Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Avoid "u64 foo : 32;" for gcc3 vs. gcc4 compatibility [IA64] Export cpu cache info by sysfs
This commit is contained in:
commit
a8b59e79ed
|
@ -240,7 +240,7 @@ cache_info(char *page)
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}
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p += sprintf(p,
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"%s Cache level %lu:\n"
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"\tSize : %lu bytes\n"
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"\tSize : %u bytes\n"
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"\tAttributes : ",
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cache_types[j+cci.pcci_unified], i+1,
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cci.pcci_cache_size);
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@ -648,9 +648,9 @@ frequency_info(char *page)
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if (ia64_pal_freq_ratios(&proc, &bus, &itc) != 0) return 0;
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p += sprintf(p,
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"Processor/Clock ratio : %ld/%ld\n"
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"Bus/Clock ratio : %ld/%ld\n"
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"ITC/Clock ratio : %ld/%ld\n",
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"Processor/Clock ratio : %d/%d\n"
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"Bus/Clock ratio : %d/%d\n"
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"ITC/Clock ratio : %d/%d\n",
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proc.num, proc.den, bus.num, bus.den, itc.num, itc.den);
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return p - page;
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|
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@ -188,7 +188,7 @@ ia64_init_itm (void)
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itc_freq = (platform_base_freq*itc_ratio.num)/itc_ratio.den;
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local_cpu_data->itm_delta = (itc_freq + HZ/2) / HZ;
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printk(KERN_DEBUG "CPU %d: base freq=%lu.%03luMHz, ITC ratio=%lu/%lu, "
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printk(KERN_DEBUG "CPU %d: base freq=%lu.%03luMHz, ITC ratio=%u/%u, "
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"ITC freq=%lu.%03luMHz", smp_processor_id(),
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platform_base_freq / 1000000, (platform_base_freq / 1000) % 1000,
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itc_ratio.num, itc_ratio.den, itc_freq / 1000000, (itc_freq / 1000) % 1000);
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|
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@ -9,6 +9,8 @@
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* 2002/08/07 Erich Focht <efocht@ess.nec.de>
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* Populate cpu entries in sysfs for non-numa systems as well
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* Intel Corporation - Ashok Raj
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* 02/27/2006 Zhang, Yanmin
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* Populate cpu cache entries in sysfs for cpu cache info
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*/
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#include <linux/config.h>
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@ -19,6 +21,7 @@
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#include <linux/init.h>
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#include <linux/bootmem.h>
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#include <linux/nodemask.h>
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#include <linux/notifier.h>
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#include <asm/mmzone.h>
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#include <asm/numa.h>
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#include <asm/cpu.h>
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@ -101,3 +104,367 @@ out:
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}
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subsys_initcall(topology_init);
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/*
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* Export cpu cache information through sysfs
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*/
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/*
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* A bunch of string array to get pretty printing
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*/
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static const char *cache_types[] = {
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"", /* not used */
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"Instruction",
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"Data",
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"Unified" /* unified */
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};
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static const char *cache_mattrib[]={
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"WriteThrough",
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"WriteBack",
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"", /* reserved */
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"" /* reserved */
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};
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struct cache_info {
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pal_cache_config_info_t cci;
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cpumask_t shared_cpu_map;
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int level;
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int type;
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struct kobject kobj;
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};
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struct cpu_cache_info {
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struct cache_info *cache_leaves;
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int num_cache_leaves;
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struct kobject kobj;
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};
