Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Branch Record Buffer Extension Helpers.
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*
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* Copyright (C) 2022-2025 ARM Limited
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*
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* Author: Anshuman Khandual <anshuman.khandual@arm.com>
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*/
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struct arm_pmu;
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struct perf_branch_stack;
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struct perf_event;
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#ifdef CONFIG_ARM64_BRBE
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void brbe_probe(struct arm_pmu *arm_pmu);
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unsigned int brbe_num_branch_records(const struct arm_pmu *armpmu);
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void brbe_invalidate(void);
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void brbe_enable(const struct arm_pmu *arm_pmu);
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void brbe_disable(void);
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bool brbe_branch_attr_valid(struct perf_event *event);
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void brbe_read_filtered_entries(struct perf_branch_stack *branch_stack,
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const struct perf_event *event);
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#else
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static inline void brbe_probe(struct arm_pmu *arm_pmu) { }
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static inline unsigned int brbe_num_branch_records(const struct arm_pmu *armpmu)
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{
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return 0;
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}
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static inline void brbe_invalidate(void) { }
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static inline void brbe_enable(const struct arm_pmu *arm_pmu) { };
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static inline void brbe_disable(void) { };
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static inline bool brbe_branch_attr_valid(struct perf_event *event)
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{
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WARN_ON_ONCE(!has_branch_stack(event));
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return false;
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}
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static void brbe_read_filtered_entries(struct perf_branch_stack *branch_stack,
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const struct perf_event *event)
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{
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}
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#endif
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