Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1f253e60aefe4d3a3e708b3c2a082f3ec1be6f4
Commit: d1f253e60aefe4d3a3e708b3c2a082f3ec1be6f4
Parent: eff3414b7277c4792debfa227f5408238d925f16
Author: David S. Miller <[EMAIL PROTECTED]>
AuthorDate: Sat Jun 2 20:46:36 2007 -0700
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Mon Jun 4 21:49:51 2007 -0700
[SPARC64]: Export basic cpu properties via sysfs.
Cache sizes, udelay_val, and clock_tick.
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
arch/sparc64/kernel/sysfs.c | 86 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 86 insertions(+), 0 deletions(-)
diff --git a/arch/sparc64/kernel/sysfs.c b/arch/sparc64/kernel/sysfs.c
index 0808c21..a684a79 100644
--- a/arch/sparc64/kernel/sysfs.c
+++ b/arch/sparc64/kernel/sysfs.c
@@ -10,14 +10,100 @@
static DEFINE_PER_CPU(struct cpu, cpu_devices);
+#define SHOW_ULONG_NAME(NAME, MEMBER) \
+static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
+{ \
+ struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
+ cpuinfo_sparc *c = &cpu_data(cpu->sysdev.id); \
+ return sprintf(buf, "%lu\n", c->MEMBER); \
+}
+
+#define SHOW_UINT_NAME(NAME, MEMBER) \
+static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
+{ \
+ struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
+ cpuinfo_sparc *c = &cpu_data(cpu->sysdev.id); \
+ return sprintf(buf, "%u\n", c->MEMBER); \
+}
+
+SHOW_ULONG_NAME(clock_tick, clock_tick);
+SHOW_ULONG_NAME(udelay_val, udelay_val);
+SHOW_UINT_NAME(l1_dcache_size, dcache_size);
+SHOW_UINT_NAME(l1_dcache_line_size, dcache_line_size);
+SHOW_UINT_NAME(l1_icache_size, icache_size);
+SHOW_UINT_NAME(l1_icache_line_size, icache_line_size);
+SHOW_UINT_NAME(l2_cache_size, ecache_size);
+SHOW_UINT_NAME(l2_cache_line_size, ecache_line_size);
+
+static struct sysdev_attribute cpu_core_attrs[] = {
+ _SYSDEV_ATTR(clock_tick, 0444, show_clock_tick, NULL),
+ _SYSDEV_ATTR(udelay_val, 0444, show_udelay_val, NULL),
+ _SYSDEV_ATTR(l1_dcache_size, 0444, show_l1_dcache_size, NULL),
+ _SYSDEV_ATTR(l1_dcache_line_size, 0444, show_l1_dcache_line_size, NULL),
+ _SYSDEV_ATTR(l1_icache_size, 0444, show_l1_icache_size, NULL),
+ _SYSDEV_ATTR(l1_icache_line_size, 0444, show_l1_icache_line_size, NULL),
+ _SYSDEV_ATTR(l2_cache_size, 0444, show_l2_cache_size, NULL),
+ _SYSDEV_ATTR(l2_cache_line_size, 0444, show_l2_cache_line_size, NULL),
+};
+
+static void register_cpu_online(unsigned int cpu)
+{
+ struct cpu *c = &per_cpu(cpu_devices, cpu);
+ struct sys_device *s = &c->sysdev;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
+ sysdev_create_file(s, &cpu_core_attrs[i]);
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+static void unregister_cpu_online(unsigned int cpu)
+{
+ struct cpu *c = &per_cpu(cpu_devices, cpu);
+ struct sys_device *s = &c->sysdev;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
+ sysdev_remove_file(s, &cpu_core_attrs[i]);
+}
+#endif
+
+static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
+ unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (unsigned int)(long)hcpu;
+
+ switch (action) {
+ case CPU_ONLINE:
+ case CPU_ONLINE_FROZEN:
+ register_cpu_online(cpu);
+ break;
+#ifdef CONFIG_HOTPLUG_CPU
+ case CPU_DEAD:
+ case CPU_DEAD_FROZEN:
+ unregister_cpu_online(cpu);
+ break;
+#endif
+ }
+ return NOTIFY_OK;
+}
+
+static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
+ .notifier_call = sysfs_cpu_notify,
+};
+
static int __init topology_init(void)
{
int cpu;
+ register_cpu_notifier(&sysfs_cpu_nb);
+
for_each_possible_cpu(cpu) {
struct cpu *c = &per_cpu(cpu_devices, cpu);
register_cpu(c, cpu);
+ if (cpu_online(cpu))
+ register_cpu_online(cpu);
}
return 0;
-
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