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static struct cpu_cache_info all_cpu_cache_info[NR_CPUS];
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#define LEAF_KOBJECT_PTR(x,y) (&all_cpu_cache_info[x].cache_leaves[y])
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#ifdef CONFIG_SMP
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static void cache_shared_cpu_map_setup( unsigned int cpu,
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struct cache_info * this_leaf)
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{
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pal_cache_shared_info_t csi;
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int num_shared, i = 0;
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unsigned int j;
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if (cpu_data(cpu)->threads_per_core <= 1 &&
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cpu_data(cpu)->cores_per_socket <= 1) {
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cpu_set(cpu, this_leaf->shared_cpu_map);
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return;
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}
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if (ia64_pal_cache_shared_info(this_leaf->level,
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this_leaf->type,
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0,
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&csi) != PAL_STATUS_SUCCESS)
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return;
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num_shared = (int) csi.num_shared;
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do {
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for_each_cpu(j)
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if (cpu_data(cpu)->socket_id == cpu_data(j)->socket_id
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&& cpu_data(j)->core_id == csi.log1_cid
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&& cpu_data(j)->thread_id == csi.log1_tid)
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cpu_set(j, this_leaf->shared_cpu_map);
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i++;
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} while (i < num_shared &&
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ia64_pal_cache_shared_info(this_leaf->level,
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this_leaf->type,
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i,
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&csi) == PAL_STATUS_SUCCESS);
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}
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#else
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static void cache_shared_cpu_map_setup(unsigned int cpu,
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struct cache_info * this_leaf)
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{
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cpu_set(cpu, this_leaf->shared_cpu_map);
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return;
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}
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#endif
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static ssize_t show_coherency_line_size(struct cache_info *this_leaf,
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char *buf)
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{
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return sprintf(buf, "%u\n", 1 << this_leaf->cci.pcci_line_size);
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}
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static ssize_t show_ways_of_associativity(struct cache_info *this_leaf,
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char *buf)
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{
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return sprintf(buf, "%u\n", this_leaf->cci.pcci_assoc);
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}
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static ssize_t show_attributes(struct cache_info *this_leaf, char *buf)
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{
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return sprintf(buf,
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"%s\n",
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cache_mattrib[this_leaf->cci.pcci_cache_attr]);
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}
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static ssize_t show_size(struct cache_info *this_leaf, char *buf)
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{
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return sprintf(buf, "%uK\n", this_leaf->cci.pcci_cache_size / 1024);
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}
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static ssize_t show_number_of_sets(struct cache_info *this_leaf, char *buf)
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{
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unsigned number_of_sets = this_leaf->cci.pcci_cache_size;
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number_of_sets /= this_leaf->cci.pcci_assoc;
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number_of_sets /= 1 << this_leaf->cci.pcci_line_size;
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return sprintf(buf, "%u\n", number_of_sets);
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}
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static ssize_t show_shared_cpu_map(struct cache_info *this_leaf, char *buf)
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{
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ssize_t len;
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cpumask_t shared_cpu_map;
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cpus_and(shared_cpu_map, this_leaf->shared_cpu_map, cpu_online_map);
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len = cpumask_scnprintf(buf, NR_CPUS+1, shared_cpu_map);
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len += sprintf(buf+len, "\n");
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return len;
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}
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static ssize_t show_type(struct cache_info *this_leaf, char *buf)
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{
