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Date: Fri, 30 Jan 2009 11:17:15 +0100
From: Andi Kleen <andi@...stfloor.org>
To: mingo@...e.hu
Cc: linux-kernel@...r.kernel.org, lnxninja@...ux.vnet.ibm.com,
Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH] Remove wakeup_cpu genapic vector
From: Andi Kleen <ak@...ux.intel.com>
... and instead call wakeup_secondary_cpu_via_init directly in smpboot.c
Was only used by es7000 and numaq
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
arch/x86/include/asm/genapic.h | 3 --
arch/x86/include/asm/setup.h | 1 -
arch/x86/kernel/bigsmp_32.c | 1 -
arch/x86/kernel/es7000_32.c | 4 ---
arch/x86/kernel/genapic_flat_64.c | 2 -
arch/x86/kernel/genx2apic_cluster.c | 1 -
arch/x86/kernel/genx2apic_phys.c | 1 -
arch/x86/kernel/genx2apic_uv_x.c | 1 -
arch/x86/kernel/numaq_32.c | 42 -----------------------------------
arch/x86/kernel/probe_32.c | 1 -
arch/x86/kernel/setup.c | 5 ----
arch/x86/kernel/smpboot.c | 6 ++--
arch/x86/kernel/summit_32.c | 1 -
13 files changed, 3 insertions(+), 66 deletions(-)
diff --git a/arch/x86/include/asm/genapic.h b/arch/x86/include/asm/genapic.h
index 988e1bc..2047b14 100644
--- a/arch/x86/include/asm/genapic.h
+++ b/arch/x86/include/asm/genapic.h
@@ -71,9 +71,6 @@ struct genapic {
void (*send_IPI_all)(int vector);
void (*send_IPI_self)(int vector);
- /* wakeup_secondary_cpu */
- int (*wakeup_cpu)(int apicid, unsigned long start_eip);
-
int trampoline_phys_low;
int trampoline_phys_high;
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index 8c8289c..e0b651e 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -20,7 +20,6 @@ static inline void visws_early_detect(void) { }
static inline int is_visws_box(void) { return 0; }
#endif
-extern int wakeup_secondary_cpu_via_init(int apicid, unsigned long start_eip);
/*
* Any setup quirks to be performed?
*/
diff --git a/arch/x86/kernel/bigsmp_32.c b/arch/x86/kernel/bigsmp_32.c
index e3d31ae..e35e1ff 100644
--- a/arch/x86/kernel/bigsmp_32.c
+++ b/arch/x86/kernel/bigsmp_32.c
@@ -250,7 +250,6 @@ struct genapic apic_bigsmp = {
.send_IPI_all = bigsmp_send_IPI_all,
.send_IPI_self = NULL,
- .wakeup_cpu = NULL,
.trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
diff --git a/arch/x86/kernel/es7000_32.c b/arch/x86/kernel/es7000_32.c
index b50f0f5..c94fc21 100644
--- a/arch/x86/kernel/es7000_32.c
+++ b/arch/x86/kernel/es7000_32.c
@@ -183,14 +183,11 @@ static int wakeup_secondary_cpu_via_mip(int cpu, unsigned long eip)
static int __init es7000_update_genapic(void)
{
- apic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
-
/* MPENTIUMIII */
if (boot_cpu_data.x86 == 6 &&
(boot_cpu_data.x86_model >= 7 || boot_cpu_data.x86_model <= 11)) {
es7000_update_genapic_to_cluster();
apic->wait_for_init_deassert = NULL;
- apic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
}
return 0;
@@ -786,7 +783,6 @@ struct genapic apic_es7000 = {
.send_IPI_all = es7000_send_IPI_all,
.send_IPI_self = NULL,
- .wakeup_cpu = NULL,
.trampoline_phys_low = 0x467,
.trampoline_phys_high = 0x469,
diff --git a/arch/x86/kernel/genapic_flat_64.c b/arch/x86/kernel/genapic_flat_64.c
index d85b7fc..e87c3bc 100644
--- a/arch/x86/kernel/genapic_flat_64.c
+++ b/arch/x86/kernel/genapic_flat_64.c
@@ -220,7 +220,6 @@ struct genapic apic_flat = {
.send_IPI_all = flat_send_IPI_all,
.send_IPI_self = apic_send_IPI_self,
- .wakeup_cpu = NULL,
.trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
.wait_for_init_deassert = NULL,
@@ -361,7 +360,6 @@ struct genapic apic_physflat = {
.send_IPI_all = physflat_send_IPI_all,
.send_IPI_self = apic_send_IPI_self,
- .wakeup_cpu = NULL,
.trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
.wait_for_init_deassert = NULL,
diff --git a/arch/x86/kernel/genx2apic_cluster.c b/arch/x86/kernel/genx2apic_cluster.c
index 9fc9582..2e7497b 100644
--- a/arch/x86/kernel/genx2apic_cluster.c
+++ b/arch/x86/kernel/genx2apic_cluster.c
@@ -225,7 +225,6 @@ struct genapic apic_x2apic_cluster = {
.send_IPI_all = x2apic_send_IPI_all,
.send_IPI_self = x2apic_send_IPI_self,
- .wakeup_cpu = NULL,
.trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
.wait_for_init_deassert = NULL,
diff --git a/arch/x86/kernel/genx2apic_phys.c b/arch/x86/kernel/genx2apic_phys.c
index 04fb617..f47c2ff 100644
--- a/arch/x86/kernel/genx2apic_phys.c
+++ b/arch/x86/kernel/genx2apic_phys.c
@@ -211,7 +211,6 @@ struct genapic apic_x2apic_phys = {
.send_IPI_all = x2apic_send_IPI_all,
.send_IPI_self = x2apic_send_IPI_self,
- .wakeup_cpu = NULL,
.trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
.wait_for_init_deassert = NULL,
diff --git a/arch/x86/kernel/genx2apic_uv_x.c b/arch/x86/kernel/genx2apic_uv_x.c
index ac0e23b..ba1e3b1 100644
--- a/arch/x86/kernel/genx2apic_uv_x.c
+++ b/arch/x86/kernel/genx2apic_uv_x.c
@@ -284,7 +284,6 @@ struct genapic apic_x2apic_uv_x = {
.send_IPI_all = uv_send_IPI_all,
.send_IPI_self = uv_send_IPI_self,
- .wakeup_cpu = NULL,
.trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
.wait_for_init_deassert = NULL,
diff --git a/arch/x86/kernel/numaq_32.c b/arch/x86/kernel/numaq_32.c
index 9c9b3c7..d412d0e 100644
--- a/arch/x86/kernel/numaq_32.c
+++ b/arch/x86/kernel/numaq_32.c
@@ -234,49 +234,8 @@ static int __init numaq_setup_ioapic_ids(void)
return 1;
}
-/*
- * Poke the other CPU in the eye via NMI to wake it up. Remember that the normal
- * INIT, INIT, STARTUP sequence will reset the chip hard for us, and this
- * won't ... remember to clear down the APIC, etc later.
