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

xpmem: support large page

Browse Source 
1. try to use as large page as possible on attach
2. pre-map resident remote pages on attach

Change-Id: I5580682a4199e94085a9bad9ce3958a0f14cdcea
This commit is contained in:
Yoshihisa Morizumi
2021-01-08 16:56:32 +09:00
committed by Masamichi Takagi
parent 3aaa5350f0
commit d2db639853
68 changed files with 4878 additions and 244 deletions
Download Patch File Download Diff File Expand all files Collapse all files

111
test/issues/1473/XTP_004.c Normal file
View File

@@ -0,0 +1,111 @@
#include <sched.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/mman.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/wait.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <xpmem.h>
#include <libgen.h>
#include "util.h"
#include "okng.h"
#define BUFF_SIZE 1024
int main(int argc, char **argv)
{
void *mem, *attach;
int ret = 0;
int status;
pid_t pid;
xpmem_segid_t segid;
xpmem_apid_t apid;
struct xpmem_addr addr;
key_t key = ftok(argv[0], 0);
int shmid;
printf("*** %s start ***\n", basename(argv[0]));
shmid = shmget(key, SZ_MEM, IPC_CREAT | 0660);
INTERR(shmid == -1, "shmget failed\n");
mem = mmap(0, SZ_MEM, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE |
MAP_HUGETLB | (LARGE_PAGE_SHIFT << MAP_HUGE_SHIFT), -1, 0);
INTERR(mem == NULL, "mmap failed\n");
memset(mem, 0, SZ_MEM);
fflush(0);
pid = fork();
INTERR(pid == -1, "fork failed\n");
if (pid == 0) {
/* Child process */
void *shm = shmat(shmid, NULL, 0);
INTERR(shm == (void *)-1, "shmat in child failed\n");
while ((segid = *(xpmem_segid_t *)shm) == 0) {
sched_yield();
};
ret = shmdt(shm);
INTERR(ret == -1, "shmdt failed\n");
apid = xpmem_get(segid, XPMEM_RDWR, XPMEM_PERMIT_MODE, NULL);
OKNG(apid != -1, "xpmem_get in child\n");
addr.apid = apid;
addr.offset = 0;
attach = xpmem_attach(addr, SZ_MEM, NULL);
OKNG(attach != (void *)-1, "xpmem_attach in child\n");
*((unsigned long *)attach) = TEST_VAL;
ret = xpmem_detach(attach);
OKNG(ret != -1, "xpmem_detach in child\n");
fflush(0);
_exit(0);
} else {
/* Parent process */
void *shm = shmat(shmid, NULL, 0);
struct shmid_ds buf;
INTERR(shm == (void *)-1, "shmat in parent failed\n");
segid = xpmem_make(mem, SZ_MEM, XPMEM_PERMIT_MODE,
(void *)0666);
OKNG(segid != -1, "xpmem_make in parent\n");
*(xpmem_segid_t *)shm = segid;
ret = waitpid(pid, &status, 0);
INTERR(ret == -1, "waitpid failed\n");
OKNG(*((unsigned long *)mem) == TEST_VAL,
"TEST_VAL found\n");
ret = shmctl(shmid, IPC_RMID, &buf);
INTERR(ret == -1, "shmctl failed\n");
ret = shmdt(shm);
INTERR(ret == -1, "shmdt failed\n");
ret = xpmem_remove(segid);
OKNG(ret != -1, "xpmem_remove in parent\n");
}
printf("*** %s PASSED\n\n", basename(argv[0]));
return 0;
out:
printf("*** %s FAILED\n\n", basename(argv[0]));
return -1;
}