From: Christian Brauner <christian.brauner@ubuntu.com>
To: linux-kernel@vger.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Christian Brauner <christian.brauner@ubuntu.com>,
linux-alpha@vger.kernel.org
Subject: [PATCH 09/17] alpha: switch to copy_thread_tls()
Date: Tue, 23 Jun 2020 01:43:18 +0200 [thread overview]
Message-ID: <20200622234326.906346-10-christian.brauner@ubuntu.com> (raw)
In-Reply-To: <20200622234326.906346-1-christian.brauner@ubuntu.com>
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-alpha@vger.kernel.org
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
arch/alpha/Kconfig | 1 +
arch/alpha/kernel/process.c | 9 ++++-----
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 10862c5a8c76..b01515c6b2ed 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -38,6 +38,7 @@ config ALPHA
select OLD_SIGSUSPEND
select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
select MMU_GATHER_NO_RANGE
+ select HAVE_COPY_THREAD_TLS
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index b45f0b0d6511..dfdb6b6ba61c 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -233,10 +233,9 @@ release_thread(struct task_struct *dead_task)
/*
* Copy architecture-specific thread state
*/
-int
-copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long kthread_arg,
- struct task_struct *p)
+int copy_thread_tls(unsigned long clone_flags, unsigned long usp,
+ unsigned long kthread_arg, struct task_struct *p,
+ unsigned long tls)
{
extern void ret_from_fork(void);
extern void ret_from_kernel_thread(void);
@@ -267,7 +266,7 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
required for proper operation in the case of a threaded
application calling fork. */
if (clone_flags & CLONE_SETTLS)
- childti->pcb.unique = regs->r20;
+ childti->pcb.unique = tls;
else
regs->r20 = 0; /* OSF/1 has some strange fork() semantics. */
childti->pcb.usp = usp ?: rdusp();
--
2.27.0
next prev parent reply other threads:[~2020-06-22 23:47 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-22 23:43 [PATCH 00/17] arch: remove do_fork() and HAVE_COPY_THREAD_TLS Christian Brauner
2020-06-22 23:43 ` [PATCH 01/17] fork: fold legacy_clone_args_valid() into _do_fork() Christian Brauner
[not found] ` <20200627082748.GM5535@shao2-debian>
2020-06-27 12:23 ` [fork] 11689456e6: ltp.clone302.fail Christian Brauner
2020-06-22 23:43 ` [PATCH 02/17] sparc64: enable HAVE_COPY_THREAD_TLS Christian Brauner
2020-06-23 3:35 ` David Miller
2020-06-23 8:42 ` Christian Brauner
2020-06-22 23:43 ` [PATCH 03/17] sparc: share process creation helpers between sparc and sparc64 Christian Brauner
2020-06-22 23:43 ` [PATCH 04/17] sparc: unconditionally enable HAVE_COPY_THREAD_TLS Christian Brauner
2020-06-22 23:43 ` [PATCH 05/17] ia64: enable HAVE_COPY_THREAD_TLS, switch to kernel_clone_args Christian Brauner
2020-06-22 23:43 ` [PATCH 06/17] nios2: " Christian Brauner
2020-06-22 23:43 ` [PATCH 07/17] h8300: select " Christian Brauner
2020-06-22 23:43 ` [PATCH 08/17] fork: remove do_fork() Christian Brauner
2020-06-22 23:43 ` Christian Brauner [this message]
2020-06-22 23:43 ` [PATCH 10/17] c6x: switch to copy_thread_tls() Christian Brauner
2020-06-22 23:43 ` [PATCH 11/17] hexagon: " Christian Brauner
2020-06-23 16:11 ` Brian Cain
2020-06-22 23:43 ` [PATCH 12/17] microblaze: " Christian Brauner
2020-06-22 23:43 ` [PATCH 13/17] nds32: " Christian Brauner
2020-06-22 23:43 ` [PATCH 14/17] sh: " Christian Brauner
2020-06-22 23:43 ` [PATCH 15/17] unicore: " Christian Brauner
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