perf hists: Separate out hist print functions

Separate out those functions into ui/stdio/hist.c. This is required for
upcoming changes.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1345438331-20234-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 648 insertions, 0 deletions

diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
new file mode 100644
index 000000000000..7881d625e17a
--- /dev/null
+++ b/tools/perf/ui/stdio/hist.c
@@ -0,0 +1,648 @@
+#include <stdio.h>
+#include <math.h>
+
+#include "../../util/util.h"
+#include "../../util/hist.h"
+#include "../../util/sort.h"
+
+
+static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
+{
+        int i;
+        int ret = fprintf(fp, "            ");
+
+        for (i = 0; i < left_margin; i++)
+                ret += fprintf(fp, " ");
+
+        return ret;
+}
+
+static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask,
+                                          int left_margin)
+{
+        int i;
+        size_t ret = callchain__fprintf_left_margin(fp, left_margin);
+
+        for (i = 0; i < depth; i++)
+                if (depth_mask & (1 << i))
+                        ret += fprintf(fp, "|          ");
+                else
+                        ret += fprintf(fp, "           ");
+
+        ret += fprintf(fp, "\n");
+
+        return ret;
+}
+
+static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain,
+                                     int depth, int depth_mask, int period,
+                                     u64 total_samples, u64 hits,
+                                     int left_margin)
+{
+        int i;
+        size_t ret = 0;
+
+        ret += callchain__fprintf_left_margin(fp, left_margin);
+        for (i = 0; i < depth; i++) {
+                if (depth_mask & (1 << i))
+                        ret += fprintf(fp, "|");
+                else
+                        ret += fprintf(fp, " ");
+                if (!period && i == depth - 1) {
+                        double percent;
+
+                        percent = hits * 100.0 / total_samples;
+                        ret += percent_color_fprintf(fp, "--%2.2f%%-- ", percent);
+                } else
+                        ret += fprintf(fp, "%s", "          ");
+        }
+        if (chain->ms.sym)
+                ret += fprintf(fp, "%s\n", chain->ms.sym->name);
+        else
+                ret += fprintf(fp, "0x%0" PRIx64 "\n", chain->ip);
+
+        return ret;
+}
+
+static struct symbol *rem_sq_bracket;
+static struct callchain_list rem_hits;
+
+static void init_rem_hits(void)
+{
+        rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
+        if (!rem_sq_bracket) {
+                fprintf(stderr, "Not enough memory to display remaining hits\n");
+                return;
+        }
+
+        strcpy(rem_sq_bracket->name, "[...]");
+        rem_hits.ms.sym = rem_sq_bracket;
+}
+
+static size_t __callchain__fprintf_graph(FILE *fp, struct rb_root *root,
+                                         u64 total_samples, int depth,
+                                         int depth_mask, int left_margin)
+{
+        struct rb_node *node, *next;
+        struct callchain_node *child;
+        struct callchain_list *chain;
+        int new_depth_mask = depth_mask;
+        u64 remaining;
+        size_t ret = 0;
+        int i;
+        uint entries_printed = 0;
+
+        remaining = total_samples;
+
+        node = rb_first(root);
+        while (node) {
+                u64 new_total;
+                u64 cumul;
+
+                child = rb_entry(node, struct callchain_node, rb_node);
+                cumul = callchain_cumul_hits(child);
+                remaining -= cumul;
+
+                /*
+                 * The depth mask manages the output of pipes that show
+                 * the depth. We don't want to keep the pipes of the current
+                 * level for the last child of this depth.
