[tip:x86/cache] x86/intel_rdt/mba_sc: Feedback loop to dynamically update mem bandwidth

Commit-ID: de73f38f768021610bd305cf74ef3702fcf6a1eb Gitweb: https://git.kernel.org/tip/de73f38f768021610bd305cf74ef3702fcf6a1eb Author: Vikas Shivappa AuthorDate: Fri, 20 Apr 2018 15:36:21 -0700 Committer: Thomas Gleixner CommitDate: Sat, 19 May 2018 13:16:44 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt/mba_sc: Prepare for feedback loop

Commit-ID: ba0f26d8529c2dfc9aa6d9e8a338180737f8c1be Gitweb: https://git.kernel.org/tip/ba0f26d8529c2dfc9aa6d9e8a338180737f8c1be Author: Vikas Shivappa AuthorDate: Fri, 20 Apr 2018 15:36:20 -0700 Committer: Thomas Gleixner CommitDate: Sat, 19 May 2018 13:16:44 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt/mba_sc: Add schemata support

Commit-ID: 8205a078ba7819c23558e31af4b3bda04d9b3bae Gitweb: https://git.kernel.org/tip/8205a078ba7819c23558e31af4b3bda04d9b3bae Author: Vikas Shivappa AuthorDate: Fri, 20 Apr 2018 15:36:19 -0700 Committer: Thomas Gleixner CommitDate: Sat, 19 May 2018 13:16:44 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt/mba_sc: Enable/disable MBA software controller

Commit-ID: 19c635ab24a1e94a759e82bfb34554a6a0db215e Gitweb: https://git.kernel.org/tip/19c635ab24a1e94a759e82bfb34554a6a0db215e Author: Vikas Shivappa AuthorDate: Fri, 20 Apr 2018 15:36:17 -0700 Committer: Thomas Gleixner CommitDate: Sat, 19 May 2018 13:16:43 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt/mba_sc: Documentation for MBA software controller(mba_sc)

Commit-ID: d6c64a4f49fdea0ae79addc3282ae8eb8581bdfc Gitweb: https://git.kernel.org/tip/d6c64a4f49fdea0ae79addc3282ae8eb8581bdfc Author: Vikas Shivappa AuthorDate: Fri, 20 Apr 2018 15:36:16 -0700 Committer: Thomas Gleixner CommitDate: Sat, 19 May 2018 13:16:42 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt/mba_sc: Add initialization support

Commit-ID: 1bd2a63b4f0deefe745aa0fd969c07b2eb9ee99e Gitweb: https://git.kernel.org/tip/1bd2a63b4f0deefe745aa0fd969c07b2eb9ee99e Author: Vikas Shivappa AuthorDate: Fri, 20 Apr 2018 15:36:18 -0700 Committer: Thomas Gleixner CommitDate: Sat, 19 May 2018 13:16:43 +0200 x86/intel_rdt

[PATCH 3/6] x86/intel_rdt/mba_sc: Add initialization support

lot of factors like QPI link, number of memory channels, memory channel frequency, its width and memory speed, how many channels are configured and also if memory interleaving is enabled. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 37 ++

[PATCH V2 0/6] Memory bandwidth allocation software controller(mba_sc)

n the percentage values. The default value when mounted is max_u32. $ echo "L3:0=3;1=c\nMB:0=1024;1=500" > /sys/fs/resctrl/p0/schemata $ echo "L3:0=3;1=3\nMB:0=1024;1=500" > /sys/fs/resctrl/p1/schemata In the above example the tasks in "p1" and "p0" rdtgr

[PATCH 5/6] x86/intel_rdt/mba_sc: Prepare for feedback loop

l only be used by the feedback loop patch. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.h | 10 arch/x86/kernel/cpu/intel_rdt_monitor.c | 45 - 2 files changed, 49 insertions(+), 6 deletions(-) diff --git a/arch/x86/kernel/cpu

[PATCH 2/6] x86/intel_rdt/mba_sc: Enable/disable MBA software controller

pl2][mba_MBps]] /sys/fs/resctrl Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 8 arch/x86/kernel/cpu/intel_rdt.h | 3 +++ arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 30 ++ 3 files changed, 41 insertions(+) diff --git a

