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c6x: switch to copy_thread_tls()

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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>
This commit is contained in:
Christian Brauner 2020-05-24 23:14:23 +02:00
parent 0fdfc53f24
commit e0daa22c29
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GPG Key ID: 91C61BC06578DCA2
2 changed files with 4 additions and 3 deletions
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1
arch/c6x/Kconfig
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@ -22,6 +22,7 @@ config C6X
select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS
select MODULES_USE_ELF_RELA select MODULES_USE_ELF_RELA
select MMU_GATHER_NO_RANGE if MMU select MMU_GATHER_NO_RANGE if MMU
select HAVE_COPY_THREAD_TLS
config MMU config MMU
def_bool n def_bool n

6
arch/c6x/kernel/process.c
View File

@ -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. * Copy a new thread context in its stack.
*/ */
int copy_thread(unsigned long clone_flags, unsigned long usp, int copy_thread_tls(unsigned long clone_flags, unsigned long usp,
unsigned long ustk_size, unsigned long ustk_size, struct task_struct *p,
struct task_struct *p) unsigned long tls)
{ {
struct pt_regs *childregs; struct pt_regs *childregs;