-----Original Message-----
From: lng-odp [mailto:lng-odp-boun...@lists.linaro.org] On Behalf Of EXT
Maxim Uvarov
Sent: Tuesday, December 29, 2015 3:13 PM
To: lng-odp@lists.linaro.org
Subject: Re: [lng-odp] [PATCH v3 API-NEXT 00/11] Separate CPU info codes
into their platform files
so what is summary for that api?
odp_cpu_hz_current()
odp_cpu_hz()
very unstable on platforms like my x86 laptop. Example:
cat /proc/cpuinfo |grep "cpu MHz"
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 2501.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 800.000
cat /proc/cpuinfo |grep "cpu MHz"
cpu MHz : 2501.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 800.000
cpu MHz : 1500.000
And each time there are different values. On busy loop it can go to top
3Ghz speed and later
lower frequency due to overheating.
As I understand from current patches is api call just parses cpuinfo.
That might be not enough
due to it's not clear how to use that values.
Maxim.
On 12/29/2015 13:31, hongbo.zh...@linaro.org wrote:
From: Hongbo Zhang <hongbo.zh...@linaro.org>
v2->v3 changes:
use "api: cpu:" tag in patch 8/11 title instead of "linux-generic:
sysinfo"
v1->v2 changes:
- don't create arch/arm/ since there isn't implementation now, use
arch/linux
as default choice
- create symlink to arch/linux/odp_cpu_cycles.c for powerpc, if absent
this
arch cannot be compiled
- add some clean-ups patches 8~11, these patches are against the
previous ones
so send them together for better review and merge.
v1 notes:
This patch set separates the CPU info codes into their own platform
sepcific
files.
It is common sence that the top general layer call an uniform interface
to
initialize some plarform specific data structures, and this uniform
interface
is implemented in their own platform specific files.
This patch set makes it.
Hongbo Zhang (11):
linux-generic: sysinfo: move cpu_arch_str to odp_system_info_t
linux-generic: sysinfo: use uniform call odp_sysinfo_parser
linux-generic: sysinfo: rename odp_cpu_hz_current with odp_ prefix
linux-generic: sysinfo: move x86 system info codes to its plarform
file
linux-generic: sysinfo: move MIPS system info codes to its plarform
file
linux-generic: sysinfo: move ARM system info codes to default arch
file
linux-generic: sysinfo: move PowerPC system info codes to its
plarform
file
api: cpu: make frequency API return 0 on failure
linux-generic: sysinfo: set values for cpu_arch_str
linux-generic: sysinfo: apply per-CPU implementation to MIPS
linux-generic: sysinfo: apply per-CPU implementation to PowerPC
configure.ac | 1 +
include/odp/api/cpu.h | 4 +
platform/linux-generic/Makefile.am | 10 +-
.../linux-generic/arch/linux/odp_sysinfo_parse.c | 20 ++
.../linux-generic/arch/mips64/odp_sysinfo_parse.c | 63 ++++++
.../linux-generic/arch/powerpc/odp_cpu_cycles.c | 1 +
.../linux-generic/arch/powerpc/odp_sysinfo_parse.c | 63 ++++++
.../linux-generic/arch/x86/odp_sysinfo_parse.c | 72 +++++++
platform/linux-generic/include/odp_cpu_internal.h | 4 +
platform/linux-generic/include/odp_internal.h | 1 +
platform/linux-generic/odp_system_info.c | 217 +------------
--------
11 files changed, 242 insertions(+), 214 deletions(-)
create mode 100644 platform/linux-
generic/arch/linux/odp_sysinfo_parse.c
create mode 100644 platform/linux-
generic/arch/mips64/odp_sysinfo_parse.c
create mode 120000 platform/linux-
generic/arch/powerpc/odp_cpu_cycles.c
create mode 100644 platform/linux-
generic/arch/powerpc/odp_sysinfo_parse.c
create mode 100644 platform/linux-generic/arch/x86/odp_sysinfo_parse.c
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