[PATCH 4/6] x86/intel_rdt/mba_sc: Add schemata support

d of being specified in percentage. We do not write the IA32_MBA_THRTL_MSRs when the schemata is updated as that is handled separately. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 2 +- arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 24 +++- 2 fil

[PATCH 1/6] x86/intel_rdt/mba_sc: Documentation for MBA software controller(mba_sc)

Add documentation about the feedback loop mechanism (MBA software controller) which lets the user specify the memory bandwidth allocation in MBps. This includes some changes to "schemata" formati with examples. Signed-off-by: Vikas Shivappa --- Documentation/x86/intel_rdt_u

[PATCH 6/6] x86/intel_rdt/mba_sc: Feedback loop to dynamically update mem bandwidth

in initial phases -> mba_sc kicks in and reduced bandwidth percentage values -> but after some it has mostly "L2 <-> L3" traffic. In this scenario mba_sc increases the bandwidth percentage when there is lesser memory traffic. Signed-off-by: Vikas Shivappa --- arch/x86/kern

[PATCH 3/6] x86/intel_rdt/mba_sc: Add initialization support

When MBA software controller is enabled, we need a per domain storage for user specified bandwidth in MB and the raw b/w percentage values which are programmed into the MSR. Add support for these data structures and initialization. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu

[PATCH 4/6] x86/intel_rdt/mba_sc: Add schemata support

in percentage values. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 10 +- arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 10 -- 2 files changed, 17 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/cpu/intel_rdt.c b/arch/x86/kernel/cpu/inte

[PATCH 5/6] x86/intel_rdt/mba_sc: Add counting for MBA software controller

d the delta b/w when the b/w MSR values change. We do this by taking the time stamp every time a the counter is read and then keeping a history of b/w. This will be used to support internal queries for the bandwidth in Megabytes. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c

[PATCH RFC 0/6] Memory b/w allocation software controller

/schemata $ echo "L3:0=3;1=3\nMB:0=1024;1=500" > /sys/fs/resctrl/p1/schemata In the above example the tasks in "p1" and "p0" rdtgroup would use a max b/w of 1024MBps on socket0 and 500MBps on socket1. Vikas Shivappa (6): x86/intel_rdt/mba_sc: Add documentation f

[PATCH 6/6] x86/intel_rdt/mba_sc: Add support to dynamically update the memory b/w

alues written to the MSR are also cached so that we donot do a rdmsr for every 1s. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 2 +- arch/x86/kernel/cpu/intel_rdt.h | 1 + arch/x86/kernel/cpu/intel_rdt_monitor.c | 71 +++-- 3 f

[PATCH 1/6] x86/intel_rdt/mba_sc: Add documentation for MBA software controller

Add documentation about usage which includes the "schemata" format and use case for MBA software controller. Signed-off-by: Vikas Shivappa --- Documentation/x86/intel_rdt_ui.txt | 63 ++ 1 file changed, 63 insertions(+) diff --git a/Documen

[PATCH 2/6] x86/intel_rdt/mba_sc: Add support to enable/disable via mount option

Specify a new mount option "mba_MB" to enable the user to specify MBA bandwidth in Megabytes(Software Controller/SC) instead of b/w percentage: $mount -t resctrl resctrl [-o cdp[,cdpl2][mba_MB]] /sys/fs/resctrl Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.h

[tip:x86/cache] x86/intel_rdt/cqm: Improve limbo list processing

Commit-ID: 24247aeeabe99eab13b798c2dec066dd6f07 Gitweb: http://git.kernel.org/tip/24247aeeabe99eab13b798c2dec066dd6f07 Author: Vikas Shivappa AuthorDate: Tue, 15 Aug 2017 18:00:43 -0700 Committer: Thomas Gleixner CommitDate: Wed, 16 Aug 2017 12:05:41 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt/mbm: Fix MBM overflow handler during CPU hotplug

Commit-ID: bbc4615e0b7df5e21d0991adb4b2798508354924 Gitweb: http://git.kernel.org/tip/bbc4615e0b7df5e21d0991adb4b2798508354924 Author: Vikas Shivappa AuthorDate: Tue, 15 Aug 2017 18:00:42 -0700 Committer: Thomas Gleixner CommitDate: Wed, 16 Aug 2017 12:05:41 +0200 x86/intel_rdt/mbm

