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- Log ----------------------------------------------------------------- commit 04b0be7579f77821418c0c7c524950af6aeab6a6 Author: Brian Brooks brian.brooks@linaro.org Date: Thu Jan 26 21:31:43 2017 -0600

linux-generic: add ARM odp_cpu_pause()

Signed-off-by: Brian Brooks brian.brooks@linaro.org Reviewed-by: Bill Fischofer bill.fischofer@linaro.org Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org

diff --git a/platform/linux-generic/arch/arm/odp/api/cpu_arch.h b/platform/linux-generic/arch/arm/odp/api/cpu_arch.h index 22b1da2..7c75a69 100644 --- a/platform/linux-generic/arch/arm/odp/api/cpu_arch.h +++ b/platform/linux-generic/arch/arm/odp/api/cpu_arch.h @@ -15,6 +15,12 @@ extern "C" {

static inline void odp_cpu_pause(void) { + /* YIELD hints the CPU to switch to another thread if possible + * and executes as a NOP otherwise. + * ISB flushes the pipeline, then restarts. This is guaranteed to + * stall the CPU a number of cycles. + */ + __asm volatile("isb" ::: "memory"); }

#ifdef __cplusplus

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Summary of changes: platform/linux-generic/arch/arm/odp/api/cpu_arch.h | 6 ++++++ 1 file changed, 6 insertions(+)

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