- */
-static int __devinit
-wakeup_secondary_cpu_via_nmi(int logical_apicid, unsigned long start_eip)
-{
- unsigned long send_status, accept_status = 0;
- int maxlvt;
-
- /* Target chip */
- /* Boot on the stack */
- /* Kick the second */
- apic_icr_write(APIC_DM_NMI | apic->dest_logical, logical_apicid);
-
- pr_debug("Waiting for send to finish...\n");
- send_status = safe_apic_wait_icr_idle();
-
- /*
- * Give the other CPU some time to accept the IPI.
- */
- udelay(200);
- if (APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
- maxlvt = lapic_get_maxlvt();
- if (maxlvt > 3) /* Due to the Pentium erratum 3AP. */
- apic_write(APIC_ESR, 0);
- accept_status = (apic_read(APIC_ESR) & 0xEF);
- }
- pr_debug("NMI sent.\n");
-
- if (send_status)
- printk(KERN_ERR "APIC never delivered???\n");
- if (accept_status)
- printk(KERN_ERR "APIC delivery error (%lx).\n", accept_status);
-
- return (send_status | accept_status);
-}
-
static int __init numaq_update_genapic(void)
{
- apic->wakeup_cpu = wakeup_secondary_cpu_via_nmi;
-
return 0;
}
@@ -554,7 +513,6 @@ struct genapic apic_numaq = {
.send_IPI_all = numaq_send_IPI_all,
.send_IPI_self = NULL,
- .wakeup_cpu = NULL,
.trampoline_phys_low = NUMAQ_TRAMPOLINE_PHYS_LOW,
.trampoline_phys_high = NUMAQ_TRAMPOLINE_PHYS_HIGH,
diff --git a/arch/x86/kernel/probe_32.c b/arch/x86/kernel/probe_32.c
index 905295e..b01936f 100644
--- a/arch/x86/kernel/probe_32.c
+++ b/arch/x86/kernel/probe_32.c
@@ -116,7 +116,6 @@ struct genapic apic_default = {
.send_IPI_all = default_send_IPI_all,
.send_IPI_self = NULL,
- .wakeup_cpu = NULL,
.trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index f64e1a4..d6627cf 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -602,11 +602,6 @@ early_param("elfcorehdr", setup_elfcorehdr);
static int __init default_update_genapic(void)
{
-#ifdef CONFIG_SMP
- if (!apic->wakeup_cpu)
- apic->wakeup_cpu = wakeup_secondary_cpu_via_init;
-#endif
-
return 0;
}
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index f479bba..2e32144 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -115,7 +115,6 @@ EXPORT_PER_CPU_SYMBOL(cpu_info);
static atomic_t init_deasserted;
-
/* Set if we find a B stepping CPU */
static int __cpuinitdata smp_b_stepping;
@@ -709,7 +708,8 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu)
/*
* NOTE - on most systems this is a PHYSICAL apic ID, but on multiquad
* (ie clustered apic addressing mode), this is a LOGICAL apic ID.
- * Returns zero if CPU booted OK, else error code from ->wakeup_cpu.
+ * Returns zero if CPU booted OK, else error code from
+ * wakeup_secondary_via_init.
*/
{
unsigned long boot_error = 0;
@@ -796,7 +796,7 @@ do_rest:
/*
* Starting actual IPI sequence...
*/
- boot_error = apic->wakeup_cpu(apicid, start_ip);
+ boot_error = wakeup_secondary_cpu_via_init(apicid, start_ip);
if (!boot_error) {
/*
diff --git a/arch/x86/kernel/summit_32.c b/arch/x86/kernel/summit_32.c
index f0dde1c..ec815fe 100644
--- a/arch/x86/kernel/summit_32.c
+++ b/arch/x86/kernel/summit_32.c
@@ -586,7 +586,6 @@ struct genapic apic_summit = {
.send_IPI_all = summit_send_IPI_all,
.send_IPI_self = NULL,
- .wakeup_cpu = NULL,
.trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
--
1.5.6.5
--
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