[PATCH 1/2] x86/intel_rdt/mbm: Fix MBM overflow handler during hot cpu

immediately on a different cpu in same domain. We donot flush the worker because the MBM overflow worker reschedules the worker on same CPU and scans the domain->cpu_mask to get the domain pointer. Reported-by: Thomas Gleixner Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rd

[PATCH 0/2 V4] Cqm3 support based on resctrl along with MBM

the rmid->busy correctly in case of domain going offline and to use the correct work_cpu. Vikas Shivappa (2): x86/intel_rdt/mbm: Fix MBM overflow handler during hot cpu x86/intel_rdt/cqm: Improve limbo list processing arch/x86/kernel/cpu/intel_rdt.c | 34 - arch/x86/kernel/

[PATCH 2/2] x86/intel_rdt/cqm: Improve limbo list processing

is empty or would return -EBUSY if there are RMIDs on limbo but not on free list. As a side effect of not accessing the limbo list in parallel on IPIs we simplify some of the related data structures. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 32 - arch/

[tip:x86/cache] x86/intel_rdt: Modify the intel_pqr_state for better performance

Commit-ID: a9110b552d44fedbd1221eb0e5bde81da32d9350 Gitweb: http://git.kernel.org/tip/a9110b552d44fedbd1221eb0e5bde81da32d9350 Author: Vikas Shivappa AuthorDate: Wed, 9 Aug 2017 11:46:34 -0700 Committer: Thomas Gleixner CommitDate: Mon, 14 Aug 2017 11:47:47 +0200 x86/intel_rdt: Modify

[tip:x86/cache] x86/intel_rdt/cqm: Clear the default RMID during hotcpu

Commit-ID: eda61c265f3656be8345fdf0334b3a77829437fc Gitweb: http://git.kernel.org/tip/eda61c265f3656be8345fdf0334b3a77829437fc Author: Vikas Shivappa AuthorDate: Wed, 9 Aug 2017 11:46:33 -0700 Committer: Thomas Gleixner CommitDate: Mon, 14 Aug 2017 11:47:46 +0200 x86/intel_rdt/cqm

[PATCH 2/3] x86/intel_rdt: Modify the intel_pqr_state for better performance

-by: Vikas Shivappa --- arch/x86/include/asm/intel_rdt_sched.h | 30 +- arch/x86/kernel/cpu/intel_rdt.c | 10 -- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 10 +- 3 files changed, 26 insertions(+), 24 deletions(-) diff --git a/arch/x86

[PATCH 3/3] x86/intel_rdt/cqm: Improve limbo list processing

is empty or would return -EBUSY if there are RMIDs on limbo but not on free list. As a side effect of not accessing the limbo list in parallel on IPIs we simplify some of the related data structures. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 25 +++- arch/x86/ker

[PATCH 0/3 V3] Cqm3 based on resctrl fs with MBM support

/cache (where the V2 was merged) Vikas Shivappa (3): x86/intel_rdt/cqm: Add fix to clear the default RMID during hotcpu x86/intel_rdt: Modify the intel_pqr_state for better performance x86/intel_rdt/cqm: Improve limbo list processing arch/x86/include/asm/intel_rdt_sched.h | 30 +++-- arch/x86

[PATCH 1/3] x86/intel_rdt/cqm: Add fix to clear the default RMID during hotcpu

The user configured per cpu default RMID is not cleared during cpu hotplug. This may lead to incorrect RMID values after a cpu goes offline and again comes back online. Clear the per cpu default RMID during cpu offline and online handling. Reported-by: Prakyha Sai Praneeth Signed-off-by: Vikas

[tip:x86/cache] x86/intel_rdt/mbm: Handle counter overflow

Commit-ID: e33026831bdb5f051499fec6a606f79fe1f94cc8 Gitweb: http://git.kernel.org/tip/e33026831bdb5f051499fec6a606f79fe1f94cc8 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:47 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:29 +0200 x86/intel_rdt/mbm

[tip:x86/cache] x86/intel_rdt/mbm: Add mbm counter initialization

Commit-ID: a4de1dfdd726537e2a78b55759fc646d9b0a0be8 Gitweb: http://git.kernel.org/tip/a4de1dfdd726537e2a78b55759fc646d9b0a0be8 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:46 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:29 +0200 x86/intel_rdt/mbm

