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f74debbea0
Allowing multiple readers to access the trace data simultaniously via sysFS provides no shortage of opportunity for race condition, mandates two variable to be maintained (drvdata::read_count and drvdata::reading), makes the code complex and provide little advantages, if any. This patch streamlines the read process by restricting trace data access to a single user. That way drvdata::read_count can be eliminated and race conditions (along with faulty error handling) in function tmc_open() and tmc_release() eliminated. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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coresight-etb10.c | ||
coresight-etm3x-sysfs.c | ||
coresight-etm3x.c | ||
coresight-etm4x-sysfs.c | ||
coresight-etm4x.c | ||
coresight-etm4x.h | ||
coresight-etm-cp14.c | ||
coresight-etm-perf.c | ||
coresight-etm-perf.h | ||
coresight-etm.h | ||
coresight-funnel.c | ||
coresight-priv.h | ||
coresight-replicator-qcom.c | ||
coresight-replicator.c | ||
coresight-stm.c | ||
coresight-tmc-etf.c | ||
coresight-tmc-etr.c | ||
coresight-tmc.c | ||
coresight-tmc.h | ||
coresight-tpiu.c | ||
coresight.c | ||
Kconfig | ||
Makefile | ||
of_coresight.c |