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Commit b8ab9220 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge tag 'perf-core-for-mingo-20160607' of... 

Merge tag 'perf-core-for-mingo-20160607' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

User visible changes:

- Support cross unwinding, i.e. collecting '--call-graph dwarf' perf.data files
  in one machine and then doing analysis in another machine of a different
  hardware architecture. This enables, for instance, to do:

	perf record -a --call-graph dwarf

  on a x86-32 or aarch64 system and then do 'perf report' on it on a
  x86_64 workstation. (He Kuang)

- Fix crash in build_id_cache__kallsyms_path(), recent regression (Wang Nan)

Infrastructure changes:

- Make tools/lib/bpf use the IS_ERR return facility consistently and also stop
  using the _get_ term for non-reference count methods (Arnaldo Carvalho de Melo)

- 'perf config' refactorings (Taeung Song)

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents aa3a655b 057fbfb2

tools/lib/bpf/libbpf.c

+19 −41
Original line number Diff line number Diff line
@@ -1186,20 +1186,14 @@ bpf_object__next(struct bpf_object *prev) 
	return next;

}



const char *

bpf_object__get_name(struct bpf_object *obj)

const char *bpf_object__name(struct bpf_object *obj)

{

	if (!obj)

		return ERR_PTR(-EINVAL);

	return obj->path;

	return obj ? obj->path : ERR_PTR(-EINVAL);

}



unsigned int

bpf_object__get_kversion(struct bpf_object *obj)

unsigned int bpf_object__kversion(struct bpf_object *obj)

{

	if (!obj)

		return 0;

	return obj->kern_version;

	return obj ? obj->kern_version : 0;

}



struct bpf_program *
@@ -1224,8 +1218,7 @@ bpf_program__next(struct bpf_program *prev, struct bpf_object *obj) 
	return &obj->programs[idx];

}



int bpf_program__set_private(struct bpf_program *prog,

			     void *priv,

int bpf_program__set_priv(struct bpf_program *prog, void *priv,

			  bpf_program_clear_priv_t clear_priv)

{

	if (prog->priv && prog->clear_priv)
@@ -1236,10 +1229,9 @@ int bpf_program__set_private(struct bpf_program *prog, 
	return 0;

}



int bpf_program__get_private(struct bpf_program *prog, void **ppriv)

void *bpf_program__priv(struct bpf_program *prog)

{

	*ppriv = prog->priv;

	return 0;

	return prog ? prog->priv : ERR_PTR(-EINVAL);

}



const char *bpf_program__title(struct bpf_program *prog, bool needs_copy)
@@ -1311,31 +1303,22 @@ int bpf_program__nth_fd(struct bpf_program *prog, int n) 
	return fd;

}



int bpf_map__get_fd(struct bpf_map *map)

int bpf_map__fd(struct bpf_map *map)

{

	if (!map)

		return -EINVAL;



	return map->fd;

	return map ? map->fd : -EINVAL;

}



int bpf_map__get_def(struct bpf_map *map, struct bpf_map_def *pdef)

const struct bpf_map_def *bpf_map__def(struct bpf_map *map)

{

	if (!map || !pdef)

		return -EINVAL;



	*pdef = map->def;

	return 0;

	return map ? &map->def : ERR_PTR(-EINVAL);

}



const char *bpf_map__get_name(struct bpf_map *map)

const char *bpf_map__name(struct bpf_map *map)

{

	if (!map)

		return NULL;

	return map->name;

	return map ? map->name : NULL;

}



int bpf_map__set_private(struct bpf_map *map, void *priv,

int bpf_map__set_priv(struct bpf_map *map, void *priv,

		     bpf_map_clear_priv_t clear_priv)

{

	if (!map)
@@ -1351,14 +1334,9 @@ int bpf_map__set_private(struct bpf_map *map, void *priv, 
	return 0;

}



int bpf_map__get_private(struct bpf_map *map, void **ppriv)

void *bpf_map__priv(struct bpf_map *map)

{

	if (!map)

		return -EINVAL;



	if (ppriv)

		*ppriv = map->priv;

	return 0;

	return map ? map->priv : ERR_PTR(-EINVAL);