[tip:x86/cache] x86/intel_rdt/cqm: Add CPU hotplug support

Commit-ID: 895c663ecef16c8138e20a7d5c052e0fcc400241 Gitweb: http://git.kernel.org/tip/895c663ecef16c8138e20a7d5c052e0fcc400241 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:44 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:28 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt/cqm: Add rmdir support

Commit-ID: f3cbeacaa06e2b8c2f3ce8531e9aa3fe1f2762cd Gitweb: http://git.kernel.org/tip/f3cbeacaa06e2b8c2f3ce8531e9aa3fe1f2762cd Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:40 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:27 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt/cqm: Add mount,umount support

Commit-ID: 4af4a88e0c9246990f95c88eeba781265f27c58e Gitweb: http://git.kernel.org/tip/4af4a88e0c9246990f95c88eeba781265f27c58e Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:41 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:27 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt/cqm: Add sched_in support

Commit-ID: 748b6b881ccdda8f0663c68605f431279e06f49a Gitweb: http://git.kernel.org/tip/748b6b881ccdda8f0663c68605f431279e06f49a Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:43 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:28 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt: Introduce rdt_enable_key for scheduling

Commit-ID: 4be6c078428b08d1a948cc09faca8f1326231866 Gitweb: http://git.kernel.org/tip/4be6c078428b08d1a948cc09faca8f1326231866 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:42 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:27 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt: Separate the ctrl bits from rmdir

Commit-ID: f9049547f7e72377049d717354b2f56f36a5854a Gitweb: http://git.kernel.org/tip/f9049547f7e72377049d717354b2f56f36a5854a Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:39 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:26 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt/cqm: Add mon_data

Commit-ID: d89b7379015fc561060a4094676d143e6ed264e7 Gitweb: http://git.kernel.org/tip/d89b7379015fc561060a4094676d143e6ed264e7 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:38 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:26 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt: Prepare for RDT monitor data support

Commit-ID: 90c403e83101c87ee9e6df8c8d30ea8628ff8bfc Gitweb: http://git.kernel.org/tip/90c403e83101c87ee9e6df8c8d30ea8628ff8bfc Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:37 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:25 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt/cqm: Add cpus file support

Commit-ID: a9fcf8627dc01049c390023bbb0323db3c785b91 Gitweb: http://git.kernel.org/tip/a9fcf8627dc01049c390023bbb0323db3c785b91 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:36 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:25 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt: Change closid type from int to u32

Commit-ID: 0734ded1abee9439b0c5d7b62af1ead78aab895b Gitweb: http://git.kernel.org/tip/0734ded1abee9439b0c5d7b62af1ead78aab895b Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:33 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:24 +0200 x86/intel_rdt: Change

[tip:x86/cache] x86/intel_rdt: Prepare to add RDT monitor cpus file support

Commit-ID: b09d981b3f346690dafa3e4ebedfcf3e44b68e83 Gitweb: http://git.kernel.org/tip/b09d981b3f346690dafa3e4ebedfcf3e44b68e83 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:35 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:25 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt/cqm: Add tasks file support

Commit-ID: d6aaba615a482ce7d3ec218cf7b8d02d0d5753b8 Gitweb: http://git.kernel.org/tip/d6aaba615a482ce7d3ec218cf7b8d02d0d5753b8 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:34 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:24 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt/cqm: Add info files for RDT monitoring

Commit-ID: d4ab33201029913b594ae785a9665f45040396ab Gitweb: http://git.kernel.org/tip/d4ab33201029913b594ae785a9665f45040396ab Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:30 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:22 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt/cqm: Add mkdir support for RDT monitoring

Commit-ID: c7d9aac6131148abe29ed1dc6bd73ad1213d1f56 Gitweb: http://git.kernel.org/tip/c7d9aac6131148abe29ed1dc6bd73ad1213d1f56 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:32 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:23 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt/cqm: Add RMID (Resource monitoring ID) management

Commit-ID: edf6fa1c4a951b3a03e94b63e6483c5d9da3ab11 Gitweb: http://git.kernel.org/tip/edf6fa1c4a951b3a03e94b63e6483c5d9da3ab11 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:28 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:21 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt: Prepare for RDT monitoring mkdir support

Commit-ID: 65b4f403057e32da73c36e33d403890173c4c324 Gitweb: http://git.kernel.org/tip/65b4f403057e32da73c36e33d403890173c4c324 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:31 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:23 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt/cqm: Add RDT monitoring initialization

Commit-ID: 6a445edce657810992594c7b9e679219aaf78ad9 Gitweb: http://git.kernel.org/tip/6a445edce657810992594c7b9e679219aaf78ad9 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:27 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:21 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/intel_rdt: Cleanup namespace to support RDT monitoring

Commit-ID: 1b5c0b7583173b787b5c93ff89838a950d0e23ff Gitweb: http://git.kernel.org/tip/1b5c0b7583173b787b5c93ff89838a950d0e23ff Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:25 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:20 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt: Make rdt_resources_all more readable

Commit-ID: dd131853f3fbc1c3aa051c34a2967c2f76309024 Gitweb: http://git.kernel.org/tip/dd131853f3fbc1c3aa051c34a2967c2f76309024 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:26 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:20 +0200 x86/intel_rdt: Make

[tip:x86/cache] x86/intel_rdt: Introduce a common compile option for RDT

Commit-ID: f01d7d51f577b5dc0fa5919ab8a9228e2bf49f3e Gitweb: http://git.kernel.org/tip/f01d7d51f577b5dc0fa5919ab8a9228e2bf49f3e Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:22 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:19 +0200 x86/intel_rdt

[tip:x86/cache] x86/intel_rdt: Change file names to accommodate RDT monitor code

Commit-ID: 0583020456cea9fcf43b84bb13a41eab059ae0a8 Gitweb: http://git.kernel.org/tip/0583020456cea9fcf43b84bb13a41eab059ae0a8 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:23 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:19 +0200 x86/intel_rdt: Change

[tip:x86/cache] x86/intel_rdt/cqm: Documentation for resctrl based RDT Monitoring

Commit-ID: 1640ae9471ae41eb18d2b214f1f40af3c4ed3828 Gitweb: http://git.kernel.org/tip/1640ae9471ae41eb18d2b214f1f40af3c4ed3828 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:21 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:19 +0200 x86/intel_rdt/cqm

[tip:x86/cache] x86/perf/cqm: Wipe out perf based cqm

Commit-ID: c39a0e2c8850f08249383f2425dbd8dbe4baad69 Gitweb: http://git.kernel.org/tip/c39a0e2c8850f08249383f2425dbd8dbe4baad69 Author: Vikas Shivappa AuthorDate: Tue, 25 Jul 2017 14:14:20 -0700 Committer: Thomas Gleixner CommitDate: Tue, 1 Aug 2017 22:41:18 +0200 x86/perf/cqm: Wipe

[PATCH 18/28] x86/intel_rdt: Prepare for RDT monitor data support

Rename the intel_rdt_schemata file to intel_rdt_ctrlmondata as we now want to add support for RDT monitoring data for the events that are supported in later patches. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/Makefile| 2 +- arch/x86/kernel/cpu

[PATCH 16/28] x86/intel_rdt: Prepare to add RDT monitor cpus file support

Separate the ctrl cpus file handling from the generic cpus file handling and convert the per cpu closid from u32 to a struct which will be used later to add rmid to the same struct. Also cleanup some name space. Signed-off-by: Vikas Shivappa --- arch/x86/include/asm/intel_rdt_sched.h | 4

[PATCH 13/28] x86/intel_rdt/cqm: Add mkdir support for RDT monitoring

code: Removed a lot of common mkdir code, a fix to handling of the list of the child rdtgroups and some cleanups in list traversal. Also the changes to have similar alloc and free for CLOS/RMID and return -EBUSY when RMIDs are in limbo and not free] Signed-off-by: Tony Luck Signed-off-by: Vikas

[PATCH 15/28] x86/intel_rdt/cqm: Add tasks file support

t;u32 rmid" which holds the RMID for the task. RMID=0 is reserved for the default root group where the tasks belong to at mount. [tony: zero the rmid if rdtgroup was deleted when task was being moved] Signed-off-by: Tony Luck Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt_

[PATCH 14/28] x86/intel_rdt: Change closid type from int to u32

OS associates a CLOSid(Class of service id) to a task by writing the high 32 bits of per CPU IA32_PQR_ASSOC MSR when a task is scheduled in. CPUID.(EAX=10H, ECX=1):EDX[15:0] enumerates the max CLOSID supported and it is zero indexed. Hence change the type to u32 from int. Signed-off-by: Vikas

