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add hint to the processor that the code sequence is a spin-wait loop

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This commit is contained in:
Stefan Lankes 2016-04-13 22:56:00 +02:00
parent a0cc75c933
commit ec52e62d6d
1 changed files with 6 additions and 2 deletions
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8
hermit/kernel/syscall.c
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@ -519,6 +519,9 @@ size_t sys_rcce_malloc(int session_id, int ue)
kprintf("Map MPB of session %d at 0x%zx, using of slot %d, isle %d\n", session_id, vaddr, i, ue);
if (isle == ue)
memset((void*)vaddr, 0x0, RCCE_MPB_SIZE);
return vaddr;
out:
@ -554,8 +557,9 @@ int sys_rcce_fini(int session_id)
put_pages(rcce_mpb[i].mpb[isle], RCCE_MPB_SIZE / PAGE_SIZE);
rcce_mpb[i].mpb[isle] = 0;
for(j=0; (j<MAX_ISLE) && !rcce_mpb[i].mpb[j]; j++)
;
for(j=0; (j<MAX_ISLE) && !rcce_mpb[i].mpb[j]; j++) {
PAUSE;
}
// rest full session
if (j >= MAX_ISLE)