+                 * Except if we have remaining filtered hits. They will
+                 * supersede the last child
+                 */
+                next = rb_next(node);
+                if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
+                        new_depth_mask &= ~(1 << (depth - 1));
+
+                /*
+                 * But we keep the older depth mask for the line separator
+                 * to keep the level link until we reach the last child
+                 */
+                ret += ipchain__fprintf_graph_line(fp, depth, depth_mask,
+                                                   left_margin);
+                i = 0;
+                list_for_each_entry(chain, &child->val, list) {
+                        ret += ipchain__fprintf_graph(fp, chain, depth,
+                                                      new_depth_mask, i++,
+                                                      total_samples,
+                                                      cumul,
+                                                      left_margin);
+                }
+
+                if (callchain_param.mode == CHAIN_GRAPH_REL)
+                        new_total = child->children_hit;
+                else
+                        new_total = total_samples;
+
+                ret += __callchain__fprintf_graph(fp, &child->rb_root, new_total,
+                                                  depth + 1,
+                                                  new_depth_mask | (1 << depth),
+                                                  left_margin);
+                node = next;
+                if (++entries_printed == callchain_param.print_limit)
+                        break;
+        }
+
+        if (callchain_param.mode == CHAIN_GRAPH_REL &&
+                remaining && remaining != total_samples) {
+
+                if (!rem_sq_bracket)
+                        return ret;
+
+                new_depth_mask &= ~(1 << (depth - 1));
+                ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
+                                              new_depth_mask, 0, total_samples,
+                                              remaining, left_margin);
+        }
+
+        return ret;
+}
+
+static size_t callchain__fprintf_graph(FILE *fp, struct rb_root *root,
+                                       u64 total_samples, int left_margin)
+{
+        struct callchain_node *cnode;
+        struct callchain_list *chain;
+        u32 entries_printed = 0;
+        bool printed = false;
+        struct rb_node *node;
+        int i = 0;
+        int ret = 0;
+
+        /*
+         * If have one single callchain root, don't bother printing
+         * its percentage (100 % in fractal mode and the same percentage
+         * than the hist in graph mode). This also avoid one level of column.
+         */
+        node = rb_first(root);
+        if (node && !rb_next(node)) {
+                cnode = rb_entry(node, struct callchain_node, rb_node);
+                list_for_each_entry(chain, &cnode->val, list) {
+                        /*
+                         * If we sort by symbol, the first entry is the same than
+                         * the symbol. No need to print it otherwise it appears as
+                         * displayed twice.
+                         */
+                        if (!i++ && sort__first_dimension == SORT_SYM)
+                                continue;
+                        if (!printed) {
+                                ret += callchain__fprintf_left_margin(fp, left_margin);
+                                ret += fprintf(fp, "|\n");
+                                ret += callchain__fprintf_left_margin(fp, left_margin);
+                                ret += fprintf(fp, "---");
+                                left_margin += 3;
+                                printed = true;
+                        } else
+                                ret += callchain__fprintf_left_margin(fp, left_margin);
+
+                        if (chain->ms.sym)
+                                ret += fprintf(fp, " %s\n", chain->ms.sym->name);
+                        else
+                                ret += fprintf(fp, " %p\n", (void *)(long)chain->ip);
+
+                        if (++entries_printed == callchain_param.print_limit)
+                                break;
+                }
+                root = &cnode->rb_root;
+        }
+
+        ret += __callchain__fprintf_graph(fp, root, total_samples,
+                                          1, 1, left_margin);
+        ret += fprintf(fp, "\n");
+
+        return ret;
+}
+
+static size_t __callchain__fprintf_flat(FILE *fp,
+                                        struct callchain_node *self,
+                                        u64 total_samples)
+{
+        struct callchain_list *chain;
+        size_t ret = 0;
+
+        if (!self)
+                return 0;
+
+        ret += __callchain__fprintf_flat(fp, self->parent, total_samples);
+
+
+        list_for_each_entry(chain, &self->val, list) {
+                if (chain->ip >= PERF_CONTEXT_MAX)
+                        continue;
+                if (chain->ms.sym)
+                        ret += fprintf(fp, "                %s\n", chain->ms.sym->name);
+                else