[PATCH 10/28] x86/intel_rdt: Simplify info and base file lists

. [Vikas: Extended the flags to have few bits per category like resource, info/base etc] Signed-off-by: Tony luck Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 7 +- arch/x86/kernel/cpu/intel_rdt.h | 22 +++- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 191

[PATCH 11/28] x86/intel_rdt/cqm: Add info files for RDT monitoring

is used to determine if an RMID can be reused. Provides an upper bound on the threshold and is shown to the user in bytes though the internal value will be rounded to the scaling factor supported by the h/w. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.h

[PATCH 12/28] x86/intel_rdt: Prepare for RDT monitoring mkdir support

Separate the ctrl mkdir code from the rest in order to prepare for adding support for RDT monitoring mkdir support as well. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 112 ++- 1 file changed, 80 insertions(+), 32 deletions(-) diff

[PATCH 06/28] x86/intel_rdt: Cleanup namespace to support RDT monitoring

Few of the data-structures have generic names although they are RDT allocation specific. Rename them to be allocation specific to accommodate RDT monitoring. E.g. s/enabled/alloc_enabled/ No functional change. Signed-off-by: Vikas Shivappa --- arch/x86/include/asm/intel_rdt_sched.h | 4

[PATCH 08/28] x86/intel_rdt/cqm: Add RDT monitoring initialization

t;cqm" from some names, make some data structure local to intel_rdt_monitor.c static. Add copyright header] Signed-off-by: Tony Luck Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/Makefile| 2 +- arch/x86/kernel/cpu/intel_rdt.c | 46 - arch/x86/kernel/cpu/i

[PATCH 09/28] x86/intel_rdt/cqm: Add RMID(Resource monitoring ID) management

mbo search] Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 32 + arch/x86/kernel/cpu/intel_rdt.h | 6 + arch/x86/kernel/cpu/intel_rdt_monitor.c | 213 3 files changed, 251 insertions(+) diff --git a/arch/x86/kernel/

[PATCH 02/28] x86/intel_rdt/cqm: Documentation for resctrl based RDT Monitoring

Add a description of resctrl based RDT(resource director technology) monitoring extension and its usage. [Tony: Added descriptions for how monitoring and allocation are measured and some cleanups] Signed-off-by: Tony Luck Signed-off-by: Vikas Shivappa --- Documentation/x86/intel_rdt_ui.txt

[PATCH 01/28] x86/perf/cqm: Wipe out perf based cqm

cket usage. Signed-off-by: Vikas Shivappa --- arch/x86/events/intel/Makefile |2 +- arch/x86/events/intel/cqm.c | 1766 --- arch/x86/include/asm/intel_rdt_common.h |2 - arch/x86/kernel/cpu/intel_rdt.c |8 + include/linux/pe

[PATCH 17/28] x86/intel_rdt/cqm: Add cpus file support

omatically removed from the previous monitor group. When CPUs go offline, they are automatically removed from the ctrl_mon and monitor groups. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 110 ++- 1 file changed, 93 insertions(+),

[PATCH 05/28] x86/intel_rdt: Mark rdt_root and closid_alloc as static

From: Reinette Chatre Sparse reports that both of these can be static. Make it so. Signed-off-by: Reinette Chatre Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu

[PATCH 22/28] x86/intel_rdt/cqm: Add mount,umount support

is enabled all of the monitoring related directories/files would not exist and resctrl would work in legacy mode. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.h | 4 +++ arch/x86/kernel/cpu/intel_rdt_monitor.c | 1 + arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 61 +

[PATCH 21/28] x86/intel_rdt/cqm: Add rmdir support

the parent control group. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 90 ++-- 1 file changed, 86 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c index

[PATCH 19/28] x86/intel_rdt/cqm: Add mon_data

omain directory and have one file per event (and use the fp->priv to store mon data bits)] Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 9 +- arch/x86/kernel/cpu/intel_rdt.h | 29 ++ arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 55 ++

[PATCH 20/28] x86/intel_rdt: Separate the ctrl bits from rmdir

Re-factor the code to separate the ctrl group removal from the rmdir to prepare to add RDT monitoring group removal. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 48 ++-- 1 file changed, 33 insertions(+), 15 deletions(-) diff --git a

