Re: [PATCH v1 2/2] perf annotate: Create hotkey 'c' to show max/min cycles

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Em Thu, May 17, 2018 at 10:58:38PM +0800, Jin Yao escreveu:
> In perf annotate view, a new hotkey 'c' is created for
> showing the max/min cycles.

I just changed everything from "max/min" to "min/max", as it looked
strange print the max first, thanks, applying.

- Arnaldo
 
> For example, when press 'c', the annotate view is:
> 
> Percent│ IPC     Cycle(max/min)
>        │
>        │
>        │                             Disassembly of section .text:
>        │
>        │                             000000000003aab0 <random@@GLIBC_2.2.5>:
>   8.22 │3.92                           sub    $0x18,%rsp
>        │3.92                           mov    $0x1,%esi
>        │3.92                           xor    %eax,%eax
>        │3.92                           cmpl   $0x0,argp_program_version_hook@@G
>        │3.92             1(2/1)      ↓ je     20
>        │                               lock   cmpxchg %esi,__abort_msg@@GLIBC_P
>        │                             ↓ jne    29
>        │                             ↓ jmp    43
>        │1.10                     20:   cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+
>   8.93 │1.10             1(5/1)      ↓ je     43
> 
> When press 'c' again, the annotate view is switched back:
> 
> Percent│ IPC Cycle
>        │
>        │
>        │                Disassembly of section .text:
>        │
>        │                000000000003aab0 <random@@GLIBC_2.2.5>:
>   8.22 │3.92              sub    $0x18,%rsp
>        │3.92              mov    $0x1,%esi
>        │3.92              xor    %eax,%eax
>        │3.92              cmpl   $0x0,argp_program_version_hook@@GLIBC_2.2.5+0x
>        │3.92     1      ↓ je     20
>        │                  lock   cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+0x8a0
>        │                ↓ jne    29
>        │                ↓ jmp    43
>        │1.10        20:   cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+0x8a0
>   8.93 │1.10     1      ↓ je     43
> 
> Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
> ---
>  tools/perf/ui/browsers/annotate.c |  8 ++++++++
>  tools/perf/util/annotate.c        | 37 +++++++++++++++++++++++++++++++------
>  tools/perf/util/annotate.h        |  7 ++++++-
>  3 files changed, 45 insertions(+), 7 deletions(-)
> 
> diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
> index 3781d74..f202a3f 100644
> --- a/tools/perf/ui/browsers/annotate.c
> +++ b/tools/perf/ui/browsers/annotate.c
> @@ -695,6 +695,7 @@ static int annotate_browser__run(struct annotate_browser *browser,
>  		"O             Bump offset level (jump targets -> +call -> all -> cycle thru)\n"
>  		"s             Toggle source code view\n"
>  		"t             Circulate percent, total period, samples view\n"
> +		"c             Show max/min cycle\n"
>  		"/             Search string\n"
>  		"k             Toggle line numbers\n"
>  		"P             Print to [symbol_name].annotation file.\n"
> @@ -791,6 +792,13 @@ static int annotate_browser__run(struct annotate_browser *browser,
>  				notes->options->show_total_period = true;
>  			annotation__update_column_widths(notes);
>  			continue;
> +		case 'c':
> +			if (notes->options->show_maxmin_cycle)
> +				notes->options->show_maxmin_cycle = false;
> +			else
> +				notes->options->show_maxmin_cycle = true;
> +			annotation__update_column_widths(notes);
> +			continue;
>  		case K_LEFT:
>  		case K_ESC:
>  		case 'q':
> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
> index 934a172..17fff6f 100644
> --- a/tools/perf/util/annotate.c
> +++ b/tools/perf/util/annotate.c
> @@ -2495,13 +2495,38 @@ static void __annotation_line__write(struct annotation_line *al, struct annotati
>  		else
>  			obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC");
>  
> -		if (al->cycles)
> -			obj__printf(obj, "%*" PRIu64 " ",
> +		if (!notes->options->show_maxmin_cycle) {
> +			if (al->cycles)
> +				obj__printf(obj, "%*" PRIu64 " ",
>  					   ANNOTATION__CYCLES_WIDTH - 1, al->cycles);
> -		else if (!show_title)
> -			obj__printf(obj, "%*s", ANNOTATION__CYCLES_WIDTH, " ");
> -		else
> -			obj__printf(obj, "%*s ", ANNOTATION__CYCLES_WIDTH - 1, "Cycle");
> +			else if (!show_title)
> +				obj__printf(obj, "%*s",
> +					    ANNOTATION__CYCLES_WIDTH, " ");
> +			else
> +				obj__printf(obj, "%*s ",
> +					    ANNOTATION__CYCLES_WIDTH - 1,
> +					    "Cycle");
> +		} else {
> +			if (al->cycles) {
> +				char str[32];
> +
> +				scnprintf(str, sizeof(str),
> +					"%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")",
> +					al->cycles, al->cycles_max,
> +					al->cycles_min);
> +
> +				obj__printf(obj, "%*s ",
> +					    ANNOTATION__MAXMIN_CYCLES_WIDTH - 1,
> +					    str);
> +			} else if (!show_title)
> +				obj__printf(obj, "%*s",
> +					    ANNOTATION__MAXMIN_CYCLES_WIDTH,
> +					    " ");
> +			else
> +				obj__printf(obj, "%*s ",
> +					    ANNOTATION__MAXMIN_CYCLES_WIDTH - 1,
> +					    "Cycle(max/min)");
> +		}
>  	}
>  
>  	obj__printf(obj, " ");
> diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
> index d50363d..4cafd63 100644
> --- a/tools/perf/util/annotate.h
> +++ b/tools/perf/util/annotate.h
> @@ -61,6 +61,7 @@ bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2);
>  
>  #define ANNOTATION__IPC_WIDTH 6
>  #define ANNOTATION__CYCLES_WIDTH 6
> +#define ANNOTATION__MAXMIN_CYCLES_WIDTH 19
>  
>  struct annotation_options {
>  	bool hide_src_code,
> @@ -69,7 +70,8 @@ struct annotation_options {
>  	     show_linenr,
>  	     show_nr_jumps,
>  	     show_nr_samples,
> -	     show_total_period;
> +	     show_total_period,
> +	     show_maxmin_cycle;
>  	u8   offset_level;
>  };
>  
> @@ -243,6 +245,9 @@ struct annotation {
>  
>  static inline int annotation__cycles_width(struct annotation *notes)
>  {
> +	if (notes->have_cycles && notes->options->show_maxmin_cycle)
> +		return ANNOTATION__IPC_WIDTH + ANNOTATION__MAXMIN_CYCLES_WIDTH;
> +
>  	return notes->have_cycles ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0;
>  }
>  
> -- 
> 2.7.4