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backend/drm: improve atomic commit flag logging 

We weren't logging all of the flags, which made debugging more
difficult.
This commit is contained in:
Simon Ser 2022-05-27 14:54:43 +02:00
parent 43020963d4
commit 2563b79dc2
1 changed files with 42 additions and 3 deletions
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45
backend/drm/atomic.c
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@ -1,4 +1,6 @@
#define _POSIX_C_SOURCE 200809L
#include <stdlib.h>
#include <stdio.h>
#include <wlr/util/log.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
@ -6,6 +8,41 @@
#include "backend/drm/iface.h"
#include "backend/drm/util.h"
static char *atomic_commit_flags_str(uint32_t flags) {
const char *const l[] = {
(flags & DRM_MODE_PAGE_FLIP_EVENT) ? "PAGE_FLIP_EVENT" : NULL,
(flags & DRM_MODE_PAGE_FLIP_ASYNC) ? "PAGE_FLIP_ASYNC" : NULL,
(flags & DRM_MODE_ATOMIC_TEST_ONLY) ? "ATOMIC_TEST_ONLY" : NULL,
(flags & DRM_MODE_ATOMIC_NONBLOCK) ? "ATOMIC_NONBLOCK" : NULL,
(flags & DRM_MODE_ATOMIC_ALLOW_MODESET) ? "ATOMIC_ALLOW_MODESET" : NULL,
};
char *buf = NULL;
size_t size = 0;
FILE *f = open_memstream(&buf, &size);
if (f == NULL) {
return NULL;
}
for (size_t i = 0; i < sizeof(l) / sizeof(l[0]); i++) {
if (l[i] == NULL) {
continue;
}
if (ftell(f) > 0) {
fprintf(f, " | ");
}
fprintf(f, "%s", l[i]);
}
if (ftell(f) == 0) {
fprintf(f, "none");
}
fclose(f);
return buf;
}
struct atomic {
drmModeAtomicReq *req;
bool failed;
@ -33,9 +70,11 @@ static bool atomic_commit(struct atomic *atom,
if (ret != 0) {
wlr_drm_conn_log_errno(conn,
(flags & DRM_MODE_ATOMIC_TEST_ONLY) ? WLR_DEBUG : WLR_ERROR,
"Atomic %s failed (%s)",
(flags & DRM_MODE_ATOMIC_TEST_ONLY) ? "test" : "commit",
(flags & DRM_MODE_ATOMIC_ALLOW_MODESET) ? "modeset" : "pageflip");
"Atomic commit failed");
char *flags_str = atomic_commit_flags_str(flags);
wlr_log(WLR_DEBUG, "(Atomic commit flags: %s)",
flags_str ? flags_str : "<error>");
free(flags_str);
return false;
}