[PATCH 23/28] x86/intel_rdt: Introduce rdt_enable_key for scheduling

Introduce the usage of rdt_enable_key in sched_in code as a preparation to add RDT monitoring support for sched_in. Signed-off-by: Vikas Shivappa --- arch/x86/include/asm/intel_rdt_sched.h | 12 ++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm

[PATCH 26/28] x86/intel_rdt/mbm: Basic counting of MBM events (total and local)

: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 23 +++- arch/x86/kernel/cpu/intel_rdt.h | 33 + arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 1 + arch/x86/kernel/cpu/intel_rdt_monitor.c | 31

[PATCH 25/28] x86/intel_rdt/cqm: Add hotcpu support

Resource groups have a per domain directory under "mon_data". Add or remove these directories as and when domains come online and go offline. Also update the per cpu rmids and cache upon onlining and offlining cpus. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c

[PATCH 24/28] x86/intel_rdt/cqm: Add sched_in support

cpu CLOSid/RMID values are cached and the write is performed only when a task with a different CLOSid/RMID is scheduled in. Signed-off-by: Vikas Shivappa --- arch/x86/include/asm/intel_rdt_sched.h | 50 -- arch/x86/kernel/cpu/intel_rdt.h| 4 --- 2 files

[PATCH 04/28] x86/intel_rdt: Change file names to accommodate RDT monitor code

rations to a local intel_rdt.h. h/t to Reinette Chatre for pointing out that we should separate the public interfaces used by other parts of the kernel from private objects shared between the various files comprising RDT. No functional change. Signed-off-by: Vikas Shivappa --- M

[PATCH 28/28] x86/intel_rdt/mbm: Handle counter overflow

d-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 21 --- arch/x86/kernel/cpu/intel_rdt.h | 10 + arch/x86/kernel/cpu/intel_rdt_monitor.c | 63 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 9 + 4 files change

[PATCH 27/28] x86/intel_rdt/mbm: Add mbm counter initialization

bytes) or local_bytes(local memory controller bytes) file in "mon_data" is read it shows the total bytes for that rdtgroup since its creation. User can snapshot this at different time intervals to obtain bytes/second. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/i

[PATCH 03/28] x86/intel_rdt: Introduce a common compile option for RDT

allocation and monitoring code. No functional change. Signed-off-by: Vikas Shivappa --- arch/x86/Kconfig | 12 ++-- arch/x86/include/asm/intel_rdt.h | 4 ++-- arch/x86/kernel/cpu/Makefile | 2 +- include/linux/sched.h| 2 +- 4 files changed, 10 insertions

[PATCH 07/28] x86/intel_rdt: make rdt_resources_all more readable

Change the format of the global rdt_resources_all. This holds all the RDT resource structure initialization values. Make this more readable by using the format: rdt_resources_all[] = { [] = {... } ... } Signed-off-by: Vikas Shivappa --- arch/x86/kernel

[PATCH 00/28 V2] Cqm3 patch series(along with MBM support)

/intel_rdt/mbm: Basic counting of MBM events (total and local) Vikas Shivappa (25): x86/perf/cqm: Wipe out perf based cqm x86/intel_rdt/cqm: Documentation for resctrl based RDT Monitoring x86/intel_rdt: Introduce a common compile option for RDT x86/intel_rdt: Change file names to accommodate

[tip:x86/urgent] x86/intel_rdt: Fix memory leak on mount failure

Commit-ID: 79298acc4ba097e9ab78644e3e38902d73547c92 Gitweb: http://git.kernel.org/tip/79298acc4ba097e9ab78644e3e38902d73547c92 Author: Vikas Shivappa AuthorDate: Mon, 26 Jun 2017 11:55:49 -0700 Committer: Thomas Gleixner CommitDate: Fri, 30 Jun 2017 21:20:00 +0200 x86/intel_rdt: Fix

[PATCH 07/21] x86/intel_rdt/cqm: Add RDT monitoring initialization

t;cqm" from some names, make some data structure local to intel_rdt_monitor.c static. Add copyright header] Signed-off-by: Tony Luck Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/Makefile| 2 +- arch/x86/kernel/cpu/intel_rdt.c | 38 +--- arch/x86/kernel/cpu/i

