if firmware-stop-supported property is present.
Earlier part of this patch was posted in this series :
https://lkml.org/lkml/2020/3/4/589
Signed-off-by: Abhishek Goel
Signed-off-by: Pratik Rajesh Sampat
---
v1->v2 : Combined patch 2 and 3 from previous iteration and rebased it.
arch/powe
Commit 1961acad2f88559c2cdd2ef67c58c3627f1f6e54 removes usage of
function "validate_dt_prop_sizes". This patch removes this unused
function.
Signed-off-by: Abhishek Goel
---
drivers/cpuidle/cpuidle-powernv.c | 14 --
1 file changed, 14 deletions(-)
diff --git a/drive
, are then handled in opal,
from where we return successfully back to kernel.
Signed-off-by: Abhishek Goel
---
v1->v2 : Rebased the patch on Nick's Opal V4 OS patchset
arch/powerpc/include/asm/opal-api.h| 4 +++-
arch/powerpc/include/asm/opal.h| 1 +
arch/powerpc/p
if firmware-stop-supported property is present.
Earlier this patch was posted as part of this series :
https://lkml.org/lkml/2020/3/4/589
Signed-off-by: Pratik Rajesh Sampat
Signed-off-by: Abhishek Goel
---
v1->v2: This patch is newly added in this series.
arch/powerpc/include/
l/2020/3/4/589
Signed-off-by: Pratik Rajesh Sampat
Signed-off-by: Abhishek Goel
---
v1->v2: This patch is newly added in this series.
arch/powerpc/include/asm/processor.h | 17 +
arch/powerpc/kernel/dt_cpu_ftrs.c | 5 +
arch/powerpc/platforms/powern
/1245275/
Signed-off-by: Abhishek Goel
Signed-off-by: Nicholas Piggin
---
v1->v2 : No change in this patch.
arch/powerpc/include/asm/opal-api.h| 8 -
arch/powerpc/include/asm/opal.h| 3 ++
arch/powerpc/kernel/idle_book3s.S | 5 +++
arch/powerpc/platforms/powe
: Abhishek Goel
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/opal-api.h| 8 -
arch/powerpc/include/asm/opal.h| 3 ++
arch/powerpc/kernel/idle_book3s.S | 5 +++
arch/powerpc/platforms/powernv/idle.c | 37 ++
arch/powerpc
idle path.
We also use the computed timeout to get timeout for snooze, thus getting
rid of get_snooze_timeout for snooze loop.
Signed-off-by: Abhishek Goel
---
drivers/cpuidle/cpuidle-powernv.c | 35 +++
include/linux/cpuidle.h | 1 +
2 files changed, 13
: Abhishek Goel
---
drivers/cpuidle/sysfs.c | 15 ++-
include/linux/cpuidle.h | 3 +++
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index 2bb2683b4..6c9bf2f7b 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle
essentially train the
governor to select a deeper state for that cpu, as the timer here
corresponds to the next available cpuidle state residency. Thus, cpu will
eventually end up in the deepest possible state.
Signed-off-by: Abhishek Goel
---
Auto-promotion
v1 : started as auto promotion logic for
tches that was found out in recent experiments.
No change in patch 2 and 3.
Abhishek Goel (3):
cpuidle-powernv : forced wakeup for stop states
cpuidle : Add callback whenever a state usage is enabled/disabled
cpuidle-powernv : Recompute the idle-state timeouts when state usage
Removed threshold latency which was being used to decide if a state
is cpuidle type or not. This decision can be taken using flags, as this
information has been encapsulated in the state->flags and being read
from idle device-tree.
Signed-off-by: Abhishek Goel
---
arch/powerpc/include/asm/o
bility of the code.
Stop handle corresponding to each state can be called directly since
state pointer is being passed now.
Signed-off-by: Abhishek Goel
---
arch/powerpc/include/asm/cpuidle.h| 8 +-
arch/powerpc/platforms/powernv/idle.c | 331 +++---
2 files changed,
info.
