perf hists: Separate overhead and baseline columns

Currently the overhead and baseline columns are handled within single
function and the distinction is made by 'baseline hists' pointer passed
by 'struct perf_hpp::ptr'.

Since hists pointer is now part of each hist_entry, it's possible to
locate paired hists pointer directly from the passed struct hist_entry
pointer.

Also separating those 2 columns makes the code more obvious.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1349354994-17853-4-git-send-email-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 55b9ca8..532a601 100644 (file)
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -8,9 +8,7 @@
 /* hist period print (hpp) functions */
 static int hpp__header_overhead(struct perf_hpp *hpp)
 {
-       const char *fmt = hpp->ptr ? "Baseline" : "Overhead";
-
-       return scnprintf(hpp->buf, hpp->size, fmt);
+       return scnprintf(hpp->buf, hpp->size, "Overhead");
 }
 
 static int hpp__width_overhead(struct perf_hpp *hpp __maybe_unused)
@@ -22,17 +20,6 @@ static int hpp__color_overhead(struct perf_hpp *hpp, struct hist_entry *he)
 {
        double percent = 100.0 * he->period / hpp->total_period;
 
-       if (hpp->ptr) {
-               struct hists *old_hists = hpp->ptr;
-               u64 total_period = old_hists->stats.total_period;
-               u64 base_period = he->pair ? he->pair->period : 0;
-
-               if (total_period)
-                       percent = 100.0 * base_period / total_period;
-               else
-                       percent = 0.0;
-       }
-
        return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%%", percent);
 }
 
@@ -41,17 +28,6 @@ static int hpp__entry_overhead(struct perf_hpp *hpp, struct hist_entry *he)
        double percent = 100.0 * he->period / hpp->total_period;
        const char *fmt = symbol_conf.field_sep ? "%.2f" : " %6.2f%%";
 
-       if (hpp->ptr) {
-               struct hists *old_hists = hpp->ptr;
-               u64 total_period = old_hists->stats.total_period;
-               u64 base_period = he->pair ? he->pair->period : 0;
-
-               if (total_period)
-                       percent = 100.0 * base_period / total_period;
-               else
-                       percent = 0.0;
-       }
-
        return scnprintf(hpp->buf, hpp->size, fmt, percent);
 }
 
@@ -159,6 +135,47 @@ static int hpp__entry_overhead_guest_us(struct perf_hpp *hpp,
        return scnprintf(hpp->buf, hpp->size, fmt, percent);
 }
 
+static int hpp__header_baseline(struct perf_hpp *hpp)
+{
+       return scnprintf(hpp->buf, hpp->size, "Baseline");
+}
+
+static int hpp__width_baseline(struct perf_hpp *hpp __maybe_unused)
+{
+       return 8;
+}
+
+static double baseline_percent(struct hist_entry *he)
+{
+       struct hist_entry *pair = he->pair;
+       struct hists *pair_hists = pair ? pair->hists : NULL;
+       double percent = 0.0;
+
+       if (pair) {
+               u64 total_period = pair_hists->stats.total_period;
+               u64 base_period  = pair->period;
+
+               percent = 100.0 * base_period / total_period;
+       }
+
+       return percent;
+}
+
+static int hpp__color_baseline(struct perf_hpp *hpp, struct hist_entry *he)
+{
+       double percent = baseline_percent(he);
+
+       return percent_color_snprintf(hpp->buf, hpp->size, " %6.2f%%", percent);
+}
+
+static int hpp__entry_baseline(struct perf_hpp *hpp, struct hist_entry *he)
+{
+       double percent = baseline_percent(he);
+       const char *fmt = symbol_conf.field_sep ? "%.2f" : " %6.2f%%";
+
+       return scnprintf(hpp->buf, hpp->size, fmt, percent);
+}
+
 static int hpp__header_samples(struct perf_hpp *hpp)
 {
        const char *fmt = symbol_conf.field_sep ? "%s" : "%11s";
@@ -269,6 +286,7 @@ static int hpp__entry_displ(struct perf_hpp *hpp,
        .entry  = hpp__entry_ ## _name
 
 struct perf_hpp_fmt perf_hpp__format[] = {
+       { .cond = false, HPP__COLOR_PRINT_FNS(baseline) },
        { .cond = true,  HPP__COLOR_PRINT_FNS(overhead) },
        { .cond = false, HPP__COLOR_PRINT_FNS(overhead_sys) },
        { .cond = false, HPP__COLOR_PRINT_FNS(overhead_us) },
@@ -302,6 +320,8 @@ void perf_hpp__init(bool need_pair, bool show_displacement)
                perf_hpp__format[PERF_HPP__PERIOD].cond = true;
 
        if (need_pair) {
+               perf_hpp__format[PERF_HPP__OVERHEAD].cond = false;
+               perf_hpp__format[PERF_HPP__BASELINE].cond = true;
                perf_hpp__format[PERF_HPP__DELTA].cond = true;
 
                if (show_displacement)
@@ -321,6 +341,7 @@ int hist_entry__period_snprintf(struct perf_hpp *hpp, struct hist_entry *he,
        const char *sep = symbol_conf.field_sep;
        char *start = hpp->buf;
        int i, ret;
+       bool first = true;
 
        if (symbol_conf.exclude_other && !he->parent)
                return 0;
@@ -329,9 +350,10 @@ int hist_entry__period_snprintf(struct perf_hpp *hpp, struct hist_entry *he,
                if (!perf_hpp__format[i].cond)
                        continue;
 
-               if (!sep || i > 0) {
+               if (!sep || !first) {
                        ret = scnprintf(hpp->buf, hpp->size, "%s", sep ?: "  ");
                        advance_hpp(hpp, ret);
+                       first = false;
                }
 
                if (color && perf_hpp__format[i].color)

diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index d7405f0..0aa6776 100644 (file)
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -353,6 +353,7 @@ size_t hists__fprintf(struct hists *hists, struct hists *pair,
                .size   = sizeof(bf),
                .ptr    = pair,
        };
+       bool first = true;
 
        init_rem_hits();
 
@@ -364,8 +365,10 @@ size_t hists__fprintf(struct hists *hists, struct hists *pair,
                if (!perf_hpp__format[idx].cond)
                        continue;
 
-               if (idx)
+               if (!first)
                        fprintf(fp, "%s", sep ?: "  ");
+               else
+                       first = false;
 
                perf_hpp__format[idx].header(&dummy_hpp);
                fprintf(fp, "%s", bf);
@@ -400,6 +403,8 @@ size_t hists__fprintf(struct hists *hists, struct hists *pair,
        if (sep)
                goto print_entries;
 
+       first = true;
+
        fprintf(fp, "# ");
        for (idx = 0; idx < PERF_HPP__MAX_INDEX; idx++) {
                unsigned int i;
@@ -407,8 +412,10 @@ size_t hists__fprintf(struct hists *hists, struct hists *pair,
                if (!perf_hpp__format[idx].cond)
                        continue;
 
-               if (idx)
+               if (!first)
                        fprintf(fp, "%s", sep ?: "  ");
+               else
+                       first = false;
 
                width = perf_hpp__format[idx].width(&dummy_hpp);
                for (i = 0; i < width; i++)

diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index efb8fc8..b1a2b9d 100644 (file)
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -133,6 +133,7 @@ struct perf_hpp_fmt {
 extern struct perf_hpp_fmt perf_hpp__format[];
 
 enum {
+       PERF_HPP__BASELINE,
        PERF_HPP__OVERHEAD,
        PERF_HPP__OVERHEAD_SYS,
        PERF_HPP__OVERHEAD_US,