diff options
| author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2024-10-02 17:46:07 -0700 |
|---|---|---|
| committer | John Harrison <John.C.Harrison@Intel.com> | 2024-10-07 18:34:45 -0700 |
| commit | 754e707e20e47482384f6e64eb3af08273292010 (patch) | |
| tree | bf37324a5fee969710451038c25a1c5d5e7db8ee /drivers/gpu/drm/drm_print.c | |
| parent | d8ce1a97722617317b04eb9f19ab8d6d95379f7a (diff) | |
drm/print: Introduce drm_line_printer
This drm printer wrapper can be used to increase the robustness of
the captured output generated by any other drm_printer to make sure
we didn't lost any intermediate lines of the output by adding line
numbers to each output line. Helpful for capturing some crash data.
v2: Extended short int counters to full int (JohnH)
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241003004611.2323493-8-John.C.Harrison@Intel.com
Diffstat (limited to 'drivers/gpu/drm/drm_print.c')
| -rw-r--r-- | drivers/gpu/drm/drm_print.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index 0081190201a7..08cfea04e22b 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -235,6 +235,20 @@ void __drm_printfn_err(struct drm_printer *p, struct va_format *vaf) } EXPORT_SYMBOL(__drm_printfn_err); +void __drm_printfn_line(struct drm_printer *p, struct va_format *vaf) +{ + unsigned int counter = ++p->line.counter; + const char *prefix = p->prefix ?: ""; + const char *pad = p->prefix ? " " : ""; + + if (p->line.series) + drm_printf(p->arg, "%s%s%u.%u: %pV", + prefix, pad, p->line.series, counter, vaf); + else + drm_printf(p->arg, "%s%s%u: %pV", prefix, pad, counter, vaf); +} +EXPORT_SYMBOL(__drm_printfn_line); + /** * drm_puts - print a const string to a &drm_printer stream * @p: the &drm printer |