Messages in this thread Patch in this message | | | From | Alexander Shishkin <> | Subject | [PATCH 2/3] perf/x86/intel/bts: Kill a silly warning | Date | Tue, 23 Aug 2016 11:54:33 +0300 |
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At the moment, intel_bts will WARN() out if there is more than one event writing to the same ring buffer, via SET_OUTPUT, and will only send data from one event to a buffer.
There is no reason to have this warning in, so kill it.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> --- arch/x86/events/intel/bts.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c index 0b8ccff564..41975c6c2d 100644 --- a/arch/x86/events/intel/bts.c +++ b/arch/x86/events/intel/bts.c @@ -363,8 +363,6 @@ bts_buffer_reset(struct bts_buffer *buf, struct perf_output_handle *handle) return 0; head = handle->head & ((buf->nr_pages << PAGE_SHIFT) - 1); - if (WARN_ON_ONCE(head != local_read(&buf->head))) - return -EINVAL; phys = &buf->buf[buf->cur_buf]; space = phys->offset + phys->displacement + phys->size - head; -- 2.8.1
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