RK3288 7.1 内存作假，cpu频率扩大

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我是靠谱客的博主简单宝马，最近开发中收集的这篇文章主要介绍RK3288 7.1 内存作假，cpu频率扩大，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

有时候我们客户需要我们在内存和cpu做手脚，但是又不能只是在Settings里面修改，因为那样会被安兔兔检查出来，

我们可以在内核里面修改，安兔兔最终测试的途径也是测试内核生成的一些特定节点，以下是补丁，基于rk3288 7.1的版本，其他

的版本可以参考修改，原理都是相同的。

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 875f22f..d54426c 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -668,11 +668,23 @@ static ssize_t show_##file_name
    return sprintf(buf, "%un", policy->object);
}

+
+static ssize_t show_scaling_max_freq(struct cpufreq_policy *policy, char *buf)
+{
+   printk("hxl policy->object == n");
+   return sprintf(buf, "%un", 1800000);
+}
+
+static ssize_t show_cpuinfo_max_freq(struct cpufreq_policy *policy, char *buf)
+{
+   printk("hxl cpuinfo_max_freq == n");
+   return sprintf(buf, "%un", 1800000);
+}
show_one(cpuinfo_min_freq, cpuinfo.min_freq);
-show_one(cpuinfo_max_freq, cpuinfo.max_freq);
+//show_one(cpuinfo_max_freq, cpuinfo.max_freq);
show_one(cpuinfo_transition_latency, cpuinfo.transition_latency);
show_one(scaling_min_freq, min);
-show_one(scaling_max_freq, max);
+//show_one(scaling_max_freq, max);

static ssize_t show_scaling_cur_freq(struct cpufreq_policy *policy, char *buf)
{
@@ -1276,6 +1288,7 @@ static int cpufreq_online(unsigned int cpu)
    */
    cpumask_and(policy->cpus, policy->cpus, cpu_online_mask);

+
    if (new_policy) {
        policy->user_policy.min = policy->min;
        policy->user_policy.max = policy->max;
@@ -1959,7 +1972,10 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy,

    /* Make sure that target_freq is within supported range */
    if (target_freq > policy->max)
+   {
+       printk("target_freq ==== %dn",target_freq);
        target_freq = policy->max;
+   }
    if (target_freq < policy->min)
        target_freq = policy->min;

diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c
index a8f1daf..8d1bb87 100644
--- a/drivers/cpufreq/freq_table.c
+++ b/drivers/cpufreq/freq_table.c
@@ -257,6 +257,7 @@ static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf,

        count += sprintf(&buf[count], "%d ", pos->frequency);
    }
+   count += sprintf(&buf[count], "%d ", 1800000000);
    count += sprintf(&buf[count], "n");

    return count;
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index df4661a..6116081 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -23,6 +23,13 @@ void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
{
}

+#define FAKE_RAM_SIZE 4194304000
+
+#define SHIFT 10
+__kernel_ulong_t size;
+__kernel_ulong_t ratio;
+
+
static int meminfo_proc_show(struct seq_file *m, void *v)
{
    struct sysinfo i;
@@ -51,6 +58,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
    for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++)
        pages[lru] = global_page_state(NR_LRU_BASE + lru);

+   size = FAKE_RAM_SIZE >> PAGE_SHIFT;
+   ratio = (size << SHIFT) / i.totalram;
+
    for_each_zone(zone)
        wmark_low += zone->watermark[WMARK_LOW];

@@ -140,8 +150,10 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
        "CmaFree: %8lu kBn"
#endif
        ,
-       K(i.totalram),
-       K(i.freeram),
+       //K(i.totalram),
+       //K(i.freeram),
+       K(size),
+       K((i.freeram * ratio) >> SHIFT),
        K(available),
        K(i.bufferram),
        K(cached),
@@ -155,10 +167,14 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
        K(pages[LRU_UNEVICTABLE]),
        K(global_page_state(NR_MLOCK)),
#ifdef CONFIG_HIGHMEM
-       K(i.totalhigh),
-       K(i.freehigh),
-       K(i.totalram-i.totalhigh),
-       K(i.freeram-i.freehigh),
+       //K(i.totalhigh),
+       //K(i.freehigh),
+       //K(i.totalram-i.totalhigh),
+       //K(i.freeram-i.freehigh),
+       K((i.totalhigh * ratio) >> SHIFT),
+       K((i.freehigh * ratio) >> SHIFT),
+       K(size - ((i.totalhigh * ratio) >> SHIFT)),
+       K((i.freeram - i.freehigh) * ratio >> SHIFT),
#endif
#ifndef CONFIG_MMU
        K((unsigned long) atomic_long_read(&mmap_pages_allocated)),