/0x1c0
system_call_common+0xf0/0x278
Reported-by: Shivaprasad G Bhat
Signed-off-by: Ritesh Harjani
Signed-off-by: Anju T Sudhakar
---
fs/iomap/buffered-io.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index bcfc28
: Anju T Sudhakar
---
arch/powerpc/include/asm/perf_event_server.h | 5 +++
arch/powerpc/include/uapi/asm/perf_regs.h | 13 +++-
arch/powerpc/perf/core-book3s.c | 1 +
arch/powerpc/perf/perf_regs.c | 29 ++--
arch/powerpc/perf/power9-pmu.c
.
Currently powerpc architecture is not having support for auxtrace. So as
a workaround for this issue, set NO_AUXTRACE for powerpc.
Signed-off-by: Anju T Sudhakar
---
tools/perf/arch/powerpc/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/arch/powerpc/Makefile b/tools/perf/arch
for this issue, patch 1/2 set
NO_AUXTRACE for powerpc. (Any other solutions are welcome.)
Patch 2/2 also add extended regs to sample_reg_mask in the tool side to use
with `-I?` option.
Anju T Sudhakar (2):
tools/perf: set no_auxtrace for powerpc
powerpc/perf: Add support for outputting extended
The following commit has been merged into the perf/urgent branch of tip:
Commit-ID: 8067b3da970baa12e6045400fdf009673b8dd3c2
Gitweb:
https://git.kernel.org/tip/8067b3da970baa12e6045400fdf009673b8dd3c2
Author:Anju T Sudhakar
AuthorDate:Thu, 18 Jul 2019 23:47:47 +05:30
The following commit has been merged into the perf/urgent branch of tip:
Commit-ID: 2bff2b828502b5e5d5ea5a52643d3542053df03f
Gitweb:
https://git.kernel.org/tip/2bff2b828502b5e5d5ea5a52643d3542053df03f
Author:Anju T Sudhakar
AuthorDate:Thu, 18 Jul 2019 23:47:49 +05:30
The following commit has been merged into the perf/urgent branch of tip:
Commit-ID: 124eb5f82bf9395419b20205c4dcc1b8fcda7f29
Gitweb:
https://git.kernel.org/tip/124eb5f82bf9395419b20205c4dcc1b8fcda7f29
Author:Anju T Sudhakar
AuthorDate:Thu, 18 Jul 2019 23:47:48 +05:30
Use 'trace_imc/trace_cycles' as the default event for 'perf kvm record'
in powerpc.
Signed-off-by: Anju T Sudhakar
---
tools/perf/arch/powerpc/util/kvm-stat.c | 15 +++
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/tools/perf/arch/powerpc/util
host.
Patch adds a function to pick an arch specific event for 'perf kvm record',
instead of selecting 'cycles' as a default event for all architectures.
For powerpc this function checks for any user specified event, and if there
isn't any it returns invalid instead of proceedin
.
Signed-off-by: Anju T Sudhakar
---
tools/perf/builtin-kvm.c | 2 +-
tools/perf/util/kvm-stat.h | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index b33c83489120..5d2b34d290a3 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools
On 6/28/19 9:04 AM, Qian Cai wrote:
On Jun 27, 2019, at 11:12 PM, Michael Ellerman wrote:
Qian Cai writes:
Read of debugfs imc_cmd file for a memory-less node will trigger a crash below
on this power9 machine which has the following NUMA layout.
What type of machine is it?
description:
Use 'trace_imc/trace_cycles' as the default event for 'perf kvm record'
in powerpc.
Signed-off-by: Anju T Sudhakar
---
tools/perf/arch/powerpc/util/kvm-stat.c | 15 +++
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/tools/perf/arch/powerpc/util
host.
Patch adds a function to pick an arch specific event for 'perf kvm record',
instead of selecting 'cycles' as a default event for all architectures.
For powerpc this function checks for any user specified event, and if there
isn't any it returns invalid instead of proceedin
host.
Patch adds a function to pick an arch specific event for 'perf kvm record',
instead of selecting 'cycles' as a default event for all architectures.
For powerpc this function checks for any user specified event, and if there
isn't any it returns invalid instead of proceedin
Use 'trace_imc/trace_cycles' as the default event for 'perf kvm record'
in powerpc.
