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Subject[PATCH v3 2/8] powerpc/perf/hv-24x7: Simplify extracting counter from result buffer
Date
Simplify code that extracts a 24x7 counter from the HCALL's result buffer.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
arch/powerpc/perf/hv-24x7.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index 9d73c69..4d1a8d1 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -1104,7 +1104,7 @@ static unsigned long single_24x7_request(struct perf_event *event, u64 *count)
unsigned long ret;
struct hv_24x7_request_buffer *request_buffer;
struct hv_24x7_data_result_buffer *result_buffer;
- struct hv_24x7_result *resb;
+ __be64 val;

BUILD_BUG_ON(sizeof(*request_buffer) > 4096);
BUILD_BUG_ON(sizeof(*result_buffer) > 4096);
@@ -1125,8 +1125,8 @@ static unsigned long single_24x7_request(struct perf_event *event, u64 *count)
}

/* process result from hcall */
- resb = &result_buffer->results[0];
- *count = be64_to_cpu(resb->elements[0].element_data[0]);
+ val = result_buffer->results[0].elements[0].element_data[0];
+ *count = be64_to_cpu(val);

out:
put_cpu_var(hv_24x7_reqb);
--
1.7.9.5


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