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HiSilicon PCIe tune and trace device (PTT) could dynamically tune the PCIe link's events, and trace the TLP headers). This patch add support for PTT device in perf tool, so users could use 'perf record' to get TLP headers trace data. Reviewed-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Qi Liu <liuqi115@huawei.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Acked-by: John Garry <john.garry@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Bjorn Helgaas <helgaas@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jonathan Cameron <jonathan.cameron@huawei.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Qi Liu <liuqi6124@gmail.com> Cc: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com> Cc: Shaokun Zhang <zhangshaokun@hisilicon.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Zeng Prime <prime.zeng@huawei.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-pci@vger.kernel.org Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/20220927081400.14364-3-yangyicong@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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