kernel of next-20170602 call trace when run add_key02 in LTP

Hi, Compile kernel (next-20170602) and run ltp, find: / # ./add_key02 tst_test.c:878: INFO: Timeout per run is 0h 05m 00s [ 341.183219] BUG: unable to handle kernel NULL pointer dereference at (null) [ 341.183850] IP: memset+0x10/0x20 [ 341.184550] *pdpt = 35441001 *pde =

Re: 【BUG】The kernel start fail when enable CONFIG_ARM64_LSE_ATOMICS and KCOV_INSTRUMENT_ALL

hen I saw this happen, this resulted in cmpxchg() spuriously failing > somewhere in the page init code, which looks similar to what you're > seeing. > > The patch at [1] is sufficient to work around this for the time being. Thank you for your explanation :-D . Thanks, Bixuan Cui >

【BUG】The kernel start fail when enable CONFIG_ARM64_LSE_ATOMICS and KCOV_INSTRUMENT_ALL

Anyone can give me advice? Thanks, Bixuan Cui

Re: [PATCH] kernel/kprobes: add check to avoid memory leaks

On 2017/10/30 12:42, Masami Hiramatsu wrote: > I don't like this kind of check, since this is obviously caller's bug. > Why doesn't each caller check this? Thank you for your answer. Thanks, Bixuan Cui

[PATCH] kernel/kprobes: add check to avoid memory leaks

HLIST_HEAD() and kmalloc() then create a new hash list into rp->free_instances and lost the first rp->free_instances. So add check to avoid it. Reported-and-tested-by: kangwen <kangw...@huawei.com> Signed-off-by: Bixuan Cui <cuibix...@huawei.com> --- kernel/kprobes.c | 8 +++-

Re: [PATCH] kernel/kprobes: add check to avoid memory leaks

On 2017/10/25 20:29, Bixuan Cui wrote: And test again with this patch: insmod testRegKretprobes_004.ko [ 163.853281] register_kretprobe failed, returned -22 insmod: can't insert 'testRegKretprobes_004.ko': Operation not permitted Thanks, Bixuan Cui > The register_kretprobe(struct kretprobe

【BUG】The kernel start fail when enable CONFIG_ARM64_LSE_ATOMICS and KCOV_INSTRUMENT_ALL

Anyone can give me advice? Thanks, Bixuan Cui

Re: 【BUG】The kernel start fail when enable CONFIG_ARM64_LSE_ATOMICS and KCOV_INSTRUMENT_ALL

hen I saw this happen, this resulted in cmpxchg() spuriously failing > somewhere in the page init code, which looks similar to what you're > seeing. > > The patch at [1] is sufficient to work around this for the time being. Thank you for your explanation :-D . Thanks, Bixuan Cui >

Re: [PATCH] kernel/kprobes: add check to avoid memory leaks

On 2017/10/25 20:29, Bixuan Cui wrote: And test again with this patch: insmod testRegKretprobes_004.ko [ 163.853281] register_kretprobe failed, returned -22 insmod: can't insert 'testRegKretprobes_004.ko': Operation not permitted Thanks, Bixuan Cui > The register_kretprobe(struct kretprobe

Re: [PATCH] kernel/kprobes: add check to avoid memory leaks

On 2017/10/30 12:42, Masami Hiramatsu wrote: > I don't like this kind of check, since this is obviously caller's bug. > Why doesn't each caller check this? Thank you for your answer. Thanks, Bixuan Cui

kernel of next-20170602 call trace when run add_key02 in LTP

Hi, Compile kernel (next-20170602) and run ltp, find: / # ./add_key02 tst_test.c:878: INFO: Timeout per run is 0h 05m 00s [ 341.183219] BUG: unable to handle kernel NULL pointer dereference at (null) [ 341.183850] IP: memset+0x10/0x20 [ 341.184550] *pdpt = 35441001 *pde =

[PATCH v2 0/2] perf tools: add 'perf irq' to measure the hardware interrupts

| 693757.533194 s Changes from v2: * Delete "-m", "1024" in __cmd_record() * Change 'perf irq timeconsume ' to 'perf irq report ' * Fix a error for tools/perf/Documentation/perf-irq.txt Bixuan Cui (2): perf tools: add 'perf irq' to measure the hardware interrup

