c6x: switch to copy_thread_tls() (e0daa22c) · Commits · 戴 / test

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: Mark Salter <msalter@redhat.com> Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com> Cc: linux-c6x-dev@linux-c6x.org Signed-off-by:

Christian Brauner <christian.brauner@ubuntu.com>

arch/c6x/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ config C6X
		select GENERIC_CLOCKEVENTS
		select MODULES_USE_ELF_RELA
		select MMU_GATHER_NO_RANGE if MMU
		select HAVE_COPY_THREAD_TLS

		config MMU
		def_bool n

arch/c6x/kernel/process.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -104,9 +104,9 @@ void start_thread(struct pt_regs *regs, unsigned int pc, unsigned long usp)
		/*
		* Copy a new thread context in its stack.
		*/
		int copy_thread(unsigned long clone_flags, unsigned long usp,
		unsigned long ustk_size,
		struct task_struct *p)
		int copy_thread_tls(unsigned long clone_flags, unsigned long usp,
		unsigned long ustk_size, struct task_struct *p,
		unsigned long tls)
		{
		struct pt_regs *childregs;

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