@@ -1179,12 +1179,22 @@ static int append_cpu_nr(struct netconsole_target *nt, int offset)
raw_smp_processor_id());
}
+static int append_taskname(struct netconsole_target *nt, int offset)
+{
+ if (WARN_ON_ONCE(!current))
+ return 0;
+
+ return scnprintf(&nt->extradata_complete[offset],
+ MAX_EXTRADATA_ENTRY_LEN, " taskname=%s\n",
+ current->comm);
+}
/*
* prepare_extradata - append sysdata at extradata_complete in runtime
* @nt: target to send message to
*/
static int prepare_extradata(struct netconsole_target *nt)
{
+ u32 fields = SYSDATA_CPU_NR | SYSDATA_TASKNAME;
int extradata_len;
/* userdata was appended when configfs write helper was called
@@ -1192,11 +1202,13 @@ static int prepare_extradata(struct netconsole_target *nt)
*/
extradata_len = nt->userdata_length;
- if (!(nt->sysdata_fields & SYSDATA_CPU_NR))
+ if (!(nt->sysdata_fields & fields))
goto out;
if (nt->sysdata_fields & SYSDATA_CPU_NR)
extradata_len += append_cpu_nr(nt, nt->userdata_length);
+ if (nt->sysdata_fields & SYSDATA_TASKNAME)
+ extradata_len += append_taskname(nt, extradata_len);
WARN_ON_ONCE(extradata_len >
MAX_EXTRADATA_ENTRY_LEN * MAX_EXTRADATA_ITEMS);
This is the core patch for this whole patchset. Add support for including the current task's name in netconsole's extra data output. This adds a new append_taskname() function that writes the task name (from current->comm) into the target's extradata buffer, similar to how CPU numbers are handled. The task name is included when the SYSDATA_TASKNAME field is set, appearing in the format "taskname=<name>" in the output. This additional context can help with debugging by showing which task generated each console message. Signed-off-by: Breno Leitao <leitao@debian.org> --- drivers/net/netconsole.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)