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sysfs: support /sys/devices/system/cpu/offline,online,possible,present

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This commit is contained in:
Yoichi Umezawa
2016-03-04 13:48:06 +09:00
parent 26c0180374
commit 7fac03d4de
2 changed files with 61 additions and 0 deletions
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57
executer/kernel/mcctrl/sysfs_files.c
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@@ -87,6 +87,62 @@ void setup_local_snooping_samples(ihk_os_t os)
return;
}
void setup_local_snooping_files(ihk_os_t os)
{
struct ihk_cpu_info *info;
struct mcctrl_usrdata *udp = ihk_host_os_get_usrdata(os);
struct sysfsm_bitmap_param param;
static unsigned long cpu_offline = 0x0;
int i;
int error;
info = ihk_os_get_cpu_info(os);
if (!info) {
eprintk("mcctrl:ihk_os_get_cpu_info failed.\n");
return;
}
memset(udp->cpu_online, 0, sizeof(udp->cpu_online));
for (i = 0; i < info->n_cpus; i++) {
udp->cpu_online[i / BITS_PER_LONG] =
udp->cpu_online[i / BITS_PER_LONG] | (1 << (i % BITS_PER_LONG));
}
param.nbits = CPU_LONGS * BITS_PER_LONG;
param.ptr = udp->cpu_online;
dprintk("mcctrl:setup_local_snooping_files: CPU_LONGS=%d, BITS_PER_LONG=%d\n",
CPU_LONGS, BITS_PER_LONG);
error = sysfsm_createf(os, SYSFS_SNOOPING_OPS_pbl, &param, 0444,
"/sys/devices/system/cpu/online");
if (error) {
panic("setup_local_snooping_files: devices/system/cpu/online");
}
error = sysfsm_createf(os, SYSFS_SNOOPING_OPS_pbl, &param, 0444,
"/sys/devices/system/cpu/possible");
if (error) {
panic("setup_local_snooping_files: devices/system/cpu/possible");
}
error = sysfsm_createf(os, SYSFS_SNOOPING_OPS_pbl, &param, 0444,
"/sys/devices/system/cpu/present");
if (error) {
panic("setup_local_snooping_files: devices/system/cpu/present");
}
param.nbits = BITS_PER_LONG;
param.ptr = &cpu_offline;
error = sysfsm_createf(os, SYSFS_SNOOPING_OPS_pbl, &param, 0444,
"/sys/devices/system/cpu/offline");
if (error) {
panic("setup_local_snooping_files: devices/system/cpu/offline");
}
return;
}
void setup_sysfs_files(ihk_os_t os)
{
static int a_value = 35;
@@ -120,6 +176,7 @@ void setup_sysfs_files(ihk_os_t os)
}
setup_local_snooping_samples(os);
setup_local_snooping_files(os);
return;
} /* setup_files() */