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| author | Alan Cox <alc@FreeBSD.org> | 2004-07-30 20:38:30 +0000 |
|---|---|---|
| committer | Alan Cox <alc@FreeBSD.org> | 2004-07-30 20:38:30 +0000 |
| commit | 9bb0e0686177321598c25b25527322951d7c2c87 (patch) | |
| tree | faa2860aa76235455158a6f157cb6600621e1bb2 /sys/sparc64 | |
| parent | 9be60284a61cba925961107135ac54d265afff20 (diff) | |
| download | src-9bb0e0686177321598c25b25527322951d7c2c87.tar.gz src-9bb0e0686177321598c25b25527322951d7c2c87.zip | |
- Push down the acquisition and release of Giant into pmap_protect() on
those architectures without pmap locking.
- Eliminate the acquisition and release of Giant from vm_map_protect().
(Translation: mprotect(2) runs to completion without touching Giant on
alpha, amd64, i386 and ia64.)
Notes
Notes:
svn path=/head/; revision=132899
Diffstat (limited to 'sys/sparc64')
| -rw-r--r-- | sys/sparc64/sparc64/pmap.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/sparc64/sparc64/pmap.c b/sys/sparc64/sparc64/pmap.c index 304d81b98861..91ec4ff7d073 100644 --- a/sys/sparc64/sparc64/pmap.c +++ b/sys/sparc64/sparc64/pmap.c @@ -1208,13 +1208,16 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) pm->pm_context[PCPU_GET(cpuid)], sva, eva, prot); if ((prot & VM_PROT_READ) == VM_PROT_NONE) { + mtx_lock(&Giant); pmap_remove(pm, sva, eva); + mtx_unlock(&Giant); return; } if (prot & VM_PROT_WRITE) return; + mtx_lock(&Giant); vm_page_lock_queues(); if (eva - sva > PMAP_TSB_THRESH) { tsb_foreach(pm, NULL, sva, eva, pmap_protect_tte); @@ -1227,6 +1230,7 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) tlb_range_demap(pm, sva, eva - 1); } vm_page_unlock_queues(); + mtx_unlock(&Giant); } /* |