Signed-off-by: Abhishek Goel
---
arch/powerpc/include/asm/processor.h | 5 +-
arch/powerpc/platforms/powernv/idle.c | 50 ---
drivers/cpuidle/cpuidle-powernv.c | 69 +--
3 files changed, 55 insertions(+), 69 deletions(-)
diff --git a/arch/powerpc
residency-ns = <0x989680>;
psscr = <0x0 0x300374>;
...
};
...
stop11 {
...
compatible = "stop11,v1",
...
};
idle path.
We also use the computed timeout to get timeout for snooze, thus getting
rid of get_snooze_timeout for snooze loop.
Signed-off-by: Abhishek Goel
---
drivers/cpuidle/cpuidle-powernv.c | 35 +++
include/linux/cpuidle.h | 1 +
2 files changed, 13
-by: Abhishek Goel
---
drivers/cpuidle/sysfs.c | 15 ++-
include/linux/cpuidle.h | 4
2 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index eb20adb5de23..141671a53967 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers
essentially train the
governor to select a deeper state for that cpu, as the timer here
corresponds to the next available cpuidle state residency. Thus, cpu will
eventually end up in the deepest possible state.
Signed-off-by: Abhishek Goel
---
Auto-promotion
v1 : started as auto promotion logic for
ame of set/reset decrementer function.
Handled irq work pending in try_set_dec_before_idle.
No change in patch 2 and 3.
Abhishek Goel (3):
cpuidle-powernv : forced wakeup for stop states
cpuidle : Add callback whenever a state usage is enabled/disabled
cpuidle-powernv : Recomput
idle path.
We also use the computed timeout to get timeout for snooze, thus getting
rid of get_snooze_timeout for snooze loop.
Signed-off-by: Abhishek Goel
---
drivers/cpuidle/cpuidle-powernv.c | 35 +++
include/linux/cpuidle.h | 1 +
2 files changed, 13
-by: Abhishek Goel
---
drivers/cpuidle/sysfs.c | 15 ++-
include/linux/cpuidle.h | 4
2 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index eb20adb5d..141671a53 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers
essentially train the
governor to select a deeper state for that cpu, as the timer here
corresponds to the next available cpuidle state residency. Thus, cpu will
eventually end up in the deepest possible state.
Signed-off-by: Abhishek Goel
---
Auto-promotion
v1 : started as auto promotion logic for
whenever a
state is enbaled or disabled instead of computing everytime in fast
idle path.
3) Use disable callback to recompute timeout whenever state usage
is changed for a state. Also, cleaned up the get_snooze_timeout
function.
Abhishek Goel (3):
cpuid
essentially train the
governor to select a deeper state for that cpu, as the timer here
corresponds to the next available cpuidle state residency. Thus, cpu will
eventually end up in the deepest possible state.
Signed-off-by: Abhishek Goel
---
Auto-promotion
v1 : started as auto promotion logic for
ced wakeup instead of auto-promotion
v2 of forced-wakeup : Extended the forced wakeup logic for all states.
Setting the decrementer instead of queuing up a hrtimer to implement the
logic.
Abhishek Goel (1):
cpuidle-powernv : forced wakeup for stop states
drivers/cpuidle/cpuidle-powe
. Few such iterations will essentially train the governor to
select a deeper state for that cpu, as the timer here corresponds to the
next available cpuidle state residency. Cpu will be kicked out of the lite
state and end up in a non-lite state.
Signed-off-by: Abhishek Goel
---
arch/powerpc/include
down power consumption. We may extend this
model for other states in future.
Abhishek Goel (1):
cpuidle-powernv : forced wakeup for stop lite states
arch/powerpc/include/asm/opal-api.h | 1 +
drivers/cpuidle/cpuidle-powernv.c | 71 -
2 files changed, 71 insertions(+),
This patch sets up flags for the state which needs to be auto-promoted. On
POWERNV system, only lite states need to be autopromoted. We identify lite
states by those which do not lose user context. That information has been
used to set the flag for lite states.
Signed-off-by: Abhishek Goel
as
soon as possible.