[PATCH v2 2/2] perf tools: Add documentation for 'perf irq' command

Add documentation for 'perf irq' command. Signed-off-by: Bixuan Cui --- tools/perf/Documentation/perf-irq.txt | 58 +++ tools/perf/command-list.txt | 1 + 2 files changed, 59 insertions(+) create mode 100644 tools/perf/Documentation/perf-irq.txt diff --git

[PATCH v2 1/2] perf tools: add 'perf irq' to measure the hardware interrupts

hardware interrupt processing function. Signed-off-by: Bixuan Cui --- tools/perf/Build | 1 + tools/perf/builtin-irq.c | 287 +++ tools/perf/builtin.h | 1 + tools/perf/perf.c| 1 + 4 files changed, 290 insertions(+) create mode

Re: [PATCH 1/2] perf tools: add 'perf irq' to measure the hardware interrupts

On 2021/1/13 3:50, Alexei Budankov wrote: > Hi Bixuan, > > On 12.01.2021 15:55, Bixuan Cui wrote: >> Add 'perf irq' to trace/measure the hardware interrupts. >> >> Now three functions are provided: >> 1. 'perf irq record ' to record the irq handler events.

[PATCH v3 2/2] perf tools: Add documentation for 'perf irq' command

Add documentation for 'perf irq' command. Signed-off-by: Bixuan Cui --- tools/perf/Documentation/perf-irq.txt | 47 +++ tools/perf/command-list.txt | 1 + 2 files changed, 48 insertions(+) create mode 100644 tools/perf/Documentation/perf-irq.txt diff --git

[PATCH v3 0/2] perf tools: add 'perf irq' to measure the hardware interrupts

uot; in __cmd_record(); * Change 'perf irq timeconsume ' to 'perf irq report '; * Fix a error for tools/perf/Documentation/perf-irq.txt; Bixuan Cui (2): perf tools: add 'perf irq' to measure the hardware interrupts perf tools: Add documentation for 'perf irq' command tools/perf/Build

[PATCH v3 1/2] perf tools: add 'perf irq' to measure the hardware interrupts

hardware interrupt processing function. Signed-off-by: Bixuan Cui --- tools/perf/Build | 1 + tools/perf/builtin-irq.c | 283 +++ tools/perf/builtin.h | 1 + tools/perf/perf.c| 1 + 4 files changed, 286 insertions(+) create mode

[PATCH 2/2] perf tools: Add documentation for 'perf irq' command

Add documentation for 'perf irq' command. Signed-off-by: Bixuan Cui --- tools/perf/Documentation/perf-irq.txt | 58 +++ tools/perf/command-list.txt | 1 + 2 files changed, 59 insertions(+) create mode 100644 tools/perf/Documentation/perf-irq.txt diff --git

[PATCH 1/2] perf tools: add 'perf irq' to measure the hardware interrupts

by each hardware interrupt processing function. Signed-off-by: Bixuan Cui --- tools/perf/Build | 1 + tools/perf/builtin-irq.c | 288 +++ tools/perf/builtin.h | 1 + tools/perf/perf.c| 1 + 4 files changed, 291 insertions(+) create

[PATCH 0/2] perf tools: add 'perf irq' to measure the hardware interrupts

--- acpi | [0016] | 0.18 s | 6631263.085787 s | 6631263.085805 s Bixuan Cui (2): perf tools: add 'perf irq' to measure the hardware interrupts perf tools: Add documentation for 'perf irq' command tools/perf/Build | 1

[PATCH] kernel/kprobes: add check to avoid memory leaks

HLIST_HEAD() and kmalloc() then create a new hash list into rp->free_instances and lost the first rp->free_instances. So add check to avoid it. Reported-and-tested-by: kangwen Signed-off-by: Bixuan Cui --- kernel/kprobes.c | 8 +++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --

Re: [PATCH v2] net: neterion: vxge: reduce stack usage in VXGE_COMPLETE_VPATH_TX

On 2020/7/21 9:38, David Miller wrote: > From: Bixuan Cui > Date: Mon, 20 Jul 2020 09:58:39 +0800 > >> Fix the warning: [-Werror=-Wframe-larger-than=] >> >> drivers/net/ethernet/neterion/vxge/vxge-main.c: >> In function'VXGE_COMPLETE_VPATH_TX.isra.37': >

Re: [PATCH v2] mm/percpu: fix 'defined but not used' warning

On 2020/7/15 2:41, Roman Gushchin wrote: >> Fixes: 26c99879ef01 ("mm: memcg/percpu: account percpu memory to memory >> cgroups") > The "fixes" tag is not valid: the patch is in the mm queue, so it doesn't > have a stable hash. Usually Andrew squashes such fixes into the original patch > on

