From: Anton Blanchard <anton@samba•org>
To: benh@kernel•crashing.org, paulus@samba•org, mpe@ellerman•id.au,
mikey@neuling•org, cyrilbur@gmail•com, scottwood@freescale•com
Cc: linuxppc-dev@lists•ozlabs.org
Subject: [PATCH 19/19] powerpc: clean up asm/switch_to.h
Date: Thu, 29 Oct 2015 11:44:11 +1100 [thread overview]
Message-ID: <1446079451-8774-20-git-send-email-anton@samba.org> (raw)
In-Reply-To: <1446079451-8774-1-git-send-email-anton@samba.org>
Remove a bunch of unnecessary fallback functions and group
things in a more logical way.
Signed-off-by: Anton Blanchard <anton@samba•org>
---
arch/powerpc/include/asm/switch_to.h | 35 ++++++++++-------------------------
arch/powerpc/kernel/process.c | 2 +-
2 files changed, 11 insertions(+), 26 deletions(-)
diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h
index 81d46a4..5b268b6 100644
--- a/arch/powerpc/include/asm/switch_to.h
+++ b/arch/powerpc/include/asm/switch_to.h
@@ -14,23 +14,18 @@ extern struct task_struct *__switch_to(struct task_struct *,
struct task_struct *);
#define switch_to(prev, next, last) ((last) = __switch_to((prev), (next)))
-struct thread_struct;
extern struct task_struct *_switch(struct thread_struct *prev,
struct thread_struct *next);
-extern void enable_kernel_fp(void);
-extern void enable_kernel_altivec(void);
-extern void enable_kernel_vsx(void);
+extern void switch_booke_debug_regs(struct debug_reg *new_debug);
+
extern int emulate_altivec(struct pt_regs *);
-extern void __giveup_vsx(struct task_struct *);
-extern void giveup_vsx(struct task_struct *);
-extern void enable_kernel_spe(void);
-extern void load_up_spe(struct task_struct *);
-extern void giveup_all(struct task_struct *);
+
extern void flush_all_to_thread(struct task_struct *);
-extern void switch_booke_debug_regs(struct debug_reg *new_debug);
+extern void giveup_all(struct task_struct *);
#ifdef CONFIG_PPC_FPU
+extern void enable_kernel_fp(void);
extern void flush_fp_to_thread(struct task_struct *);
extern void giveup_fpu(struct task_struct *);
extern void __giveup_fpu(struct task_struct *);
@@ -38,14 +33,12 @@ static inline void disable_kernel_fp(void)
{
msr_check_and_clear(MSR_FP);
}
-
#else
static inline void flush_fp_to_thread(struct task_struct *t) { }
-static inline void giveup_fpu(struct task_struct *t) { }
-static inline void __giveup_fpu(struct task_struct *t) { }
#endif
#ifdef CONFIG_ALTIVEC
+extern void enable_kernel_altivec(void);
extern void flush_altivec_to_thread(struct task_struct *);
extern void giveup_altivec(struct task_struct *);
extern void __giveup_altivec(struct task_struct *);
@@ -53,25 +46,21 @@ static inline void disable_kernel_altivec(void)
{
msr_check_and_clear(MSR_VEC);
}
-#else
-static inline void flush_altivec_to_thread(struct task_struct *t) { }
-static inline void giveup_altivec(struct task_struct *t) { }
-static inline void __giveup_altivec(struct task_struct *t) { }
#endif
#ifdef CONFIG_VSX
+extern void enable_kernel_vsx(void);
extern void flush_vsx_to_thread(struct task_struct *);
+extern void giveup_vsx(struct task_struct *);
+extern void __giveup_vsx(struct task_struct *);
static inline void disable_kernel_vsx(void)
{
msr_check_and_clear(MSR_FP|MSR_VEC|MSR_VSX);
}
-#else
-static inline void flush_vsx_to_thread(struct task_struct *t)
-{
-}
#endif
#ifdef CONFIG_SPE
+extern void enable_kernel_spe(void);
extern void flush_spe_to_thread(struct task_struct *);
extern void giveup_spe(struct task_struct *);
extern void __giveup_spe(struct task_struct *);
@@ -79,10 +68,6 @@ static inline void disable_kernel_spe(void)
{
msr_check_and_clear(MSR_SPE);
}
-#else
-static inline void flush_spe_to_thread(struct task_struct *t) { }
-static inline void giveup_spe(struct task_struct *t) { }
-static inline void __giveup_spe(struct task_struct *t) { }
#endif
