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Date: Mon, 16 Mar 2009 14:43:56 +1030
From: Rusty Russell <rusty@...tcorp.com.au>
To: Richard Henderson <rth@...ddle.net>
CC: travis@....com
Subject: [PULL] cpumask updates for alpha
The following changes since commit 5bee17f18b595937e6beafeee5197868a3f74a06:
Kyle McMartin (1):
parisc: sba_iommu: fix build bug when CONFIG_PARISC_AGP=y
are available in the git repository at:
ssh://master.kernel.org/home/ftp/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask-for-alpha.git master
Rusty Russell (3):
cpumask: remove the now-obsoleted pcibus_to_cpumask(): alpha
cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: alpha
cpumask: arch_send_call_function_ipi_mask: alpha
arch/alpha/include/asm/smp.h | 3 ++-
arch/alpha/include/asm/topology.h | 1 -
arch/alpha/kernel/irq.c | 2 +-
arch/alpha/kernel/smp.c | 31 +++++++++++++++----------------
4 files changed, 18 insertions(+), 19 deletions(-)
commit 16b8b2042882f1270754cf6ba30d5bc1441c541d
Author: Rusty Russell <rusty@...tcorp.com.au>
Date: Mon Mar 16 14:10:43 2009 +1030
cpumask: arch_send_call_function_ipi_mask: alpha
We're weaning the core code off handing cpumask's around on-stack.
This introduces arch_send_call_function_ipi_mask().
We also take the chance to wean the send_ipi_message off the
obsolescent for_each_cpu_mask(): making it take a pointer seemed the
most natural way to do this.
Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
diff --git a/arch/alpha/include/asm/smp.h b/arch/alpha/include/asm/smp.h
index 547e909..8818a1b 100644
--- a/arch/alpha/include/asm/smp.h
+++ b/arch/alpha/include/asm/smp.h
@@ -47,7 +47,8 @@ extern struct cpuinfo_alpha cpu_data[NR_CPUS];
extern int smp_num_cpus;
extern void arch_send_call_function_single_ipi(int cpu);
-extern void arch_send_call_function_ipi(cpumask_t mask);
+extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
+#define arch_send_call_function_ipi_mask arch_send_call_function_ipi_mask
#else /* CONFIG_SMP */
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 286597e..aa77864 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -547,16 +547,16 @@ setup_profiling_timer(unsigned int multiplier)
.
static void
-send_ipi_message(cpumask_t to_whom, enum ipi_message_type operation)
+send_ipi_message(const struct cpumask *to_whom, enum ipi_message_type operation)
{
int i;
mb();
- for_each_cpu_mask(i, to_whom)
+ for_each_cpu(i, to_whom)
set_bit(operation, &ipi_data[i].bits);
mb();
- for_each_cpu_mask(i, to_whom)
+ for_each_cpu(i, to_whom)
wripir(i);
}
@@ -623,7 +623,7 @@ smp_send_reschedule(int cpu)
printk(KERN_WARNING
"smp_send_reschedule: Sending IPI to self.\n");
#endif
- send_ipi_message(cpumask_of_cpu(cpu), IPI_RESCHEDULE);
+ send_ipi_message(cpumask_of(cpu), IPI_RESCHEDULE);
}
void
@@ -635,17 +635,17 @@ smp_send_stop(void)
if (hard_smp_processor_id() != boot_cpu_id)
printk(KERN_WARNING "smp_send_stop: Not on boot cpu.\n");
#endif
- send_ipi_message(to_whom, IPI_CPU_STOP);
+ send_ipi_message(&to_whom, IPI_CPU_STOP);
}
-void arch_send_call_function_ipi(cpumask_t mask)
+void arch_send_call_function_ipi_mask(const struct cpumask *mask)
{
send_ipi_message(mask, IPI_CALL_FUNC);
}
void arch_send_call_function_single_ipi(int cpu)
{
- send_ipi_message(cpumask_of_cpu(cpu), IPI_CALL_FUNC_SINGLE);
+ send_ipi_message(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE);
}
static void
commit 8dfa51d38b49cb5e724d0a30aac113744a0eb971
Author: Rusty Russell <rusty@...tcorp.com.au>
Date: Mon Mar 16 14:10:42 2009 +1030
cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: alpha
Impact: cleanup, futureproof
In fact, all cpumask ops will only be valid (in general) for bit
numbers < nr_cpu_ids. So use that instead of NR_CPUS in various
places.