[PATCH v3] mm/percpu: fix 'defined but not used' warning

' to pcpu_chunk_type(),pcpu_is_memcg_chunk() and pcpu_chunk_list() to clear warning. Acked-by: Roman Gushchin Suggested-by: Stephen Rothwell Signed-off-by: Bixuan Cui --- mm/percpu-internal.h | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/mm/percpu-internal.h b/mm/percpu

Re: [PATCH v3] mm/percpu: fix 'defined but not used' warning

On 2020/7/15 9:50, Stephen Rothwell wrote: > I have added this patch to linux-next today. thanks.

[PATCH] usb: usbtest: reduce stack usage in test_queue

Fix the warning: [-Werror=-Wframe-larger-than=] drivers/usb/misc/usbtest.c: In function 'test_queue': drivers/usb/misc/usbtest.c:2148:1: warning: the frame size of 1232 bytes is larger than 1024 bytes Reported-by: kbuild test robot Signed-off-by: Bixuan Cui --- drivers/usb/misc/usbtest.c | 10

Re: [PATCH] net: neterion: vxge: reduce stack usage in VXGE_COMPLETE_VPATH_TX

On 2020/7/20 1:05, Stephen Hemminger wrote: > On Thu, 16 Jul 2020 17:32:47 + > Bixuan Cui wrote: > >> Fix the warning: [-Werror=-Wframe-larger-than=] >> >> drivers/net/ethernet/neterion/vxge/vxge-main.c: >> In function'VXGE_COMPLETE_VPATH_TX.isra.37': >

[PATCH v2] net: neterion: vxge: reduce stack usage in VXGE_COMPLETE_VPATH_TX

is appropriate that won't have much impact on performance and functionality. Signed-off-by: Bixuan Cui Signed-off-by: Stephen Hemminger --- v2: Dropping the NR_SKB_COMPLETED to 16. drivers/net/ethernet/neterion/vxge/vxge-main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git

[PATCH] media: tuners: reduce stack usage in mxl5005s_reconfigure

Fix the warning: [-Werror=-Wframe-larger-than=] drivers/media/tuners/mxl5005s.c: In function 'mxl5005s_reconfigure': drivers/media/tuners/mxl5005s.c:3953:1: warning: the frame size of 1152 bytes is larger than 1024 bytes Signed-off-by: Bixuan Cui --- drivers/media/tuners/mxl5005s.c | 20

[PATCH] net: neterion: vxge: reduce stack usage in VXGE_COMPLETE_VPATH_TX

Fix the warning: [-Werror=-Wframe-larger-than=] drivers/net/ethernet/neterion/vxge/vxge-main.c: In function'VXGE_COMPLETE_VPATH_TX.isra.37': drivers/net/ethernet/neterion/vxge/vxge-main.c:119:1: warning: the frame size of 1056 bytes is larger than 1024 bytes Signed-off-by: Bixuan Cui

Re: [PATCH] net: neterion: vxge: reduce stack usage in VXGE_COMPLETE_VPATH_TX

On 2020/7/16 17:46, Joe Perches wrote: > I doubt this is a good idea. > Check the callers interrupt status. yes, it's not good idea to alloc memory in interrupt handler, I will think more while fix warning. :) Thanks.

[PATCH -next v2] usb: usbtest: reduce stack usage in test_queue

Fix the warning: [-Werror=-Wframe-larger-than=] drivers/usb/misc/usbtest.c: In function 'test_queue': drivers/usb/misc/usbtest.c:2148:1: warning: the frame size of 1232 bytes is larger than 1024 bytes Reported-by: kbuild test robot Signed-off-by: Bixuan Cui --- drivers/usb/misc/usbtest.c | 10

[PATCH -next v2] media: tuners: reduce stack usage in mxl5005s_reconfigure

Fix the warning: [-Werror=-Wframe-larger-than=] drivers/media/tuners/mxl5005s.c: In function 'mxl5005s_reconfigure': drivers/media/tuners/mxl5005s.c:3953:1: warning: the frame size of 1152 bytes is larger than 1024 bytes Signed-off-by: Bixuan Cui --- drivers/media/tuners/mxl5005s.c | 20

