Allow unsupported CPU types to use backtrace with timer-based profiling. Some CPUs (notably OCTEON) lack architecture-specific oprofile driver. In such case oprofile can fallback to timer-based mode, and arch code can still provide the backtrace functionality. So just set up the backtrace hook always. Signed-off-by: Aaro Koskinen <aaro.koskinen@xxxxxxx> --- arch/mips/oprofile/common.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c index e747324..6183d05 100644 --- a/arch/mips/oprofile/common.c +++ b/arch/mips/oprofile/common.c @@ -106,6 +106,12 @@ int __init oprofile_arch_init(struct oprofile_operations *ops) break; }; + /* + * Always set the backtrace. This allows unsupported CPU types to still + * use timer-based oprofile. + */ + ops->backtrace = op_mips_backtrace; + if (!lmodel) return -ENODEV; @@ -121,7 +127,6 @@ int __init oprofile_arch_init(struct oprofile_operations *ops) ops->start = op_mips_start; ops->stop = op_mips_stop; ops->cpu_type = lmodel->cpu_type; - ops->backtrace = op_mips_backtrace; printk(KERN_INFO "oprofile: using %s performance monitoring.\n", lmodel->cpu_type); -- 2.1.2
