All of lore.kernel.org
 help / color / mirror / Atom feed
* [Intel-gfx] [PATCH i-g-t 1/3] intel_gpu_top: Support exiting the tool by pressing 'q'
@ 2020-12-17 10:38 ` Tvrtko Ursulin
  0 siblings, 0 replies; 6+ messages in thread
From: Tvrtko Ursulin @ 2020-12-17 10:38 UTC (permalink / raw)
  To: igt-dev; +Cc: Intel-gfx

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Analoguous to top(1) we can enable the user to exit from the tool by
pressing 'q' on the console.

v2:
 * Fix sleep period with closed stdin. (Chris)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 man/intel_gpu_top.rst |  6 ++++
 tools/intel_gpu_top.c | 80 ++++++++++++++++++++++++++++++++++++-------
 2 files changed, 73 insertions(+), 13 deletions(-)

diff --git a/man/intel_gpu_top.rst b/man/intel_gpu_top.rst
index 5552e9699d26..2e0c3a05acc1 100644
--- a/man/intel_gpu_top.rst
+++ b/man/intel_gpu_top.rst
@@ -48,6 +48,12 @@ OPTIONS
 -d
     Select a specific GPU using supported filter.
 
+RUNTIME CONTROL
+===============
+
+Supported keys:
+
+    'q'    Exit from the tool.
 
 DEVICE SELECTION
 ================
diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index dbd353673e55..46221c9543eb 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -23,24 +23,26 @@
 
 #include "igt_device_scan.h"
 
-#include <stdio.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <stdint.h>
 #include <assert.h>
-#include <string.h>
 #include <ctype.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/stat.h>
+#include <dirent.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
-#include <sys/ioctl.h>
-#include <errno.h>
-#include <math.h>
-#include <locale.h>
 #include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <poll.h>
 #include <signal.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <termios.h>
 
 #include "igt_perf.h"
 
@@ -1246,6 +1248,54 @@ static char *tr_pmu_name(struct igt_device_card *card)
 	return device;
 }
 
+static void interactive_stdin(void)
+{
+	struct termios termios = { };
+	int ret;
+
+	ret = fcntl(0, F_GETFL, NULL);
+	ret |= O_NONBLOCK;
+	ret = fcntl(0, F_SETFL, ret);
+	assert(ret == 0);
+
+	ret = tcgetattr(0, &termios);
+	assert(ret == 0);
+
+	termios.c_lflag &= ~ICANON;
+	termios.c_cc[VMIN] = 1;
+	termios.c_cc[VTIME] = 0; /* Deciseconds only - we'll use poll. */
+
+	ret = tcsetattr(0, TCSAFLUSH, &termios);
+	assert(ret == 0);
+}
+
+static void process_stdin(unsigned int timeout_us)
+{
+	struct pollfd p = { .fd = 0, .events = POLLIN };
+	int ret;
+
+	ret = poll(&p, 1, timeout_us / 1000);
+	if (ret <= 0) {
+		if (ret < 0)
+			stop_top = true;
+		return;
+	}
+
+	for (;;) {
+		char c;
+
+		ret = read(0, &c, 1);
+		if (ret <= 0)
+			break;
+
+		switch (c) {
+		case 'q':
+			stop_top = true;
+			break;
+		};
+	}
+}
+
 int main(int argc, char **argv)
 {
 	unsigned int period_us = DEFAULT_PERIOD_MS * 1000;
@@ -1315,6 +1365,7 @@ int main(int argc, char **argv)
 	switch (output_mode) {
 	case INTERACTIVE:
 		pops = &term_pops;
+		interactive_stdin();
 		break;
 	case STDOUT:
 		pops = &stdout_pops;
@@ -1427,7 +1478,10 @@ int main(int argc, char **argv)
 		if (stop_top)
 			break;
 
-		usleep(period_us);
+		if (output_mode == INTERACTIVE)
+			process_stdin(period_us);
+		else
+			usleep(period_us);
 	}
 
 	free(codename);
-- 
2.25.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2020-12-17 12:14 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-12-17 10:38 [Intel-gfx] [PATCH i-g-t 1/3] intel_gpu_top: Support exiting the tool by pressing 'q' Tvrtko Ursulin
2020-12-17 10:38 ` [igt-dev] " Tvrtko Ursulin
2020-12-17 10:38 ` [Intel-gfx] [PATCH i-g-t 2/3] intel_gpu_top: Aggregate engine busyness per class Tvrtko Ursulin
2020-12-17 10:38   ` [igt-dev] " Tvrtko Ursulin
2020-12-17 10:38 ` [Intel-gfx] [PATCH i-g-t 3/3] intel_gpu_top: Fix interactive mode on serial console Tvrtko Ursulin
2020-12-17 12:14 ` [igt-dev] ✗ Fi.CI.BAT: failure for series starting with [i-g-t,1/3] intel_gpu_top: Support exiting the tool by pressing 'q' Patchwork

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.