From a1d66c18c94693db1c0f5cf07741ecaa23d02006 Mon Sep 17 00:00:00 2001
From: Caio Oliveira <caio.oliveira@intel.com>
Date: Thu, 19 Jun 2025 18:18:45 -0700
Subject: [PATCH] intel/mda: If MDA_PREFIX=timestamp use the actual timestamp
 as a prefix

Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29146>
---
 docs/envvars.rst               |  1 +
 src/intel/mda/debug_archiver.c | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/docs/envvars.rst b/docs/envvars.rst
index 534a30ed1b6..3cb56c21e13 100644
--- a/docs/envvars.rst
+++ b/docs/envvars.rst
@@ -894,6 +894,7 @@ Intel driver environment variables
 .. envvar:: MDA_PREFIX
 
    Prefix added to the mda.tar filenames generated when using INTEL_DEBUG=mda.
+   If set to ``timestamp`` it will generate the current time/date as prefix.
 
 Anvil(ANV) driver environment variables
 ---------------------------------------
diff --git a/src/intel/mda/debug_archiver.c b/src/intel/mda/debug_archiver.c
index 206037f129b..42aa85a4115 100644
--- a/src/intel/mda/debug_archiver.c
+++ b/src/intel/mda/debug_archiver.c
@@ -12,6 +12,7 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <time.h>
 #include <unistd.h>
 
 struct debug_archiver
@@ -54,6 +55,21 @@ debug_archiver_open(void *mem_ctx, const char *name, const char *info)
    }
 
    if (prefix) {
+      if (!strcmp(prefix, "timestamp")) {
+         time_t now = time(NULL);
+         struct tm *tm_info = localtime(&now);
+
+         if (tm_info) {
+            prefix = ralloc_asprintf(da, "%04d%02d%02d-%02d%02d%02d",
+                                     tm_info->tm_year + 1900,
+                                     tm_info->tm_mon + 1,
+                                     tm_info->tm_mday,
+                                     tm_info->tm_hour,
+                                     tm_info->tm_min,
+                                     tm_info->tm_sec);
+         }
+      }
+
       /* Prefix shouldn't have any `/` characters. */
       if (strchr(prefix, '/')) {
          char *safe_prefix = ralloc_strdup(da, prefix);