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| author | Nicholas Piggin <npiggin@gmail.com> | 2022-09-02 11:53:13 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-09-04 15:39:59 +0300 |
| commit | a8933c8d55c37f4d5eb617b4bdb72b8888b88681 (patch) | |
| tree | 68767e46155e503ec7ae4a12c9e15999df5fc294 /arch/powerpc/include | |
| parent | 501fe299826ead2cfa2046b5c244e36de254ec6a (diff) | |
| download | linux-a8933c8d55c37f4d5eb617b4bdb72b8888b88681.tar.xz | |
powerpc/pseries: Add wait interval counter definitions to struct lppaca
The hypervisor exposes accumulated partition scheduling interval times
in the VPA (lppaca). These can be used to implement a simple stolen time
in the guest without complex and costly dtl scanning.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Link: https://lore.kernel.org/r/20220902085316.2071519-2-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/lppaca.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/lppaca.h b/arch/powerpc/include/asm/lppaca.h index c390ec377bae..34d44cb17c87 100644 --- a/arch/powerpc/include/asm/lppaca.h +++ b/arch/powerpc/include/asm/lppaca.h @@ -104,14 +104,18 @@ struct lppaca { volatile __be32 dispersion_count; /* dispatch changed physical cpu */ volatile __be64 cmo_faults; /* CMO page fault count */ volatile __be64 cmo_fault_time; /* CMO page fault time */ - u8 reserved10[104]; + u8 reserved10[64]; /* [S]PURR expropriated/donated */ + volatile __be64 enqueue_dispatch_tb; /* Total TB enqueue->dispatch */ + volatile __be64 ready_enqueue_tb; /* Total TB ready->enqueue */ + volatile __be64 wait_ready_tb; /* Total TB wait->ready */ + u8 reserved11[16]; /* cacheline 4-5 */ __be32 page_ins; /* CMO Hint - # page ins by OS */ - u8 reserved11[148]; + u8 reserved12[148]; volatile __be64 dtl_idx; /* Dispatch Trace Log head index */ - u8 reserved12[96]; + u8 reserved13[96]; } ____cacheline_aligned; #define lppaca_of(cpu) (*paca_ptrs[cpu]->lppaca_ptr) |