+                        ret += fprintf(fp, "                %p\n",
+                                        (void *)(long)chain->ip);
+        }
+
+        return ret;
+}
+
+static size_t callchain__fprintf_flat(FILE *fp, struct rb_root *self,
+                                      u64 total_samples)
+{
+        size_t ret = 0;
+        u32 entries_printed = 0;
+        struct rb_node *rb_node;
+        struct callchain_node *chain;
+
+        rb_node = rb_first(self);
+        while (rb_node) {
+                double percent;
+
+                chain = rb_entry(rb_node, struct callchain_node, rb_node);
+                percent = chain->hit * 100.0 / total_samples;
+
+                ret = percent_color_fprintf(fp, "           %6.2f%%\n", percent);
+                ret += __callchain__fprintf_flat(fp, chain, total_samples);
+                ret += fprintf(fp, "\n");
+                if (++entries_printed == callchain_param.print_limit)
+                        break;
+
+                rb_node = rb_next(rb_node);
+        }
+
+        return ret;
+}
+
+static size_t hist_entry_callchain__fprintf(struct hist_entry *he,
+                                            u64 total_samples, int left_margin,
+                                            FILE *fp)
+{
+        switch (callchain_param.mode) {
+        case CHAIN_GRAPH_REL:
+                return callchain__fprintf_graph(fp, &he->sorted_chain, he->period,
+                                                left_margin);
+                break;
+        case CHAIN_GRAPH_ABS:
+                return callchain__fprintf_graph(fp, &he->sorted_chain, total_samples,
+                                                left_margin);
+                break;
+        case CHAIN_FLAT:
+                return callchain__fprintf_flat(fp, &he->sorted_chain, total_samples);
+                break;
+        case CHAIN_NONE:
+                break;
+        default:
+                pr_err("Bad callchain mode\n");
+        }
+
+        return 0;
+}
+
+static int hist_entry__pcnt_snprintf(struct hist_entry *he, char *s,
+                                     size_t size, struct hists *pair_hists,
+                                     bool show_displacement, long displacement,
+                                     bool color, u64 total_period)
+{
+        u64 period, total, period_sys, period_us, period_guest_sys, period_guest_us;
+        u64 nr_events;
+        const char *sep = symbol_conf.field_sep;
+        int ret;
+
+        if (symbol_conf.exclude_other && !he->parent)
+                return 0;
+
+        if (pair_hists) {
+                period = he->pair ? he->pair->period : 0;
+                nr_events = he->pair ? he->pair->nr_events : 0;
+                total = pair_hists->stats.total_period;
+                period_sys = he->pair ? he->pair->period_sys : 0;
+                period_us = he->pair ? he->pair->period_us : 0;
+                period_guest_sys = he->pair ? he->pair->period_guest_sys : 0;
+                period_guest_us = he->pair ? he->pair->period_guest_us : 0;
+        } else {
+                period = he->period;
+                nr_events = he->nr_events;
+                total = total_period;
+                period_sys = he->period_sys;
+                period_us = he->period_us;
+                period_guest_sys = he->period_guest_sys;
+                period_guest_us = he->period_guest_us;
+        }
+
+        if (total) {
+                if (color)
+                        ret = percent_color_snprintf(s, size,
+                                                     sep ? "%.2f" : "   %6.2f%%",
+                                                     (period * 100.0) / total);
+                else
+                        ret = scnprintf(s, size, sep ? "%.2f" : "   %6.2f%%",
+                                       (period * 100.0) / total);
+                if (symbol_conf.show_cpu_utilization) {
+                        ret += percent_color_snprintf(s + ret, size - ret,
+                                        sep ? "%.2f" : "   %6.2f%%",
+                                        (period_sys * 100.0) / total);
+                        ret += percent_color_snprintf(s + ret, size - ret,
+                                        sep ? "%.2f" : "   %6.2f%%",
+                                        (period_us * 100.0) / total);
+                        if (perf_guest) {
+                                ret += percent_color_snprintf(s + ret,
+                                                size - ret,
+                                                sep ? "%.2f" : "   %6.2f%%",
+                                                (period_guest_sys * 100.0) /
+                                                                total);
+                                ret += percent_color_snprintf(s + ret,
+                                                size - ret,
+                                                sep ? "%.2f" : "   %6.2f%%",
+                                                (period_guest_us * 100.0) /
+                                                                total);
+                        }
+                }
+        } else
+                ret = scnprintf(s, size, sep ? "%" PRIu64 : "%12" PRIu64 " ", period);
+
+        if (symbol_conf.show_nr_samples) {