Signed-off-by: Anju T Sudhakar
---
tools/perf/arch/powerpc/util/kvm-stat.c | 15 +++
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/tools/perf/arch/powerpc/util
On 4/16/19 3:14 PM, Anju T Sudhakar wrote:
Hi,
Kindly ignore this series, since patch 5/5 in this series doesn't
incorporate the event-format change
that I've done in v4 of this series.
Apologies for the inconvenience. I will post the updated v5 soon.
s/v5/v4
Thanks,
Anj
From: Madhavan Srinivasan
Add code to restrict user access to thread_imc pmu since
some event report privilege level information.
Fixes: f74c89bd80fb3 ('powerpc/perf: Add thread IMC PMU support')
Signed-off-by: Madhavan Srinivasan
Signed-off-by: Anju T Sudhakar
---
arch/powerp
03
803803803803803 1306803
803 Performance monitoring interrupts
The PMI interrupts count remains the same.
Changelog:
>From v2 -> v3
--
* Redefined
Add PMU functions to support trace-imc and define the format for
trace-imc events.
Signed-off-by: Anju T Sudhakar
Reviewed-by: Madhavan Srinivasan
---
arch/powerpc/perf/imc-pmu.c | 197 +++-
1 file changed, 196 insertions(+), 1 deletion(-)
diff --git a/arch
Patch detects trace-imc events, does memory initilizations for each online
cpu, and registers cpuhotplug call-backs.
Signed-off-by: Anju T Sudhakar
Reviewed-by: Madhavan Srinivasan
---
arch/powerpc/perf/imc-pmu.c | 91 +++
arch/powerpc/platforms/powernv/opal
'. So to
accommodate trace-mode of IMC, reposition setting of ldbar for thread-imc
to thread_imc_event_add(). Also reset ldbar at thread_imc_event_del().
Signed-off-by: Anju T Sudhakar
Reviewed-by: Madhavan Srinivasan
---
arch/powerpc/perf/imc-pmu.c | 28 +---
1 fi
Add the macros needed for IMC (In-Memory Collection Counters) trace-mode
and data structure to hold the trace-imc record data.
Also, add the new type "OPAL_IMC_COUNTERS_TRACE" in 'opal-api.h', since
there is a new switch case added in the opal-calls for IMC.
Signed-off
Add the macros needed for IMC (In-Memory Collection Counters) trace-mode
and data structure to hold the trace-imc record data.
Also, add the new type "OPAL_IMC_COUNTERS_TRACE" in 'opal-api.h', since
there is a new switch case added in the opal-calls for IMC.
Signed-off
From: Madhavan Srinivasan
Add code to restrict user access to thread_imc pmu since
some event report privilege level information.
Fixes: f74c89bd80fb3 ('powerpc/perf: Add thread IMC PMU support')
Signed-off-by: Madhavan Srinivasan
Signed-off-by: Anju T Sudhakar
---
arch/powerp
'. So to
accommodate trace-mode of IMC, reposition setting of ldbar for thread-imc
to thread_imc_event_add(). Also reset ldbar at thread_imc_event_del().
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/perf/imc-pmu.c | 28 +---
1 file changed, 17 insertions(+), 11
Patch detects trace-imc events, does memory initilizations for each online
cpu, and registers cpuhotplug call-backs.
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/perf/imc-pmu.c | 91 +++
arch/powerpc/platforms/powernv/opal-imc.c | 3 +
include/linux
Add PMU functions to support trace-imc.
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/perf/imc-pmu.c | 175
1 file changed, 175 insertions(+)
diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c
index 1f09265c8fb0..32ff0e449fca 100644
03
803803803803803 1306803
803 Performance monitoring interrupts
The PMI interrupts count remains the same.
