ttps://lore.kernel.org/lkml/157476581065.5793.4518979877345136813.stgit@buzz/
This time we present more latency statistics and handle overflow while
accumulating.
Huaixin Chang (4):
sched/fair: Introduce primitives for CFS bandwidth burst
sched/fair: Make CFS bandwidth controller burstable
.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
Reported-by: kernel test robot
---
include/linux/sched/sysctl.h | 2 ++
kernel/sched/core.c | 31 +
kernel/sched/fair.c | 47
kernel/sched
respective periods
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
kernel/sched/core.c | 6 ++
kernel/sched/fair.c | 12 +++-
kernel/sched/sched.h | 3 +++
3 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index
a group can consume in
a given period is "buffer" which is equivalent to "quota" + "burst in
case that this group has done enough accumulation.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
kernel/sched/core.c | 91 +++
Basic description of usage and effect for CFS Bandwidth Control Burst.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
Documentation/scheduler/sched-bwc.rst | 70 +--
1 file changed, 66 insertions(+), 4 deletions(-)
diff --git a/Documentation
Since ORC tables are already sorted by sorttable tool, let us move
building of fast lookup table into sorttable tool too. This saves us
6380us from boot time under Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz
with 64 cores.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
arch/x86
two ORC lookup table macro from orc_lookup.h into orc_types.h
3. Spell 'ORC' in capitalized fashion
Huaixin Chang (3):
objtool: Write .orc_lookup section header
scripts/sorttable: Build ORC fast lookup table via sorttable tool
x86/unwind/orc: Simplify unwind_init() for x86 boot
1
[27] .vvar PROGBITS 8297e000 01b7e000
1000 WA 0 0 16
Signed-off-by: Huaixin Chang
---
tools/objtool/orc_gen.c | 4
1 file changed, 4 insertions(+)
diff --git a/tools/objtool/orc_gen.c b/tools/objtool
The ORC fast lookup table is built by scripts/sorttable tool. All that
is left is setting lookup_num_blocks.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
arch/x86/kernel/unwind_orc.c | 41 ++---
1 file changed, 2 insertions(+), 39 deletions
e present more latency statistics and handle overflow while
accumulating.
Huaixin Chang (4):
sched/fair: Introduce primitives for CFS bandwidth burst
sched/fair: Make CFS bandwidth controller burstable
sched/fair: Add cfs bandwidth burst statistics
sched/fair: Add document for burstable
into cpu.stat file:
nr_burst: number of periods bandwidth burst occurs
burst_time: cumulative wall-time that any cpus has
used above quota in respective periods
Co-developed-by: Shanpei Chen
Signed-off-by: Shanpei Chen
Signed-off-by: Huaixin Chang
---
kernel/sched/core.c | 14
Basic description of usage and effect for CFS Bandwidth Control Burst.
Co-developed-by: Shanpei Chen
Signed-off-by: Shanpei Chen
Signed-off-by: Huaixin Chang
---
Documentation/admin-guide/cgroup-v2.rst | 16 +
Documentation/scheduler/sched-bwc.rst | 64
sysctl_sched_cfs_bw_burst_enabled is introduced as a
switch for burst. It is enabled by default.
Co-developed-by: Shanpei Chen
Signed-off-by: Shanpei Chen
Signed-off-by: Huaixin Chang
---
include/linux/sched/sysctl.h | 1 +
kernel/sched/core.c | 8 +++---
kernel/sched/fair.c | 58
a group can consume in
a given period is "buffer" which is equivalent to "quota" + "burst in
case that this group has done enough accumulation.
Co-developed-by: Shanpei Chen
Signed-off-by: Shanpei Chen
Signed-off-by: Huaixin Chang
---
kernel/sched/core.c | 97
//lore.kernel.org/lkml/157476581065.5793.4518979877345136813.stgit@buzz/
This time we present more latency statistics and handle overflow while
accumulating.
Huaixin Chang (4):
sched/fair: Introduce primitives for CFS bandwidth burst
sched/fair: Make CFS bandwidth controller burstable
sched/fair: Add cfs band
Basic description of usage and effect for CFS Bandwidth Control Burst.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
Documentation/scheduler/sched-bwc.rst | 70 +--
1 file changed, 66 insertions(+), 4 deletions(-)
diff --git a/Documentation
respective periods
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
kernel/sched/core.c | 6 ++
kernel/sched/fair.c | 12 +++-
kernel/sched/sched.h | 3 +++
3 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index
.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
Reported-by: kernel test robot
---
include/linux/sched/sysctl.h | 2 ++
kernel/sched/core.c | 31 +
kernel/sched/fair.c | 46
kernel/sched
a group can consume in
a given period is "buffer" which is equivalent to "quota" + "burst in
case that this group has done enough accumulation.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
kernel/sched/core.c | 91 +++
Basic description of usage and effect for CFS Bandwidth Control Burst.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
Documentation/scheduler/sched-bwc.rst | 70 +--
1 file changed, 66 insertions(+), 4 deletions(-)
diff --git a/Documentation
respective periods
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
kernel/sched/core.c | 6 ++
kernel/sched/fair.c | 12 +++-
kernel/sched/sched.h | 3 +++
3 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index
.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
Reported-by: kernel test robot
---
include/linux/sched/sysctl.h | 2 ++
kernel/sched/core.c | 31 +
kernel/sched/fair.c | 47
kernel/sched
a group can consume in
a given period is "buffer" which is equivalent to "quota" + "burst in
case that this group has done enough accumulation.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
kernel/sched/core.c | 91 +++
//lore.kernel.org/lkml/20180522062017.5193-1-xiyou.wangc...@gmail.com/
https://lore.kernel.org/lkml/157476581065.5793.4518979877345136813.stgit@buzz/
This time we present more latency statistics and handle overflow while
accumulating.
