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-rw-r--r--kernel/perf_counter.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 2a5d4f525567..727624db5078 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -1657,9 +1657,7 @@ void perf_counter_do_pending(void)
* Callchain support -- arch specific
*/
-struct perf_callchain_entry *
-__attribute__((weak))
-perf_callchain(struct pt_regs *regs)
+__weak struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
{
return NULL;
}
@@ -1819,7 +1817,7 @@ void perf_counter_output(struct perf_counter *counter,
callchain = perf_callchain(regs);
if (callchain) {
- callchain_size = (2 + callchain->nr) * sizeof(u64);
+ callchain_size = (1 + callchain->nr) * sizeof(u64);
header.type |= __PERF_EVENT_CALLCHAIN;
header.size += callchain_size;
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