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9a4e47ef98
Every architecture can provide a register list for sampling. If an architecture doesn't support register sampling, it won't define the data structure 'sample_reg_masks'. Consequently, any code using this structure must be protected by the macro 'HAVE_PERF_REGS_SUPPORT'. This patch defines a weak function, arch__sample_reg_masks(), which will be replaced by an architecture-defined function for returning the architecture's register list. With this refactoring, the function always exists, the condition checking for 'HAVE_PERF_REGS_SUPPORT' is not needed anymore, so remove it. Signed-off-by: Leo Yan <leo.yan@linux.dev> Reviewed-by: Ian Rogers <irogers@google.com> Cc: James Clark <james.clark@arm.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Ming Wang <wangming01@loongson.cn> Cc: John Garry <john.g.garry@oracle.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: linux-csky@vger.kernel.org Cc: linux-riscv@lists.infradead.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20240214113947.240957-4-leo.yan@linux.dev
18 lines
441 B
C
18 lines
441 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <inttypes.h>
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#include <stdio.h>
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#include <string.h>
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#include "debug.h"
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#include "symbol.h"
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#include "callchain.h"
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#include "perf_regs.h"
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#include "record.h"
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#include "util/perf_regs.h"
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void arch__add_leaf_frame_record_opts(struct record_opts *opts)
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{
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const struct sample_reg *sample_reg_masks = arch__sample_reg_masks();
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opts->sample_user_regs |= sample_reg_masks[PERF_REG_ARM64_LR].mask;
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}
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