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int type = this_leaf->type + this_leaf->cci.pcci_unified;
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return sprintf(buf, "%s\n", cache_types[type]);
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}
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static ssize_t show_level(struct cache_info *this_leaf, char *buf)
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{
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return sprintf(buf, "%u\n", this_leaf->level);
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}
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struct cache_attr {
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struct attribute attr;
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ssize_t (*show)(struct cache_info *, char *);
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ssize_t (*store)(struct cache_info *, const char *, size_t count);
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};
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#ifdef define_one_ro
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#undef define_one_ro
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#endif
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#define define_one_ro(_name) \
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static struct cache_attr _name = \
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__ATTR(_name, 0444, show_##_name, NULL)
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define_one_ro(level);
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define_one_ro(type);
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define_one_ro(coherency_line_size);
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define_one_ro(ways_of_associativity);
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define_one_ro(size);
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define_one_ro(number_of_sets);
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define_one_ro(shared_cpu_map);
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define_one_ro(attributes);
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static struct attribute * cache_default_attrs[] = {
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&type.attr,
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&level.attr,
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&coherency_line_size.attr,
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&ways_of_associativity.attr,
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&attributes.attr,
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&size.attr,
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&number_of_sets.attr,
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&shared_cpu_map.attr,
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NULL
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};
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#define to_object(k) container_of(k, struct cache_info, kobj)
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#define to_attr(a) container_of(a, struct cache_attr, attr)
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static ssize_t cache_show(struct kobject * kobj, struct attribute * attr, char * buf)
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{
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struct cache_attr *fattr = to_attr(attr);
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struct cache_info *this_leaf = to_object(kobj);
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ssize_t ret;
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ret = fattr->show ? fattr->show(this_leaf, buf) : 0;
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return ret;
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}
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static struct sysfs_ops cache_sysfs_ops = {
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.show = cache_show
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};
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static struct kobj_type cache_ktype = {
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.sysfs_ops = &cache_sysfs_ops,
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.default_attrs = cache_default_attrs,
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};
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static struct kobj_type cache_ktype_percpu_entry = {
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.sysfs_ops = &cache_sysfs_ops,
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};
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static void __cpuinit cpu_cache_sysfs_exit(unsigned int cpu)
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{
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if (all_cpu_cache_info[cpu].cache_leaves) {
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kfree(all_cpu_cache_info[cpu].cache_leaves);
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all_cpu_cache_info[cpu].cache_leaves = NULL;
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}
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all_cpu_cache_info[cpu].num_cache_leaves = 0;
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memset(&all_cpu_cache_info[cpu].kobj, 0, sizeof(struct kobject));
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|
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return;
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}
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||||
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static int __cpuinit cpu_cache_sysfs_init(unsigned int cpu)
|
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{
|
||||
u64 i, levels, unique_caches;
|
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pal_cache_config_info_t cci;
|
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int j;
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s64 status;
|
||||
struct cache_info *this_cache;
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int num_cache_leaves = 0;
|
||||
|
||||
if ((status = ia64_pal_cache_summary(&levels, &unique_caches)) != 0) {
|
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printk(KERN_ERR "ia64_pal_cache_summary=%ld\n", status);
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||||
return -1;
|
||||
}
|
||||
|
||||
this_cache=kzalloc(sizeof(struct cache_info)*unique_caches,
|
||||
GFP_KERNEL);
|
