On Mon, 08 Nov 2010 12:33:23 -0800 Mike Waychison wrote: > It is very useful to provide some means to force the kernel logs to make it out > via the kmsg_oops implementations on the console. Add a new option 'Y' to > sysrq to allow dumping of logs to kmsg_dumper drivers. > > Signed-off-by: Mike Waychison <mikew@xxxxxxxxxx> Hi, Please add 'y' to Documentation/sysrq.txt . > --- > drivers/char/sysrq.c | 14 +++++++++++++- > 1 files changed, 13 insertions(+), 1 deletions(-) > > diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c > index eaa5d3e..058d3c8 100644 > --- a/drivers/char/sysrq.c > +++ b/drivers/char/sysrq.c > @@ -41,6 +41,7 @@ > #include <linux/oom.h> > #include <linux/slab.h> > #include <linux/input.h> > +#include <linux/kmsg_dump.h> > > #include <asm/ptrace.h> > #include <asm/irq_regs.h> > @@ -395,6 +396,17 @@ static struct sysrq_key_op sysrq_unrt_op = { > .enable_mask = SYSRQ_ENABLE_RTNICE, > }; > > +static void sysrq_handle_softdump(int key) > +{ > + kmsg_dump(KMSG_DUMP_SOFT, NULL); > +} > +static struct sysrq_key_op sysrq_softdump_op = { > + .handler = sysrq_handle_softdump, > + .help_msg = "soft-dump(Y)", > + .action_msg = "Trigger a soft dump", > + .enable_mask = SYSRQ_ENABLE_DUMP, > +}; > + > /* Key Operations table and lock */ > static DEFINE_SPINLOCK(sysrq_key_table_lock); > > @@ -451,7 +463,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = { > /* x: May be registered on ppc/powerpc for xmon */ > NULL, /* x */ > /* y: May be registered on sparc64 for global register dump */ > - NULL, /* y */ > + &sysrq_softdump_op, /* y */ > &sysrq_ftrace_dump_op, /* z */ > }; --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html