Hi Steve,
On 22/10/2024 07:28, Steven Rostedt wrote:
On Mon, 21 Oct 2024 11:44:42 +0200
Jean-Michel Hautbois <jeanmichel.hautbois@xxxxxxxxxx> wrote:
The TRACE_IRQFLAGS_SUPPORT requires the architecture to call
trace_hardirqs_off() when interrupts are disabled and
trace_hardirqs_on() when they are enabled.
Add those calls to do_IRQ function.
Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@xxxxxxxxxx>
---
arch/m68k/Kconfig | 1 +
arch/m68k/kernel/irq.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index cc26df907bfe3c8143a931d259eceabb16af7411..ab3375475721fa63418c40d4ba6ac76679ebc77d 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -39,6 +39,7 @@ config M68K
select OLD_SIGSUSPEND3
select UACCESS_MEMCPY if !MMU
select ZONE_DMA
+ select TRACE_IRQFLAGS_SUPPORT
config CPU_BIG_ENDIAN
def_bool y
diff --git a/arch/m68k/kernel/irq.c b/arch/m68k/kernel/irq.c
index 9ab4f550342e5de11c528f55781432675ffd66bf..74cf60ebbc4bca51f3caa4046dbd2bdb02355711 100644
--- a/arch/m68k/kernel/irq.c
+++ b/arch/m68k/kernel/irq.c
@@ -21,9 +21,11 @@ asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
{
struct pt_regs *oldregs = set_irq_regs(regs);
+ trace_hardirqs_off();
irq_enter();
generic_handle_irq(irq);
irq_exit();
+ trace_hardirqs_on();
This part of the patch shouldn't be needed because those shoudl be
called by irq_enter() and irq_exit(). Does this not work if you don't
have these?
Thanks for your quick review !
Indeed, it works without those lines, so the patch is now a one-liner
:-). I will wait for the second part to be reviewed before sending v2.
JM
