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Piccoli" , bluescreen_avenger@verizon.net, Caleb Connolly , Petr Mladek , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: Jocelyn Falempe Subject: [PATCH v7 5/7] drm/log: Color the timestamp, to improve readability Date: Fri, 8 Nov 2024 09:10:23 +0100 Message-ID: <20241108082025.1004653-6-jfalempe@redhat.com> In-Reply-To: <20241108082025.1004653-1-jfalempe@redhat.com> References: <20241108082025.1004653-1-jfalempe@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Content-Type: text/plain; charset="utf-8" Color the timesamp prefix, similar to dmesg. Signed-off-by: Jocelyn Falempe --- drivers/gpu/drm/drm_log.c | 27 +++++++++++++++++++++------ 1 file changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/drm_log.c b/drivers/gpu/drm/drm_log.c index 226e206e8b6a3..635dff7b37ce5 100644 --- a/drivers/gpu/drm/drm_log.c +++ b/drivers/gpu/drm/drm_log.c @@ -42,6 +42,7 @@ struct drm_log_scanout { u32 format; u32 px_width; u32 front_color; + u32 prefix_color; }; =20 struct drm_log { @@ -97,7 +98,7 @@ static void drm_log_clear_line(struct drm_log_scanout *sc= anout, u32 line) } =20 static void drm_log_draw_line(struct drm_log_scanout *scanout, const char = *s, - unsigned int len) + unsigned int len, unsigned int prefix_len) { struct drm_framebuffer *fb =3D scanout->buffer->fb; struct iosys_map map; @@ -114,9 +115,10 @@ static void drm_log_draw_line(struct drm_log_scanout *= scanout, const char *s, =20 iosys_map_incr(&map, r.y1 * fb->pitches[0]); for (i =3D 0; i < len && i < scanout->columns; i++) { + u32 color =3D (i < prefix_len) ? scanout->prefix_color : scanout->front_= color; src =3D drm_draw_get_char_bitmap(font, s[i], font_pitch); drm_log_blit(&map, fb->pitches[0], src, font_pitch, font->height, font->= width, - 1, px_width, scanout->front_color); + 1, px_width, color); iosys_map_incr(&map, font->width * px_width); } =20 @@ -128,7 +130,7 @@ static void drm_log_draw_line(struct drm_log_scanout *s= canout, const char *s, } =20 static void drm_log_draw_new_line(struct drm_log_scanout *scanout, - const char *s, unsigned int len) + const char *s, unsigned int len, unsigned int prefix_len) { if (scanout->line =3D=3D 0) { drm_log_clear_line(scanout, 0); @@ -137,23 +139,35 @@ static void drm_log_draw_new_line(struct drm_log_scan= out *scanout, } else if (scanout->line + 2 < scanout->rows) drm_log_clear_line(scanout, scanout->line + 2); =20 - drm_log_draw_line(scanout, s, len); + drm_log_draw_line(scanout, s, len, prefix_len); } =20 +/* + * Depends on print_time() in printk.c + * Timestamp is written with "[%5lu.%06lu]" + */ +#define TS_PREFIX_LEN 13 + static void drm_log_draw_kmsg_record(struct drm_log_scanout *scanout, const char *s, unsigned int len) { + u32 prefix_len =3D 0; + + if (len > TS_PREFIX_LEN && s[0] =3D=3D '[' && s[6] =3D=3D '.' && s[TS_PRE= FIX_LEN] =3D=3D ']') + prefix_len =3D TS_PREFIX_LEN + 1; + /* do not print the ending \n character */ if (s[len - 1] =3D=3D '\n') len--; =20 while (len > scanout->columns) { - drm_log_draw_new_line(scanout, s, scanout->columns); + drm_log_draw_new_line(scanout, s, scanout->columns, prefix_len); s +=3D scanout->columns; len -=3D scanout->columns; + prefix_len =3D 0; } if (len) - drm_log_draw_new_line(scanout, s, len); + drm_log_draw_new_line(scanout, s, len, prefix_len); } =20 static u32 drm_log_find_usable_format(struct drm_plane *plane) @@ -193,6 +207,7 @@ static int drm_log_setup_modeset(struct drm_client_dev = *client, scanout->rows =3D height / scanout->font->height; scanout->columns =3D width / scanout->font->width; scanout->front_color =3D drm_draw_color_from_xrgb8888(0xffffff, format); + scanout->prefix_color =3D drm_draw_color_from_xrgb8888(0x4e9a06, format); return 0; } =20 --=20 2.47.0