powerpc/pseries: Mark accumulate_stolen_time() as notrace
accumulate_stolen_time() is called prior to interrupt state being reconciled, which can trip the warning in arch_local_irq_restore(): WARNING: CPU: 5 PID: 1017 at arch/powerpc/kernel/irq.c:258 .arch_local_irq_restore+0x9c/0x130 ... NIP .arch_local_irq_restore+0x9c/0x130 LR .rb_start_commit+0x38/0x80 Call Trace: .ring_buffer_lock_reserve+0xe4/0x620 .trace_function+0x44/0x210 .function_trace_call+0x148/0x170 .ftrace_ops_no_ops+0x180/0x1d0 ftrace_call+0x4/0x8 .accumulate_stolen_time+0x1c/0xb0 decrementer_common+0x124/0x160 For now just mark it as notrace. We may change the ordering to call it after interrupt state has been reconciled, but that is a larger change. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20191024055932.27940-1-mpe@ellerman.id.aualistair/sunxi64-5.5-dsi
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@ -232,7 +232,7 @@ static u64 scan_dispatch_log(u64 stop_tb)
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* Accumulate stolen time by scanning the dispatch trace log.
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* Called on entry from user mode.
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*/
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void accumulate_stolen_time(void)
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void notrace accumulate_stolen_time(void)
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{
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u64 sst, ust;
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unsigned long save_irq_soft_mask = irq_soft_mask_return();
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