[PATCH -next v2] usb: usbtest: reduce stack usage in test_queue

Fix the warning: [-Werror=-Wframe-larger-than=] drivers/usb/misc/usbtest.c: In function 'test_queue': drivers/usb/misc/usbtest.c:2148:1: warning: the frame size of 1232 bytes is larger than 1024 bytes Reported-by: kbuild test robot Acked-by: Alan Stern Signed-off-by: Bixuan Cui --- v2: Change

Re: [PATCH -next v2] usb: usbtest: reduce stack usage in test_queue

Fix the warning: [-Werror=-Wframe-larger-than=] drivers/usb/misc/usbtest.c: In function 'test_queue': drivers/usb/misc/usbtest.c:2148:1: warning: the frame size of 1232 bytes is larger than 1024 bytes Reported-by: kbuild test robot Acked-by: Alan Stern Signed-off-by: Bixuan Cui --- v2: Change

Re: [PATCH -next v2] usb: usbtest: reduce stack usage in test_queue

On 2020/7/16 22:26, Greg KH wrote: >> Reported-by: kbuild test robot >> Signed-off-by: Bixuan Cui >> --- >> drivers/usb/misc/usbtest.c | 10 +- >> 1 file changed, 9 insertions(+), 1 deletion(-) > What changed from v1? Always put that below the --- li

[PATCH] mm/percpu: mark pcpu_chunk_type() as __maybe_unused

() as __maybe_unused to make it clear. Signed-off-by: Bixuan Cui --- mm/percpu-internal.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/percpu-internal.h b/mm/percpu-internal.h index 7983455842ff..8a8a230bd957 100644 --- a/mm/percpu-internal.h +++ b/mm/percpu-internal.h

Re: [PATCH] mm/percpu: mark pcpu_chunk_type() as __maybe_unused

On 2020/7/14 20:53, Stephen Rothwell wrote: > Hi Bixuan, > > On Tue, 14 Jul 2020 13:41:01 +0000 Bixuan Cui wrote: >> Gcc report the following warning without CONFIG_MEMCG_KMEM: >> >> mm/percpu-internal.h:145:29: warning: ‘pcpu_chunk_type’ defined >> but not us

[PATCH v2] mm/percpu: fix 'defined but not used' warning

' to pcpu_chunk_type(),pcpu_is_memcg_chunk() and pcpu_chunk_list() to clear warning. Fixes: 26c99879ef01 ("mm: memcg/percpu: account percpu memory to memory cgroups") Signed-off-by: Stephen Rothwell Signed-off-by: Bixuan Cui --- mm/percpu-internal.h | 10 +- 1 file changed, 5 insert

Re: [PATCH v2] mm/percpu: fix 'defined but not used' warning

On 2020/7/14 21:34, Bixuan Cui wrote: > mm/percpu-internal.h:145:29: warning: ‘pcpu_chunk_type’ defined > but not used [-Wunused-function] Please ignore this email, I will resend the v2 patch.

[PATCH v2] mm/percpu: fix 'defined but not used' warning

' to pcpu_chunk_type(),pcpu_is_memcg_chunk() and pcpu_chunk_list() to clear warning. Fixes: 26c99879ef01 ("mm: memcg/percpu: account percpu memory to memory cgroups") Signed-off-by: Stephen Rothwell Signed-off-by: Bixuan Cui --- mm/percpu-internal.h | 10 +- 1 file changed, 5 insert

[PATCH 0/2] perf tools: add 'perf irq' to measure the hardware interrupts

--- acpi | [0016] | 0.18 s | 6631263.085787 s | 6631263.085805 s Bixuan Cui (2): perf tools: add 'perf irq' to measure the hardware interrupts perf tools: Add documentation for 'perf irq' command tools/perf/Build | 1

[PATCH 2/2] perf tools: Add documentation for 'perf irq' command

Add documentation for 'perf irq' command. Signed-off-by: Bixuan Cui --- tools/perf/Documentation/perf-irq.txt | 58 +++ tools/perf/command-list.txt | 1 + 2 files changed, 59 insertions(+) create mode 100644 tools/perf/Documentation/perf-irq.txt diff --git

[PATCH 1/2] perf tools: add 'perf irq' to measure the hardware interrupts

by each hardware interrupt processing function. Signed-off-by: Bixuan Cui --- tools/perf/Build | 1 + tools/perf/builtin-irq.c | 288 +++ tools/perf/builtin.h | 1 + tools/perf/perf.c| 1 + 4 files changed, 291 insertions(+) create