+                if (sep)
+                        ret += scnprintf(s + ret, size - ret, "%c%" PRIu64, *sep, nr_events);
+                else
+                        ret += scnprintf(s + ret, size - ret, "%11" PRIu64, nr_events);
+        }
+
+        if (symbol_conf.show_total_period) {
+                if (sep)
+                        ret += scnprintf(s + ret, size - ret, "%c%" PRIu64, *sep, period);
+                else
+                        ret += scnprintf(s + ret, size - ret, " %12" PRIu64, period);
+        }
+
+        if (pair_hists) {
+                char bf[32];
+                double old_percent = 0, new_percent = 0, diff;
+
+                if (total > 0)
+                        old_percent = (period * 100.0) / total;
+                if (total_period > 0)
+                        new_percent = (he->period * 100.0) / total_period;
+
+                diff = new_percent - old_percent;
+
+                if (fabs(diff) >= 0.01)
+                        scnprintf(bf, sizeof(bf), "%+4.2F%%", diff);
+                else
+                        scnprintf(bf, sizeof(bf), " ");
+
+                if (sep)
+                        ret += scnprintf(s + ret, size - ret, "%c%s", *sep, bf);
+                else
+                        ret += scnprintf(s + ret, size - ret, "%11.11s", bf);
+
+                if (show_displacement) {
+                        if (displacement)
+                                scnprintf(bf, sizeof(bf), "%+4ld", displacement);
+                        else
+                                scnprintf(bf, sizeof(bf), " ");
+
+                        if (sep)
+                                ret += scnprintf(s + ret, size - ret, "%c%s", *sep, bf);
+                        else
+                                ret += scnprintf(s + ret, size - ret, "%6.6s", bf);
+                }
+        }
+
+        return ret;
+}
+
+int hist_entry__snprintf(struct hist_entry *he, char *s, size_t size,
+                         struct hists *hists)
+{
+        const char *sep = symbol_conf.field_sep;
+        struct sort_entry *se;
+        int ret = 0;
+
+        list_for_each_entry(se, &hist_entry__sort_list, list) {
+                if (se->elide)
+                        continue;
+
+                ret += scnprintf(s + ret, size - ret, "%s", sep ?: "  ");
+                ret += se->se_snprintf(he, s + ret, size - ret,
+                                       hists__col_len(hists, se->se_width_idx));
+        }
+
+        return ret;
+}
+
+static int hist_entry__fprintf(struct hist_entry *he, size_t size,
+                               struct hists *hists, struct hists *pair_hists,
+                               bool show_displacement, long displacement,
+                               u64 total_period, FILE *fp)
+{
+        char bf[512];
+        int ret;
+
+        if (size == 0 || size > sizeof(bf))
+                size = sizeof(bf);
+
+        ret = hist_entry__pcnt_snprintf(he, bf, size, pair_hists,
+                                        show_displacement, displacement,
+                                        true, total_period);
+        hist_entry__snprintf(he, bf + ret, size - ret, hists);
+        return fprintf(fp, "%s\n", bf);
+}
+
+static size_t hist_entry__fprintf_callchain(struct hist_entry *he,
+                                            struct hists *hists,
+                                            u64 total_period, FILE *fp)
+{
+        int left_margin = 0;
+
+        if (sort__first_dimension == SORT_COMM) {
+                struct sort_entry *se = list_first_entry(&hist_entry__sort_list,
+                                                         typeof(*se), list);
+                left_margin = hists__col_len(hists, se->se_width_idx);
+                left_margin -= thread__comm_len(he->thread);
+        }
+
+        return hist_entry_callchain__fprintf(he, total_period, left_margin, fp);
+}
+
+size_t hists__fprintf(struct hists *hists, struct hists *pair,
+                      bool show_displacement, bool show_header, int max_rows,
+                      int max_cols, FILE *fp)
+{
+        struct sort_entry *se;
+        struct rb_node *nd;
+        size_t ret = 0;
+        u64 total_period;
+        unsigned long position = 1;
+        long displacement = 0;
+        unsigned int width;
+        const char *sep = symbol_conf.field_sep;
+        const char *col_width = symbol_conf.col_width_list_str;
+        int nr_rows = 0;
+
+        init_rem_hits();
+
+        if (!show_header)
+                goto print_entries;
+
+        fprintf(fp, "# %s", pair ? "Baseline" : "Overhead");
+
+        if (symbol_conf.show_cpu_utilization) {
+                if (sep) {
+                        ret += fprintf(fp, "%csys", *sep);
+                        ret += fprintf(fp, "%cus", *sep);
+                        if (perf_guest) {
+                                ret += fprintf(fp, "%cguest sys", *sep);
+                                ret += fprintf(fp, "%cguest us", *sep);
+                        }
+                } else {
+                        ret += fprintf(fp, "     sys  ");
+                        ret += fprintf(fp, "      us  ");
+                        if (perf_guest) {
+                                ret += fprintf(fp, "  guest sys  ");
+                                ret += fprintf(fp, "  guest us  ");
