diff options
| author | Anton Blanchard <anton@samba.org> | 2007-01-08 18:43:02 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-01-09 09:03:03 +0300 |
| commit | dc40127ca5c6e1da48d2b5f9d0c65b5795faac12 (patch) | |
| tree | 7d57b9a53adc8f4416380b126108d1e458a8e20c /arch/powerpc/platforms/pseries/hvCall.S | |
| parent | ab87e8dc88a7cae341c403547cea6b022f5ac023 (diff) | |
| download | linux-dc40127ca5c6e1da48d2b5f9d0c65b5795faac12.tar.xz | |
[POWERPC] Fix bugs in the hypervisor call stats code
There were a few issues with the HCALL_STATS code:
- PURR cpu feature checks were backwards
- We iterated one entry off the end of the hcall_stats array
- Remove dead update_hcall_stats() function prototype
I noticed one thing while debugging, and that is we call H_ENTER (to set
up the MMU hashtable in early init) before we have done the cpu fixups.
This means we will execute the PURR SPR reads even on a CPU that isnt
capable of it. I wonder if we can move the CPU feature fixups earlier.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/hvCall.S')
| -rw-r--r-- | arch/powerpc/platforms/pseries/hvCall.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S index 527da445aaa5..5c7e38789897 100644 --- a/arch/powerpc/platforms/pseries/hvCall.S +++ b/arch/powerpc/platforms/pseries/hvCall.S @@ -26,7 +26,7 @@ BEGIN_FTR_SECTION; \ mfspr r0,SPRN_PURR; /* get PURR and */ \ std r0,STK_PARM(r6)(r1); /* save for later */ \ -END_FTR_SECTION_IFCLR(CPU_FTR_PURR); +END_FTR_SECTION_IFSET(CPU_FTR_PURR); /* * postcall is performed immediately before function return which @@ -43,7 +43,7 @@ BEGIN_FTR_SECTION; \ mfspr r8,SPRN_PURR; /* PURR after */ \ ld r6,STK_PARM(r6)(r1); /* PURR before */ \ subf r6,r6,r8; /* delta */ \ -END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \ +END_FTR_SECTION_IFSET(CPU_FTR_PURR); \ ld r5,STK_PARM(r5)(r1); /* timebase before */ \ subf r5,r5,r7; /* time delta */ \ \ @@ -66,7 +66,7 @@ BEGIN_FTR_SECTION; \ ld r7,HCALL_STAT_PURR(r4); /* PURR */ \ add r7,r7,r6; \ std r7,HCALL_STAT_PURR(r4); \ -END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \ +END_FTR_SECTION_IFSET(CPU_FTR_PURR); \ 1: #else #define HCALL_INST_PRECALL |