}



struct bpf_map *
@@ -1389,7 +1367,7 @@ bpf_map__next(struct bpf_map *prev, struct bpf_object *obj) 
}



struct bpf_map *

bpf_object__get_map_by_name(struct bpf_object *obj, const char *name)

bpf_object__find_map_by_name(struct bpf_object *obj, const char *name)

{

	struct bpf_map *pos;

tools/lib/bpf/libbpf.h

+12 −13
Original line number Diff line number Diff line
@@ -55,8 +55,8 @@ void bpf_object__close(struct bpf_object *object); 
/* Load/unload object into/from kernel */

int bpf_object__load(struct bpf_object *obj);

int bpf_object__unload(struct bpf_object *obj);

const char *bpf_object__get_name(struct bpf_object *obj);

unsigned int bpf_object__get_kversion(struct bpf_object *obj);

const char *bpf_object__name(struct bpf_object *obj);

unsigned int bpf_object__kversion(struct bpf_object *obj);



struct bpf_object *bpf_object__next(struct bpf_object *prev);

#define bpf_object__for_each_safe(pos, tmp)			\
@@ -78,11 +78,10 @@ struct bpf_program *bpf_program__next(struct bpf_program *prog, 
typedef void (*bpf_program_clear_priv_t)(struct bpf_program *,

					 void *);



int bpf_program__set_private(struct bpf_program *prog, void *priv,

int bpf_program__set_priv(struct bpf_program *prog, void *priv,

			  bpf_program_clear_priv_t clear_priv);



int bpf_program__get_private(struct bpf_program *prog,

			     void **ppriv);

void *bpf_program__priv(struct bpf_program *prog);



const char *bpf_program__title(struct bpf_program *prog, bool needs_copy);
@@ -171,7 +170,7 @@ struct bpf_map_def { 
 */

struct bpf_map;

struct bpf_map *

bpf_object__get_map_by_name(struct bpf_object *obj, const char *name);

bpf_object__find_map_by_name(struct bpf_object *obj, const char *name);



struct bpf_map *

bpf_map__next(struct bpf_map *map, struct bpf_object *obj);
@@ -180,13 +179,13 @@ bpf_map__next(struct bpf_map *map, struct bpf_object *obj); 
	     (pos) != NULL;				\

	     (pos) = bpf_map__next((pos), (obj)))



int bpf_map__get_fd(struct bpf_map *map);

int bpf_map__get_def(struct bpf_map *map, struct bpf_map_def *pdef);

const char *bpf_map__get_name(struct bpf_map *map);

int bpf_map__fd(struct bpf_map *map);

const struct bpf_map_def *bpf_map__def(struct bpf_map *map);

const char *bpf_map__name(struct bpf_map *map);



typedef void (*bpf_map_clear_priv_t)(struct bpf_map *, void *);

int bpf_map__set_private(struct bpf_map *map, void *priv,

int bpf_map__set_priv(struct bpf_map *map, void *priv,

		      bpf_map_clear_priv_t clear_priv);

int bpf_map__get_private(struct bpf_map *map, void **ppriv);

void *bpf_map__priv(struct bpf_map *map);



#endif

tools/perf/arch/arm/util/Build

+1 −1
Original line number Diff line number Diff line 
libperf-$(CONFIG_DWARF) += dwarf-regs.o



libperf-$(CONFIG_LIBUNWIND)          += unwind-libunwind.o

libperf-$(CONFIG_LOCAL_LIBUNWIND)    += unwind-libunwind.o

libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o

tools/perf/arch/arm64/util/Build

+1 −1
Original line number Diff line number Diff line 
libperf-$(CONFIG_DWARF)     += dwarf-regs.o

libperf-$(CONFIG_LIBUNWIND) += unwind-libunwind.o
 
libperf-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o

tools/perf/arch/arm64/util/unwind-libunwind.c

+3 −1
Original line number Diff line number Diff line 


#ifndef REMOTE_UNWIND_LIBUNWIND

#include <errno.h>

#include <libunwind.h>

#include "perf_regs.h"

#include "../../util/unwind.h"

#include "../../util/debug.h"

#endif



int libunwind__arch_reg_id(int regnum)

int LIBUNWIND__ARCH_REG_ID(int regnum)

{

	switch (regnum) {

	case UNW_AARCH64_X0: