| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1233186180-29883-42-git-send-email-mingo@elte.hu>
Date: Wed, 28 Jan 2009 23:41:47 +0000
From: Ingo Molnar <mingo@...e.hu>
To: linux-kernel@...r.kernel.org
Cc: "H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...e.hu>
Subject: [PATCH 041/114] x86, apic: streamline the ->multi_timer_check() quirk
only NUMAQ uses this quirk: to prevent the timer IRQ from being added
on secondary nodes.
All other genapic templates can have a NULL ->multi_timer_check()
callback.
Also, extend the generic code to treat a NULL pointer accordingly.
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
arch/x86/include/asm/bigsmp/apic.h | 5 -----
arch/x86/include/asm/es7000/apic.h | 5 -----
arch/x86/include/asm/mach-default/mach_apic.h | 5 -----
arch/x86/include/asm/mach-generic/mach_apic.h | 1 -
arch/x86/include/asm/numaq/apic.h | 2 +-
arch/x86/include/asm/summit/apic.h | 5 -----
arch/x86/kernel/io_apic.c | 11 ++++++++---
arch/x86/mach-generic/bigsmp.c | 2 +-
arch/x86/mach-generic/default.c | 2 +-
arch/x86/mach-generic/es7000.c | 2 +-
arch/x86/mach-generic/numaq.c | 2 +-
arch/x86/mach-generic/summit.c | 2 +-
12 files changed, 14 insertions(+), 30 deletions(-)
diff --git a/arch/x86/include/asm/bigsmp/apic.h b/arch/x86/include/asm/bigsmp/apic.h
index 321ea47..df59298 100644
--- a/arch/x86/include/asm/bigsmp/apic.h
+++ b/arch/x86/include/asm/bigsmp/apic.h
@@ -62,11 +62,6 @@ static inline void bigsmp_setup_apic_routing(void)
"Physflat", nr_ioapics);
}
-static inline int multi_timer_check(int apic, int irq)
-{
- return (0);
-}
-
static inline int apicid_to_node(int logical_apicid)
{
return apicid_2_node[hard_smp_processor_id()];
diff --git a/arch/x86/include/asm/es7000/apic.h b/arch/x86/include/asm/es7000/apic.h
index f118300..632e4cd 100644
--- a/arch/x86/include/asm/es7000/apic.h
+++ b/arch/x86/include/asm/es7000/apic.h
@@ -82,11 +82,6 @@ static inline void es7000_setup_apic_routing(void)
nr_ioapics, cpus_addr(*es7000_target_cpus())[0]);
}
-static inline int multi_timer_check(int apic, int irq)
-{
- return 0;
-}
-
static inline int apicid_to_node(int logical_apicid)
{
return 0;
diff --git a/arch/x86/include/asm/mach-default/mach_apic.h b/arch/x86/include/asm/mach-default/mach_apic.h
index d446774..f418d47 100644
--- a/arch/x86/include/asm/mach-default/mach_apic.h
+++ b/arch/x86/include/asm/mach-default/mach_apic.h
@@ -104,11 +104,6 @@ static inline physid_mask_t default_ioapic_phys_id_map(physid_mask_t phys_map)
return phys_map;
}
-static inline int multi_timer_check(int apic, int irq)
-{
- return 0;
-}
-
/* Mapping from cpu number to logical apicid */
static inline int cpu_to_logical_apicid(int cpu)
{
diff --git a/arch/x86/include/asm/mach-generic/mach_apic.h b/arch/x86/include/asm/mach-generic/mach_apic.h
index ddf3692..bdea0a7 100644
--- a/arch/x86/include/asm/mach-generic/mach_apic.h
+++ b/arch/x86/include/asm/mach-generic/mach_apic.h
@@ -3,7 +3,6 @@
#include <asm/genapic.h>
-#define multi_timer_check (apic->multi_timer_check)
#define apicid_to_node (apic->apicid_to_node)
#define cpu_to_logical_apicid (apic->cpu_to_logical_apicid)
#define cpu_present_to_apicid (apic->cpu_present_to_apicid)
diff --git a/arch/x86/include/asm/numaq/apic.h b/arch/x86/include/asm/numaq/apic.h
index 2feb7e7..22bdf3d 100644
--- a/arch/x86/include/asm/numaq/apic.h
+++ b/arch/x86/include/asm/numaq/apic.h
@@ -43,7 +43,7 @@ static inline void numaq_setup_apic_routing(void)
* Skip adding the timer int on secondary nodes, which causes
* a small but painful rift in the time-space continuum.
