x86: use 28 bits irq NR for pci msi/msix and ht

[safe/jmp/linux-2.6] / fs / proc / proc_misc.c

diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index a2173a2..d68c359 100644 (file)
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -30,6 +30,7 @@
 #include <linux/mm.h>
 #include <linux/mmzone.h>
 #include <linux/pagemap.h>
+#include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/swap.h>
 #include <linux/slab.h>
@@ -501,17 +502,16 @@ static const struct file_operations proc_vmalloc_operations = {
 
 static int show_stat(struct seq_file *p, void *v)
 {
-       int i;
+       int i, j;
        unsigned long jif;
        cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
        cputime64_t guest;
        u64 sum = 0;
        struct timespec boottime;
-       unsigned int *per_irq_sum;
-
-       per_irq_sum = kzalloc(sizeof(unsigned int)*nr_irqs, GFP_KERNEL);
-       if (!per_irq_sum)
-               return -ENOMEM;
+       unsigned int per_irq_sum;
+#ifdef CONFIG_GENERIC_HARDIRQS
+       struct irq_desc *desc;
+#endif
 
        user = nice = system = idle = iowait =
                irq = softirq = steal = cputime64_zero;
@@ -520,8 +520,6 @@ static int show_stat(struct seq_file *p, void *v)
        jif = boottime.tv_sec;
 
        for_each_possible_cpu(i) {
-               int j;
-
                user = cputime64_add(user, kstat_cpu(i).cpustat.user);
                nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
                system = cputime64_add(system, kstat_cpu(i).cpustat.system);
@@ -531,10 +529,12 @@ static int show_stat(struct seq_file *p, void *v)
                softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
                steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
                guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
-               for (j = 0; j < nr_irqs; j++) {
-                       unsigned int temp = kstat_cpu(i).irqs[j];
+               for_each_irq_desc(j, desc)
+               {
+                       unsigned int temp;
+
+                       temp = kstat_irqs_cpu(j, i);
                        sum += temp;
-                       per_irq_sum[j] += temp;
                }
                sum += arch_irq_stat_cpu(i);
        }
@@ -577,8 +577,23 @@ static int show_stat(struct seq_file *p, void *v)
        }
        seq_printf(p, "intr %llu", (unsigned long long)sum);
 
-       for (i = 0; i < nr_irqs; i++)
-               seq_printf(p, " %u", per_irq_sum[i]);
+       /* sum again ? it could be updated? */
+       for_each_irq_desc(j, desc)
+       {
+               per_irq_sum = 0;
+               for_each_possible_cpu(i) {
+                       unsigned int temp;
+
+                       temp = kstat_irqs_cpu(j, i);
+                       per_irq_sum += temp;
+               }
+
+#ifdef CONFIG_HAVE_SPARSE_IRQ
+               seq_printf(p, " %#x:%u", j, per_irq_sum);
+#else
+               seq_printf(p, " %u", per_irq_sum);
+#endif
+       }
 
        seq_printf(p,
                "\nctxt %llu\n"
@@ -592,7 +607,6 @@ static int show_stat(struct seq_file *p, void *v)
                nr_running(),
                nr_iowait());
 
-       kfree(per_irq_sum);
        return 0;
 }
 
@@ -631,15 +645,36 @@ static const struct file_operations proc_stat_operations = {
  */
 static void *int_seq_start(struct seq_file *f, loff_t *pos)
 {
+#ifdef CONFIG_HAVE_SPARSE_IRQ
+       struct irq_desc *desc;
+       int irq;
+       int count = *pos;
+
+       for_each_irq_desc(irq, desc) {
+               if (count-- == 0)
+                       return desc;
+       }
+
+       return NULL;
+#else
        return (*pos <= nr_irqs) ? pos : NULL;
+#endif
 }
 
+
 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
 {
+#ifdef CONFIG_HAVE_SPARSE_IRQ
+       struct irq_desc *desc;
+
+       desc = ((struct irq_desc *)v)->next;
        (*pos)++;
-       if (*pos > nr_irqs)
-               return NULL;
-       return pos;
+
+       return desc;
+#else
+       (*pos)++;
+       return (*pos <= nr_irqs) ? pos : NULL;
+#endif
 }
 
 static void int_seq_stop(struct seq_file *f, void *v)
@@ -647,7 +682,6 @@ static void int_seq_stop(struct seq_file *f, void *v)
        /* Nothing to do */
 }
 
-
 static const struct seq_operations int_seq_ops = {
        .start = int_seq_start,
        .next  = int_seq_next,