Re: [PATCH v3 1/2] perf tools: add 'perf irq' to measure the hardware interrupts

On 2021/1/27 15:37, Namhyung Kim wrote: > Note that strncpy doesn't guarantee the NUL-termination. > You'd better do it by yourself just in case. Thanks， I'll fix these bugs. > > Thanks, > Namhyung

[PATCH] s390/pci: move ioremap/ioremap_prot/ioremap_wc/ioremap_wt/iounmap to arch/s390/mm/ioremap.c

:(.text+0xcb8): undefined reference to `iounmap' Add arch/s390/mm/ioremap.c file and move ioremap/ioremap_wc/ioremap_rt/iounmap to it to fix the error. Reported-by: kernel test robot Signed-off-by: Bixuan Cui --- arch/s390/include/asm/io.h | 8 ++--- arch/s390/mm/Makefile | 2 +- arch/s390

[PATCH] media: Fix compilation error

Fix the error: drivers/staging/media/tegra-video/vi.c:1180:4: error: implicit declaration of function 'host1x_syncpt_free' [-Werror,-Wimplicit-function-declaration] Fixes: 3028a00c55bf ('gpu: host1x: Cleanup and refcounting for syncpoints') Reported-by: Hulk Robot Signed-off-by: Bixuan Cui

[PATCH] ASoC: tegra: fix build warning

: add tegra30-ahub driver') Fixes: 4fb0384f3dc6 ('ASoC: tegra: add tegra30-i2s driver') Reported-by: Hulk Robot Signed-off-by: Bixuan Cui --- sound/soc/tegra/tegra20_i2s.c | 4 ++-- sound/soc/tegra/tegra30_ahub.c | 4 ++-- sound/soc/tegra/tegra30_i2s.c | 4 ++-- 3 files changed, 6 insertions

[PATCH -next] e1000e: Fix 'defined but not used' warning

Fix the warning while disable CONFIG_PM_SLEEP: drivers/net/ethernet/intel/e1000e/netdev.c:6926:12: warning: ‘e1000e_pm_prepare’ defined but not used [-Wunused-function] static int e1000e_pm_prepare(struct device *dev) ^ Signed-off-by: Bixuan Cui --- drivers/net

[PATCH -next] drm/rockchip: remove unused variable 'old_state'

Fix the warning: drivers/gpu/drm/rockchip/rockchip_drm_vop.c:882:26:warning: unused variable ‘old_state’ [-Wunused-variable] struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, Signed-off-by: Bixuan Cui --- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 2 -- 1

Re: [PATCH v4 0/2] perf tools: add 'perf irq' to measure the hardware interrupts

On 2021/2/24 20:45, Jiri Olsa wrote: > hi, > I can't apply this on later Arnaldo's perf/core, > what commit/branch is this based one? Thanks，I check it. > > thanks, > jirka

[PATCH v5 1/2] perf tools: add 'perf irq' to measure the hardware interrupts

hardware interrupt processing function. Signed-off-by: Bixuan Cui --- tools/perf/Build | 1 + tools/perf/builtin-irq.c | 260 +++ tools/perf/builtin.h | 1 + tools/perf/perf.c| 1 + 4 files changed, 263 insertions(+) create mode

[PATCH v5 0/2] perf tools: add 'perf irq' to measure the hardware interrupts

e ' to 'perf irq report '; * Fix a error for tools/perf/Documentation/perf-irq.txt; Bixuan Cui (2): perf tools: add 'perf irq' to measure the hardware interrupts perf tools: Add documentation for 'perf irq' command tools/perf/Build | 1 + tools/perf/Documentation/perf-irq.txt

[PATCH v5 2/2] perf tools: Add documentation for 'perf irq' command

Add documentation for 'perf irq' command. Signed-off-by: Bixuan Cui --- tools/perf/Documentation/perf-irq.txt | 47 +++ tools/perf/command-list.txt | 1 + 2 files changed, 48 insertions(+) create mode 100644 tools/perf/Documentation/perf-irq.txt diff --git

[PATCH] drm/vc4: Fix PM reference leak in vc4_vec_encoder_enable()

The pm_runtime_get_sync will increment pm usage counter even it failed.Thus a pairing decrement is needed. Change pm_runtime_get_sync to pm_runtime_resume_and_get for keeping usage counter balanced. Reported-by: Hulk Robot Signed-off-by: Bixuan Cui --- drivers/gpu/drm/vc4/vc4_vec.c | 2 +- 1

