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SubjectRe: [PATCH V2] preempt-rt: allow immediate Magic SysRq output for PREEMPT_RT_FULL
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On Thu, 22 Sep 2011 14:05:56 PDT, Frank Rowand said:
> Change from V1 to V2: add drivers/tty/serial/8250.c

> drivers/tty/serial/cpm_uart/cpm_uart_core.c | 2 1 + 1 - 0 !
> drivers/tty/serial/mfd.c | 2 1 + 1 - 0 !
> drivers/tty/serial/nwpserial.c | 2 1 + 1 - 0 !
> drivers/tty/serial/omap-serial.c | 2 1 + 1 - 0 !
> drivers/tty/serial/sunhv.c | 4 2 + 2 - 0 !
> drivers/tty/serial/sunsab.c | 2 1 + 1 - 0 !
> drivers/tty/serial/sunsu.c | 2 1 + 1 - 0 !
> drivers/tty/serial/sunzilog.c | 2 1 + 1 - 0 !
> drivers/tty/serial/uartlite.c | 2 1 + 1 - 0 !
> drivers/tty/serial/xilinx_uartps.c | 2 1 + 1 - 0 !

> if (up->port.sysrq)
> locked = 0;
> - else if (oops_in_progress) {
> + else if (oops_in_progress || sysrq_in_progress) {
> locked = spin_trylock(&up->port.lock);
> } else
> spin_lock(&up->port.lock);

Is it time to create a helper function for this chunk of code that appears
in almost identical form in a dozen drivers?
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