From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/drivers/base/cacheinfo.c | 58 ++++++++++++++++++++++++++++++++++++----------------------
1 files changed, 36 insertions(+), 22 deletions(-)
diff --git a/kernel/drivers/base/cacheinfo.c b/kernel/drivers/base/cacheinfo.c
index ce015ce..bfc0959 100644
--- a/kernel/drivers/base/cacheinfo.c
+++ b/kernel/drivers/base/cacheinfo.c
@@ -213,6 +213,8 @@
return -ENOTSUPP;
}
+unsigned int coherency_max_size;
+
static int cache_shared_cpu_map_setup(unsigned int cpu)
{
struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
@@ -251,6 +253,9 @@
cpumask_set_cpu(i, &this_leaf->shared_cpu_map);
}
}
+ /* record the maximum cache line size */
+ if (this_leaf->coherency_line_size > coherency_max_size)
+ coherency_max_size = this_leaf->coherency_line_size;
}
return 0;
@@ -357,7 +362,7 @@
struct device_attribute *attr, char *buf) \
{ \
struct cacheinfo *this_leaf = dev_get_drvdata(dev); \
- return sprintf(buf, "%u\n", this_leaf->object); \
+ return sysfs_emit(buf, "%u\n", this_leaf->object); \
}
show_one(id, id);
@@ -372,44 +377,48 @@
{
struct cacheinfo *this_leaf = dev_get_drvdata(dev);
- return sprintf(buf, "%uK\n", this_leaf->size >> 10);
-}
-
-static ssize_t shared_cpumap_show_func(struct device *dev, bool list, char *buf)
-{
- struct cacheinfo *this_leaf = dev_get_drvdata(dev);
- const struct cpumask *mask = &this_leaf->shared_cpu_map;
-
- return cpumap_print_to_pagebuf(list, buf, mask);
+ return sysfs_emit(buf, "%uK\n", this_leaf->size >> 10);
}
static ssize_t shared_cpu_map_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return shared_cpumap_show_func(dev, false, buf);
+ struct cacheinfo *this_leaf = dev_get_drvdata(dev);
+ const struct cpumask *mask = &this_leaf->shared_cpu_map;
+
+ return sysfs_emit(buf, "%*pb\n", nr_cpu_ids, mask);
}
static ssize_t shared_cpu_list_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return shared_cpumap_show_func(dev, true, buf);
+ struct cacheinfo *this_leaf = dev_get_drvdata(dev);
+ const struct cpumask *mask = &this_leaf->shared_cpu_map;
+
+ return sysfs_emit(buf, "%*pbl\n", nr_cpu_ids, mask);
}
static ssize_t type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct cacheinfo *this_leaf = dev_get_drvdata(dev);
+ const char *output;
switch (this_leaf->type) {
case CACHE_TYPE_DATA:
- return sprintf(buf, "Data\n");
+ output = "Data";
+ break;
case CACHE_TYPE_INST:
- return sprintf(buf, "Instruction\n");
+ output = "Instruction";
+ break;
case CACHE_TYPE_UNIFIED:
- return sprintf(buf, "Unified\n");
+ output = "Unified";
+ break;
default:
return -EINVAL;
}
+
+ return sysfs_emit(buf, "%s\n", output);
}
static ssize_t allocation_policy_show(struct device *dev,
@@ -417,15 +426,18 @@
{
struct cacheinfo *this_leaf = dev_get_drvdata(dev);
unsigned int ci_attr = this_leaf->attributes;
- int n = 0;
+ const char *output;
if ((ci_attr & CACHE_READ_ALLOCATE) && (ci_attr & CACHE_WRITE_ALLOCATE))
- n = sprintf(buf, "ReadWriteAllocate\n");
+ output = "ReadWriteAllocate";
else if (ci_attr & CACHE_READ_ALLOCATE)
- n = sprintf(buf, "ReadAllocate\n");
+ output = "ReadAllocate";
else if (ci_attr & CACHE_WRITE_ALLOCATE)
- n = sprintf(buf, "WriteAllocate\n");
- return n;
+ output = "WriteAllocate";
+ else
+ return 0;
+
+ return sysfs_emit(buf, "%s\n", output);
}
static ssize_t write_policy_show(struct device *dev,
@@ -436,9 +448,9 @@
int n = 0;
if (ci_attr & CACHE_WRITE_THROUGH)
- n = sprintf(buf, "WriteThrough\n");
+ n = sysfs_emit(buf, "WriteThrough\n");
else if (ci_attr & CACHE_WRITE_BACK)
- n = sprintf(buf, "WriteBack\n");
+ n = sysfs_emit(buf, "WriteBack\n");
return n;
}
@@ -613,6 +625,8 @@
this_leaf = this_cpu_ci->info_list + i;
if (this_leaf->disable_sysfs)
continue;
+ if (this_leaf->type == CACHE_TYPE_NOCACHE)
+ break;
cache_groups = cache_get_attribute_groups(this_leaf);
ci_dev = cpu_device_create(parent, this_leaf, cache_groups,
"index%1u", i);
--
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