From bb3b2cfeb206f5b10b859e134651b54120e3f530 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 30 Jun 2026 18:05:56 +0100 Subject: ARM: 9480/1: entry: expand comment in __switch_to As per discussion between the developers in the mail thread linked, expand the comment in __switch_to so that readers of the code understand what is going on. Suggested-by: Mark Rutland Acked-by: Mark Rutland Signed-off-by: Linus Walleij > Signed-off-by: Russell King --- tools/perf/util/debuginfo.h | 66 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 tools/perf/util/debuginfo.h (limited to 'tools/perf/util/debuginfo.h') diff --git a/tools/perf/util/debuginfo.h b/tools/perf/util/debuginfo.h new file mode 100644 index 000000000..a52d69932 --- /dev/null +++ b/tools/perf/util/debuginfo.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _PERF_DEBUGINFO_H +#define _PERF_DEBUGINFO_H + +#include +#include + +#ifdef HAVE_LIBDW_SUPPORT + +#include "dwarf-aux.h" + +/* debug information structure */ +struct debuginfo { + Dwarf *dbg; + Dwfl_Module *mod; + Dwfl *dwfl; + Dwarf_Addr bias; + const unsigned char *build_id; +}; + +/* This also tries to open distro debuginfo */ +struct debuginfo *debuginfo__new(const char *path); +void debuginfo__delete(struct debuginfo *dbg); + +int debuginfo__get_text_offset(struct debuginfo *dbg, Dwarf_Addr *offs, + bool adjust_offset); + +#else /* HAVE_LIBDW_SUPPORT */ + +/* dummy debug information structure */ +struct debuginfo { +}; + +static inline struct debuginfo *debuginfo__new(const char *path __maybe_unused) +{ + return NULL; +} + +static inline void debuginfo__delete(struct debuginfo *dbg __maybe_unused) +{ +} + +typedef void Dwarf_Addr; + +static inline int debuginfo__get_text_offset(struct debuginfo *dbg __maybe_unused, + Dwarf_Addr *offs __maybe_unused, + bool adjust_offset __maybe_unused) +{ + return -EINVAL; +} + +#endif /* HAVE_LIBDW_SUPPORT */ + +#ifdef HAVE_DEBUGINFOD_SUPPORT +int get_source_from_debuginfod(const char *raw_path, const char *sbuild_id, + char **new_path); +#else /* HAVE_DEBUGINFOD_SUPPORT */ +static inline int get_source_from_debuginfod(const char *raw_path __maybe_unused, + const char *sbuild_id __maybe_unused, + char **new_path __maybe_unused) +{ + return -ENOTSUP; +} +#endif /* HAVE_DEBUGINFOD_SUPPORT */ + +#endif /* _PERF_DEBUGINFO_H */ -- cgit v1.3.1