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| author | fche <fche> | 2007-05-29 19:24:36 +0000 |
|---|---|---|
| committer | fche <fche> | 2007-05-29 19:24:36 +0000 |
| commit | 4d88dfc7abf9e2b566136037bc405942c35a452c (patch) | |
| tree | 790190438f59d0f0cf1f7ed832c8ae113e90b9cf /runtime/map.c | |
| parent | 888af770ba125802efa0f9209064be7b5d000f87 (diff) | |
| download | systemtap-steved-4d88dfc7abf9e2b566136037bc405942c35a452c.tar.gz systemtap-steved-4d88dfc7abf9e2b566136037bc405942c35a452c.tar.xz systemtap-steved-4d88dfc7abf9e2b566136037bc405942c35a452c.zip | |
2007-05-29 Frank Ch. Eigler <fche@redhat.com>
PR 2224
* map.h (NEED_MAP_LOCKS): New config macro, defaults to 0.
(MAP_GET_CPU, MAP_PUT_CPU): Wrappers, default to ~no-op.
* map.c (_stp_pmap_clear,agg): Use them.
* pmap-gen.c (_stp_pmap_new,set,add,get_cpu,get,del): Ditto.
Diffstat (limited to 'runtime/map.c')
| -rw-r--r-- | runtime/map.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/runtime/map.c b/runtime/map.c index e4235901..2acf2fe2 100644 --- a/runtime/map.c +++ b/runtime/map.c @@ -369,9 +369,13 @@ void _stp_pmap_clear(PMAP pmap) for_each_cpu(i) { MAP m = per_cpu_ptr (pmap->map, i); +#if NEED_MAP_LOCKS spin_lock(&m->lock); +#endif _stp_map_clear(m); +#if NEED_MAP_LOCKS spin_unlock(&m->lock); +#endif } _stp_map_clear(&pmap->agg); } @@ -873,7 +877,9 @@ MAP _stp_pmap_agg (PMAP pmap) for_each_cpu(i) { m = per_cpu_ptr (pmap->map, i); +#if NEED_MAP_LOCKS spin_lock(&m->lock); +#endif /* walk the hash chains. */ for (hash = 0; hash < HASH_TABLE_SIZE; hash++) { head = &m->hashes[hash]; @@ -892,13 +898,17 @@ MAP _stp_pmap_agg (PMAP pmap) _stp_add_agg(aptr, ptr); else { if (!_stp_new_agg(agg, ahead, ptr)) { +#if NEED_MAP_LOCKS spin_unlock(&m->lock); +#endif return NULL; } } } } +#if NEED_MAP_LOCKS spin_unlock(&m->lock); +#endif } return agg; } |