||||
if (this_cache == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
for (i=0; i < levels; i++) {
|
||||
for (j=2; j >0 ; j--) {
|
||||
if ((status=ia64_pal_cache_config_info(i,j, &cci)) !=
|
||||
PAL_STATUS_SUCCESS)
|
||||
continue;
|
||||
|
||||
this_cache[num_cache_leaves].cci = cci;
|
||||
this_cache[num_cache_leaves].level = i + 1;
|
||||
this_cache[num_cache_leaves].type = j;
|
||||
|
||||
cache_shared_cpu_map_setup(cpu,
|
||||
&this_cache[num_cache_leaves]);
|
||||
num_cache_leaves ++;
|
||||
}
|
||||
}
|
||||
|
||||
all_cpu_cache_info[cpu].cache_leaves = this_cache;
|
||||
all_cpu_cache_info[cpu].num_cache_leaves = num_cache_leaves;
|
||||
|
||||
memset(&all_cpu_cache_info[cpu].kobj, 0, sizeof(struct kobject));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Add cache interface for CPU device */
|
||||
static int __cpuinit cache_add_dev(struct sys_device * sys_dev)
|
||||
{
|
||||
unsigned int cpu = sys_dev->id;
|
||||
unsigned long i, j;
|
||||
struct cache_info *this_object;
|
||||
int retval = 0;
|
||||
cpumask_t oldmask;
|
||||
|
||||
if (all_cpu_cache_info[cpu].kobj.parent)
|
||||
return 0;
|
||||
|
||||
oldmask = current->cpus_allowed;
|
||||
retval = set_cpus_allowed(current, cpumask_of_cpu(cpu));
|
||||
if (unlikely(retval))
|
||||
return retval;
|
||||
|
||||
retval = cpu_cache_sysfs_init(cpu);
|
||||
set_cpus_allowed(current, oldmask);
|
||||
if (unlikely(retval < 0))
|
||||
return retval;
|
||||
|
||||
all_cpu_cache_info[cpu].kobj.parent = &sys_dev->kobj;
|
||||
kobject_set_name(&all_cpu_cache_info[cpu].kobj, "%s", "cache");
|
||||
all_cpu_cache_info[cpu].kobj.ktype = &cache_ktype_percpu_entry;
|
||||
retval = kobject_register(&all_cpu_cache_info[cpu].kobj);
|
||||
|
||||
for (i = 0; i < all_cpu_cache_info[cpu].num_cache_leaves; i++) {
|
||||
this_object = LEAF_KOBJECT_PTR(cpu,i);
|
||||
this_object->kobj.parent = &all_cpu_cache_info[cpu].kobj;
|
||||
kobject_set_name(&(this_object->kobj), "index%1lu", i);
|
||||
this_object->kobj.ktype = &cache_ktype;
|
||||
retval = kobject_register(&(this_object->kobj));
|
||||
if (unlikely(retval)) {
|
||||
for (j = 0; j < i; j++) {
|
||||
kobject_unregister(
|
||||
&(LEAF_KOBJECT_PTR(cpu,j)->kobj));
|
||||
}
|
||||
kobject_unregister(&all_cpu_cache_info[cpu].kobj);
|
||||
cpu_cache_sysfs_exit(cpu);
|
||||
break;
|
||||
}
|
||||
}
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* Remove cache interface for CPU device */
|
||||
static int __cpuinit cache_remove_dev(struct sys_device * sys_dev)
|
||||
{
|
||||
unsigned int cpu = sys_dev->id;
|
||||
unsigned long i;
|
||||
|
||||
for (i = 0; i < all_cpu_cache_info[cpu].num_cache_leaves; i++)
|
||||
kobject_unregister(&(LEAF_KOBJECT_PTR(cpu,i)->kobj));
|
||||
|
||||
if (all_cpu_cache_info[cpu].kobj.parent) {
|
||||
kobject_unregister(&all_cpu_cache_info[cpu].kobj);
|
||||
memset(&all_cpu_cache_info[cpu].kobj,
|
||||
0,
|
||||
sizeof(struct kobject));
|
||||
}
|
||||
|
||||
cpu_cache_sysfs_exit(cpu);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* When a cpu is hot-plugged, do a check and initiate
|
||||
* cache kobject if necessary
|
||||
*/
|
||||
static int __cpuinit cache_cpu_callback(struct notifier_block *nfb,
|
||||
unsigned long action, void *hcpu)
|
||||
{
|
||||
unsigned int cpu = (unsigned long)hcpu;
|
||||
struct sys_device *sys_dev;
|
||||
|
||||
sys_dev = get_cpu_sysdev(cpu);
|
||||
switch (action) {
|
||||
case CPU_ONLINE:
|
||||
cache_add_dev(sys_dev);
|
||||
break;
|
||||
case CPU_DEAD:
|
||||
cache_remove_dev(sys_dev);
|
||||
break;
|
||||
}
|
||||
return NOTIFY_OK;
|
||||
}
|
||||
|
||||
static struct notifier_block cache_cpu_notifier =
|
||||
{
|
||||
.notifier_call = cache_cpu_callback
|
||||
};
|
||||
|
||||
static int __cpuinit cache_sysfs_init(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
for_each_online_cpu(i) {
|
||||
cache_cpu_callback(&cache_cpu_notifier, CPU_ONLINE,
|
||||
(void *)(long)i);
|
||||
}
|
||||
|
||||
register_cpu_notifier(&cache_cpu_notifier);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
device_initcall(cache_sysfs_init);
|
||||
|
||||
|
|
|
@ -68,6 +68,7 @@
|
|||
#define PAL_SHUTDOWN 40 /* enter processor shutdown state */
|
||||
#define PAL_PREFETCH_VISIBILITY 41 /* Make Processor Prefetches Visible */
|
||||
#define PAL_LOGICAL_TO_PHYSICAL 42 /* returns information on logical to physical processor mapping */
|
||||
#define PAL_CACHE_SHARED_INFO 43 /* returns information on caches shared by logical processor */
|
||||
|
||||
#define PAL_COPY_PAL 256 /* relocate PAL procedures and PAL PMI */
|
||||
#define PAL_HALT_INFO 257 /* return the low power capabilities of processor */
|
||||
|
@ -130,7 +131,7 @@ typedef u64 pal_cache_line_state_t;
|
|||
#define PAL_CACHE_LINE_STATE_MODIFIED 3 /* Modified */
|
||||
|
||||
typedef struct pal_freq_ratio {
|
||||
u64 den : 32, num : 32; /* numerator & denominator */
|
||||
u32 den, num; /* numerator & denominator */
|
||||
} itc_ratio, proc_ratio;
|
||||
|
||||
typedef union pal_cache_config_info_1_s {
|
||||
|
@ -151,10 +152,10 @@ typedef union pal_cache_config_info_1_s {
|
|||
|
||||
typedef union pal_cache_config_info_2_s {
|
||||
struct {
|
||||
u64 cache_size : 32, /*cache size in bytes*/
|
||||
u32 cache_size; /*cache size in bytes*/
|
||||
|
||||
|
||||
alias_boundary : 8, /* 39-32 aliased addr
|
||||
u32 alias_boundary : 8, /* 39-32 aliased addr
|
||||
* separation for max
|
||||
* performance.
|
||||
*/
|
||||
|
@ -1647,6 +1648,33 @@ ia64_pal_logical_to_phys(u64 proc_number, pal_logical_to_physical_t *mapping)
|
|||
|
||||
return iprv.status;
|
||||
}
|
||||
|
||||
typedef struct pal_cache_shared_info_s
|
||||
{
|
||||
u64 num_shared;
|
||||
pal_proc_n_log_info1_t ppli1;
|
||||
pal_proc_n_log_info2_t ppli2;
|
||||
} pal_cache_shared_info_t;
|
||||
|
||||
/* Get information on logical to physical processor mappings. */
|
||||
static inline s64
|
||||
ia64_pal_cache_shared_info(u64 level,
|
||||
u64 type,
|
||||
u64 proc_number,
|
||||
pal_cache_shared_info_t *info)
|
||||
{
|
||||
struct ia64_pal_retval iprv;
|
||||
|
||||
PAL_CALL(iprv, PAL_CACHE_SHARED_INFO, level, type, proc_number);
|
||||
|
||||
if (iprv.status == PAL_STATUS_SUCCESS) {
|
||||
info->num_shared = iprv.v0;
|
||||
info->ppli1.ppli1_data = iprv.v1;
|
||||
info->ppli2.ppli2_data = iprv.v2;
|
||||
}
|
||||
|
||||
return iprv.status;
|
||||
}
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
||||
#endif /* _ASM_IA64_PAL_H */
|
||||
|
|
Loading…
Reference in a new issue