[PATCH v2 0/2] perf: arm_spe: Fix trace disabling for invalid limits
Leo Yan
leo.yan at arm.com
Mon Nov 10 08:28:30 PST 2025
This series fixes trace disabling issues that occur when failed to
calculate a valid limit (E.g., due to buffer overflow or insufficient
space during padding).
The first patch improves arm_spe_perf_aux_output_begin() for failure
handling, ensuring that all failure cases set the PERF_HES_STOPPED
flag.
The second patch applies the profiling buffer disable flow in the
interrupt handler when the PERF_HES_STOPPED flag has been set.
This series has been verified on Orion6 board.
Signed-off-by: Leo Yan <leo.yan at arm.com>
---
Changes in v2:
- Added the patch 01.
- Did not rely on irq work for disabling as the disable callback will
skip operations after PERF_HES_STOPPED flag has been set.
- Link to v1: https://lore.kernel.org/r/20251015-arm_spe_fix_truncated_flag-v1-1-555e328cba05@arm.com
---
Leo Yan (2):
perf: arm_spe: Correct setting the PERF_HES_STOPPED flag
perf: arm_spe: Ensure profiling buffer is properly disabled
drivers/perf/arm_spe_pmu.c | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)
---
base-commit: e9a6fb0bcdd7609be6969112f3fbfcce3b1d4a7c
change-id: 20251015-arm_spe_fix_truncated_flag-1a5b3620a3ab
Best regards,
--
Leo Yan <leo.yan at arm.com>
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