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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
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_REGS_H
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#define __PERF_REGS_H
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#include <linux/types.h>
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#include <linux/compiler.h>
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struct regs_dump;
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struct sample_reg {
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const char *name;
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uint64_t mask;
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};
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#define SMPL_REG_MASK(b) (1ULL << (b))
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#define SMPL_REG(n, b) { .name = #n, .mask = SMPL_REG_MASK(b) }
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#define SMPL_REG2_MASK(b) (3ULL << (b))
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#define SMPL_REG2(n, b) { .name = #n, .mask = SMPL_REG2_MASK(b) }
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#define SMPL_REG_END { .name = NULL }
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enum {
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SDT_ARG_VALID = 0,
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SDT_ARG_SKIP,
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};
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int arch_sdt_arg_parse_op(char *old_op, char **new_op);
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uint64_t arch__intr_reg_mask(void);
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uint64_t arch__user_reg_mask(void);
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const struct sample_reg *arch__sample_reg_masks(void);
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const char *perf_reg_name(int id, const char *arch);
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int perf_reg_value(u64 *valp, struct regs_dump *regs, int id);
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uint64_t perf_arch_reg_ip(const char *arch);
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uint64_t perf_arch_reg_sp(const char *arch);
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const char *__perf_reg_name_arm64(int id);
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uint64_t __perf_reg_ip_arm64(void);
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uint64_t __perf_reg_sp_arm64(void);
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const char *__perf_reg_name_arm(int id);
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uint64_t __perf_reg_ip_arm(void);
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uint64_t __perf_reg_sp_arm(void);
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const char *__perf_reg_name_csky(int id);
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uint64_t __perf_reg_ip_csky(void);
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uint64_t __perf_reg_sp_csky(void);
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const char *__perf_reg_name_loongarch(int id);
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uint64_t __perf_reg_ip_loongarch(void);
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uint64_t __perf_reg_sp_loongarch(void);
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const char *__perf_reg_name_mips(int id);
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uint64_t __perf_reg_ip_mips(void);
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uint64_t __perf_reg_sp_mips(void);
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const char *__perf_reg_name_powerpc(int id);
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uint64_t __perf_reg_ip_powerpc(void);
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uint64_t __perf_reg_sp_powerpc(void);
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const char *__perf_reg_name_riscv(int id);
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uint64_t __perf_reg_ip_riscv(void);
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uint64_t __perf_reg_sp_riscv(void);
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const char *__perf_reg_name_s390(int id);
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uint64_t __perf_reg_ip_s390(void);
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uint64_t __perf_reg_sp_s390(void);
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const char *__perf_reg_name_x86(int id);
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uint64_t __perf_reg_ip_x86(void);
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uint64_t __perf_reg_sp_x86(void);
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static inline uint64_t DWARF_MINIMAL_REGS(const char *arch)
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{
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return (1ULL << perf_arch_reg_ip(arch)) | (1ULL << perf_arch_reg_sp(arch));
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}
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#endif /* __PERF_REGS_H */
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