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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-03-16 11:41:55 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-04-14 15:04:19 +0200 |
| commit | 5a5a893c4ad897b8a36f846602895515b7407a71 (patch) | |
| tree | 66715e39506c375ca22a4e2b48823aebba1e1a72 /arch/powerpc/kernel/interrupt.c | |
| parent | powerpc/perf: Infrastructure to support checking of attr.config* (diff) | |
| download | linux-5a5a893c4ad897b8a36f846602895515b7407a71.tar.xz linux-5a5a893c4ad897b8a36f846602895515b7407a71.zip | |
powerpc/syscall: switch user_exit_irqoff and trace_hardirqs_off order
user_exit_irqoff() -> __context_tracking_exit -> vtime_user_exit
warns in __seqprop_assert due to lockdep thinking preemption is enabled
because trace_hardirqs_off() has not yet been called.
Switch the order of these two calls, which matches their ordering in
interrupt_enter_prepare.
Fixes: 5f0b6ac3905f ("powerpc/64/syscall: Reconcile interrupts")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210316104206.407354-2-npiggin@gmail.com
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/kernel/interrupt.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c index c4dd4b8f9cfa..fbabb49888d3 100644 --- a/arch/powerpc/kernel/interrupt.c +++ b/arch/powerpc/kernel/interrupt.c @@ -43,11 +43,11 @@ notrace long system_call_exception(long r3, long r4, long r5, if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) BUG_ON(irq_soft_mask_return() != IRQS_ALL_DISABLED); + trace_hardirqs_off(); /* finish reconciling */ + CT_WARN_ON(ct_state() == CONTEXT_KERNEL); user_exit_irqoff(); - trace_hardirqs_off(); /* finish reconciling */ - if (!IS_ENABLED(CONFIG_BOOKE) && !IS_ENABLED(CONFIG_40x)) BUG_ON(!(regs->msr & MSR_RI)); BUG_ON(!(regs->msr & MSR_PR)); |