AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

powerpc/perf: Add hv_gpci interface header

Browse Source 
"H_GetPerformanceCounterInfo" (refered to as hv_gpci or just gpci from
here on) is an interface to retrieve specific performance counters and
other data from the hypervisor. All outputs have a fixed format. This
header only describes the portions of the interface that we plan on
using in linux at this time.

Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Cody P Schafer 2014-03-14 16:00:37 +11:00 committed by Benjamin Herrenschmidt
parent 827f798ac1
commit a67f144739
1 changed files with 73 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
arch/powerpc/perf/hv-gpci.h Normal file
View File

@ -0,0 +1,73 @@
#ifndef LINUX_POWERPC_PERF_HV_GPCI_H_
#define LINUX_POWERPC_PERF_HV_GPCI_H_
#include <linux/types.h>
/* From the document "H_GetPerformanceCounterInfo Interface" v1.07 */
/* H_GET_PERF_COUNTER_INFO argument */
struct hv_get_perf_counter_info_params {
__be32 counter_request; /* I */
__be32 starting_index; /* IO */
__be16 secondary_index; /* IO */
__be16 returned_values; /* O */
__be32 detail_rc; /* O, only needed when called via *_norets() */
/*
* O, size each of counter_value element in bytes, only set for version
* >= 0x3
*/
__be16 cv_element_size;
/* I, 0 (zero) for versions < 0x3 */
__u8 counter_info_version_in;
/* O, 0 (zero) if version < 0x3. Must be set to 0 when making hcall */
__u8 counter_info_version_out;
__u8 reserved[0xC];
__u8 counter_value[];
} __packed;
/*
* counter info version => fw version/reference (spec version)
*
* 8 => power8 (1.07)
* [7 is skipped by spec 1.07]
* 6 => TLBIE (1.07)
* 5 => v7r7m0.phyp (1.05)
* [4 skipped]
* 3 => v7r6m0.phyp (?)
* [1,2 skipped]
* 0 => v7r{2,3,4}m0.phyp (?)
*/
#define COUNTER_INFO_VERSION_CURRENT 0x8
/*
* These determine the counter_value[] layout and the meaning of starting_index
* and secondary_index.
*
* Unless otherwise noted, @secondary_index is unused and ignored.
*/
enum counter_info_requests {
/* GENERAL */
/* @starting_index: must be -1 (to refer to the current partition)
*/
CIR_SYSTEM_PERFORMANCE_CAPABILITIES = 0X40,
};
struct cv_system_performance_capabilities {
/* If != 0, allowed to collect data from other partitions */
__u8 perf_collect_privileged;
/* These following are only valid if counter_info_version >= 0x3 */
#define CV_CM_GA (1 << 7)
#define CV_CM_EXPANDED (1 << 6)
#define CV_CM_LAB (1 << 5)
/* remaining bits are reserved */
__u8 capability_mask;
__u8 reserved[0xE];
} __packed;
#endif