How do I generate the /sys/kernel/debug/tracing folder in kernel with yocto project?
0
I was tying to use perf on Renesas target and I configured the yocto "local.conf" as showed in this link.
#avoid stripping binaries
INHIBIT_PACKAGE_STRIP = "1"
#add the debug information
EXTRA_IMAGE_FEATURES= "debug-tweaks tools-debug dbg-pkgs tools-profile"
#format the debug info into a readable format for PERF
PACKAGE_DEBUG_SPLIT_STYLE = 'debug-file-directory'
perf is working but I need to monitor the context switches which require to use perf timechart and other commands that depends on perf-events, but the commands can't find this path "/sys/kernel/debug/tracing/events" .
What should I do in order to get this folder and its files compiled with my kernel?
linux-kernel embedded debugging yocto perf
edited Jun 21 '18 at 20:04
Guido
1033
asked Jul 10 '17 at 8:58
gemadgemad
11
add a comment |
0
I was tying to use perf on Renesas target and I configured the yocto "local.conf" as showed in this link.
#avoid stripping binaries
INHIBIT_PACKAGE_STRIP = "1"
#add the debug information
EXTRA_IMAGE_FEATURES= "debug-tweaks tools-debug dbg-pkgs tools-profile"
#format the debug info into a readable format for PERF
PACKAGE_DEBUG_SPLIT_STYLE = 'debug-file-directory'
perf is working but I need to monitor the context switches which require to use perf timechart and other commands that depends on perf-events, but the commands can't find this path "/sys/kernel/debug/tracing/events" .
What should I do in order to get this folder and its files compiled with my kernel?
linux-kernel embedded debugging yocto perf
edited Jun 21 '18 at 20:04
Guido
1033
asked Jul 10 '17 at 8:58
gemadgemad
11
add a comment |
0
0
0
I was tying to use perf on Renesas target and I configured the yocto "local.conf" as showed in this link.
#avoid stripping binaries
INHIBIT_PACKAGE_STRIP = "1"
#add the debug information
EXTRA_IMAGE_FEATURES= "debug-tweaks tools-debug dbg-pkgs tools-profile"
#format the debug info into a readable format for PERF
PACKAGE_DEBUG_SPLIT_STYLE = 'debug-file-directory'
perf is working but I need to monitor the context switches which require to use perf timechart and other commands that depends on perf-events, but the commands can't find this path "/sys/kernel/debug/tracing/events" .
What should I do in order to get this folder and its files compiled with my kernel?
linux-kernel embedded debugging yocto perf
edited Jun 21 '18 at 20:04
Guido
1033
asked Jul 10 '17 at 8:58
gemadgemad
11
I was tying to use perf on Renesas target and I configured the yocto "local.conf" as showed in this link.
#avoid stripping binaries
INHIBIT_PACKAGE_STRIP = "1"
#add the debug information
EXTRA_IMAGE_FEATURES= "debug-tweaks tools-debug dbg-pkgs tools-profile"
#format the debug info into a readable format for PERF
PACKAGE_DEBUG_SPLIT_STYLE = 'debug-file-directory'
perf is working but I need to monitor the context switches which require to use perf timechart and other commands that depends on perf-events, but the commands can't find this path "/sys/kernel/debug/tracing/events" .
What should I do in order to get this folder and its files compiled with my kernel?
linux-kernel embedded debugging yocto perf
linux-kernel embedded debugging yocto perf
edited Jun 21 '18 at 20:04
Guido
1033
asked Jul 10 '17 at 8:58
gemadgemad
11
edited Jun 21 '18 at 20:04
Guido
1033
asked Jul 10 '17 at 8:58
gemadgemad
11
edited Jun 21 '18 at 20:04
Guido
1033
edited Jun 21 '18 at 20:04
Guido
1033
edited Jun 21 '18 at 20:04
Guido
1033
1033
asked Jul 10 '17 at 8:58
gemadgemad
11
asked Jul 10 '17 at 8:58
gemadgemad
11
asked Jul 10 '17 at 8:58
gemadgemad
11
11
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
0
You probably need to mount the debugfs filesystem:
mount -t debugfs none /sys/kernel/debug
If you already have a startup script of your own in /etc/init.d/ it should be possible to add it there, or you might add it to /etc/fstab as
debugfs /sys/kernel/debug debugfs defaults
answered Jul 10 '17 at 9:37
meuhmeuh
32k11954
this folder already mounted but the debug folder have no folders named events
– gemad
Jul 10 '17 at 9:41
Did your kernel get compiled withCONFIG_PERF_EVENTS=y?
