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Date: Wed, 14 Jan 2009 15:43:54 -0800
From: Mike Travis <travis@....com>
To: Ingo Molnar <mingo@...e.hu>
CC: Rusty Russell <rusty@...tcorp.com.au>,
Yinghai Lu <yinghai@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>, Tony Luck <tony.luck@...el.com>,
IA64 <linux-ia64@...r.kernel.org>,
Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org,
David Howells <dhowells@...hat.com>,
Koichi Yasutake <yasutake.koichi@...panasonic.com>,
linux-am33-list@...hat.com,
"David S. Miller" <davem@...emloft.net>,
SPARC <sparclinux@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: crash: IP: [<ffffffff80478092>] __bitmap_intersects+0x48/0x73
[PATCH supplied]
Ingo Molnar wrote:
> also, with latest tip/master the ia64 cross-build still fails:
>
> /home/mingo/tip/arch/ia64/kernel/irq_ia64.c: In function `ia64_handle_irq':
> /home/mingo/tip/arch/ia64/kernel/irq_ia64.c:498: error: structure has no member named `irqs'
> /home/mingo/tip/arch/ia64/kernel/irq_ia64.c:500: error: structure has no member named `irqs'
> /home/mingo/tip/arch/ia64/kernel/irq_ia64.c: In function `ia64_process_pending_intr':
> /home/mingo/tip/arch/ia64/kernel/irq_ia64.c:556: error: structure has no member named `irqs'
> /home/mingo/tip/arch/ia64/kernel/irq_ia64.c:558: error: structure has no member named `irqs'
> make[2]: *** [arch/ia64/kernel/irq_ia64.o] Error 1
> make[2]: *** Waiting for unfinished jobs....
>
> and so does the MIPS build:
>
> /home/mingo/tip/arch/mips/sgi-ip22/ip22-int.c: In function 'indy_buserror_irq':
> /home/mingo/tip/arch/mips/sgi-ip22/ip22-int.c:158: error: 'struct kernel_stat' has no member named 'irqs'
> make[2]: *** [arch/mips/sgi-ip22/ip22-int.o] Error 1
> make[2]: *** Waiting for unfinished jobs....
> /home/mingo/tip/arch/mips/sgi-ip22/ip22-time.c: In function 'indy_8254timer_irq':
> /home/mingo/tip/arch/mips/sgi-ip22/ip22-time.c:125: error: 'struct kernel_stat' has no member named 'irqs'
> make[2]: *** [arch/mips/sgi-ip22/ip22-time.o] Error 1
> make[1]: *** [arch/mips/sgi-ip22] Error 2
> make[1]: *** Waiting for unfinished jobs....
>
> Ingo
Hi Ingo,
This appears to be a fallout of the sparse irqs changes. Here is a suggested patch.
Btw, my ia64 build fails under tip/cpus4096 because this commit is not present:
commit e65e49d0f3714f4a6a42f6f6a19926ba33fcda75
Author: Mike Travis <travis@....com>
Date: Mon Jan 12 15:27:13 2009 -0800
irq: update all arches for new irq_desc
With that patch also applied, the defconfig for ia64 builds correctly.
(Sorry, cannot test build the others right now.)
Thanks,
Mike
---
Subject: irq: fix build errors referencing old kstat.irqs array
Impact: fix build error
Since the SPARSE IRQS changes redefined how the kstat irqs are
organized, arch's must use the new accessor function:
kstat_incr_irqs_this_cpu(irq, DESC);
If CONFIG_SPARSE_IRQS is set, then DESC is a pointer to the
irq_desc which has a pointer to the kstat_irqs. If not, then
the .irqs field of struct kernel_stat is used instead.
Signed-off-by: Mike Travis <travis@....com>
# IA64
Cc: Tony Luck <tony.luck@...el.com>
Cc: <linux-ia64@...r.kernel.org>
# MIPS
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: <linux-mips@...ux-mips.org>
# MN10300
Cc: David Howells <dhowells@...hat.com>
Cc: Koichi Yasutake <yasutake.koichi@...panasonic.com>
Cc: <linux-am33-list@...hat.com>
# SPARC
Cc: David S. Miller <davem@...emloft.net>
Cc: <sparclinux@...r.kernel.org>
---
arch/ia64/kernel/irq_ia64.c | 12 ++++++++----
arch/mips/kernel/smtc.c | 4 +++-
arch/mips/sgi-ip22/ip22-int.c | 2 +-
arch/mips/sgi-ip22/ip22-time.c | 2 +-
arch/mips/sibyte/bcm1480/smp.c | 3 ++-
arch/mips/sibyte/sb1250/smp.c | 3 ++-
arch/mn10300/kernel/mn10300-watchdog.c | 3 ++-
arch/sparc/kernel/time_64.c | 2 +-
8 files changed, 20 insertions(+), 11 deletions(-)
--- linux-2.6-for-ingo.orig/arch/ia64/kernel/irq_ia64.c
+++ linux-2.6-for-ingo/arch/ia64/kernel/irq_ia64.c
@@ -493,11 +493,13 @@ ia64_handle_irq (ia64_vector vector, str
saved_tpr = ia64_getreg(_IA64_REG_CR_TPR);
ia64_srlz_d();
while (vector != IA64_SPURIOUS_INT_VECTOR) {
+ struct irq_desc *desc = irq_to_desc(vector);
+