Changelog:
>From v1 -> v2
--
* Added priv
Hi,
On Tuesday 06 March 2018 04:35 PM, Michael Ellerman wrote:
Anju T Sudhakar writes:
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 4437c70..caefb64 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -757,6 +759,9 @@ static int
.
https://patchwork.ozlabs.org/patch/844047/ (v2)
Signed-off-by: Anju T Sudhakar
Reviewed-by: Madhavan Srinivasan
---
arch/powerpc/perf/imc-pmu.c | 14 ++
1 file changed, 14 insertions(+)
diff --git a
root@:/sys/kernel/debug/imc# ls
imc_cmd_0 imc_cmd_8 imc_mode_0 imc_mode_8
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/
Hi,
Kindly ignore this version
Thanks,
Anju
On Monday 13 November 2017 11:06 AM, Anju T Sudhakar wrote:
In memory Collection (IMC) counter pmu driver controls the ucode's execution
state. At the system boot, IMC perf driver pause the ucode. Ucode state is
changed to "running"
root@:/sys/kernel/debug/imc# ls
imc_cmd_0 imc_cmd_8 imc_mode_0 imc_mode_8
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/
or not.
And bit 1 indicates the mode (if 0-Accumulation Mode/if 1-Trace Mode).
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/kernel/sysfs.c | 8
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 4437c70..caefb64 100644
--- a
Hi,
Kindly ignore this patch, I send a wrong version. Will send out the
right one.
Thanks,
Anju
On Thursday 09 November 2017 05:43 PM, Anju T Sudhakar wrote:
Add ldbar spr to sysfs. The spr holds thread level In-Memory Collection (IMC)
counter configuration data. Exposing this will help
or not.
And bit 1 indicates the mode (if 0-Accumulation Mode/if 1-Trace Mode).
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/kernel/sysfs.c | 8
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 4437c70..f8caee0 100644
--- a
, microcode could support more nest units (max of 64
nest units). Hence fix the value for the macro.
Fixes:8f95faaac56c1 ('powerpc/powernv: Detect and create IMC device')
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/include/asm/imc-pmu.h | 2 +-
1 file changed, 1 insertion(+), 1 deletio
Hi mpe,
On Wednesday 01 November 2017 06:20 AM, Michael Ellerman wrote:
Anju T Sudhakar writes:
Add ldbar spr to sysfs. The spr will hold thread level In-Memory Collection
(IMC)
counter configuration data.
This is missing any justification for why we would want to expose this,
and in
re-imc counters are not even initialized. Thus creating the
above stack dump.
Add a check to see if core-imc counters are enabled or not in the cpuhotplug
offline path before migrating the context to handle this failing scenario.
Signed-off-by: Madhavan Srinivasan
Signed-off-by: Anju T Sudhakar
---
Hi,
On Wednesday 01 November 2017 06:22 AM, Michael Ellerman wrote:
Anju T Sudhakar writes:
Call trace observed during boot:
What's the actual oops?
The actual oops is:
[0.750749] PCI: CLS 0 bytes, default 128
[0.750855] Unpacking initramfs...
[1.570445] Freeing i
Add ldbar spr to sysfs. The spr will hold thread level In-Memory Collection
(IMC)
counter configuration data.
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/kernel/sysfs.c | 8
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
Factor out memory freeing part for attribute elements from
imc_common_mem_free(),
also handle the memory leak for pmu->events in update_events_in_group().
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/perf/imc-pmu.c | 24
1 file changed, 16 insertions(+)
Change the data type for the variable 'ncpu' in ppc_core_imc_cpu_offline(),
since cpumask_any_but() returns an 'int' value.
Signed-off-by: Anju T Sudhakar
Reported-by: David Binderman
---
arch/powerpc/perf/imc-pmu.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-
: Anju T Sudhakar
---
arch/powerpc/perf/imc-pmu.c | 15 +++
1 file changed, 15 insertions(+)
diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c
index 8812624..08139f9 100644
--- a/arch/powerpc/perf/imc-pmu.c
+++ b/arch/powerpc/perf/imc-pmu.c
@@ -30,6 +30,7 @@ static
Add ldbar spr to sysfs. The spr will hold thread level In-Memory Collection
(IMC)
counter configuration data.
Signed-off-by: Anju T Sudhakar
Acked-by: Madhavan Srinivasan
---
arch/powerpc/kernel/sysfs.c | 8
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/kernel/sysfs.c b
prior to dereferencing the attribute
element,
to handle the failing case gracefully.
