linux/tools/perf/arch/common.h
Adrian Hunter ec1891afae perf machine: Record if a arch has a single user/kernel address space
Some architectures have a single address space for kernel and user
addresses, which makes it possible to determine if an address is in
kernel space or user space. Some don't, e.g.: sparc.

Cache that info in perf_env so that, for instance, code needing to
fallback failed symbol lookups at the kernel space in single address
space arches can lookup at userspace.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: stable@vger.kernel.org # 4.19
Link: http://lkml.kernel.org/r/20181106210712.12098-2-adrian.hunter@intel.com
[ split from a larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-12-17 14:54:07 -03:00

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C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef ARCH_PERF_COMMON_H
#define ARCH_PERF_COMMON_H
#include "../util/env.h"
int perf_env__lookup_objdump(struct perf_env *env, const char **path);
bool perf_env__single_address_space(struct perf_env *env);
#endif /* ARCH_PERF_COMMON_H */