linux-kernel - Re: -mm merge plans for 2.6.21

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Message-Id: <20070208154442.678a214b.akpm@linux-foundation.org>
Date:	Thu, 8 Feb 2007 15:44:42 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: -mm merge plans for 2.6.21

On Fri, 9 Feb 2007 00:29:06 +0100 (MET)
Jan Engelhardt <jengelh@...ux01.gwdg.de> wrote:

> 
> On Feb 8 2007 15:07, Andrew Morton wrote:
> 
> >scheduled-removal-of-sa_xxx-interrupt-flags-fixups.patch
> >scheduled-removal-of-sa_xxx-interrupt-flags-fixups-2.patch
> >scheduled-removal-of-sa_xxx-interrupt-flags.patch
> >scheduled-removal-of-sa_xxx-interrupt-flags-ata-fix.patch
> >
> > This removes SA_INTERRUPT and friends, so 10000000 external drivers won't
> > compile any more.  I think I'd prefer to find a way to get usage of SA_* to
> > spit a deprecated warning.
> 
> Here's an idea:
> 
> #define SA_INTERRUPT sa_interrupt_with_warning()
> static inline int sa_interrupt_with_warning(void) {
>     if(more_or_less_often)
>         printk(fat_warning);
>     return 0x123456; /* whatever numerical value it is */
> }
> 

Yeah, this seems to work.

--- a/include/linux/interrupt.h~deprecate-sa_interrupt-and-friends
+++ a/include/linux/interrupt.h
@@ -54,17 +54,32 @@
  * Migration helpers. Scheduled for removal in 1/2007
  * Do not use for new code !
  */
-#define SA_INTERRUPT		IRQF_DISABLED
-#define SA_SAMPLE_RANDOM	IRQF_SAMPLE_RANDOM
-#define SA_SHIRQ		IRQF_SHARED
-#define SA_PROBEIRQ		IRQF_PROBE_SHARED
-#define SA_PERCPU		IRQF_PERCPU
-
-#define SA_TRIGGER_LOW		IRQF_TRIGGER_LOW
-#define SA_TRIGGER_HIGH		IRQF_TRIGGER_HIGH
-#define SA_TRIGGER_FALLING	IRQF_TRIGGER_FALLING
-#define SA_TRIGGER_RISING	IRQF_TRIGGER_RISING
-#define SA_TRIGGER_MASK		IRQF_TRIGGER_MASK
+#define emit_old_interrupt_name(old, new)				\
+static inline unsigned __deprecated emit_old_interrupt_name##old(void)	\
+{									\
+	return (new);							\
+}
+
+emit_old_interrupt_name(SA_INTERRUPT, IRQF_DISABLED)
+#define SA_INTERRUPT emit_old_interrupt_nameSA_INTERRUPT()
+emit_old_interrupt_name(SA_SAMPLE_RANDOM, IRQF_SAMPLE_RANDOM)
+#define SA_SAMPLE_RANDOM emit_old_interrupt_nameSA_SAMPLE_RANDOM()
+emit_old_interrupt_name(SA_SHIRQ, IRQF_SHARED)
+#define SA_SHIRQ emit_old_interrupt_nameSA_SHIRQ()
+emit_old_interrupt_name(SA_PROBEIRQ, IRQF_PROBE_SHARED)
+#define SA_PROBEIRQ emit_old_interrupt_nameSA_PROBEIRQ()
+emit_old_interrupt_name(SA_PERCPU, IRQF_PERCPU)
+#define SA_PERCPU emit_old_interrupt_nameSA_PERCPU()
+emit_old_interrupt_name(SA_TRIGGER_LOW, IRQF_TRIGGER_LOW)
+#define SA_TRIGGER_LOW emit_old_interrupt_nameSA_TRIGGER_LOW()
+emit_old_interrupt_name(SA_TRIGGER_HIGH, IRQF_TRIGGER_HIGH)
+#define SA_TRIGGER_HIGH emit_old_interrupt_nameSA_TRIGGER_HIGH()
+emit_old_interrupt_name(SA_TRIGGER_FALLING, IRQF_TRIGGER_FALLING)
+#define SA_TRIGGER_FALLING emit_old_interrupt_nameSA_TRIGGER_FALLING()
+emit_old_interrupt_name(SA_TRIGGER_RISING, IRQF_TRIGGER_RISING)
+#define SA_TRIGGER_RISING emit_old_interrupt_nameSA_TRIGGER_RISING()
+emit_old_interrupt_name(SA_TRIGGER_MASK, IRQF_TRIGGER_MASK)
+#define SA_TRIGGER_MASK emit_old_interrupt_nameSA_TRIGGER_MASK()
 
 typedef irqreturn_t (*irq_handler_t)(int, void *);
 
_

For some reason

	enum foo {
		...
	} __deprecated;

doesn't work.
-
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