Signed-off-by: Anju T Sudhakar
Reported-by: Pridhiviraj Paidipeddi
---
arch/powerpc/perf/imc-pmu.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc
memory from a node which has no memory behind it. Add a ___GFP_NOWARN
flag in allocation request as a fix.
Signed-off-by: Anju T Sudhakar
Reported-by: Michael Ellerman
Reported-by: Venkat R.B
---
arch/powerpc/perf/imc-pmu.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff
Hi mpe, stewart,
On Wednesday 11 October 2017 01:55 AM, Stewart Smith wrote:
Michael Ellerman writes:
Anju T Sudhakar writes:
Add a kernel command line parameter option to disable In-Memory Collection
(IMC) counters and add documentation. This helps in debug.
I'd really rather we d
imc_common_cpuhp_mem_free() to handle
the failing case gracefully.
Signed-off-by: Anju T Sudhakar
Reported-by: Pridhiviraj Paidipeddi
---
arch/powerpc/perf/imc-pmu.c | 23 ---
1 file changed, 16 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/perf/imc-pmu.c b/arch
pu >= 0 && ncpu < nr_cpu_ids) {
but
unsigned int ncpu, core_id;
Suggest remove test.
Nice catch. Thanks for mentioning this. I will fix this.
Thanks,
Anju
Thanks.
Notifying the author would be more helpful:
$ git blame -L 599,599 arch/powerpc/perf/imc-pmu.c
39a846db1d574 (Anju T
Add a kernel command line parameter option to disable In-Memory Collection
(IMC) counters and add documentation. This helps in debug.
Signed-off-by: Anju T Sudhakar
Reviewed-By: Madhavan Srinivasan
---
Documentation/admin-guide/kernel-parameters.txt | 7 +
arch/powerpc/platforms/powernv
Hi Santosh,
On Thursday 05 October 2017 03:20 PM, Santosh Sivaraj wrote:
* Anju T Sudhakar wrote (on 2017-10-04 06:50:52
+):
Nest/core pmu units are enabled only when it is used. A reference count is
maintained for the events which uses the nest/core pmu units. Currently in
the ref count will not hit a negative value.
Signed-off-by: Anju T Sudhakar
---
arch/powerpc/perf/imc-pmu.c | 28
1 file changed, 28 insertions(+)
diff --
Hi mpe,
On Thursday 21 September 2017 10:04 AM, Michael Ellerman wrote:
Anju T Sudhakar writes:
Nest/core pmu units are enabled only when it is used. A reference count is
maintained for the events which uses the nest/core pmu units. Currently in
*_imc_counters_release function a WARN() is
overkill.
Signed-off-by: Anju T Sudhakar
Acked-by: Madhavan Srinivasan
---
arch/powerpc/perf/imc-pmu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c
index 9ccac86..4d523d0 100644
--- a/arch/powerpc/perf/imc-pmu.c
+++ b
kexec.
Signed-off-by: Hemant Kumar
Signed-off-by: Anju T Sudhakar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/includ
.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h | 11 +
arch/powerpc/include/asm/opal-api.h
CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE is added to the list of existing
states.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/perf/imc-pmu.c | 38 +-
include/linux/cpuhotplug.h | 1 +
2 files changed, 38 insertions(+), 1 deletion(-)
diff --git a
From: Madhavan Srinivasan
Create a new header file to add the data structures and
macros needed for In-Memory Collection (IMC) counter support.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h | 99
Code to create platform device for the IMC counters.
Paltform devices are created based on the IMC compatibility
string.
New Config flag "CONFIG_HV_PERF_IMC_CTRS" add to contain the
IMC counter changes.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by
Code to add support for detection of thread IMC events. It adds a new
domain IMC_DOMAIN_THREAD and it is determined with the help of the
"type" property in the imc device-tree.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
ar
cpus.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h| 4 +
arch/powerpc/perf/imc-pmu.c | 241 --
arch/powerpc/platforms/powernv/opal-imc.c | 2 +
3 files changed
ute and to
register imc pmus. Add a event_init function for nest_imc events.
Since, the IMC counters' data are periodically fed to a memory location,
the functions to read/update, start/stop, add/del can be generic and can
be used by all IMC PMU units.
