[Intel-gfx] [RFC i-g-t] intel_gpu_top: User friendly device listing
Zbigniew Kempczyński
zbigniew.kempczynski at intel.com
Thu Oct 15 04:36:27 UTC 2020
On Wed, Oct 14, 2020 at 11:48:53AM +0100, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
>
> Adding a new device selection print type suitable for user-facing
> use cases like intel_gpu_top -L and potentially lsgpu.
>
> Instead of:
>
> sys:/sys/devices/pci0000:00/0000:00:02.0/drm/card0
> subsystem : drm
> drm card : /dev/dri/card0
> parent : sys:/sys/devices/pci0000:00/0000:00:02.0
>
> sys:/sys/devices/pci0000:00/0000:00:02.0/drm/renderD128
> subsystem : drm
> drm render : /dev/dri/renderD128
> parent : sys:/sys/devices/pci0000:00/0000:00:02.0
>
> sys:/sys/devices/pci0000:00/0000:00:02.0
> subsystem : pci
> drm card : /dev/dri/card0
> drm render : /dev/dri/renderD128
> vendor : 8086
> device : 193B
>
> New format looks like:
>
> card0 8086:193B drm:/dev/dri/card0
> └─renderD128 drm:/dev/dri/renderD128
>
> Advantages are more compact, more readable, one entry per GPU, shorter
> string to copy and paste to intel_gpu_top -d, or respective usage.
Looks nice and more intuitive.
1. Add -s switch to handle simple print (current default in lsgpu)
2. Change to user format as default.
--
Zbigniew
>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> Cc: Petri Latvala <petri.latvala at intel.com>
> Cc: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
> ---
> lib/igt_device_scan.c | 109 +++++++++++++++++++++++++++++++++++++-----
> lib/igt_device_scan.h | 1 +
> tools/intel_gpu_top.c | 3 +-
> 3 files changed, 100 insertions(+), 13 deletions(-)
>
> diff --git a/lib/igt_device_scan.c b/lib/igt_device_scan.c
> index f4d43c733314..ce0ea61dda50 100644
> --- a/lib/igt_device_scan.c
> +++ b/lib/igt_device_scan.c
> @@ -695,18 +695,26 @@ static inline void _pr_simple2(const char *k, const char *v1, const char *v2)
> printf(" %-16s: %s:%s\n", k, v1, v2);
> }
>
> -static void igt_devs_print_simple(struct igt_list_head *view)
> +static bool __check_empty(struct igt_list_head *view)
> {
> - struct igt_device *dev;
> -
> if (!view)
> - return;
> + return true;
>
> if (igt_list_empty(view)) {
> printf("No GPU devices found\n");
> - return;
> + return true;
> }
>
> + return false;
> +}
> +
> +static void igt_devs_print_simple(struct igt_list_head *view)
> +{
> + struct igt_device *dev;
> +
> + if (__check_empty(view))
> + return;
> +
> igt_list_for_each_entry(dev, view, link) {
> printf("sys:%s\n", dev->syspath);
> if (dev->subsystem)
> @@ -728,6 +736,89 @@ static void igt_devs_print_simple(struct igt_list_head *view)
> }
> }
>
> +static struct igt_device *
> +__find_pci(struct igt_list_head *view, const char *drm)
> +{
> + struct igt_device *dev;
> +
> + igt_list_for_each_entry(dev, view, link) {
> + if (!is_pci_subsystem(dev) || !dev->drm_card)
> + continue;
> +
> + if (!strcmp(dev->drm_card, drm))
> + return dev;
> + }
> +
> + return NULL;
> +}
> +
> +static void igt_devs_print_user(struct igt_list_head *view)
> +{
> + struct igt_device *dev;
> +
> + if (__check_empty(view))
> + return;
> +
> + igt_list_for_each_entry(dev, view, link) {
> + unsigned int i, num_children;
> + struct igt_device *pci_dev;