Huaixin Chang (4):
sched/fair: Introduce primitives for CFS bandwi
low while
accumulating.
Huaixin Chang (4):
sched/fair: Introduce primitives for CFS bandwidth burst
sched/fair: Make CFS bandwidth controller burstable
sched/fair: Add cfs bandwidth burst statistics
sched/fair: Add document for burstable CFS bandwidth control
Documentation/schedul
Basic description of usage and effect for CFS Bandwidth Control Burst.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
Documentation/scheduler/sched-bwc.rst | 49 ---
1 file changed, 45 insertions(+), 4 deletions(-)
diff --git a/Documentation
respective periods
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
kernel/sched/core.c | 6 ++
kernel/sched/fair.c | 12 +++-
kernel/sched/sched.h | 3 +++
3 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index
.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
include/linux/sched/sysctl.h | 2 ++
kernel/sched/core.c | 31 +
kernel/sched/fair.c | 46
kernel/sched/sched.h | 4 ++--
kernel
a group can consume in
a given period is "buffer" which is equivalent to "quota" + "burst in
case that this group has done enough accumulation.
Signed-off-by: Huaixin Chang
Signed-off-by: Shanpei Chen
---
kernel/sched/core.c | 91 +++
Since orc tables are already sorted by sorttable tool, let us move
building of fast lookup table into sorttable tool too. This saves us
6380us from boot time under Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz
with 64 cores.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
scripts
All preparation has been moved to scripts/sorttable tool. No need to
init unwind on boot now.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
arch/x86/include/asm/unwind.h | 2 --
arch/x86/kernel/setup.c | 2 --
arch/x86/kernel/unwind_orc.c | 51
Move building of fast lookup table from boot to sorttable tool. This saves us
6380us boot time on Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz with cores.
Huaixin Chang (2):
scripts/sorttable: Build orc fast lookup table via sorttable tool
x86/unwind/orc: Remove unwind_init() from x86 boot
ff-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
include/asm-generic/vmlinux.lds.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/asm-generic/vmlinux.lds.h
b/include/asm-generic/vmlinux.lds.h
index db600ef218d7..49f4f5bc6165 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/in
Since orc tables are already sorted by sorttable tool, let us move
building of fast lookup table into sorttable tool too. This saves us
6380us from boot time under Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz
with 64 cores.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
scripts
needed.
Huaixin Chang (3):
scripts/sorttable: Change section type of orc_lookup to SHT_PROGBITS
scripts/sorttable: Build orc fast lookup table via sorttable tool
x86/unwind/orc: Simplify unwind_init() for x86 boot
arch/x86/kernel/unwind_orc.c | 40
include/asm-generic
The orc fast lookup table is built by scripts/sorttable tool. All that
is left is setting lookup_num_blocks.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
arch/x86/kernel/unwind_orc.c | 40
1 file changed, 40 deletions(-)
diff --git a
ff-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
include/asm-generic/vmlinux.lds.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/asm-generic/vmlinux.lds.h
b/include/asm-generic/vmlinux.lds.h
index db600ef218d7..49f4f5bc6165 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/in
Since orc tables are already sorted by sorttable tool, let us move
building of fast lookup table into sorttable tool too. This saves us
6380us from boot time under Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz
with 64 cores.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
scripts
. Type of section orc_lookup needs to be SHT_PROGBITS.
2. unwind_init() cannot be removed totally as setting lookup_num_blocks is
needed.
Huaixin Chang (3):
scripts/sorttable: Change section type of orc_lookup to SHT_PROGBITS
scripts/sorttable: Build orc fast lookup table via sorttable tool
The orc fast lookup table is built by scripts/sorttable tool. All that
is left is setting lookup_num_blocks.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
arch/x86/kernel/unwind_orc.c | 41 ++---
1 file changed, 2 insertions(+), 39 deletions
The orc fast lookup table is built by scripts/sorttable tool. All that
is left is setting lookup_num_blocks.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
arch/x86/kernel/unwind_orc.c | 41 ++---
1 file changed, 2 insertions(+), 39 deletions
lookup_num_blocks
is still needed.
Huaixin Chang (3):
scripts/sorttable: Change section type of orc_lookup to SHT_PROGBITS
scripts/sorttable: Build orc fast lookup table via sorttable tool
x86/unwind/orc: Simplify unwind_init() for x86 boot
arch/x86/kernel/unwind_orc.c | 41
Since orc tables are already sorted by sorttable tool, let us move
building of fast lookup table into sorttable tool too. This saves us
6380us from boot time under Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz
with 64 cores.
Signed-off-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
scripts
ff-by: Huaixin Chang
Signed-off-by: Shile Zhang
---
include/asm-generic/vmlinux.lds.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/asm-generic/vmlinux.lds.h
b/include/asm-generic/vmlinux.lds.h
index db600ef218d7..49f4f5bc6165 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/in
The following commit has been merged into the sched/core branch of tip:
Commit-ID: d505b8af58912ae1e1a211fabc9995b19bd40828
Gitweb:
https://git.kernel.org/tip/d505b8af58912ae1e1a211fabc9995b19bd40828
Author:Huaixin Chang
AuthorDate:Sat, 25 Apr 2020 18:52:48 +08:00
The following commit has been merged into the sched/core branch of tip:
Commit-ID: 5a6d6a6ccb5f48ca8cf7c6d64ff83fd9c7999390
Gitweb:
https://git.kernel.org/tip/5a6d6a6ccb5f48ca8cf7c6d64ff83fd9c7999390
Author:Huaixin Chang
AuthorDate:Mon, 20 Apr 2020 10:44:21 +08:00
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