Signed-off-by: Anju T Sudhakar
Signed-off-b
From: Madhavan Srinivasan
This patch adds support for detection of core IMC events along with the
Nest IMC events. It adds a new domain IMC_DOMAIN_CORE and its determined
with the help of the "type" property in the IMC device tree.
Signed-off-by: Anju T Sudhakar
Signed-off-by: He
that all events supported by this PMU
inherit the scale and unit properties of the PMU itself. For those
events, we need to set the common unit and scale values.
For failure to initialize any unit or any event, disable that unit and
continue setting up the rest of them.
Signed-off-by: Hemant Kum
ation) to IMC (In-Memory
Collection).
v1 -> v2 :
- Account for the cases where a PMU can have a common scale and unit
values for all its supported events (Patch 3/6).
- Fixed a Build error (for maple_defconfig) by enabling imc_pmu.o
only for CONFIG_PPC_POWERNV=y (Patch 4/6)
-
From: Madhavan Srinivasan
Create a new header file to add the data structures and
macros needed for In-Memory Collection (IMC) counter support.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h | 99
.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h | 1 +
arch/powerpc/include/asm/opal-api.h
kexec.
Signed-off-by: Hemant Kumar
Signed-off-by: Anju T Sudhakar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/includ
ff-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h| 4 +
arch/powerpc/perf/imc-pmu.c | 228 +-
arch/po
that all events supported by this PMU
inherit the scale and unit properties of the PMU itself. For those
events, we need to set the common unit and scale values.
For failure to initialize any unit or any event, disable that unit and
continue setting up the rest of them.
Signed-off-by: Hemant Kum
Code to create platform device for the IMC counters.
Paltform devices are created based on the IMC compatibility
string.
New Config flag "CONFIG_HV_PERF_IMC_CTRS" add to contain the
IMC counter changes.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by
CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE is added to the list of existing
states.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/perf/imc-pmu.c | 38 +-
include/linux/cpuhotplug.h | 1 +
2 files changed, 38 insertions(+), 1 deletion(-)
diff --git a
From: Madhavan Srinivasan
This patch adds support for detection of core IMC events along with the
Nest IMC events. It adds a new domain IMC_DOMAIN_CORE and its determined
with the help of the "type" property in the IMC device tree.
Signed-off-by: Anju T Sudhakar
Signed-off-by: He
Code to add support for detection of thread IMC events. It adds a new
domain IMC_DOMAIN_THREAD and it is determined with the help of the
"type" property in the imc device-tree.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
ar
ute and to
register imc pmus. Add a event_init function for nest_imc events.
Since, the IMC counters' data are periodically fed to a memory location,
the functions to read/update, start/stop, add/del can be generic and can
be used by all IMC PMU units.
Signed-off-by: Anju T Sudhakar
Signed-off-b
to IMC (In-Memory
Collection).
v1 -> v2 :
- Account for the cases where a PMU can have a common scale and unit
values for all its supported events (Patch 3/6).
On Wednesday 07 June 2017 11:14 AM, Anju T Sudhakar wrote:
Hi Thomas,
On Tuesday 06 June 2017 03:39 PM, Thomas Gleixner wrote:
On Mon, 5 Jun 2017, Anju T Sudhakar wrote:
+static void cleanup_all_core_imc_memory(struct imc_pmu *pmu_ptr)
+{
+struct imc_mem_info *ptr = pmu_ptr->mem_i
Hi Thomas,
On Tuesday 06 June 2017 03:39 PM, Thomas Gleixner wrote:
On Mon, 5 Jun 2017, Anju T Sudhakar wrote:
+static void cleanup_all_core_imc_memory(struct imc_pmu *pmu_ptr)
+{
+ struct imc_mem_info *ptr = pmu_ptr->mem_info;
+
+ if (!ptr)
+ return;
Tha
Hi Thomas,
Thank you for reviewing the patch.
On Tuesday 06 June 2017 02:09 PM, Thomas Gleixner wrote:
On Mon, 5 Jun 2017, Anju T Sudhakar wrote:
+/*
+ * nest_imc_stop : Does OPAL call to stop nest engine.
