diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2016-05-17 08:33:46 +0200 |
|---|---|---|
| committer | Scott Wood <oss@buserror.net> | 2016-07-09 01:43:50 -0500 |
| commit | c223c90386bc2306510e0ceacd768a0123ff2a2f (patch) | |
| tree | 520a7bc88a7e36bbd0615cc5a035337a36729fb8 /arch/powerpc/kernel/entry_32.S | |
| parent | 1afbf61750364864adf6a17818c5bbbea4dea531 (diff) | |
| download | lwn-c223c90386bc2306510e0ceacd768a0123ff2a2f.tar.gz lwn-c223c90386bc2306510e0ceacd768a0123ff2a2f.zip | |
powerpc32: provide VIRT_CPU_ACCOUNTING
This patch provides VIRT_CPU_ACCOUTING to PPC32 architecture.
PPC32 doesn't have the PACA structure, so we use the task_info
structure to store the accounting data.
In order to reuse on PPC32 the PPC64 functions, all u64 data has
been replaced by 'unsigned long' so that it is u32 on PPC32 and
u64 on PPC64
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'arch/powerpc/kernel/entry_32.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 2405631e91a2..9899032230b4 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -175,6 +175,12 @@ transfer_to_handler: addi r12,r12,-1 stw r12,4(r11) #endif +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE + CURRENT_THREAD_INFO(r9, r1) + tophys(r9, r9) + ACCOUNT_CPU_USER_ENTRY(r9, r11, r12) +#endif + b 3f 2: /* if from kernel, check interrupted DOZE/NAP mode and @@ -398,6 +404,13 @@ BEGIN_FTR_SECTION lwarx r7,0,r1 END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX) stwcx. r0,0,r1 /* to clear the reservation */ +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE + andi. r4,r8,MSR_PR + beq 3f + CURRENT_THREAD_INFO(r4, r1) + ACCOUNT_CPU_USER_EXIT(r4, r5, r7) +3: +#endif lwz r4,_LINK(r1) lwz r5,_CCR(r1) mtlr r4 @@ -769,6 +782,10 @@ restore_user: andis. r10,r0,DBCR0_IDM@h bnel- load_dbcr0 #endif +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE + CURRENT_THREAD_INFO(r9, r1) + ACCOUNT_CPU_USER_EXIT(r9, r10, r11) +#endif b restore |