PAPR v2.3 defines fields in the virtual processor area for a dispatch
trace log (DLT). Since we'd like to use the DLT, add the necessary
fields to struct lppaca.
Signed-off-by: Jeremy Kerr <j...@ozlabs.org>
---
arch/powerpc/include/asm/lppaca.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/lppaca.h
b/arch/powerpc/include/asm/lppaca.h
index b063121..68235f7 100644
--- a/arch/powerpc/include/asm/lppaca.h
+++ b/arch/powerpc/include/asm/lppaca.h
@@ -97,7 +97,7 @@ struct lppaca {
u64 saved_gpr4; // Saved GPR4 x28-x2F
u64 saved_gpr5; // Saved GPR5 x30-x37
- u8 reserved4; // Reserved x38-x38
+ u8 dtl_enable_mask; // Dispatch Trace Log mask x38-x38
u8 donate_dedicated_cpu; // Donate dedicated CPU cycles x39-x39
u8 fpregs_in_use; // FP regs in use x3A-x3A
u8 pmcregs_in_use; // PMC regs in use x3B-x3B
@@ -134,7 +134,9 @@ struct lppaca {
// CACHE_LINE_4-5 0x0180 - 0x027F Contains PMC interrupt data
//=============================================================================
u32 page_ins; // CMO Hint - # page ins by OS x00-x03
- u8 pmc_save_area[252]; // PMC interrupt Area x04-xFF
+ u8 reserved8[148]; // Reserved x04-x97
+ volatile u64 dtl_idx; // Dispatch Trace Log head idx x98-x9F
+ u8 reserved9[96]; // Reserved xA0-xFF
} __attribute__((__aligned__(0x400)));
extern struct lppaca lppaca[];
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