enable_ccr.c File Reference

#include <linux/module.h>
#include <linux/kernel.h>

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Functions
void	enable_ccr (void *info)
int	init_module (void)
	MODULE_LICENSE ("CC0")

Function Documentation

enable_ccr()

void enable_ccr

(

void *

info

)

Definition at line 4 of file enable_ccr.c.

{
   #ifdef __aarch64__
   asm volatile("MSR PMUSERENR_EL0, %0" ::"r"(1));
   asm volatile("MSR PMCR_EL0, %0" ::"r"(1));
   asm volatile("MSR PMCNTENSET_EL0, %0" ::"r"(0x80000000));
   #else
   asm volatile("mcr p15, 0, %0, c9, c14, 0" :: "r"(1));
   asm volatile("mcr p15, 0, %0, c9, c12, 0" :: "r"(1 | 16));
   asm volatile("mcr p15, 0, %0, c9, c12, 1" :: "r"(0x8000000f));
   #endif
}

Referenced by init_module().

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init_module()

int init_module

(

void

)

Definition at line 17 of file enable_ccr.c.

{
   on_each_cpu(enable_ccr, NULL, 0);
   printk(KERN_INFO "Userspace access to CCR enabled\n");
   return 0;
}

References enable_ccr().

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MODULE_LICENSE()

MODULE_LICENSE

(

"CC0"

)