static inline void clear_task_ebb(struct task_struct *t)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index b34e1e5..1841b59 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -174,7 +174,6 @@ void flush_fp_to_thread(struct task_struct *tsk)
}
}
EXPORT_SYMBOL_GPL(flush_fp_to_thread);
-#endif /* CONFIG_PPC_FPU */
void enable_kernel_fp(void)
{
@@ -186,6 +185,7 @@ void enable_kernel_fp(void)
__giveup_fpu(current);
}
EXPORT_SYMBOL(enable_kernel_fp);
+#endif /* CONFIG_PPC_FPU */
#ifdef CONFIG_ALTIVEC
void giveup_altivec(struct task_struct *tsk)
--
2.5.0
next prev parent reply other threads:[~2015-10-29 1:06 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-29 0:43 [PATCH 00/19] Context switch improvements Anton Blanchard
2015-10-29 0:43 ` [PATCH 01/19] powerpc: Don't disable kernel FP/VMX/VSX MSR bits on context switch Anton Blanchard
2015-12-07 10:30 ` [01/19] " Michael Ellerman
2015-10-29 0:43 ` [PATCH 02/19] powerpc: Don't disable MSR bits in do_load_up_transact_*() functions Anton Blanchard
2015-10-29 0:43 ` [PATCH 03/19] powerpc: Create context switch helpers save_sprs() and restore_sprs() Anton Blanchard
2017-09-02 3:42 ` Benjamin Herrenschmidt
2015-10-29 0:43 ` [PATCH 04/19] powerpc: Remove redundant mflr in _switch Anton Blanchard
2015-10-29 0:43 ` [PATCH 05/19] powerpc: Remove UP only lazy floating point and vector optimisations Anton Blanchard
2015-10-29 0:43 ` [PATCH 06/19] powerpc: Simplify TM restore checks Anton Blanchard
2015-10-29 0:43 ` [PATCH 07/19] powerpc: Create mtmsrd_isync() Anton Blanchard
2015-12-01 11:23 ` Michael Ellerman
2015-12-01 23:25 ` Michael Ellerman
2017-09-02 3:44 ` Benjamin Herrenschmidt
2015-10-29 0:44 ` [PATCH 08/19] powerpc: Remove NULL task struct pointer checks in FP and vector code Anton Blanchard
2015-10-29 0:44 ` [PATCH 09/19] powerpc: Move part of giveup_fpu,altivec,spe into c Anton Blanchard
2015-12-01 11:17 ` Michael Ellerman
2015-10-29 0:44 ` [PATCH 10/19] powerpc: Move part of giveup_vsx " Anton Blanchard
2015-10-29 0:44 ` [PATCH 11/19] crypto: vmx: Only call enable_kernel_vsx() Anton Blanchard
2015-10-29 0:44 ` [PATCH 12/19] powerpc: Create msr_check_and_{set,clear}() Anton Blanchard
2015-10-29 7:25 ` kbuild test robot
2015-10-29 0:44 ` [PATCH 13/19] powerpc: Create disable_kernel_{fp,altivec,vsx,spe}() Anton Blanchard
2015-10-29 0:44 ` [PATCH 14/19] powerpc: Add ppc_strict_facility_enable boot option Anton Blanchard
2017-09-02 3:48 ` Benjamin Herrenschmidt
2015-10-29 0:44 ` [PATCH 15/19] powerpc: Remove fp_enable() and vec_enable(), use msr_check_and_{set, clear}() Anton Blanchard
2015-10-29 0:44 ` [PATCH 16/19] powerpc: create giveup_all() Anton Blanchard
2015-12-02 8:24 ` Michael Ellerman
2015-10-29 0:44 ` [PATCH 17/19] powerpc: create flush_all_to_thread() Anton Blanchard
2015-10-29 0:44 ` [PATCH 18/19] powerpc: Rearrange __switch_to() Anton Blanchard
2015-10-29 0:44 ` Anton Blanchard [this message]
2015-12-02 8:42 ` [PATCH 00/19] Context switch improvements Anshuman Khandual
2015-12-02 22:37 ` Michael Neuling
-- strict thread matches above, loose matches on Subject: below --
2015-10-28 0:50 [PATCH 01/19] powerpc: Don't disable kernel FP/VMX/VSX MSR bits on context switch Anton Blanchard
2015-10-28 0:51 ` [PATCH 19/19] powerpc: clean up asm/switch_to.h Anton Blanchard
2015-10-28 3:19 ` kbuild test robot
2015-10-28 4:24 ` kbuild test robot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1446079451-8774-20-git-send-email-anton@samba.org \
--to=anton@samba$(echo .)org \
--cc=benh@kernel$(echo .)crashing.org \
--cc=cyrilbur@gmail$(echo .)com \
--cc=linuxppc-dev@lists$(echo .)ozlabs.org \
--cc=mikey@neuling$(echo .)org \
--cc=mpe@ellerman$(echo .)id.au \
--cc=paulus@samba$(echo .)org \
--cc=scottwood@freescale$(echo .)com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox