forked from luck/tmp_suning_uos_patched
MIPS: oprofile: Enable backtrace on timer-based profiling
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@nsn.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8108/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -110,6 +110,12 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
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break;
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};
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/*
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* Always set the backtrace. This allows unsupported CPU types to still
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* use timer-based oprofile.
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*/
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ops->backtrace = op_mips_backtrace;
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if (!lmodel)
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return -ENODEV;
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@ -125,7 +131,6 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
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ops->start = op_mips_start;
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ops->stop = op_mips_stop;
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ops->cpu_type = lmodel->cpu_type;
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ops->backtrace = op_mips_backtrace;
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printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
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lmodel->cpu_type);
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