This is always safe: no cpu number can be >= nr_cpu_ids, and
nr_cpu_ids is initialized to NR_CPUS at boot.
Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
Signed-off-by: Mike Travis <travis@....com>
Acked-by: Ingo Molnar <mingo@...e.hu>
diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index 703731a..b6e2b86 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -52,7 +52,7 @@ int irq_select_affinity(unsigned int irq)
while (!cpu_possible(cpu) ||
!cpumask_test_cpu(cpu, irq_default_affinity))
- cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
+ cpu = (cpu < (nr_cpu_ids-1) ? cpu + 1 : 0);
last_cpu = cpu;
irq_desc[irq].affinity = cpumask_of_cpu(cpu);
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index b1fe567..286597e 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -500,9 +500,8 @@ smp_cpus_done(unsigned int max_cpus)
int cpu;
unsigned long bogosum = 0;
- for(cpu = 0; cpu < NR_CPUS; cpu++)
- if (cpu_online(cpu))
- bogosum += cpu_data[cpu].loops_per_jiffy;
+ for_each_online_cpu(cpu)
+ bogosum += cpu_data[cpu].loops_per_jiffy;
printk(KERN_INFO "SMP: Total of %d processors activated "
"(%lu.%02lu BogoMIPS).\n",
@@ -701,8 +700,8 @@ flush_tlb_mm(struct mm_struct *mm)
flush_tlb_current(mm);
if (atomic_read(&mm->mm_users) <= 1) {
int cpu, this_cpu = smp_processor_id();
- for (cpu = 0; cpu < NR_CPUS; cpu++) {
- if (!cpu_online(cpu) || cpu == this_cpu)
+ for_each_online_cpu(cpu) {
+ if (cpu == this_cpu)
continue;
if (mm->context[cpu])
mm->context[cpu] = 0;
@@ -750,8 +749,8 @@ flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
flush_tlb_current_page(mm, vma, addr);
if (atomic_read(&mm->mm_users) <= 1) {
int cpu, this_cpu = smp_processor_id();
- for (cpu = 0; cpu < NR_CPUS; cpu++) {
- if (!cpu_online(cpu) || cpu == this_cpu)
+ for_each_online_cpu(cpu) {
+ if (cpu == this_cpu)
continue;
if (mm->context[cpu])
mm->context[cpu] = 0;
@@ -806,8 +805,8 @@ flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
__load_new_mm_context(mm);
if (atomic_read(&mm->mm_users) <= 1) {
int cpu, this_cpu = smp_processor_id();
- for (cpu = 0; cpu < NR_CPUS; cpu++) {
- if (!cpu_online(cpu) || cpu == this_cpu)
+ for_each_online_cpu(cpu) {
+ if (cpu == this_cpu)
continue;
if (mm->context[cpu])
mm->context[cpu] = 0;
commit 61ed3414a45c445426216a7c9ebbcf027d806499
Author: Rusty Russell <rusty@...tcorp.com.au>
Date: Mon Mar 16 14:10:42 2009 +1030
cpumask: remove the now-obsoleted pcibus_to_cpumask(): alpha
Impact: reduce stack usage for large NR_CPUS
cpumask_of_pcibus() is the new version.
Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
diff --git a/arch/alpha/include/asm/topology.h b/arch/alpha/include/asm/topology.h
index b4f284c..f5bd6cd 100644
--- a/arch/alpha/include/asm/topology.h
+++ b/arch/alpha/include/asm/topology.h
@@ -55,7 +55,6 @@ static const struct cpumask *cpumask_of_node(int node)
return &node_to_cpumask_map[node];
}
-#define pcibus_to_cpumask(bus) (cpu_online_map)
#define cpumask_of_pcibus(bus) (cpu_online_mask)
#endif /* !CONFIG_NUMA */
--
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