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Ian RogersandArnaldo Carvalho de Melo
165daffc7c
Code in tools/perf/arch causes portability issues/opaqueness and LTO issues due to the use of weak symbols. Move the adding of LR to the sample_user_regs into arm64-frame-pointer-unwind-support.c conditional on EM_HOST == EM_AARCH64 (false on all non-ARM64 builds). This also better encapsulates the use of the sampled registers by get_leaf_frame_caller_aarch64 and the set up by the new add_leaf_frame_caller_opts_aarch64, exposing opportunities for possibly sampling PC and SP to help the unwinder. Reviewed-by: James Clark <james.clark@linaro.org> Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Dapeng Mi <dapeng1.mi@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Leo Yan <leo.yan@linux.dev> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shimin Guo <shimin.guo@skydio.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
15 lines
445 B
C
15 lines
445 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_ARM_FRAME_POINTER_UNWIND_SUPPORT_H
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#define __PERF_ARM_FRAME_POINTER_UNWIND_SUPPORT_H
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#include <linux/types.h>
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struct perf_sample;
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struct record_opts;
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struct thread;
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void add_leaf_frame_caller_opts_aarch64(struct record_opts *opts);
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u64 get_leaf_frame_caller_aarch64(struct perf_sample *sample, struct thread *thread, int user_idx);
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#endif /* __PERF_ARM_FRAME_POINTER_UNWIND_SUPPORT_H */
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