Signed-off-by: Abhishek Goel
---
v1->v2 : Removed timeout_needed and rebased to current upstream kernel
drivers/cpuidle/cpuidle.c | 68 +-
drivers/cpuidle/governors/ladder.c | 3 +-
drivers/cpuidle/governors/menu.c |
-promotion only for stop0_lite, as it gives performance benefit(primary
reason) along with lowering down power consumption. We may extend this
model for other states in future.
Abhishek Goel (2):
cpuidle : auto-promotion for cpuidle states
cpuidle : Add auto-promotion flag to cpuidle flags
ar
This patch sets up flags for the state which needs to be auto-promoted.
For powernv systems, lite states do not even lose user context. That
information has been used to set the flag for lite states.
Signed-off-by: Abhishek Goel
---
arch/powerpc/include/asm/opal-api.h | 1 +
drivers/cpuidle
as
soon as possible.
Signed-off-by: Abhishek Goel
---
drivers/cpuidle/cpuidle.c | 79 +-
drivers/cpuidle/governors/ladder.c | 3 +-
drivers/cpuidle/governors/menu.c | 23 -
include/linux/cpuidle.h| 12 +++--
4 files changed, 111
case will occur in the scenario when no other shallow states are
enbaled, and only deep states are available for auto-promotion.
Abhishek Goel (2):
cpuidle : auto-promotion for cpuidle states
cpuidle : Add auto-promotion flag to cpuidle flags
arch/powerpc/include/asm/opal-api.h | 1 +
drivers
case will occur in the scenario when no other shallow states are
enbaled, and only deep states are available for auto-promotion.
Abhishek Goel (2):
cpuidle : auto-promotion for cpuidle states
cpuidle : Add auto-promotion flag to cpuidle flags
arch/powerpc/include/asm/opal-api.h | 1 +
drivers
This patch sets up flags for the state which needs to be auto-promoted.
For powernv systems, lite states do not even lose user context. That
information has been used to set the flag for lite states.
Signed-off-by: Abhishek Goel
---
arch/powerpc/include/asm/opal-api.h | 1 +
drivers/cpuidle
as
soon as possible.
Signed-off-by: Abhishek Goel
---
drivers/cpuidle/cpuidle.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 2406e2655..c4d1c1b38 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -584,11
-stop exit actions in OPAL. If a kernel knows about this
opal call, then just a firmware supporting newer hardware is required,
instead of waiting for kernel updates.
Signed-off-by: Abhishek Goel
---
Link to the Skiboot patch corresponding to this patch:
http://patchwork.ozlabs.org/patch/947568
"cpupower monitor -l" or "cpupower idle-info".
Signed-off-by: Abhishek Goel
---
The skiboot patch which adds description for idle states in device tree
can be found here: https://patchwork.ozlabs.org/patch/924879/
drivers/cpuidle/cpuidle-powernv.c | 19 ++
l" or "cpupower idle-info".
Signed-off-by: Abhishek Goel
---
The skiboot patch which adds description for idle states in device tree
can be found here: https://patchwork.ozlabs.org/patch/921637/
drivers/cpuidle/cpuidle-powernv.c | 17 +
include/linux/cpuidle.h
y.
Signed-off-by: Abhishek Goel
---
Skiboot patch required for the corresponding device-tree changes have been
posted here : http://patchwork.ozlabs.org/patch/862256/
drivers/cpufreq/powernv-cpufreq.c | 104 ++
1 file changed, 95 insertions(+), 9 deletion
y.
Signed-off-by: Abhishek Goel
---
drivers/cpufreq/powernv-cpufreq.c | 110 ++
1 file changed, 100 insertions(+), 10 deletions(-)
diff --git a/drivers/cpufreq/powernv-cpufreq.c
b/drivers/cpufreq/powernv-cpufreq.c
index b6d7c4c..fd642bc 100644
--- a/drive
y.
Signed-off-by: Abhishek Goel
---
drivers/cpufreq/powernv-cpufreq.c | 95 +++
1 file changed, 87 insertions(+), 8 deletions(-)
diff --git a/drivers/cpufreq/powernv-cpufreq.c
b/drivers/cpufreq/powernv-cpufreq.c
index b6d7c4c..9384110 100644
--- a/drive
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