From 9d1ef56d571671097f54a5ec31a9b1fb7dc819ed Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 27 Apr 2012 16:35:29 -0300 Subject: [PATCH] perf annotate browser: Show current jump, back or forward Instead of trying to show the current loop by naively looking for the next backward jump, just use 'j' to toggle showing arrows connecting jump with its target. And do it for forward jumps as well. Loop detection requires more code to follow the flow control, etc. Reported-by: Linus Torvalds Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-soahcn1lz2u4wxj31ch0594j@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/annotate.c | 50 ++++++++++++++----------------- 1 file changed, 23 insertions(+), 27 deletions(-) diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c index 4778172683b..d203dafedea 100644 --- a/tools/perf/ui/browsers/annotate.c +++ b/tools/perf/ui/browsers/annotate.c @@ -30,6 +30,7 @@ struct annotate_browser { int nr_entries; bool hide_src_code; bool use_offset; + bool jump_arrows; bool searching_backwards; u8 offset_width; char search_bf[128]; @@ -144,56 +145,47 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro ab->selection = dl; } -static void annotate_browser__draw_current_loop(struct ui_browser *browser) +static void annotate_browser__draw_current_jump(struct ui_browser *browser) { struct annotate_browser *ab = container_of(browser, struct annotate_browser, b); - struct map_symbol *ms = browser->priv; - struct symbol *sym = ms->sym; - struct annotation *notes = symbol__annotation(sym); - struct disasm_line *cursor = ab->selection, *pos = cursor, *target; - struct browser_disasm_line *bcursor = disasm_line__browser(cursor), - *btarget, *bpos; + struct disasm_line *cursor = ab->selection, *target; + struct browser_disasm_line *btarget, *bcursor; unsigned int from, to, start_width = 2; - list_for_each_entry_from(pos, ¬es->src->source, node) { - if (!pos->ins || !ins__is_jump(pos->ins) || - !disasm_line__has_offset(pos)) - continue; - - target = ab->offsets[pos->ops.target.offset]; - if (!target) - continue; + if (!cursor->ins || !ins__is_jump(cursor->ins) || + !disasm_line__has_offset(cursor)) + return; - btarget = disasm_line__browser(target); - if (btarget->idx <= bcursor->idx) - goto found; - } + target = ab->offsets[cursor->ops.target.offset]; + if (!target) + return; - return; + bcursor = disasm_line__browser(cursor); + btarget = disasm_line__browser(target); -found: - bpos = disasm_line__browser(pos); if (ab->hide_src_code) { - from = bpos->idx_asm; + from = bcursor->idx_asm; to = btarget->idx_asm; } else { - from = (u64)bpos->idx; + from = (u64)bcursor->idx; to = (u64)btarget->idx; } ui_browser__set_color(browser, HE_COLORSET_CODE); - if (!bpos->jump_target) + if (!bcursor->jump_target) start_width += ab->offset_width + 1; - __ui_browser__line_arrow_up(browser, 10, from, to, start_width); + __ui_browser__line_arrow(browser, 10, from, to, start_width); } static unsigned int annotate_browser__refresh(struct ui_browser *browser) { + struct annotate_browser *ab = container_of(browser, struct annotate_browser, b); int ret = ui_browser__list_head_refresh(browser); - annotate_browser__draw_current_loop(browser); + if (ab->jump_arrows) + annotate_browser__draw_current_jump(browser); return ret; } @@ -628,6 +620,9 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx, case 'o': self->use_offset = !self->use_offset; continue; + case 'j': + self->jump_arrows = !self->jump_arrows; + continue; case '/': if (annotate_browser__search(self, delay_secs)) { show_help: @@ -739,6 +734,7 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx, .use_navkeypressed = true, }, .use_offset = true, + .jump_arrows = true, }; int ret = -1; -- 2.20.1