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update PAPI support. other process and child process monitoring.

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This commit is contained in:
Ken Sato
2016-04-26 19:01:47 +09:00
parent 921280f85c
commit 130b1f4327
7 changed files with 259 additions and 88 deletions
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22
arch/x86/kernel/perfctr.c
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@@ -14,18 +14,24 @@
#include <registers.h>
extern unsigned int *x86_march_perfmap;
static unsigned long pmc_status = 0x0;
#define X86_CR4_PCE 0x00000100
void x86_init_perfctr(void)
{
unsigned long reg;
unsigned long value = 0;
/* Allow PMC to be read from user space */
asm volatile("movq %%cr4, %0" : "=r"(reg));
reg |= X86_CR4_PCE;
asm volatile("movq %0, %%cr4" : : "r"(reg));
/* Enable PMC Control */
value = rdmsr(MSR_PERF_GLOBAL_CTRL);
value |= X86_IA32_PERF_COUNTERS_MASK;
value |= X86_IA32_FIXED_PERF_COUNTERS_MASK;
wrmsr(MSR_PERF_GLOBAL_CTRL, value);
}
static int set_perfctr_x86_direct(int counter, int mode, unsigned int value)
@@ -287,7 +293,7 @@ unsigned long ihk_mc_perfctr_read_msr(int counter)
return retval;
}
int ihk_mc_perfctr_alloc_counter()
int ihk_mc_perfctr_alloc_counter(unsigned long pmc_status)
{
int i = 0;
int ret = -1;
@@ -307,15 +313,3 @@ int ihk_mc_perfctr_alloc_counter()
return ret;
}
void ihk_mc_perfctr_release_counter(int counter)
{
unsigned long value = 0;
value = rdmsr(MSR_PERF_GLOBAL_CTRL);
value &= ~(1UL << counter);
pmc_status &= ~(1UL << counter);
wrmsr(MSR_PERF_GLOBAL_CTRL, 0);
}