[PATCH] ARC: introduce basic 'perf annotate' support for ARC

[acme@kernel.org (Arnaldo Carvalho de Melo)]

Em Tue, Dec 04, 2018 at 08:51:18PM +0300, Eugeniy Paltsev escreveu:
> Introduce basic 'perf annotate' support for ARC to be able
> to use anotation via stdio interface.

Would be nice to show the output of a 'perf annotate --stdio2' for a
perf.data file recorded on ARC :-)

- Arnaldo
 
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev at synopsys.com>
> ---
>  tools/perf/arch/arc/annotate/instructions.c |  9 +++++++++
>  tools/perf/arch/common.c                    | 11 ++++++++++-
>  tools/perf/util/annotate.c                  |  5 +++++
>  3 files changed, 24 insertions(+), 1 deletion(-)
>  create mode 100644 tools/perf/arch/arc/annotate/instructions.c
> 
> diff --git a/tools/perf/arch/arc/annotate/instructions.c b/tools/perf/arch/arc/annotate/instructions.c
> new file mode 100644
> index 000000000000..2f00e995c7e3
> --- /dev/null
> +++ b/tools/perf/arch/arc/annotate/instructions.c
> @@ -0,0 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> +#include <linux/compiler.h>
> +
> +static int arc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
> +{
> +	arch->initialized = true;
> +	arch->objdump.comment_char = ';';
> +	return 0;
> +}
> diff --git a/tools/perf/arch/common.c b/tools/perf/arch/common.c
> index 82657c01a3b8..f7cb57c424d1 100644
> --- a/tools/perf/arch/common.c
> +++ b/tools/perf/arch/common.c
> @@ -5,6 +5,13 @@
>  #include "../util/util.h"
>  #include "../util/debug.h"
>  
> +const char *const arc_triplets[] = {
> +	"arc-linux-",
> +	"arc-snps-linux-uclibc-",
> +	"arc-snps-linux-gnu-",
> +	NULL
> +};
> +
>  const char *const arm_triplets[] = {
>  	"arm-eabi-",
>  	"arm-linux-androideabi-",
> @@ -147,7 +154,9 @@ static int perf_env__lookup_binutils_path(struct perf_env *env,
>  		zfree(&buf);
>  	}
>  
> -	if (!strcmp(arch, "arm"))
> +	if (!strcmp(arch, "arc"))
> +		path_list = arc_triplets;
> +	else if (!strcmp(arch, "arm"))
>  		path_list = arm_triplets;
>  	else if (!strcmp(arch, "arm64"))
>  		path_list = arm64_triplets;
> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
> index 6936daf89ddd..66066fb4d644 100644
> --- a/tools/perf/util/annotate.c
> +++ b/tools/perf/util/annotate.c
> @@ -134,6 +134,7 @@ static int arch__associate_ins_ops(struct arch* arch, const char *name, struct i
>  	return 0;
>  }
>  
> +#include "arch/arc/annotate/instructions.c"
>  #include "arch/arm/annotate/instructions.c"
>  #include "arch/arm64/annotate/instructions.c"
>  #include "arch/x86/annotate/instructions.c"
> @@ -142,6 +143,10 @@ static int arch__associate_ins_ops(struct arch* arch, const char *name, struct i
>  #include "arch/sparc/annotate/instructions.c"
>  
>  static struct arch architectures[] = {
> +	{
> +		.name = "arc",
> +		.init = arc__annotate_init,
> +	},
>  	{
>  		.name = "arm",
>  		.init = arm__annotate_init,
> -- 
> 2.14.5

-- 

- Arnaldo