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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-06-18 01:51:15 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-25 00:06:57 +1000 |
| commit | 61eece2d1707796fd45225ea3d20e9289251311c (patch) | |
| tree | aedae8f48fc56b12c13a311327825bc028bf9ef1 /arch/powerpc/kernel | |
| parent | 99f98f849cf13e5fac532979ccdb77dff07665db (diff) | |
| download | linux-61eece2d1707796fd45225ea3d20e9289251311c.tar.gz linux-61eece2d1707796fd45225ea3d20e9289251311c.tar.bz2 linux-61eece2d1707796fd45225ea3d20e9289251311c.zip | |
powerpc/interrupt: Refactor prep_irq_for_{user/kernel_enabled}_exit()
prep_irq_for_user_exit() is a superset of
prep_irq_for_kernel_enabled_exit().
Rename prep_irq_for_kernel_enabled_exit() as prep_irq_for_enabled_exit()
and have prep_irq_for_user_exit() use it.
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/20210617155116.2167984-17-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/interrupt.c | 29 |
1 files changed, 7 insertions, 22 deletions
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c index 58c7466d8ab3..f75eda2cba72 100644 --- a/arch/powerpc/kernel/interrupt.c +++ b/arch/powerpc/kernel/interrupt.c @@ -50,7 +50,7 @@ static inline bool exit_must_hard_disable(void) * 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_enabled_exit(bool restartable) { /* This must be done with RI=1 because tracing may touch vmaps */ trace_hardirqs_on(); @@ -77,29 +77,14 @@ static notrace __always_inline bool prep_irq_for_kernel_enabled_exit(bool restar 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()) - __hard_EE_RI_disable(); + bool ret; - /* This pattern matches prep_irq_for_idle */ - if (unlikely(lazy_irq_pending_nocheck())) { - if (exit_must_hard_disable()) { - local_paca->irq_happened |= PACA_IRQ_HARD_DIS; - __hard_RI_enable(); - } - trace_hardirqs_off(); + user_enter_irqoff(); + ret = prep_irq_for_enabled_exit(true); + if (!ret) user_exit_irqoff(); - return false; - } -#endif - return true; + return ret; } /* Has to run notrace because it is entered not completely "reconciled" */ @@ -469,7 +454,7 @@ again: * Stack store exit can't be restarted because the interrupt * stack frame might have been clobbered. */ - if (!prep_irq_for_kernel_enabled_exit(unlikely(stack_store))) { + if (!prep_irq_for_enabled_exit(unlikely(stack_store))) { /* * Replay pending soft-masked interrupts now. Don't * just local_irq_enabe(); local_irq_disable(); because |