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perf dso: Simplify dso_cache__read function

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There's no need for the while loop now, also we can connect two (ret >
0) condition legs together.

Signed-off-by: Jiri Olsa <[email protected]>
Acked-by: Song Liu <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Song Liu <[email protected]>
Cc: Stanislav Fomichev <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Jiri Olsa 2019-05-08 15:20:01 +02:00 • committed by Arnaldo Carvalho de Melo
commit cacddfe7b0
1 changed files with 6 additions and 11 deletions
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17
tools/perf/util/dso.c
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@ -823,25 +823,20 @@ static ssize_t
dso_cache__read(struct dso *dso, struct machine *machine,
u64 offset, u8 *data, ssize_t size)
{
u64 cache_offset = offset & DSO__DATA_CACHE_MASK;
struct dso_cache *cache;
struct dso_cache *old;
ssize_t ret;
do {
u64 cache_offset = offset & DSO__DATA_CACHE_MASK;
cache = zalloc(sizeof(*cache) + DSO__DATA_CACHE_SIZE);
if (!cache)
return -ENOMEM;
ret = file_read(dso, machine, cache_offset, cache->data);
cache = zalloc(sizeof(*cache) + DSO__DATA_CACHE_SIZE);
if (!cache)
return -ENOMEM;
ret = file_read(dso, machine, cache_offset, cache->data);
if (ret > 0) {
cache->offset = cache_offset;
cache->size = ret;
} while (0);
if (ret > 0) {
old = dso_cache__insert(dso, cache);
if (old) {
/* we lose the race */