37676af15c
It was affecting only frame-pointer (fp) based callchain processing. Usage example: perf top --call-graph dwarf,1024 --max-stack 2 Works for any tool that does callchain resolving and provides a --max-stack option. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Waiman Long <Waiman.Long@hp.com> Link: http://lkml.kernel.org/n/tip-eu45v8s3tq9ruay8tpfyon79@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
36 lines
891 B
C
36 lines
891 B
C
#ifndef __UNWIND_H
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#define __UNWIND_H
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#include "types.h"
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#include "event.h"
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#include "symbol.h"
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struct unwind_entry {
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struct map *map;
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struct symbol *sym;
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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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#ifdef HAVE_LIBUNWIND_SUPPORT
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int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
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struct machine *machine,
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struct thread *thread,
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u64 sample_uregs,
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struct perf_sample *data, int max_stack);
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int unwind__arch_reg_id(int regnum);
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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 machine *machine __maybe_unused,
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struct thread *thread __maybe_unused,
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u64 sample_uregs __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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#endif /* HAVE_LIBUNWIND_SUPPORT */
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#endif /* __UNWIND_H */
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