[PATCH v2 12/17] coresight: trbe: Add a helper to fetch cpudata from perf handle
From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: 2021-09-21 13:42:04
Also in:
lkml
Subsystem:
arm/coresight framework and drivers, hardware tracing facilities, the rest · Maintainers:
Suzuki K Poulose, Alexander Shishkin, Linus Torvalds
Add a helper to get the CPU specific data for TRBE instance, from a given perf handle. This also adds extra checks to make sure that the event associated with the handle is "bound" to the CPU and is active on the TRBE. Cc: Anshuman Khandual <redacted> Cc: Mike Leach <redacted> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Leo Yan <redacted> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- drivers/hwtracing/coresight/coresight-trbe.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
index 983dd5039e52..797d978f9fa7 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.c
+++ b/drivers/hwtracing/coresight/coresight-trbe.c@@ -268,6 +268,15 @@ static unsigned long trbe_snapshot_offset(struct perf_output_handle *handle) return buf->nr_pages * PAGE_SIZE; } +static inline struct trbe_cpudata * +trbe_handle_to_cpudata(struct perf_output_handle *handle) +{ + struct trbe_buf *buf = etm_perf_sink_config(handle); + + BUG_ON(!buf || !buf->cpudata); + return buf->cpudata; +} + /* * TRBE Limit Calculation *
@@ -533,8 +542,7 @@ static enum trbe_fault_action trbe_get_fault_act(struct perf_output_handle *hand { int ec = get_trbe_ec(trbsr); int bsc = get_trbe_bsc(trbsr); - struct trbe_buf *buf = etm_perf_sink_config(handle); - struct trbe_cpudata *cpudata = buf->cpudata; + struct trbe_cpudata *cpudata = trbe_handle_to_cpudata(handle); WARN_ON(is_trbe_running(trbsr)); if (is_trbe_trg(trbsr) || is_trbe_abort(trbsr))
--
2.24.1
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