– meuh
Jul 10 '17 at 10:06
where should i add this option ?
– gemad
Jul 10 '17 at 10:08
Did you check if it is already there? If not yocto has its own way complex way of handling the kernel config. You need to look for examples of creating your own.bbappendrecipe inrecipes-kernelto add the lineCONFIG_PERF_EVENTS=yto${B}/.configand runyes '' | oe_runmake oldconfig.
– meuh
Jul 10 '17 at 14:20
I did so and recompiled , but still th events folder not exist at the debug folder , only those files and folders do , { asoc, dri, hid, pm_qos, sleep_time, bdi, extfrag, memblock, pwm, suspend_stats, clk , fault_around_bytes, mmc0, regmap ,usb, debug_enabled, gcov, opp, regulator, virtio-ports, dma_buf, gpio, pinctrl, sched_features, wakeup_sources }
– gemad
Jul 11 '17 at 7:32
|
show 2 more comments
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1 Answer
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oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
You probably need to mount the debugfs filesystem:
mount -t debugfs none /sys/kernel/debug
If you already have a startup script of your own in /etc/init.d/ it should be possible to add it there, or you might add it to /etc/fstab as
debugfs /sys/kernel/debug debugfs defaults
answered Jul 10 '17 at 9:37
meuhmeuh
32k11954
this folder already mounted but the debug folder have no folders named events
– gemad
Jul 10 '17 at 9:41
Did your kernel get compiled withCONFIG_PERF_EVENTS=y?
– meuh
Jul 10 '17 at 10:06
where should i add this option ?
– gemad
Jul 10 '17 at 10:08
Did you check if it is already there? If not yocto has its own way complex way of handling the kernel config. You need to look for examples of creating your own.bbappendrecipe inrecipes-kernelto add the lineCONFIG_PERF_EVENTS=yto${B}/.configand runyes '' | oe_runmake oldconfig.
– meuh
Jul 10 '17 at 14:20
I did so and recompiled , but still th events folder not exist at the debug folder , only those files and folders do , { asoc, dri, hid, pm_qos, sleep_time, bdi, extfrag, memblock, pwm, suspend_stats, clk , fault_around_bytes, mmc0, regmap ,usb, debug_enabled, gcov, opp, regulator, virtio-ports, dma_buf, gpio, pinctrl, sched_features, wakeup_sources }
– gemad
Jul 11 '17 at 7:32
|
show 2 more comments
0
You probably need to mount the debugfs filesystem:
mount -t debugfs none /sys/kernel/debug
If you already have a startup script of your own in /etc/init.d/ it should be possible to add it there, or you might add it to /etc/fstab as
debugfs /sys/kernel/debug debugfs defaults
answered Jul 10 '17 at 9:37
meuhmeuh
32k11954
this folder already mounted but the debug folder have no folders named events
– gemad
Jul 10 '17 at 9:41
Did your kernel get compiled withCONFIG_PERF_EVENTS=y?
– meuh
Jul 10 '17 at 10:06
where should i add this option ?
– gemad
Jul 10 '17 at 10:08
Did you check if it is already there? If not yocto has its own way complex way of handling the kernel config. You need to look for examples of creating your own.bbappendrecipe inrecipes-kernelto add the lineCONFIG_PERF_EVENTS=yto${B}/.configand runyes '' | oe_runmake oldconfig.