if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
smp_local_flush_tlb();
- kstat_this_cpu.irqs[vector]++;
+ kstat_incr_irqs_this_cpu(vector, desc);
} else if (unlikely(IS_RESCHEDULE(vector)))
- kstat_this_cpu.irqs[vector]++;
+ kstat_incr_irqs_this_cpu(vector, desc);
else {
int irq = local_vector_to_irq(vector);
@@ -551,11 +553,13 @@ void ia64_process_pending_intr(void)
* Perform normal interrupt style processing
*/
while (vector != IA64_SPURIOUS_INT_VECTOR) {
+ struct irq_desc *desc = irq_to_desc(vector);
+
if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
smp_local_flush_tlb();
- kstat_this_cpu.irqs[vector]++;
+ kstat_incr_irqs_this_cpu(vector, desc);
} else if (unlikely(IS_RESCHEDULE(vector)))
- kstat_this_cpu.irqs[vector]++;
+ kstat_incr_irqs_this_cpu(vector, desc);
else {
struct pt_regs *old_regs = set_irq_regs(NULL);
int irq = local_vector_to_irq(vector);
--- linux-2.6-for-ingo.orig/arch/mips/kernel/smtc.c
+++ linux-2.6-for-ingo/arch/mips/kernel/smtc.c
@@ -921,11 +921,13 @@ void ipi_decode(struct smtc_ipi *pipi)
struct clock_event_device *cd;
void *arg_copy = pipi->arg;
int type_copy = pipi->type;
+ int irq = MIPS_CPU_IRQ_BASE + 1;
+
smtc_ipi_nq(&freeIPIq, pipi);
switch (type_copy) {
case SMTC_CLOCK_TICK:
irq_enter();
- kstat_this_cpu.irqs[MIPS_CPU_IRQ_BASE + 1]++;
+ kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
cd = &per_cpu(mips_clockevent_device, cpu);
cd->event_handler(cd);
irq_exit();
--- linux-2.6-for-ingo.orig/arch/mips/sgi-ip22/ip22-int.c
+++ linux-2.6-for-ingo/arch/mips/sgi-ip22/ip22-int.c
@@ -155,7 +155,7 @@ static void indy_buserror_irq(void)
int irq = SGI_BUSERR_IRQ;
irq_enter();
- kstat_this_cpu.irqs[irq]++;
+ kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
ip22_be_interrupt(irq);
irq_exit();
}
--- linux-2.6-for-ingo.orig/arch/mips/sgi-ip22/ip22-time.c
+++ linux-2.6-for-ingo/arch/mips/sgi-ip22/ip22-time.c
@@ -122,7 +122,7 @@ void indy_8254timer_irq(void)
char c;
irq_enter();
- kstat_this_cpu.irqs[irq]++;
+ kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
printk(KERN_ALERT "Oops, got 8254 interrupt.\n");
ArcRead(0, &c, 1, &cnt);
ArcEnterInteractiveMode();
--- linux-2.6-for-ingo.orig/arch/mips/sibyte/bcm1480/smp.c
+++ linux-2.6-for-ingo/arch/mips/sibyte/bcm1480/smp.c
@@ -178,9 +178,10 @@ struct plat_smp_ops bcm1480_smp_ops = {
void bcm1480_mailbox_interrupt(void)
{
int cpu = smp_processor_id();
+ int irq = K_BCM1480_INT_MBOX_0_0;
unsigned int action;
- kstat_this_cpu.irqs[K_BCM1480_INT_MBOX_0_0]++;
+ kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
/* Load the mailbox register to figure out what we're supposed to do */
action = (__raw_readq(mailbox_0_regs[cpu]) >> 48) & 0xffff;
--- linux-2.6-for-ingo.orig/arch/mips/sibyte/sb1250/smp.c
+++ linux-2.6-for-ingo/arch/mips/sibyte/sb1250/smp.c
@@ -166,9 +166,10 @@ struct plat_smp_ops sb_smp_ops = {
void sb1250_mailbox_interrupt(void)
{
int cpu = smp_processor_id();
+ int irq = K_INT_MBOX_0;
unsigned int action;
- kstat_this_cpu.irqs[K_INT_MBOX_0]++;
+ kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
/* Load the mailbox register to figure out what we're supposed to do */
action = (____raw_readq(mailbox_regs[cpu]) >> 48) & 0xffff;
--- linux-2.6-for-ingo.orig/arch/mn10300/kernel/mn10300-watchdog.c
+++ linux-2.6-for-ingo/arch/mn10300/kernel/mn10300-watchdog.c
@@ -130,6 +130,7 @@ void watchdog_interrupt(struct pt_regs *
* the stack NMI-atomically, it's safe to use smp_processor_id().
*/
int sum, cpu = smp_processor_id();
+ int irq = NMIIRQ;
u8 wdt, tmp;
wdt = WDCTR & ~WDCTR_WDCNE;
@@ -138,7 +139,7 @@ void watchdog_interrupt(struct pt_regs *
NMICR = NMICR_WDIF;
nmi_count(cpu)++;
- kstat_this_cpu.irqs[NMIIRQ]++;
+ kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
sum = irq_stat[cpu].__irq_count;
if (last_irq_sums[cpu] == sum) {
--- linux-2.6-for-ingo.orig/arch/sparc/kernel/time_64.c
+++ linux-2.6-for-ingo/arch/sparc/kernel/time_64.c
@@ -727,7 +727,7 @@ void timer_interrupt(int irq, struct pt_
irq_enter();
- kstat_this_cpu.irqs[0]++;
+ kstat_incr_irqs_this_cpu(0, irq_to_desc(0));
if (unlikely(!evt->event_handler)) {
printk(KERN_WARNING
--
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