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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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79b6bb73f8
And pick the shortest name: 'struct maps'. The split existed because we used to have two groups of maps, one for functions and one for variables, but that only complicated things, sometimes we needed to figure out what was at some address and then had to first try it on the functions group and if that failed, fall back to the variables one. That split is long gone, so for quite a while we had only one struct maps per struct map_groups, simplify things by combining those structs. First patch is the minimum needed to merge both, follow up patches will rename 'thread->mg' to 'thread->maps', etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-hom6639ro7020o708trhxh59@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __UNWIND_H
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#define __UNWIND_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include "util/map_symbol.h"
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struct maps;
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struct perf_sample;
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struct thread;
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struct unwind_entry {
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struct map_symbol ms;
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u64 ip;
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};
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typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
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struct unwind_libunwind_ops {
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int (*prepare_access)(struct maps *maps);
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void (*flush_access)(struct maps *maps);
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void (*finish_access)(struct maps *maps);
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int (*get_entries)(unwind_entry_cb_t cb, void *arg,
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struct thread *thread,
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struct perf_sample *data, int max_stack);
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};
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#ifdef HAVE_DWARF_UNWIND_SUPPORT
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int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
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struct thread *thread,
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struct perf_sample *data, int max_stack);
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/* libunwind specific */
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#ifdef HAVE_LIBUNWIND_SUPPORT
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#ifndef LIBUNWIND__ARCH_REG_ID
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#define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum)
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#endif
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#ifndef LIBUNWIND__ARCH_REG_SP
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#define LIBUNWIND__ARCH_REG_SP PERF_REG_SP
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#endif
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#ifndef LIBUNWIND__ARCH_REG_IP
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#define LIBUNWIND__ARCH_REG_IP PERF_REG_IP
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#endif
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int LIBUNWIND__ARCH_REG_ID(int regnum);
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int unwind__prepare_access(struct maps *maps, struct map *map, bool *initialized);
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void unwind__flush_access(struct maps *maps);
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void unwind__finish_access(struct maps *maps);
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#else
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static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
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struct map *map __maybe_unused,
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bool *initialized __maybe_unused)
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{
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return 0;
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}
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static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
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static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
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#endif
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#else
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static inline int
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unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
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void *arg __maybe_unused,
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struct thread *thread __maybe_unused,
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struct perf_sample *data __maybe_unused,
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int max_stack __maybe_unused)
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{
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return 0;
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}
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static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
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struct map *map __maybe_unused,
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bool *initialized __maybe_unused)
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{
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return 0;
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}
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static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
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static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
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#endif /* HAVE_DWARF_UNWIND_SUPPORT */
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#endif /* __UNWIND_H */
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