Messages in this thread | | | Date | Fri, 23 Sep 2011 13:15:28 -0700 | From | Frank Rowand <> | Subject | Re: [PATCH V2] preempt-rt: allow immediate Magic SysRq output for PREEMPT_RT_FULL |
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On 09/23/11 10:36, Valdis.Kletnieks@vt.edu wrote: > 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?
Thanks for pointing that out. The "if (up->port.sysrq)" in this pattern already handles the case that I was trying to deal with in all of those drivers, except cpm_uart_core.c, so I was able to remove all the other drivers from V3 of the patch.
-Frank
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