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NUMA: hide non-existing nodes from /sys/devices/system/node listing

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This commit is contained in:
Balazs Gerofi
2016-11-05 16:12:08 +09:00
parent 259583e936
commit 69a5c53074
5 changed files with 75 additions and 0 deletions
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13
executer/kernel/mcctrl/control.c
View File

@ -450,6 +450,16 @@ static long mcexec_get_cpu(ihk_os_t os)
return info->n_cpus;
}
static long mcexec_get_nodes(ihk_os_t os)
{
struct mcctrl_usrdata *usrdata = ihk_host_os_get_usrdata(os);
if (!usrdata || !usrdata->mem_info)
return -EINVAL;
return usrdata->mem_info->n_numa_nodes;
}
int mcctrl_add_per_proc_data(struct mcctrl_usrdata *ud, int pid,
struct mcctrl_per_proc_data *ppd)
{
@ -1268,6 +1278,9 @@ long __mcctrl_control(ihk_os_t os, unsigned int req, unsigned long arg,
case MCEXEC_UP_GET_CPU:
return mcexec_get_cpu(os);
case MCEXEC_UP_GET_NODES:
return mcexec_get_nodes(os);
case MCEXEC_UP_STRNCPY_FROM_USER:
return mcexec_strncpy_from_user(os,
(struct strncpy_from_user_desc *)arg);

1
executer/kernel/mcctrl/driver.c
View File

@ -60,6 +60,7 @@ static struct ihk_os_user_call_handler mcctrl_uchs[] = {
{ .request = MCEXEC_UP_LOAD_SYSCALL, .func = mcctrl_ioctl },
{ .request = MCEXEC_UP_SEND_SIGNAL, .func = mcctrl_ioctl },
{ .request = MCEXEC_UP_GET_CPU, .func = mcctrl_ioctl },
{ .request = MCEXEC_UP_GET_NODES, .func = mcctrl_ioctl },
{ .request = MCEXEC_UP_STRNCPY_FROM_USER, .func = mcctrl_ioctl },
{ .request = MCEXEC_UP_NEW_PROCESS, .func = mcctrl_ioctl },
{ .request = MCEXEC_UP_PREPARE_DMA, .func = mcctrl_ioctl },

2
executer/kernel/mcctrl/sysfs_files.c
View File

@ -679,6 +679,8 @@ static int setup_node_files(struct mcctrl_usrdata *udp)
param.ptr = &udp->numa_online;
sysfsm_createf(udp->os, SYSFS_SNOOPING_OPS_pbl, &param, 0444,
"/sys/devices/system/node/online");
sysfsm_createf(udp->os, SYSFS_SNOOPING_OPS_pbl, &param, 0444,
"/sys/devices/system/node/possible");
list_for_each_entry(p, &udp->node_topology_list, chain) {
struct sysfs_handle handle;