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Commit 04402d20 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf c2c report: Add llc load miss dimension key 



It is to be displayed in the main cachelines overall output:

  ld_llcmiss

It displays bare number of LLC misses for cacheline.

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-wojujik7zzen770mxn295mxa@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 4d08910c

tools/perf/builtin-c2c.c

+47 −0
Original line number Original line Diff line number Diff line
@@ -421,6 +421,44 @@ STAT_FN(ld_l2hit) 
STAT_FN(ld_llchit)

STAT_FN(ld_llchit)

STAT_FN(rmt_hit)

STAT_FN(rmt_hit)





static uint64_t llc_miss(struct c2c_stats *stats)

{

	uint64_t llcmiss;



	llcmiss = stats->lcl_dram +

		  stats->rmt_dram +

		  stats->rmt_hitm +

		  stats->rmt_hit;



	return llcmiss;

}



static int

ld_llcmiss_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,

		 struct hist_entry *he)

{

	struct c2c_hist_entry *c2c_he;

	int width = c2c_width(fmt, hpp, he->hists);



	c2c_he = container_of(he, struct c2c_hist_entry, he);



	return scnprintf(hpp->buf, hpp->size, "%*lu", width,

			 llc_miss(&c2c_he->stats));

}



static int64_t

ld_llcmiss_cmp(struct perf_hpp_fmt *fmt __maybe_unused,

	       struct hist_entry *left, struct hist_entry *right)

{

	struct c2c_hist_entry *c2c_left;

	struct c2c_hist_entry *c2c_right;



	c2c_left  = container_of(left, struct c2c_hist_entry, he);

	c2c_right = container_of(right, struct c2c_hist_entry, he);



	return llc_miss(&c2c_left->stats) - llc_miss(&c2c_right->stats);

}



#define HEADER_LOW(__h)			\

#define HEADER_LOW(__h)			\

	{				\

	{				\

		.line[1] = {		\

		.line[1] = {		\
@@ -600,6 +638,14 @@ static struct c2c_dimension dim_ld_rmthit = { 
	.width		= 8,

	.width		= 8,

};

};





static struct c2c_dimension dim_ld_llcmiss = {

	.header		= HEADER_BOTH("LLC", "Ld Miss"),

	.name		= "ld_llcmiss",

	.cmp		= ld_llcmiss_cmp,

	.entry		= ld_llcmiss_entry,

	.width		= 7,

};



static struct c2c_dimension *dimensions[] = {

static struct c2c_dimension *dimensions[] = {

	&dim_dcacheline,

	&dim_dcacheline,

	&dim_offset,

	&dim_offset,
@@ -619,6 +665,7 @@ static struct c2c_dimension *dimensions[] = { 
	&dim_ld_l2hit,

	&dim_ld_l2hit,

	&dim_ld_llchit,

	&dim_ld_llchit,

	&dim_ld_rmthit,

	&dim_ld_rmthit,

	&dim_ld_llcmiss,

	NULL,

	NULL,

};

};