gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mcexec: memory policy control by environmental variable

Browse Source 
Refs: #1470
Change-Id: I3d556cae90d31d81572b1c4e5c680e826577d428
This commit is contained in:
Masamichi Takagi
2020-12-15 14:17:32 +09:00
parent ed670c03af
commit 33dd2e60b1
21 changed files with 729 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
kernel/host.c
View File

@@ -542,6 +542,26 @@ static int process_msg_prepare_process(unsigned long rphys)
}
vm->numa_mem_policy = MPOL_BIND;
}
else if (pn->mpol_mode != MPOL_MAX) {
int bit;
vm->numa_mem_policy = pn->mpol_mode;
memset(&vm->numa_mask, 0, sizeof(vm->numa_mask));
for_each_set_bit(bit, pn->mpol_nodemask,
PLD_PROCESS_NUMA_MASK_BITS) {
if (bit >= ihk_mc_get_nr_numa_nodes()) {
kprintf("%s: error: NUMA id %d is larger than mask size!\n",
__func__, bit);
return -EINVAL;
}
set_bit(bit, &vm->numa_mask[0]);
}
dkprintf("%s: numa_mem_policy: %d, numa_mask: %ld\n",
__func__, vm->numa_mem_policy, vm->numa_mask[0]);
}
proc->uti_thread_rank = pn->uti_thread_rank;
proc->uti_use_last_cpu = pn->uti_use_last_cpu;

2
kernel/include/process.h
View File

@@ -559,6 +559,8 @@ struct process {
size_t mpol_threshold;
unsigned long heap_extension;
unsigned long mpol_bind_mask;
int mpol_mode;
int uti_thread_rank; /* Spawn on Linux CPU when clone_count reaches this */
int uti_use_last_cpu; /* Work-around not to share CPU with OpenMP thread */
int clone_count;

16
kernel/include/syscall.h
View File

@@ -183,6 +183,18 @@ typedef unsigned long __cpu_set_unit;
#define MPOL_NO_BSS 0x04
#define MPOL_SHM_PREMAP 0x08
/* should be the same as process.h */
#define PLD_PROCESS_NUMA_MASK_BITS 256
enum {
PLD_MPOL_DEFAULT,
PLD_MPOL_PREFERRED,
PLD_MPOL_BIND,
PLD_MPOL_INTERLEAVE,
PLD_MPOL_LOCAL,
PLD_MPOL_MAX, /* always last member of enum */
};
#define PLD_MAGIC 0xcafecafe44332211UL
struct program_load_desc {
@@ -217,6 +229,10 @@ struct program_load_desc {
unsigned long heap_extension;
long stack_premap;
unsigned long mpol_bind_mask;
int mpol_mode;
unsigned long mpol_nodemask[PLD_PROCESS_NUMA_MASK_BITS /
(sizeof(unsigned long) * 8)];
int thp_disable;
int uti_thread_rank; /* N-th clone() spawns a thread on Linux CPU */
int uti_use_last_cpu; /* Work-around not to share CPU with OpenMP thread */