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PCI: Reorder pci_dev fields to reduce holes

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Group some bitfield variables to reduce holes.  On x86_64, this shrinks the
size of 'struct pci_dev' by 16 bytes (from 3576 to 3560) when compiled with
'allmodconfig'.

Link: https://lore.kernel.org/r/407b17c3e56764ef2c558898d4ff4c6c04b2d757.1687105455.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Christophe JAILLET 2023-06-18 18:24:54 +02:00 committed by Bjorn Helgaas
parent 06c2afb862
commit 849846c414
1 changed files with 2 additions and 2 deletions
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4
include/linux/pci.h
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@ -366,8 +366,8 @@ struct pci_dev {
pci_power_t current_state; /* Current operating state. In ACPI,
this is D0-D3, D0 being fully
functional, and D3 being off. */
unsigned int imm_ready:1; /* Supports Immediate Readiness */
u8 pm_cap; /* PM capability offset */
unsigned int imm_ready:1; /* Supports Immediate Readiness */
unsigned int pme_support:5; /* Bitmask of states from which PME#
can be generated */
unsigned int pme_poll:1; /* Poll device's PME status bit */
@ -392,9 +392,9 @@ struct pci_dev {
#ifdef CONFIG_PCIEASPM
struct pcie_link_state *link_state; /* ASPM link state */
u16 l1ss; /* L1SS Capability pointer */
unsigned int ltr_path:1; /* Latency Tolerance Reporting
supported from root to here */
u16 l1ss; /* L1SS Capability pointer */
#endif
unsigned int pasid_no_tlp:1; /* PASID works without TLP Prefix */
unsigned int eetlp_prefix_path:1; /* End-to-End TLP Prefix */