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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-06-18 01:51:14 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-25 00:06:57 +1000 |
| commit | 99f98f849cf13e5fac532979ccdb77dff07665db (patch) | |
| tree | f9b26482db09a31d9f08cb030be13d713e209bf9 /arch/powerpc | |
| parent | a214ee8802adb864d175ea6ca4176223bcc11d2b (diff) | |
| download | linux-99f98f849cf13e5fac532979ccdb77dff07665db.tar.gz linux-99f98f849cf13e5fac532979ccdb77dff07665db.tar.bz2 linux-99f98f849cf13e5fac532979ccdb77dff07665db.zip | |
powerpc/interrupt: Interchange prep_irq_for_{kernel_enabled/user}_exit()
prep_irq_for_user_exit() is a superset of
prep_irq_for_kernel_enabled_exit(). In order to allow refactoring in
following patch, interchange the two. This will allow
prep_irq_for_user_exit() to call a renamed version of
prep_irq_for_kernel_enabled_exit().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210617155116.2167984-16-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/interrupt.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c index 33efa01ec63f..58c7466d8ab3 100644 --- a/arch/powerpc/kernel/interrupt.c +++ b/arch/powerpc/kernel/interrupt.c @@ -46,27 +46,28 @@ static inline bool exit_must_hard_disable(void) * This should be called with local irqs disabled, but if they were previously * enabled when the interrupt handler returns (indicating a process-context / * synchronous interrupt) then irqs_enabled should be true. + * + * restartable is true then EE/RI can be left on because interrupts are handled + * with a restart sequence. */ -static notrace __always_inline bool prep_irq_for_user_exit(void) +static notrace __always_inline bool prep_irq_for_kernel_enabled_exit(bool restartable) { - user_enter_irqoff(); /* This must be done with RI=1 because tracing may touch vmaps */ trace_hardirqs_on(); #ifdef CONFIG_PPC32 __hard_EE_RI_disable(); #else - if (exit_must_hard_disable()) + if (exit_must_hard_disable() || !restartable) __hard_EE_RI_disable(); /* This pattern matches prep_irq_for_idle */ if (unlikely(lazy_irq_pending_nocheck())) { - if (exit_must_hard_disable()) { + if (exit_must_hard_disable() || !restartable) { local_paca->irq_happened |= PACA_IRQ_HARD_DIS; __hard_RI_enable(); } trace_hardirqs_off(); - user_exit_irqoff(); return false; } @@ -74,28 +75,26 @@ static notrace __always_inline bool prep_irq_for_user_exit(void) return true; } -/* - * restartable is true then EE/RI can be left on because interrupts are handled - * with a restart sequence. - */ -static notrace __always_inline bool prep_irq_for_kernel_enabled_exit(bool restartable) +static notrace __always_inline bool prep_irq_for_user_exit(void) { + user_enter_irqoff(); /* This must be done with RI=1 because tracing may touch vmaps */ trace_hardirqs_on(); #ifdef CONFIG_PPC32 __hard_EE_RI_disable(); #else - if (exit_must_hard_disable() || !restartable) + if (exit_must_hard_disable()) __hard_EE_RI_disable(); /* This pattern matches prep_irq_for_idle */ if (unlikely(lazy_irq_pending_nocheck())) { - if (exit_must_hard_disable() || !restartable) { + if (exit_must_hard_disable()) { local_paca->irq_happened |= PACA_IRQ_HARD_DIS; __hard_RI_enable(); } trace_hardirqs_off(); + user_exit_irqoff(); return false; } |