diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2020-02-25 20:35:36 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-04-01 05:42:13 +0300 |
| commit | 3282a3da25bd63fdb7240bc35dbdefa4b1947005 (patch) | |
| tree | dd8f9c2c31869a30d2340d623ecb167174322eff /arch/powerpc/include | |
| parent | 993c670a4dfb2bded39d96f11df763c657d15a41 (diff) | |
| download | linux-3282a3da25bd63fdb7240bc35dbdefa4b1947005.tar.xz | |
powerpc/64: Implement soft interrupt replay in C
When local_irq_enable() finds a pending soft-masked interrupt, it
"replays" it by setting up registers like the initial interrupt entry,
then calls into the low level handler to set up an interrupt stack
frame and process the interrupt.
This is not necessary, and uses more stack than needed. The high level
interrupt handler can be called directly from C, with just pt_regs set
up on stack. This should be faster and use less stack.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-28-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/hw_irq.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index 310583e62bd9..0e9a9598f91f 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -52,7 +52,6 @@ #ifndef __ASSEMBLY__ extern void replay_system_reset(void); -extern void __replay_interrupt(unsigned int vector); extern void timer_interrupt(struct pt_regs *); extern void timer_broadcast_interrupt(void); |