[PATCH] usb: dwc3: qcom: Fixed an issue that the ret value is incorrect in dwc3_qcom_probe()

ted-by: Hulk Robot Signed-off-by: Bixuan Cui --- drivers/usb/dwc3/dwc3-qcom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index e37cc58dfa55..4716ca8c753d 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/d

[PATCH -next] powerpc/powernv: make symbol 'mpipl_kobj' static

The sparse tool complains as follows: arch/powerpc/platforms/powernv/opal-core.c:74:16: warning: symbol 'mpipl_kobj' was not declared. This symbol is not used outside of opal-core.c, so marks it static. Reported-by: Hulk Robot Signed-off-by: Bixuan Cui --- arch/powerpc/platforms/powernv

[PATCH -next] powerpc/pseries: Make symbol '__pcpu_scope_hcall_stats' static

-by: Bixuan Cui --- arch/powerpc/platforms/pseries/hvCall_inst.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/pseries/hvCall_inst.c b/arch/powerpc/platforms/pseries/hvCall_inst.c index 2c59b4986ea5..3a50612a78db 100644 --- a/arch/powerpc/platforms/pseries

[PATCH -next] powerpc/perf: Make symbol 'isa207_pmu_format_attr' static

The sparse tool complains as follows: arch/powerpc/perf/isa207-common.c:24:18: warning: symbol 'isa207_pmu_format_attr' was not declared. Should it be static? This symbol is not used outside of isa207-common.c, so this commit marks it static. Reported-by: Hulk Robot Signed-off-by: Bixuan Cui

[PATCH -next] powerpc/perf/hv-24x7: Make some symbols static

'__pcpu_scope_hv_24x7_resb' was not declared. Should it be static? This symbol is not used outside of hv-24x7.c, so this commit marks it static. Reported-by: Hulk Robot Signed-off-by: Bixuan Cui --- arch/powerpc/perf/hv-24x7.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/powerpc

Re: [PATCH] s390/pci: move ioremap/ioremap_prot/ioremap_wc/ioremap_wt/iounmap to arch/s390/mm/ioremap.c

ts and should actually function without CONFIG_PCI. > The weird part though is that for anyone using it without CONFIG_PCI it > would stop working if that is set and the machine doesn't have MIO > support but would work if it does. Well, Maybe it's better not to change it.And thank you for t

Re: [PATCH] media: Fix compilation error

solved. Yes,this build error has been fixed in the next-20210407. Thanks， Bixuan Cui

[PATCH -next] usb: musb: fix PM reference leak in musb_irq_work()

pm_runtime_get_sync will increment pm usage counter even it failed. thus a pairing decrement is needed. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Reported-by: Hulk Robot Signed-off-by: Bixuan Cui --- drivers/usb/musb/musb_core.c | 2 +- 1 file

Re: [PATCH] usb: dwc3: qcom: Fixed an issue that the ret value is incorrect in dwc3_qcom_probe()

On 2021/4/9 18:00, Manivannan Sadhasivam wrote: > But this error message can be removed altogether as devm_ioremap_resource() > reports it already. Thank you for your reply. I'll revise it. Thanks, Bixuan Cui

[PATCH -next] usb: dwc3: qcom: Remove redundant dev_err call in dwc3_qcom_probe()

There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Reported-by: Hulk Robot Signed-off-by: Bixuan Cui --- drivers/usb/dwc3/dwc3-qcom.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b

[PATCH -next] nvmem: sprd: Add missing MODULE_DEVICE_TABLE

This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot Signed-off-by: Bixuan Cui --- drivers/nvmem/sprd-efuse.c | 1 + 1 file changed, 1 insertion(+) diff

[PATCH -next] staging: ralink-gdma: Add missing MODULE_DEVICE_TABLE

This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot Signed-off-by: Bixuan Cui --- drivers/staging/ralink-gdma/ralink-gdma.c | 1 + 1 file changed, 1

[PATCH] usb: core: hub: Fix PM reference leak in usb_port_resume()

pm_runtime_get_sync will increment pm usage counter even it failed. thus a pairing decrement is needed. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Reported-by: Hulk Robot Signed-off-by: Bixuan Cui --- drivers/usb/core/hub.c | 2 +- 1 file changed, 1

[PATCH -next] PCI: remove unused variable rdev

/resume path') Signed-off-by: Bixuan Cui --- drivers/pci/quirks.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 2e24dced699a..c86ede081534 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -309,8 +309,6

