Unverified Commit 643d48b8 authored by Christian Brauner's avatar Christian Brauner
Browse files

hexagon: switch to copy_thread_tls() 



Use the copy_thread_tls() calling convention which passes tls through a
register. This is required so we can remove the copy_thread{_tls}() split
and remove the HAVE_COPY_THREAD_TLS macro.

Cc: linux-hexagon@vger.kernel.org
Acked-by: default avatarBrian Cain <bcain@codeaurora.org>
Signed-off-by: default avatarChristian Brauner <christian.brauner@ubuntu.com>
parent e0daa22c

arch/hexagon/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ config HEXAGON 
	select GENERIC_CLOCKEVENTS_BROADCAST

	select MODULES_USE_ELF_RELA

	select GENERIC_CPU_DEVICES

	select HAVE_COPY_THREAD_TLS

	help

	  Qualcomm Hexagon is a processor architecture designed for high

	  performance and low power across a wide variety of applications.

arch/hexagon/kernel/process.c

+3 −3
Original line number Diff line number Diff line
@@ -50,8 +50,8 @@ void arch_cpu_idle(void) 
/*

 * Copy architecture-specific thread state

 */

int copy_thread(unsigned long clone_flags, unsigned long usp,

		unsigned long arg, struct task_struct *p)

int copy_thread_tls(unsigned long clone_flags, unsigned long usp,

		    unsigned long arg, struct task_struct *p, unsigned long tls)

{

	struct thread_info *ti = task_thread_info(p);

	struct hexagon_switch_stack *ss;
@@ -100,7 +100,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, 
	 * ugp is used to provide TLS support.

	 */

	if (clone_flags & CLONE_SETTLS)

		childregs->ugp = childregs->r04;

		childregs->ugp = tls;



	/*

	 * Parent sees new pid -- not necessary, not even possible at

CRA Git | Maintained and supported by SUSTech CRA and CCSE