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microblaze: 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: Michal Simek <monstr@monstr.eu>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2020-05-24 23:19:09 +02:00
parent 643d48b8e6
commit ad1bb82c05
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GPG Key ID: 91C61BC06578DCA2
2 changed files with 4 additions and 3 deletions
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1
arch/microblaze/Kconfig
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@ -46,6 +46,7 @@ config MICROBLAZE
select CPU_NO_EFFICIENT_FFS
select MMU_GATHER_NO_RANGE if MMU
select SPARSE_IRQ
select HAVE_COPY_THREAD_TLS
# Endianness selection
choice

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

@ -54,8 +54,8 @@ void flush_thread(void)
{
}
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 pt_regs *childregs = task_pt_regs(p);
struct thread_info *ti = task_thread_info(p);
@ -114,7 +114,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
* which contains TLS area
*/
if (clone_flags & CLONE_SETTLS)
childregs->r21 = childregs->r10;
childregs->r21 = tls;
return 0;
}