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| author | Madhavan Srinivasan <maddy@linux.vnet.ibm.com> | 2017-07-19 00:36:32 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-24 16:00:22 +0300 |
| commit | 28a5db0061014c8afbbb98560cf420c29bc4d8e1 (patch) | |
| tree | c64d4825954a9a0e0696f25dbace9fd4f4fd051d /arch/powerpc/include/asm/opal.h | |
| parent | 7e7dc66adcf490a619bc3c7763a8cebadfba73e3 (diff) | |
| download | linux-28a5db0061014c8afbbb98560cf420c29bc4d8e1.tar.xz | |
powerpc/powernv: Add IMC OPAL APIs
In-Memory Collection (IMC) counters are performance monitoring
infrastructure. These counters need special sequence of SCOMs to
init/start/stop which is handled by OPAL. And OPAL provides three APIs
to init and control these IMC engines.
OPAL API documentation:
https://github.com/open-power/skiboot/blob/master/doc/opal-api/opal-imc-counters.rst
Patch updates the kernel side powernv platform code to support the new
OPAL APIs
Signed-off-by: Hemant Kumar <hemant@linux.vnet.ibm.com>
Signed-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/opal.h')
| -rw-r--r-- | arch/powerpc/include/asm/opal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 588fb1c23af9..6b8513c3ad40 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -268,6 +268,11 @@ int64_t opal_xive_free_irq(uint32_t girq); int64_t opal_xive_sync(uint32_t type, uint32_t id); int64_t opal_xive_dump(uint32_t type, uint32_t id); +int64_t opal_imc_counters_init(uint32_t type, uint64_t address, + uint64_t cpu_pir); +int64_t opal_imc_counters_start(uint32_t type, uint64_t cpu_pir); +int64_t opal_imc_counters_stop(uint32_t type, uint64_t cpu_pir); + /* Internal functions */ extern int early_init_dt_scan_opal(unsigned long node, const char *uname, int depth, void *data); |