+ */
+static void nest_imc_stop(int *cpu_opal_rc)
+{
+ int rc;
+
+ rc
From: Madhavan Srinivasan
Create a new header file to add the data structures and
macros needed for In-Memory Collection (IMC) counter support.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h | 99
.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h | 3 +
arch/powerpc/include/asm/opal-api.h
CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE is added to the list of existing
states.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/perf/imc-pmu.c | 35 +--
include/linux/cpuhotplug.h | 1 +
2 files changed, 34 insertions(+), 2 deletions(-)
diff --git a
kexec.
Signed-off-by: Hemant Kumar
Signed-off-by: Anju T Sudhakar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/includ
with the help of the "type" property in the IMC device tree.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by
ff-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h| 5 +
arch/powerpc/perf/imc-pmu.c | 203 --
arch/powerpc/plat
ute and to
register imc pmus. Add a event_init function for nest_imc events.
Since, the IMC counters' data are periodically fed to a memory location,
the functions to read/update, start/stop, add/del can be generic and can
be used by all IMC PMU units.
Signed-off-by: Anju T Sudhakar
Signed-off-b
Code to add support for detection of thread IMC events. It adds a new
domain IMC_DOMAIN_THREAD and it is determined with the help of the
"type" property in the imc device-tree.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
ar
that all events supported by this PMU
inherit the scale and unit properties of the PMU itself. For those
events, we need to set the common unit and scale values.
For failure to initialize any unit or any event, disable that unit and
continue setting up the rest of them.
Signed-off-by: Hemant Kuma
Code to create platform device for the IMC counters.
Paltform devices are created based on the IMC compatibility
string.
New Config flag "CONFIG_HV_PERF_IMC_CTRS" add to contain the
IMC counter changes.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by
mc engine in cpuhot plug path
v3 -> v4 :
- Changed the events parser code to discover the PMU and events because
of the changed format of the IMC DTS file (Patch 3).
- Implemented the two TODOs to include core and thread IMC support with
this patchset (Patches 7 through 10).
- Changed t
On CPU hotplug, dying CPU is checked to see whether it is one of the
designated cpus, if yes, next online cpu from the same chip (for nest
units) is designated as new cpu to read counters. For this purpose, we
introduce a new state : CPUHP_AP_PERF_POWERPC_NEST_ONLINE.
Signed-off-by: Anju T
From: Hemant Kumar
Create a new header file to add the data structures and
macros needed for In-Memory Collection (IMC) counter support.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h | 95
designated as new cpu to read counters. For this purpose, we
introduce a new state : CPUHP_AP_PERF_POWERPC_NEST_ONLINE.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h | 4 +
arch/powerpc/include/asm
d-off-by: Anju T Sudhakar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h| 7 +
arch/powerpc/perf/imc-pmu.c | 380 +-
arch/powerpc/platforms/powernv/opal-imc.c | 7 +
include/linux/cpuhotplug.h| 1
Patch adds support for detection of thread IMC events. It adds a new
domain IMC_DOMAIN_THREAD and it is determined with the help of the
compatibility string "ibm,imc-counters-thread" based on the IMC device
tree.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by
From: Hemant Kumar
This patch adds support for detection of core IMC events along with the
Nest IMC events. It adds a new domain IMC_DOMAIN_CORE and its determined
with the help of the compatibility string "ibm,imc-counters-core" based
on the IMC device tree.
Signed-off-by: Anju
erent cpus.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/include/asm/imc-pmu.h| 5 +
arch/powerpc/perf/imc-pmu.c | 209 +-
arch/powerpc/platforms/powernv/opal-imc.c | 3 +
3
CPUHP_AP_PERF_POWERPC_THREADIMC_ONLINE is added to the list of existing
states.
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Anju T Sudhakar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/perf/imc-pmu.c | 32 +++-
include/linux/cpuhotplug.h | 1 +
2 files changed, 28 insertions
s done in subsequent patches).
Patch also adds a CONFIG_HV_PERF_IMC_CTRS for the IMC driver.
Signed-off-by: Anju T Sudhakar
Signed-off-by: Hemant Kumar
Signed-off-by: Madhavan Srinivasan
---
arch/powerpc/platforms/powernv/Kconfig| 10 +++
arch/powerpc/platforms/powernv/Makefile | 1 +
ar
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