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7e5ed9f5e0
At the current place members those follow are: : upf_t flags; : upstat_t status; : int hw_stopped; : unsigned int mctrl; : unsigned int timeout; : unsigned int type; : const struct uart_ops *ops; Together, they give (*ops) 8-byte align on 64-bit platforms. And `sysrq_ch` introduces 4-byte padding. On the other side, above: : struct device *dev; : unsigned char hub6; : unsigned char suspended; : unsigned char unused[2]; : const char *name; Adds another 4-byte padding. Moving sysrq members just before `hub6` allows to save 8 bytes per-uart_port on 64-bit platforms: On my gcc, x86_64 sizeof(struct uart_port) goes from 528 to 520. Signed-off-by: Dmitry Safonov <dima@arista.com> Link: https://lore.kernel.org/r/20191213000657.931618-3-dima@arista.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| drm | ||
| dt-bindings | ||
| keys | ||
| kunit | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| scsi | ||
| soc | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| vdso | ||
| video | ||
| xen | ||