From e1c13aed4a1641550e8c9518c96f016e1d52d09b Mon Sep 17 00:00:00 2001 From: Yijie Yang Date: Tue, 11 Aug 2026 16:46:47 +0800 Subject: dt-bindings: interconnect: qcom-bwmon: Add Maili cpu-bwmon compatible Add the Qualcomm Maili SoC compatible string for the CPU bandwidth monitor (BWMONv4). This falls back to the sdm845-bwmon compatible, consistent with the existing pattern used by other recent SoCs such as sm8750 and kaanapali. Signed-off-by: Yijie Yang Acked-by: Krzysztof Kozlowski Reviewed-by: Jingyi Wang Link: https://patch.msgid.link/20260811-bwmon-v2-1-80f7f150ab9e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) --- tools/perf/util/unwind.h | 85 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 tools/perf/util/unwind.h (limited to 'tools/perf/util/unwind.h') diff --git a/tools/perf/util/unwind.h b/tools/perf/util/unwind.h new file mode 100644 index 000000000..a2d4af694 --- /dev/null +++ b/tools/perf/util/unwind.h @@ -0,0 +1,85 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __UNWIND_H +#define __UNWIND_H + +#include +#include +#include +#include "map_symbol.h" + +struct maps; +struct option; +struct perf_sample; +struct thread; + +struct unwind_entry { + struct map_symbol ms; + u64 ip; +}; + +typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg); + +int unwind__configure(const char *var, const char *value, void *cb); +int unwind__option(const struct option *opt, const char *arg, int unset); + +/* + * When best_effort is set, don't report errors and fail silently. This could + * be expanded in the future to be more permissive about things other than + * error messages. + */ +int unwind__get_entries(unwind_entry_cb_t cb, void *arg, + struct thread *thread, + struct perf_sample *data, int max_stack, + bool best_effort); + +#ifdef HAVE_LIBDW_SUPPORT +int libdw__get_entries(unwind_entry_cb_t cb, void *arg, + struct thread *thread, + struct perf_sample *data, int max_stack, + bool best_effort); +#else +#include "debug.h" +static inline int libdw__get_entries(unwind_entry_cb_t cb __maybe_unused, void *arg __maybe_unused, + struct thread *thread __maybe_unused, + struct perf_sample *data __maybe_unused, + int max_stack __maybe_unused, + bool best_effort __maybe_unused) +{ + pr_warning_once("Error: libdw dwarf unwinding not built into perf\n"); + return 0; +} +#endif + +#ifdef HAVE_LIBUNWIND_SUPPORT +/* libunwind specific */ +int libunwind__get_entries(unwind_entry_cb_t cb, void *arg, + struct thread *thread, + struct perf_sample *data, int max_stack, + bool best_effort); +int unwind__prepare_access(struct maps *maps, uint16_t e_machine); +void unwind__flush_access(struct maps *maps); +void unwind__finish_access(struct maps *maps); +#else +#include "debug.h" +static inline int libunwind__get_entries(unwind_entry_cb_t cb __maybe_unused, + void *arg __maybe_unused, + struct thread *thread __maybe_unused, + struct perf_sample *data __maybe_unused, + int max_stack __maybe_unused, + bool best_effort __maybe_unused) +{ + pr_warning_once("Error: libunwind dwarf unwinding not built into perf\n"); + return 0; +} + +static inline int unwind__prepare_access(struct maps *maps __maybe_unused, + uint16_t e_machine __maybe_unused) +{ + return 0; +} + +static inline void unwind__flush_access(struct maps *maps __maybe_unused) {} +static inline void unwind__finish_access(struct maps *maps __maybe_unused) {} +#endif + +#endif /* __UNWIND_H */ -- cgit v1.3.1