[PATCH RT] arm64: fpsimd: use a local_lock() in addition to local_bh_disable()
From: rostedt@goodmis.org (Steven Rostedt)
Date: 2018-05-22 17:10:11
Also in:
linux-rt-users, lkml
On Thu, 17 May 2018 14:40:06 +0200 Sebastian Andrzej Siewior [off-list ref] wrote:
quoted hunk ↗ jump to hunk
+static DEFINE_LOCAL_IRQ_LOCK(fpsimd_lock); /* * Update current's FPSIMD/SVE registers from thread_struct. *@@ -594,6 +595,7 @@ int sve_set_vector_length(struct task_struct *task, * non-SVE thread. */ if (task == current) { + local_lock(fpsimd_lock); local_bh_disable();
I'm surprised that we don't have a "local_lock_bh()"? -- Steve
task_fpsimd_save();