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xpmem: support large page

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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
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79
test/issues/1473/xpmem_make01.c Normal file
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#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"
int main(int argc, char **argv)
{
void *mem, *attach;
int ret;
int status;
pid_t pid;
xpmem_segid_t segid;
xpmem_apid_t apid;
struct xpmem_addr addr;
START("xpmem_make size: -1\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 == MAP_FAILED, "mmap failed\n");
memset(mem, 0, SZ_MEM);
segid = xpmem_make(0, -1, XPMEM_PERMIT_MODE, (void *)0666);
OKNG(segid != -1, "xpmem_make returned %lx\n", (unsigned long)segid);
fflush(0);
pid = fork();
INTERR(pid == -1, "fork failed\n");
if (pid == 0) {
/* Child process */
apid = xpmem_get(segid, XPMEM_RDWR, XPMEM_PERMIT_MODE, NULL);
OKNG(apid != -1, "child: xpmem_get returned %lx\n",
(unsigned long)apid);
addr.apid = apid;
addr.offset = (unsigned long)mem;
attach = xpmem_attach(addr, SZ_MEM, NULL);
OKNG(attach != (void *)-1, "child: xpmem_attach returned %lx\n",
(unsigned long)attach);
*((unsigned long *)attach) = TEST_VAL;
ret = xpmem_detach(attach);
OKNG(ret != -1, "child: xpmem_detach returned %d\n",
ret);
fflush(0);
_exit(0);
} else {
/* Parent process */
ret = waitpid(pid, &status, 0);
INTERR(ret == -1, "waitpid failed\n");
OKNG(*((unsigned long *)mem) == TEST_VAL,
"parent: TEST_VAL found\n");
ret = xpmem_remove(segid);
OKNG(ret != -1, "parent: xpmem_remove returned %d\n",
errno);
}
return 0;
out:
return 1;
}