+                        }
+                }
+        }
+
+        if (symbol_conf.show_nr_samples) {
+                if (sep)
+                        fprintf(fp, "%cSamples", *sep);
+                else
+                        fputs("  Samples  ", fp);
+        }
+
+        if (symbol_conf.show_total_period) {
+                if (sep)
+                        ret += fprintf(fp, "%cPeriod", *sep);
+                else
+                        ret += fprintf(fp, "   Period    ");
+        }
+
+        if (pair) {
+                if (sep)
+                        ret += fprintf(fp, "%cDelta", *sep);
+                else
+                        ret += fprintf(fp, "  Delta    ");
+
+                if (show_displacement) {
+                        if (sep)
+                                ret += fprintf(fp, "%cDisplacement", *sep);
+                        else
+                                ret += fprintf(fp, " Displ");
+                }
+        }
+
+        list_for_each_entry(se, &hist_entry__sort_list, list) {
+                if (se->elide)
+                        continue;
+                if (sep) {
+                        fprintf(fp, "%c%s", *sep, se->se_header);
+                        continue;
+                }
+                width = strlen(se->se_header);
+                if (symbol_conf.col_width_list_str) {
+                        if (col_width) {
+                                hists__set_col_len(hists, se->se_width_idx,
+                                                   atoi(col_width));
+                                col_width = strchr(col_width, ',');
+                                if (col_width)
+                                        ++col_width;
+                        }
+                }
+                if (!hists__new_col_len(hists, se->se_width_idx, width))
+                        width = hists__col_len(hists, se->se_width_idx);
+                fprintf(fp, "  %*s", width, se->se_header);
+        }
+
+        fprintf(fp, "\n");
+        if (max_rows && ++nr_rows >= max_rows)
+                goto out;
+
+        if (sep)
+                goto print_entries;
+
+        fprintf(fp, "# ........");
+        if (symbol_conf.show_cpu_utilization)
+                fprintf(fp, "   .......   .......");
+        if (symbol_conf.show_nr_samples)
+                fprintf(fp, " ..........");
+        if (symbol_conf.show_total_period)
+                fprintf(fp, " ............");
+        if (pair) {
+                fprintf(fp, " ..........");
+                if (show_displacement)
+                        fprintf(fp, " .....");
+        }
+        list_for_each_entry(se, &hist_entry__sort_list, list) {
+                unsigned int i;
+
+                if (se->elide)
+                        continue;
+
+                fprintf(fp, "  ");
+                width = hists__col_len(hists, se->se_width_idx);
+                if (width == 0)
+                        width = strlen(se->se_header);
+                for (i = 0; i < width; i++)
+                        fprintf(fp, ".");
+        }
+
+        fprintf(fp, "\n");
+        if (max_rows && ++nr_rows >= max_rows)
+                goto out;
+
+        fprintf(fp, "#\n");
+        if (max_rows && ++nr_rows >= max_rows)
+                goto out;
+
+print_entries:
+        total_period = hists->stats.total_period;
+
+        for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
+                struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
+
+                if (h->filtered)
+                        continue;
+
+                if (show_displacement) {
+                        if (h->pair != NULL)
+                                displacement = ((long)h->pair->position -
+                                                (long)position);
+                        else
+                                displacement = 0;
+                        ++position;
+                }
+                ret += hist_entry__fprintf(h, max_cols, hists, pair, show_displacement,
+                                           displacement, total_period, fp);
+
+                if (symbol_conf.use_callchain)
+                        ret += hist_entry__fprintf_callchain(h, hists, total_period, fp);
+                if (max_rows && ++nr_rows >= max_rows)
+                        goto out;
+
+                if (h->ms.map == NULL && verbose > 1) {
+                        __map_groups__fprintf_maps(&h->thread->mg,
+                                                   MAP__FUNCTION, verbose, fp);
+                        fprintf(fp, "%.10s end\n", graph_dotted_line);
+                }
+        }
+out:
+        free(rem_sq_bracket);
+
+        return ret;
+}
+
+size_t hists__fprintf_nr_events(struct hists *hists, FILE *fp)
+{
+        int i;
+        size_t ret = 0;
+
+        for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) {
+                const char *name;
+
+                if (hists->stats.nr_events[i] == 0)
+                        continue;
+
+                name = perf_event__name(i);
+                if (!strcmp(name, "UNKNOWN"))
+                        continue;
+
+                ret += fprintf(fp, "%16s events: %10d\n", name,
+                               hists->stats.nr_events[i]);
+        }
+
+        return ret;
+}