Re: [PATCH v3 1/2] perf tools: add 'perf irq' to measure the hardware interrupts

step, but parsing the ASCII output is tortuous. > Good idea. In fact, I plan to output part of (maximum) data. I'll consider adding '--format csv*' option. Thanks Bixuan Cui > hgn

[PATCH v4 2/2] perf tools: Add documentation for 'perf irq' command

Add documentation for 'perf irq' command. Signed-off-by: Bixuan Cui --- tools/perf/Documentation/perf-irq.txt | 47 +++ tools/perf/command-list.txt | 1 + 2 files changed, 48 insertions(+) create mode 100644 tools/perf/Documentation/perf-irq.txt diff --git

[PATCH v4 0/2] perf tools: add 'perf irq' to measure the hardware interrupts

umentation/perf-irq.txt; Bixuan Cui (2): perf tools: add 'perf irq' to measure the hardware interrupts perf tools: Add documentation for 'perf irq' command tools/perf/Build | 1 + tools/perf/Documentation/perf-irq.txt | 47 + tools/perf/builtin-i

[PATCH v4 1/2] perf tools: add 'perf irq' to measure the hardware interrupts

hardware interrupt processing function. Signed-off-by: Bixuan Cui --- tools/perf/Build | 1 + tools/perf/builtin-irq.c | 260 +++ tools/perf/builtin.h | 1 + tools/perf/perf.c| 1 + 4 files changed, 263 insertions(+) create mode

Re: [PATCH -next v6 0/2] Make memory reclamation measurable

ping~ 在 2024/1/5 9:36, Bixuan Cui 写道: When the system memory is low, kswapd reclaims the memory. The key steps of memory reclamation include 1.shrink_lruvec * shrink_active_list, moves folios from the active LRU to the inactive LRU * shrink_inactive_list, shrink lru from inactive LRU list

Re: [PATCH -next v6 0/2] Make memory reclamation measurable

在 2024/2/21 10:22, Steven Rostedt 写道: It's up to the memory management folks to decide on this. -- Steve Noted with thanks. Bixuan Cui

Re: [PATCH -next v6 0/2] Make memory reclamation measurable

ping~ 在 2024/1/5 9:36, Bixuan Cui 写道: When the system memory is low, kswapd reclaims the memory. The key steps of memory reclamation include 1.shrink_lruvec * shrink_active_list, moves folios from the active LRU to the inactive LRU * shrink_inactive_list, shrink lru from inactive LRU list

[PATCH -next v4 2/2] mm: vmscan: add new event to trace shrink lru

|RECLAIM_WB_ASYNC Signed-off-by: Bixuan Cui Reviewed-by: Andrew Morton --- v4: Add Reviewed-by and Changlog to every patch. v2: Modify trace_mm_vmscan_lru_shrink_inactive() in evict_folios() at the same time to fix build error. include/trace/events/vmscan.h | 38

[PATCH -next v4 1/2] mm: shrinker: add new event to trace shrink count

98.317942: mm_shrink_count_start: kfree_rcu_shrink_count.cfi_jt+0x0/0x8 c540ff51: nid: 0 kswapd0-103 [003] . 1098.317951: mm_shrink_count_end: kfree_rcu_shrink_count.cfi_jt+0x0/0x8 c540ff51: nid: 0 freeable:36 Signed-off-by: Bixuan Cui Reviewed-by: Steven Rosted

[PATCH -next v4 0/2] Make memory reclamation measurable

When the system memory is low, kswapd reclaims the memory. The key steps of memory reclamation include 1.shrink_lruvec * shrink_active_list, moves folios from the active LRU to the inactive LRU * shrink_inactive_list, shrink lru from inactive LRU list 2.shrink_slab *

Re: [PATCH -next 2/2] mm: vmscan: add new event to trace shrink lru

CONFIG_LRU_GEN when compiling and testing. I will double check my patches. Thanks Bixuan Cui

Re: [PATCH -next v4 2/2] mm: vmscan: add new event to trace shrink lru

在 2023/12/21 1:54, Yu Zhao 写道: Signed-off-by: Bixuan Cui Reviewed-by: Andrew Morton --- v4: Add Reviewed-by and Changlog to every patch. Where did Andrew provide his Reviewed-by?Hi, I just want to add Reviewed-by to my patch to thank the reveiw of Steven and Andrew.:-) v2: Modify

