[Xenomai-core] [PATCH] fix i386 nmi build for 2.6.19

[Xenomai-core] [PATCH] fix i386 nmi build for 2.6.19

[Jan Kiszka]

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As the subject states. Compiles and runs fine - which implies that the
whole 2.6.19-ipipe-1.6-00 patch works perfectly on my Thinkpad. Also
right now while typing this mail. :)

Jan


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Index: ksrc/arch/i386/nmi.c
===================================================================
--- ksrc/arch/i386/nmi.c	(Revision 1914)
+++ ksrc/arch/i386/nmi.c	(Arbeitskopie)
@@ -72,11 +72,13 @@ static rthal_nmi_wd_t rthal_nmi_wds[NR_C
 static unsigned long rthal_nmi_perfctr_msr;
 static unsigned int rthal_nmi_p4_cccr_val;
 static void (*rthal_nmi_emergency) (struct pt_regs *);
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
 static void (*rthal_linux_nmi_tick) (struct pt_regs *);
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 #define MSR_P4_IQ_CCCR0		0x36C
-#define nmi_active (nmi_watchdog != NMI_NONE)
+#define rthal_nmi_active (nmi_watchdog != NMI_NONE)
 static inline void wrmsrl(unsigned long msr, unsigned long long val)
 {
 	unsigned long lo, hi;
@@ -84,9 +86,15 @@ static inline void wrmsrl(unsigned long 
 	hi = val >> 32;
 	wrmsr(msr, lo, hi);
 }
-#else /* Linux >= 2.6 */
+#else /* Linux 2.6.0..18 */
 extern int nmi_active;
-#endif /* Linux >= 2.6 */
+#define rthal_nmi_active	nmi_active
+#endif /* Linux 2.6.0..18 */
+
+#else /* Linux >= 2.6.19 */
+static int (*rthal_linux_nmi_tick) (struct pt_regs *, unsigned);
+#define rthal_nmi_active	atomic_read(&nmi_active)
+#endif /* Linux >= 2.6.19 */
 
 static void rthal_touch_nmi_watchdog(void)
 {
@@ -105,7 +113,15 @@ static void rthal_touch_nmi_watchdog(voi
 	}
 }
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+#define CALL_LINUX_NMI		rthal_linux_nmi_tick(regs)
+#define NMI_RETURN		return
 static void rthal_nmi_watchdog_tick(struct pt_regs *regs)
+#else /* Linux >= 2.6.19 */
+#define CALL_LINUX_NMI		rthal_linux_nmi_tick(regs, reason)
+#define NMI_RETURN		return 1
+static int rthal_nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
+#endif /* Linux >= 2.6.19 */
 {
 	int cpu = rthal_processor_id();
 	rthal_nmi_wd_t *wd = &rthal_nmi_wds[cpu];
@@ -125,7 +141,7 @@ static void rthal_nmi_watchdog_tick(stru
 
 	if ((long long)(now - wd->next_linux_check) >= 0) {
 
-		rthal_linux_nmi_tick(regs);
+		CALL_LINUX_NMI;
 
 		do {
 			wd->next_linux_check += RTHAL_CPU_FREQ;
@@ -150,6 +166,7 @@ static void rthal_nmi_watchdog_tick(stru
 	}
 	
 	wrmsrl(wd->perfctr_msr, now - wd->next_linux_check);
+	NMI_RETURN;
 }
 
 static int earlyshots_read_proc(char *page,
@@ -175,7 +192,7 @@ static int earlyshots_read_proc(char *pa
 
 int rthal_nmi_request(void (*emergency) (struct pt_regs *))
 {
-	if (!nmi_active || !nmi_watchdog_tick)
+	if (!rthal_nmi_active || !nmi_watchdog_tick)
 		return -ENODEV;
 
 	if (rthal_linux_nmi_tick)
Index: ChangeLog
===================================================================
--- ChangeLog	(Revision 1914)
+++ ChangeLog	(Arbeitskopie)
@@ -1,3 +1,7 @@
+2006-12-02  Jan Kiszka  <jan.kiszka@domain.hid>
+
+	* ksrc/arch/i386/nmi.c: Fix build against 2.6.19.
+
 2006-12-02  Jeff Webb <jeff.webb@domain.hid>
 
 	* ksrc/skins/posix/syscall.c (__pse51_sem_timed_wait): Fix return


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Re: [Xenomai-core] [PATCH] fix i386 nmi build for 2.6.19

[Philippe Gerum]

On Sat, 2006-12-02 at 12:27 +0100, Jan Kiszka wrote:
> As the subject states. Compiles and runs fine - which implies that the
> whole 2.6.19-ipipe-1.6-00 patch works perfectly on my Thinkpad. Also
> right now while typing this mail. :)
> 

Nice. Merged, thanks.

> Jan
> 
> _______________________________________________
> Xenomai-core mailing list
> Xenomai-core@domain.hid
> https://mail.gna.org/listinfo/xenomai-core
-- 
Philippe.