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add syscalls (pmc_init, pmc_start, pmc_stop, pmc_reset) for performance monitoring instructions

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This commit is contained in:
Masamichi Takagi m-takagi@ab.jp.nec.com
2012-11-02 20:53:02 +09:00
parent 790ae3a9c7
commit 2698cb85c9
3 changed files with 137 additions and 30 deletions
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113
kernel/syscall.c
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@ -17,6 +17,7 @@
#include <rlimit.h>
#include <affinity.h>
#include <time.h>
#include <aal/perfctr.h>
/* Headers taken from kitten LWK */
#include <lwk/stddef.h>
@ -979,6 +980,71 @@ SYSCALL_DECLARE(noop)
return -EFAULT;
}
#ifdef DCFA_KMOD
extern int ibmic_cmd_syscall(char *uargs);
extern int dcfampi_cmd_syscall(char *uargs);
static int (*mod_call_table[]) (char *) = {
[1] = ibmic_cmd_syscall,
[2] = dcfampi_cmd_syscall,
};
SYSCALL_DECLARE(mod_call) {
int mod_id;
unsigned long long uargs;
mod_id = aal_mc_syscall_arg0(ctx);
uargs = aal_mc_syscall_arg1(ctx);
dkprintf("mod_call id:%d, uargs=0x%llx, type=%s, command=%x\n", mod_id, uargs, mod_id==1?"ibmic":"dcfampi", *((uint32_t*)(((char*)uargs)+0)));
if(mod_call_table[mod_id])
return mod_call_table[mod_id]((char*)uargs);
return -ENOSYS;
}
#endif
SYSCALL_DECLARE(process_data_section) {
unsigned long s = cpu_local_var(current)->vm->region.data_start;
unsigned long e = cpu_local_var(current)->vm->region.data_end;
*((unsigned long*)aal_mc_syscall_arg0(ctx)) = s;
*((unsigned long*)aal_mc_syscall_arg1(ctx)) = e;
return 0;
}
/* select counter type */
SYSCALL_DECLARE(pmc_init)
{
int counter = aal_mc_syscall_arg0(ctx);
enum aal_perfctr_type type = (enum aal_perfctr_type)aal_mc_syscall_arg1(ctx);
/* see aal/manycore/generic/include/aal/perfctr.h */
int mode = PERFCTR_USER_MODE;
return aal_mc_perfctr_init(counter, type, mode);
}
SYSCALL_DECLARE(pmc_start)
{
unsigned long counter = aal_mc_syscall_arg0(ctx);
return aal_mc_perfctr_start(1 << counter);
}
SYSCALL_DECLARE(pmc_stop)
{
unsigned long counter = aal_mc_syscall_arg0(ctx);
return aal_mc_perfctr_stop(1 << counter);
}
SYSCALL_DECLARE(pmc_reset)
{
int counter = aal_mc_syscall_arg0(ctx);
return aal_mc_perfctr_reset(counter);
}
static long (*syscall_table[])(int, aal_mc_user_context_t *) = {
[0] = sys_read,
[1] = sys_write,
@ -1025,6 +1091,14 @@ static long (*syscall_table[])(int, aal_mc_user_context_t *) = {
[234] = sys_tgkill,
[273] = sys_set_robust_list,
[288] = NULL,
#ifdef DCFA_KMOD
[303] = sys_mod_call,
#endif
[502] = sys_process_data_section,
[601] = sys_pmc_init,
[602] = sys_pmc_start,
[603] = sys_pmc_stop,
[604] = sys_pmc_reset,
};
static char *syscall_name[] = {
@ -1075,6 +1149,14 @@ static char *syscall_name[] = {
[234] = "sys_tgkill",
[273] = "sys_set_robust_list",
[288] = "NULL",
#ifdef DCFA_KMOD
[303] = "sys_mod_call",
#endif
[502] = "process_data_section",
[601] = "sys_pmc_init",
[602] = "sys_pmc_start",
[603] = "sys_pmc_stop",
[604] = "sys_pmc_reset",
};
#if 0
@ -1098,11 +1180,32 @@ long syscall(int num, aal_mc_user_context_t *ctx)
cpu_enable_interrupt();
dkprintf("SC(%d)[%3d=%s](%lx, %lx) @ %lx | %lx = ",
aal_mc_get_processor_id(),
num, syscall_name[num],
aal_mc_syscall_arg0(ctx), aal_mc_syscall_arg1(ctx),
aal_mc_syscall_pc(ctx), aal_mc_syscall_sp(ctx));
#if 0
if(num != 24) // if not sched_yield
#endif
dkprintf("SC(%d:%d)[%3d=%s](%lx, %lx,%lx, %lx, %lx, %lx)@%lx,sp:%lx",
aal_mc_get_processor_id(),
aal_mc_get_hardware_processor_id(),
num, syscall_name[num],
aal_mc_syscall_arg0(ctx), aal_mc_syscall_arg1(ctx),
aal_mc_syscall_arg2(ctx), aal_mc_syscall_arg3(ctx),
aal_mc_syscall_arg4(ctx), aal_mc_syscall_arg5(ctx),
aal_mc_syscall_pc(ctx), aal_mc_syscall_sp(ctx));
#if 1
#if 0
if(num != 24) // if not sched_yield
#endif
dkprintf(",*sp:%lx,*(sp+8):%lx,*(sp+16):%lx,*(sp+24):%lx",
*((unsigned long*)aal_mc_syscall_sp(ctx)),
*((unsigned long*)(aal_mc_syscall_sp(ctx)+8)),
*((unsigned long*)(aal_mc_syscall_sp(ctx)+16)),
*((unsigned long*)(aal_mc_syscall_sp(ctx)+24)));
#endif
#if 0
if(num != 24) // if not sched_yield
#endif
dkprintf("\n");
if (syscall_table[num]) {
l = syscall_table[num](num, ctx);