* Ananth N Mavinakayanahalli <[email protected]> [2013-03-22 20:48:38]:
> From: Ananth N Mavinakayanahalli <[email protected]> > > Powerpc has many trap variants that could be used by entities like gdb. > Currently, running gdb on a program being traced by uprobes causes an > endless loop since uprobes doesn't understand that the trap was inserted > by some other entity and a SIGTRAP needs to be delivered. > > Teach uprobes to ignore breakpoints that do not belong to it. > > Signed-off-by: Ananth N Mavinakayanahalli <[email protected]> Acked-by: Srikar Dronamraju <[email protected]> > --- > arch/powerpc/kernel/uprobes.c | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > Index: linux-3.9-rc3/arch/powerpc/kernel/uprobes.c > =================================================================== > --- linux-3.9-rc3.orig/arch/powerpc/kernel/uprobes.c > +++ linux-3.9-rc3/arch/powerpc/kernel/uprobes.c > @@ -31,6 +31,16 @@ > #define UPROBE_TRAP_NR UINT_MAX > > /** > + * is_trap_insn - check if the instruction is a trap variant > + * @insn: instruction to be checked. > + * Returns true if @insn is a trap variant. > + */ > +bool is_trap_insn(uprobe_opcode_t *insn) > +{ > + return (is_trap(*insn)); > +} > + > +/** > * arch_uprobe_analyze_insn > * @mm: the probed address space. > * @arch_uprobe: the probepoint information. -- Thanks and Regards Srikar Dronamraju -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
