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Subject[PATCH v6 18/21] scripts/gdb: Add lx_current convenience function
Date
This is a shorthand for *$lx_per_cpu("current_task"), i.e. a convenience
function to retrieve the currently running task of the active context.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
scripts/gdb/linux/cpus.py | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/scripts/gdb/linux/cpus.py b/scripts/gdb/linux/cpus.py
index 18337e0..b683da9 100644
--- a/scripts/gdb/linux/cpus.py
+++ b/scripts/gdb/linux/cpus.py
@@ -66,3 +66,20 @@ Note that VAR has to be quoted as string."""


PerCpu()
+
+
+class LxCurrentFunc(gdb.Function):
+ """Return current task.
+
+$lx_current([CPU]): Return the per-cpu task variable for the given CPU
+number. If CPU is omitted, the CPU of the current context is used."""
+
+ def __init__(self):
+ super(LxCurrentFunc, self).__init__("lx_current")
+
+ def invoke(self, cpu=-1):
+ var_ptr = gdb.parse_and_eval("&current_task")
+ return per_cpu(var_ptr, cpu).dereference()
+
+
+LxCurrentFunc()
--
1.8.1.1.298.ge7eed54


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