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tools: Adopt __packed from kernel sources

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To have a more compact way to ask the compiler to not insert alignment
paddings in a struct, making tools/ look more like kernel source code.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-byp46nr7hsxvvyc9oupfb40q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2017-06-16 11:39:15 -03:00
parent 9dd4ca470e
commit c9f5da742f
2 changed files with 5 additions and 2 deletions
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2
tools/include/linux/compiler-gcc.h
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@ -22,6 +22,8 @@
#define noinline __attribute__((noinline))
#define __packed __attribute__((packed))
#define __noreturn __attribute__((noreturn))
#define __printf(a, b) __attribute__((format(printf, a, b)))

5
tools/perf/util/genelf_debug.c
View File

@ -11,6 +11,7 @@
* @remark Copyright 2007 OProfile authors
* @author Philippe Elie
*/
#include <linux/compiler.h>
#include <sys/types.h>
#include <stdio.h>
#include <getopt.h>
@ -125,7 +126,7 @@ struct debug_line_header {
* and filesize, last entry is followed by en empty string.
*/
/* follow the first program statement */
} __attribute__((packed));
} __packed;
/* DWARF 2 spec talk only about one possible compilation unit header while
* binutils can handle two flavours of dwarf 2, 32 and 64 bits, this is not
@ -138,7 +139,7 @@ struct compilation_unit_header {
uhalf version;
uword debug_abbrev_offset;
ubyte pointer_size;
} __attribute__((packed));
} __packed;
#define DW_LNS_num_opcode (DW_LNS_set_isa + 1)