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Subject[tip:perfcounters/core] perf_counter tools: report: Implement header output for --sort variants
Commit-ID:  ca8cdeef9ca2ff89ee8a21d6f6ff3dfb60286041
Gitweb: http://git.kernel.org/tip/ca8cdeef9ca2ff89ee8a21d6f6ff3dfb60286041
Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
AuthorDate: Thu, 28 May 2009 11:08:33 +0200
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 28 May 2009 11:47:02 +0200

perf_counter tools: report: Implement header output for --sort variants

Implement this style of header:

#
# Overhead Command File: Symbol
# ........ ....... ............
#
for the various --sort variants as well.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>


---
Documentation/perf_counter/builtin-report.c | 70 +++++++++++----------------
1 files changed, 28 insertions(+), 42 deletions(-)
diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index 5993c12..506cde4 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -596,8 +596,6 @@ out_delete:

struct thread;

-static const char *thread__name(struct thread *self, char *bf, size_t size);
-
struct thread {
struct rb_node rb_node;
struct list_head maps;
@@ -605,15 +603,6 @@ struct thread {
char *comm;
};

-static const char *thread__name(struct thread *self, char *bf, size_t size)
-{
- if (self->comm)
- return self->comm;
-
- snprintf(bf, sizeof(bf), ":%u", self->pid);
- return bf;
-}
-
static struct thread *thread__new(pid_t pid)
{
struct thread *self = malloc(sizeof(*self));
@@ -707,8 +696,9 @@ struct hist_entry {
struct sort_entry {
struct list_head list;

+ char *header;
+
int64_t (*cmp)(struct hist_entry *, struct hist_entry *);
- size_t (*print_header)(FILE *fp);
size_t (*print)(FILE *fp, struct hist_entry *);
};

@@ -721,13 +711,11 @@ sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
static size_t
sort__thread_print(FILE *fp, struct hist_entry *self)
{
- char bf[32];
-
- return fprintf(fp, " %16s",
- thread__name(self->thread, bf, sizeof(bf)));
+ return fprintf(fp, " %16s:%5d", self->thread->comm ?: "", self->thread->pid);
}

static struct sort_entry sort_thread = {
+ .header = " Command: Pid ",
.cmp = sort__thread_cmp,
.print = sort__thread_print,
};
@@ -757,6 +745,7 @@ sort__comm_print(FILE *fp, struct hist_entry *self)
}

static struct sort_entry sort_comm = {
+ .header = " Command",
.cmp = sort__comm_cmp,
.print = sort__comm_print,
};
@@ -786,6 +775,7 @@ sort__dso_print(FILE *fp, struct hist_entry *self)
}

static struct sort_entry sort_dso = {
+ .header = " Shared Object",
.cmp = sort__dso_cmp,
.print = sort__dso_print,
};
@@ -804,43 +794,25 @@ sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
return (int64_t)(ip_r - ip_l);
}

-static size_t sort__sym_print_header(FILE *fp)
-{
- size_t ret = 0;
-
- ret += fprintf(fp, "#\n");
- ret += fprintf(fp, "# Overhead Command File: Symbol\n");
- ret += fprintf(fp, "# ........ ....... ............\n");
- ret += fprintf(fp, "#\n");
-
- return ret;
-}
-
static size_t
sort__sym_print(FILE *fp, struct hist_entry *self)
{
size_t ret = 0;

- ret += fprintf(fp, " [%c] ", self->level);
-
if (verbose)
ret += fprintf(fp, " %#018llx", (unsigned long long)self->ip);

- if (self->level != '.')
- ret += fprintf(fp, " kernel: %s",
- self->sym ? self->sym->name : "<unknown>");
- else
- ret += fprintf(fp, " %s: %s",
- self->dso ? self->dso->name : "<unknown>",
- self->sym ? self->sym->name : "<unknown>");
+ ret += fprintf(fp, " %s: %s",
+ self->dso ? self->dso->name : "<unknown>",
+ self->sym ? self->sym->name : "<unknown>");

return ret;
}

static struct sort_entry sort_sym = {
- .cmp = sort__sym_cmp,
- .print_header = sort__sym_print_header,
- .print = sort__sym_print,
+ .header = "Shared Object: Symbol",
+ .cmp = sort__sym_cmp,
+ .print = sort__sym_print,
};

struct sort_dimension {
@@ -1021,10 +993,24 @@ static size_t output__fprintf(FILE *fp, uint64_t total_samples)
struct rb_node *nd;
size_t ret = 0;

+ fprintf(fp, "#\n");
+
+ fprintf(fp, "# Overhead");
+ list_for_each_entry(se, &hist_entry__sort_list, list)
+ fprintf(fp, " %s", se->header);
+ fprintf(fp, "\n");
+
+ fprintf(fp, "# ........");
list_for_each_entry(se, &hist_entry__sort_list, list) {
- if (se->print_header)
- ret += se->print_header(fp);
+ int i;
+
+ fprintf(fp, " ");
+ for (i = 0; i < strlen(se->header); i++)
+ fprintf(fp, ".");
}
+ fprintf(fp, "\n");
+
+ fprintf(fp, "#\n");

for (nd = rb_first(&output_hists); nd; nd = rb_next(nd)) {
pos = rb_entry(nd, struct hist_entry, rb_node);

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