[PATCH 03/21] x86/intel_rdt/cqm: Documentation for resctrl based RDT Monitoring

Add a description of resctrl based RDT(resource director technology) monitoring extension and its usage. [Tony: Added descriptions for how monitoring and allocation are measured and some cleanups] Signed-off-by: Tony Luck Signed-off-by: Vikas Shivappa --- Documentation/x86/intel_rdt_ui.txt

[PATCH 01/21] x86/perf/cqm: Wipe out perf based cqm

cket usage. Signed-off-by: Vikas Shivappa --- arch/x86/events/intel/Makefile |2 +- arch/x86/events/intel/cqm.c | 1766 --- arch/x86/include/asm/intel_rdt_common.h |2 - arch/x86/kernel/cpu/intel_rdt.c |8 + include/linux/pe

[PATCH 16/21] x86/intel_rdt/cqm: Add mount,umount support

is enabled all of the monitoring related directories/files would not exist and resctrl would work in legacy mode. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.h | 5 +++ arch/x86/kernel/cpu/intel_rdt_monitor.c | 3 ++ arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 67 +

[PATCH 12/21] x86/intel_rdt/cqm: Add tasks file support

t;u32 rmid" which holds the RMID for the task. RMID=0 is reserved for the default root group where the tasks belong to at mount. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 18 -- include/linux/sched.h| 1 + 2 files chang

[PATCH 09/21] x86/intel_rdt: Simplify info and base file lists

. [Vikas: Extended the flags to have few bits per category like resource, info/base etc] Signed-off-by: Tony luck Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 7 +- arch/x86/kernel/cpu/intel_rdt.h | 23 +++-- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 154

[PATCH 18/21] x86/intel_rdt/cqm: Add hotcpu support

Resource groups have a per domain directory under "mon_data". Add or remove these directories as and when domains come online and go offline. Also update the per cpu rmids and cache upon onlining and offlining cpus. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c

[PATCH 06/21] x86/intel_rdt: Cleanup namespace to support RDT monitoring

Few of the data-structures have generic names although they are RDT allocation specific. Rename them to be allocation specific to accommodate RDT monitoring. E.g. s/enabled/alloc_enabled/ No functional change. Signed-off-by: Vikas Shivappa --- arch/x86/include/asm/intel_rdt_sched.h | 4

[PATCH 08/21] x86/intel_rdt/cqm: Add RMID(Resource monitoring ID) management

having some occupancy. They continue to be in limbo list until the occupancy < threshold_occupancy. The threshold_occupancy is a user configurable value. OS uses IA32_QM_CTR MSR to read the occupancy associated with an RMID after programming the IA32_EVENTSEL MSR with the RMID. Signed-off-by: Vi

[PATCH 10/21] x86/intel_rdt/cqm: Add info files for RDT monitoring

is used to determine if an RMID can be reused. Provides an upper bound on the threshold and is shown to the user in bytes though the internal value will be rounded to the scaling factor supported by the h/w. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.h

[PATCH 11/21] x86/intel_rdt/cqm: Add mkdir support for RDT monitoring

code: Removed a lot of common mkdir code, a fix to handling of the list of the child rdtgroups and some cleanups in list traversal. Also the changes to have similar alloc and free for CLOS/RMID and return -EBUSY when RMIDs are in limbo and not free] Signed-off-by: Tony Luck Signed-off-by: Vikas

[PATCH 13/21] x86/intel_rdt/cqm: Add cpus file support

omatically removed from the previous monitor group. When CPUs go offline, they are automatically removed from the ctrl_mon and monitor groups. Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 15 ++- arch/x86/kernel/cpu/intel_rdt.h | 2 + arch/x86/kernel/cpu

[PATCH 21/21] x86/intel_rdt/mbm: Handle counter overflow

d-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/intel_rdt.c | 34 +++ arch/x86/kernel/cpu/intel_rdt.h | 9 + arch/x86/kernel/cpu/intel_rdt_monitor.c | 57 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 9 + 4 files changed

[PATCH 14/21] x86/intel_rdt/cqm: Add mon_data

omain directory and have one file per event (and use the fp->priv to store mon data bits)] Signed-off-by: Vikas Shivappa --- arch/x86/kernel/cpu/Makefile| 2 +- arch/x86/kernel/cpu/intel_rdt.c | 4 +- arch/x86/kernel/cpu/intel_rdt.h | 27 +++ a

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