> + struct igt_device *dev2;
> + char filter[64];
> + char *drm_name;
> + int ret;
> +
> + if (!is_drm_subsystem(dev))
> + continue;
> + if (!dev->drm_card || dev->drm_render)
> + continue;
> +
> + drm_name = rindex(dev->drm_card, '/');
> + if (!drm_name || !*++drm_name)
> + continue;
> +
> + ret = snprintf(filter, sizeof(filter), "drm:%s", dev->drm_card);
> + igt_assert(ret < sizeof(filter));
> +
> + pci_dev = __find_pci(view, dev->drm_card);
> + if (pci_dev)
> + printf("%-24s%4s:%4s %s\n",
> + drm_name, pci_dev->vendor, pci_dev->device,
> + filter);
> + else
> + printf("%-24s %s\n", drm_name, filter);
> +
> + num_children = 0;
> + igt_list_for_each_entry(dev2, view, link) {
> + if (!is_drm_subsystem(dev2) || !dev2->drm_render)
> + continue;
> + if (strcmp(dev2->parent->syspath, dev->parent->syspath))
> + continue;
> +
> + num_children++;
> + }
> +
> + i = 0;
> + igt_list_for_each_entry(dev2, view, link) {
> + if (!is_drm_subsystem(dev2) || !dev2->drm_render)
> + continue;
> + if (strcmp(dev2->parent->syspath, dev->parent->syspath))
> + continue;
> +
> + drm_name = rindex(dev2->drm_render, '/');
> + if (!drm_name || !*++drm_name)
> + continue;
> +
> + ret = snprintf(filter, sizeof(filter), "drm:%s",
> + dev2->drm_render);
> + igt_assert(ret < sizeof(filter));
> +
> + printf("%s%-22s %s\n",
> + (++i == num_children) ? "└─" : "├─",
> + drm_name, filter);
> + }
> + }
> +}
> +
> static inline void _print_key_value(const char* k, const char *v)
> {
> printf("%-32s: %s\n", k, v);
> @@ -752,14 +843,9 @@ static void igt_devs_print_detail(struct igt_list_head *view)
> {
> struct igt_device *dev;
>
> - if (!view)
> + if (__check_empty(view))
> return;
>
> - if (igt_list_empty(view)) {
> - printf("No GPU devices found\n");
> - return;
> - }
> -
> igt_list_for_each_entry(dev, view, link) {
> printf("========== %s:%s ==========\n",
> dev->subsystem, dev->syspath);
> @@ -781,6 +867,7 @@ static struct print_func {
> } print_functions[] = {
> [IGT_PRINT_SIMPLE] = { .prn = igt_devs_print_simple },
> [IGT_PRINT_DETAIL] = { .prn = igt_devs_print_detail },
> + [IGT_PRINT_USER] = { .prn = igt_devs_print_user },
> };
>
> /**
> diff --git a/lib/igt_device_scan.h b/lib/igt_device_scan.h
> index bd937d22752c..9e13ed9db406 100644
> --- a/lib/igt_device_scan.h
> +++ b/lib/igt_device_scan.h
> @@ -37,6 +37,7 @@
> enum igt_devices_print_type {
> IGT_PRINT_SIMPLE,
> IGT_PRINT_DETAIL,
> + IGT_PRINT_USER, /* End user friendly. */
> };
>
> #define INTEGRATED_I915_GPU_PCI_ID "0000:00:02.0"
> diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
> index 79a936ffbe1a..b984edc656c7 100644
> --- a/tools/intel_gpu_top.c
> +++ b/tools/intel_gpu_top.c
> @@ -1313,7 +1313,6 @@ int main(int argc, char **argv)
> unsigned int i;
> int ret = 0, ch;
> bool list_device = false;
> - enum igt_devices_print_type printtype = IGT_PRINT_SIMPLE;
> char *pmu_device, *opt_device = NULL;
> struct igt_device_card card;
>
> @@ -1388,7 +1387,7 @@ int main(int argc, char **argv)
> igt_devices_scan(false);
>
> if (list_device) {
> - igt_devices_print(printtype);
> + igt_devices_print(IGT_PRINT_USER);
> goto exit;
> }
>
> --
> 2.25.1
>
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