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perf report/top: Add 'k' hotkey to zoom directly into the kernel map

tip: perf/core tip-bot2 for Arnaldo Carvalho de Melo 1 participant 1 message Jan 10, 2020 1 message not in the archive perf events

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The following commit has been merged into the perf/core branch of tip:

Commit-ID:     209f4e70a2f10bc6819eb20c5bc3988be31972c6
Gitweb:        https://git.kernel.org/tip/209f4e70a2f10bc6819eb20c5bc3988be31972c6
Author:        Arnaldo Carvalho de Melo <[email protected]>
AuthorDate:    Thu, 12 Dec 2019 13:06:36 -03:00
Committer:     Arnaldo Carvalho de Melo <[email protected]>
CommitterDate: Mon, 06 Jan 2020 11:46:10 -03:00

perf report/top: Add 'k' hotkey to zoom directly into the kernel map

As a convenience, equivalent to pressing Enter in a line with a kernel symbol and then selecting "Zoom" into the kernel DSO.

Reviewed-by Jiri Olsa <[email protected]>
Cc Adrian Hunter <[email protected]>
Cc Andi Kleen <[email protected]>
Cc Jin Yao <[email protected]>
Cc Kan Liang <[email protected]>
Cc Linus Torvalds <[email protected]>
Cc Namhyung Kim <[email protected]>
Link https://lkml.kernel.org/n/[email protected] open here
Signed-off-by Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/ui/browsers/hists.c |  9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
tools/perf/ui/browsers/hists.c +8 -1
index 8aba1ae..6dfdd8d 100644
@@ -18,7 +18,9 @@
 #include "../../util/evlist.h"
 #include "../../util/header.h"
 #include "../../util/hist.h"
+#include "../../util/machine.h"
 #include "../../util/map.h"
+#include "../../util/maps.h"
 #include "../../util/symbol.h"
 #include "../../util/map_symbol.h"
 #include "../../util/branch.h"

@@ -2566,7 +2568,7 @@ add_dso_opt(struct hist_browser *browser, struct popup_action *act,
 	if (!hists__has(browser->hists, dso) || map == NULL)
 		return 0;
 
-	if (asprintf(optstr, "Zoom %s %s DSO",
+	if (asprintf(optstr, "Zoom %s %s DSO (use the 'k' hotkey to zoom directly into the kernel)",
 		     browser->hists->dso_filter ? "out of" : "into",
 		     __map__is_kernel(map) ? "the Kernel" : map->dso->short_name) < 0)
 		return 0;

@@ -2936,6 +2938,7 @@ static int perf_evsel__hists_browse(struct evsel *evsel, int nr_events,
 	"E             Expand all callchains\n"				\
 	"F             Toggle percentage of filtered entries\n"		\
 	"H             Display column headers\n"			\
+	"k             Zoom into the kernel map\n"			\
 	"L             Change percent limit\n"				\
 	"m             Display context menu\n"				\
 	"S             Zoom into current Processor Socket\n"		\

@@ -3033,6 +3036,10 @@ static int perf_evsel__hists_browse(struct evsel *evsel, int nr_events,
 			actions->ms.map = map;
 			do_zoom_dso(browser, actions);
 			continue;
+		case 'k':
+			if (browser->selection != NULL)
+				hists_browser__zoom_map(browser, browser->selection->maps->machine->vmlinux_map);
+			continue;
 		case 'V':
 			verbose = (verbose + 1) % 4;
 			browser->show_dso = verbose > 0;