PCI: Change pdev->rom_attr_enabled to single bit

Make 'rom_attr_enabled' a single bit in a bitfield and move it close to an
existing bitfield so that they can be merged.

This field is only used in 'drivers/pci/pci-sysfs.c' to store 0 or 1.

On x86_64, this shrinks the size of 'struct pci_dev' by 8 bytes from 3560
to 3552.

Link: https://lore.kernel.org/r/d7a34ad369336db73145c3efbade895e792a0ad3.1687105455.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 1067547..0ff7500 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -464,12 +464,12 @@ struct pci_dev {
        unsigned int    no_vf_scan:1;           /* Don't scan for VFs after IOV enablement */
        unsigned int    no_command_memory:1;    /* No PCI_COMMAND_MEMORY */
        unsigned int    rom_bar_overlap:1;      /* ROM BAR disable broken */
+       unsigned int    rom_attr_enabled:1;     /* Display of ROM attribute enabled? */
        pci_dev_flags_t dev_flags;
        atomic_t        enable_cnt;     /* pci_enable_device has been called */
 
        u32             saved_config_space[16]; /* Config space saved at suspend time */
        struct hlist_head saved_cap_space;
-       int             rom_attr_enabled;       /* Display of ROM attribute enabled? */
        struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
        struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */