coresight: tmc: Decouple the perf buffer allocation from sysfs mode

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Currently the perf buffer allocation follows the below logic:
- if the required AUX buffer size if larger, allocate the buffer with
  the required size
- otherwise allocate the size reference to the sysfs buffer size

This is not useful as we only collect to one AUX data, so just try to
allocate the buffer match the AUX buffer size.

Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/linux-arm-kernel/df8967cd-2157-46a2-97d9-a1aea883cf63@arm.com/
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Junhao He <hejunhao3@h-partners.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20260121101543.2017014-4-wangyushan12@huawei.com

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Yicong Yang 2026-01-21 18:15:43 +08:00 • committed by Suzuki K Poulose

parent e6e43e82c7

commit eebe8dbd86

1 changed files with 9 additions and 21 deletions

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drivers/hwtracing/coresight/coresight-tmc-etr.c

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