*/
-static inline int multi_timer_check(int apic, int irq)
+static inline int numaq_multi_timer_check(int apic, int irq)
{
return apic != 0 && irq == 0;
}
diff --git a/arch/x86/include/asm/summit/apic.h b/arch/x86/include/asm/summit/apic.h
index 7ec2696..acb7bd1 100644
--- a/arch/x86/include/asm/summit/apic.h
+++ b/arch/x86/include/asm/summit/apic.h
@@ -64,11 +64,6 @@ static inline void summit_init_apic_ldr(void)
apic_write(APIC_LDR, val);
}
-static inline int multi_timer_check(int apic, int irq)
-{
- return 0;
-}
-
static inline int summit_apic_id_registered(void)
{
return 1;
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index db79ad9..282ea11 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -1618,10 +1618,15 @@ static void __init setup_IO_APIC_irqs(void)
}
irq = pin_2_irq(idx, apic_id, pin);
-#ifdef CONFIG_X86_32
- if (multi_timer_check(apic_id, irq))
+
+ /*
+ * Skip the timer IRQ if there's a quirk handler
+ * installed and if it returns 1:
+ */
+ if (apic->multi_timer_check &&
+ apic->multi_timer_check(apic_id, irq))
continue;
-#endif
+
desc = irq_to_desc_alloc_cpu(irq, cpu);
if (!desc) {
printk(KERN_INFO "can not get irq_desc for %d\n", irq);
diff --git a/arch/x86/mach-generic/bigsmp.c b/arch/x86/mach-generic/bigsmp.c
index ad3837a..d074956 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -79,7 +79,7 @@ struct genapic apic_bigsmp = {
.ioapic_phys_id_map = bigsmp_ioapic_phys_id_map,
.setup_apic_routing = bigsmp_setup_apic_routing,
- .multi_timer_check = multi_timer_check,
+ .multi_timer_check = NULL,
.apicid_to_node = apicid_to_node,
.cpu_to_logical_apicid = cpu_to_logical_apicid,
.cpu_present_to_apicid = cpu_present_to_apicid,
diff --git a/arch/x86/mach-generic/default.c b/arch/x86/mach-generic/default.c
index 67f287f..6a21aa7 100644
--- a/arch/x86/mach-generic/default.c
+++ b/arch/x86/mach-generic/default.c
@@ -60,7 +60,7 @@ struct genapic apic_default = {
.ioapic_phys_id_map = default_ioapic_phys_id_map,
.setup_apic_routing = default_setup_apic_routing,
- .multi_timer_check = multi_timer_check,
+ .multi_timer_check = NULL,
.apicid_to_node = apicid_to_node,
.cpu_to_logical_apicid = cpu_to_logical_apicid,
.cpu_present_to_apicid = cpu_present_to_apicid,
diff --git a/arch/x86/mach-generic/es7000.c b/arch/x86/mach-generic/es7000.c
index f611729..0be59a5 100644
--- a/arch/x86/mach-generic/es7000.c
+++ b/arch/x86/mach-generic/es7000.c
@@ -121,7 +121,7 @@ struct genapic apic_es7000 = {
.ioapic_phys_id_map = es7000_ioapic_phys_id_map,
.setup_apic_routing = es7000_setup_apic_routing,
- .multi_timer_check = multi_timer_check,
+ .multi_timer_check = NULL,
.apicid_to_node = apicid_to_node,
.cpu_to_logical_apicid = cpu_to_logical_apicid,
.cpu_present_to_apicid = cpu_present_to_apicid,
diff --git a/arch/x86/mach-generic/numaq.c b/arch/x86/mach-generic/numaq.c
index 8c137f4..da4ed65 100644
--- a/arch/x86/mach-generic/numaq.c
+++ b/arch/x86/mach-generic/numaq.c
@@ -66,7 +66,7 @@ struct genapic apic_numaq = {
.ioapic_phys_id_map = numaq_ioapic_phys_id_map,
.setup_apic_routing = numaq_setup_apic_routing,
- .multi_timer_check = multi_timer_check,
+ .multi_timer_check = numaq_multi_timer_check,
.apicid_to_node = apicid_to_node,
.cpu_to_logical_apicid = cpu_to_logical_apicid,
.cpu_present_to_apicid = cpu_present_to_apicid,
diff --git a/arch/x86/mach-generic/summit.c b/arch/x86/mach-generic/summit.c
index 0698566..b618a18 100644
--- a/arch/x86/mach-generic/summit.c
+++ b/arch/x86/mach-generic/summit.c
@@ -59,7 +59,7 @@ struct genapic apic_summit = {
.ioapic_phys_id_map = summit_ioapic_phys_id_map,
.setup_apic_routing = summit_setup_apic_routing,
- .multi_timer_check = multi_timer_check,
+ .multi_timer_check = NULL,
.apicid_to_node = apicid_to_node,
.cpu_to_logical_apicid = cpu_to_logical_apicid,
.cpu_present_to_apicid = cpu_present_to_apicid,
--
1.6.0.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists