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uart(4) backends currently detect RX FIFO overrun errors and report them to the uart(4) core layer. They are then reported to the generic TTY layer which promptly ignores them. As a result, there is currently no good way to determine if a uart is experiencing RX FIFO overruns. One could add a generic per-tty counter, but there did not appear to be a good way to export those. Instead, add a sysctl under the uart(4) sysctl tree to export the count of overruns. Reviewed by: brooks MFC after: 2 weeks Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D24368 |
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| .. | ||
| uart.h | ||
| uart_bus.h | ||
| uart_bus_acpi.c | ||
| uart_bus_fdt.c | ||
| uart_bus_isa.c | ||
| uart_bus_pccard.c | ||
| uart_bus_pci.c | ||
| uart_bus_puc.c | ||
| uart_bus_scc.c | ||
| uart_core.c | ||
| uart_cpu.h | ||
| uart_cpu_acpi.c | ||
| uart_cpu_acpi.h | ||
| uart_cpu_arm64.c | ||
| uart_cpu_fdt.c | ||
| uart_cpu_fdt.h | ||
| uart_cpu_powerpc.c | ||
| uart_cpu_x86.c | ||
| uart_dbg.c | ||
| uart_dev_imx.c | ||
| uart_dev_imx.h | ||
| uart_dev_lowrisc.c | ||
| uart_dev_lowrisc.h | ||
| uart_dev_msm.c | ||
| uart_dev_msm.h | ||
| uart_dev_mu.c | ||
| uart_dev_mvebu.c | ||
| uart_dev_ns8250.c | ||
| uart_dev_ns8250.h | ||
| uart_dev_pl011.c | ||
| uart_dev_quicc.c | ||
| uart_dev_sab82532.c | ||
| uart_dev_snps.c | ||
| uart_dev_ti8250.c | ||
| uart_dev_z8530.c | ||
| uart_if.m | ||
| uart_ppstypes.h | ||
| uart_subr.c | ||
| uart_tty.c | ||