint32_t fh);
S390PCIBusDevice *s390_pci_find_dev_by_fid(S390pciState *s, uint32_t fid);
S390PCIBusDevice *s390_pci_find_next_avail_dev(S390pciState *s,
S390PCIBusDevice *pbdev);
#endif