[PATCH -next 1/2] mm: shrinker: add new event to trace shrink count

98.317942: mm_shrink_count_start: kfree_rcu_shrink_count.cfi_jt+0x0/0x8 c540ff51: nid: 0 kswapd0-103 [003] . 1098.317951: mm_shrink_count_end: kfree_rcu_shrink_count.cfi_jt+0x0/0x8 c540ff51: nid: 0 freeable:36 Signed-off-by: Bixuan Cui --- include/trace/events

[PATCH -next 0/2] Make memory reclamation measurable

From: cuibixuan When the system memory is low, kswapd reclaims the memory. The key steps of memory reclamation include 1.shrink_lruvec * shrink_active_list, moves folios from the active LRU to the inactive LRU * shrink_inactive_list, shrink lru from inactive LRU list 2.shrink_slab *

[PATCH -next 2/2] mm: vmscan: add new event to trace shrink lru

|RECLAIM_WB_ASYNC Signed-off-by: Bixuan Cui --- include/trace/events/vmscan.h | 38 +-- mm/vmscan.c | 8 ++-- 2 files changed, 42 insertions(+), 4 deletions(-) diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h index

[PATCH -next v6 1/2] mm: shrinker: add new event to trace shrink count

98.317942: mm_shrink_count_start: kfree_rcu_shrink_count.cfi_jt+0x0/0x8 c540ff51: nid: 0 kswapd0-103 [003] . 1098.317951: mm_shrink_count_end: kfree_rcu_shrink_count.cfi_jt+0x0/0x8 c540ff51: nid: 0 freeable:36 Signed-off-by: Bixuan Cui Reviewed-by: Steven Rosted

[PATCH -next v6 2/2] mm: vmscan: add new event to trace shrink lru

: mm_vmscan_lru_shrink_inactive_end: nid=0 nr_scanned=32 nr_reclaimed=21 nr_dirty=0 nr_writeback=0 nr_congested=0 nr_immediate=0 nr_activate_anon=0 nr_activate_file=0 nr_ref_keep=11 nr_unmap_fail=0 priority=6 flags=RECLAIM_WB_FILE|RECLAIM_WB_ASYNC Signed-off-by: Bixuan Cui Reviewed-by: Andrew Morton

[PATCH -next v6 0/2] Make memory reclamation measurable

When the system memory is low, kswapd reclaims the memory. The key steps of memory reclamation include 1.shrink_lruvec * shrink_active_list, moves folios from the active LRU to the inactive LRU * shrink_inactive_list, shrink lru from inactive LRU list 2.shrink_slab *

Re: [PATCH -next v6 0/2] Make memory reclamation measurable

ping~ 在 2024/1/5 9:36, Bixuan Cui 写道: When the system memory is low, kswapd reclaims the memory. The key steps of memory reclamation include 1.shrink_lruvec * shrink_active_list, moves folios from the active LRU to the inactive LRU * shrink_inactive_list, shrink lru from inactive LRU list

[PATCH -next v5 2/2] mm: vmscan: add new event to trace shrink lru

: mm_vmscan_lru_shrink_inactive_end: nid=0 nr_scanned=32 nr_reclaimed=21 nr_dirty=0 nr_writeback=0 nr_congested=0 nr_immediate=0 nr_activate_anon=0 nr_activate_file=0 nr_ref_keep=11 nr_unmap_fail=0 priority=6 flags=RECLAIM_WB_FILE|RECLAIM_WB_ASYNC Signed-off-by: Bixuan Cui Reviewed-by: Andrew Morton

[PATCH -next v5 1/2] mm: shrinker: add new event to trace shrink count

98.317942: mm_shrink_count_start: kfree_rcu_shrink_count.cfi_jt+0x0/0x8 c540ff51: nid: 0 kswapd0-103 [003] . 1098.317951: mm_shrink_count_end: kfree_rcu_shrink_count.cfi_jt+0x0/0x8 c540ff51: nid: 0 freeable:36 Signed-off-by: Bixuan Cui Reviewed-by: Steve

[PATCH -next v5 0/2] Make memory reclamation measurable

When the system memory is low, kswapd reclaims the memory. The key steps of memory reclamation include 1.shrink_lruvec * shrink_active_list, moves folios from the active LRU to the inactive LRU * shrink_inactive_list, shrink lru from inactive LRU list 2.shrink_slab *

Re: [PATCH -next v6 0/2] Make memory reclamation measurable

. Have you considered that option? Let me think about it... Thanks Bixuan Cui

Re: [PATCH -next v6 0/2] Make memory reclamation measurable

lower performance impact compared to dynamic tracepoints (BPF kprobe). Thanks Bixuan Cui