– meuh
Jul 10 '17 at 14:20
I did so and recompiled , but still th events folder not exist at the debug folder , only those files and folders do , { asoc, dri, hid, pm_qos, sleep_time, bdi, extfrag, memblock, pwm, suspend_stats, clk , fault_around_bytes, mmc0, regmap ,usb, debug_enabled, gcov, opp, regulator, virtio-ports, dma_buf, gpio, pinctrl, sched_features, wakeup_sources }
– gemad
Jul 11 '17 at 7:32
|
show 2 more comments
0
0
0
You probably need to mount the debugfs filesystem:
mount -t debugfs none /sys/kernel/debug
If you already have a startup script of your own in /etc/init.d/ it should be possible to add it there, or you might add it to /etc/fstab as
debugfs /sys/kernel/debug debugfs defaults
answered Jul 10 '17 at 9:37
meuhmeuh
32k11954
You probably need to mount the debugfs filesystem:
mount -t debugfs none /sys/kernel/debug
If you already have a startup script of your own in /etc/init.d/ it should be possible to add it there, or you might add it to /etc/fstab as
debugfs /sys/kernel/debug debugfs defaults
answered Jul 10 '17 at 9:37
meuhmeuh
32k11954
answered Jul 10 '17 at 9:37
meuhmeuh
32k11954
answered Jul 10 '17 at 9:37
meuhmeuh
32k11954
answered Jul 10 '17 at 9:37
meuhmeuh
32k11954
32k11954
this folder already mounted but the debug folder have no folders named events
– gemad
Jul 10 '17 at 9:41
Did your kernel get compiled withCONFIG_PERF_EVENTS=y?
– meuh
Jul 10 '17 at 10:06
where should i add this option ?
– gemad
Jul 10 '17 at 10:08
Did you check if it is already there? If not yocto has its own way complex way of handling the kernel config. You need to look for examples of creating your own.bbappendrecipe inrecipes-kernelto add the lineCONFIG_PERF_EVENTS=yto${B}/.configand runyes '' | oe_runmake oldconfig.
– meuh
Jul 10 '17 at 14:20
I did so and recompiled , but still th events folder not exist at the debug folder , only those files and folders do , { asoc, dri, hid, pm_qos, sleep_time, bdi, extfrag, memblock, pwm, suspend_stats, clk , fault_around_bytes, mmc0, regmap ,usb, debug_enabled, gcov, opp, regulator, virtio-ports, dma_buf, gpio, pinctrl, sched_features, wakeup_sources }
– gemad
Jul 11 '17 at 7:32
|
show 2 more comments
this folder already mounted but the debug folder have no folders named events
– gemad
Jul 10 '17 at 9:41
Did your kernel get compiled withCONFIG_PERF_EVENTS=y?
– meuh
Jul 10 '17 at 10:06
where should i add this option ?
– gemad
Jul 10 '17 at 10:08
Did you check if it is already there? If not yocto has its own way complex way of handling the kernel config. You need to look for examples of creating your own.bbappendrecipe inrecipes-kernelto add the lineCONFIG_PERF_EVENTS=yto${B}/.configand runyes '' | oe_runmake oldconfig.
– meuh
Jul 10 '17 at 14:20
I did so and recompiled , but still th events folder not exist at the debug folder , only those files and folders do , { asoc, dri, hid, pm_qos, sleep_time, bdi, extfrag, memblock, pwm, suspend_stats, clk , fault_around_bytes, mmc0, regmap ,usb, debug_enabled, gcov, opp, regulator, virtio-ports, dma_buf, gpio, pinctrl, sched_features, wakeup_sources }
– gemad
Jul 11 '17 at 7:32
this folder already mounted but the debug folder have no folders named events
– gemad
Jul 10 '17 at 9:41
this folder already mounted but the debug folder have no folders named events
– gemad
Jul 10 '17 at 9:41
Did your kernel get compiled with
CONFIG_PERF_EVENTS=y ?– meuh
Jul 10 '17 at 10:06
Did your kernel get compiled with
CONFIG_PERF_EVENTS=y ?– meuh
Jul 10 '17 at 10:06
where should i add this option ?
– gemad
Jul 10 '17 at 10:08
where should i add this option ?
– gemad
Jul 10 '17 at 10:08
Did you check if it is already there? If not yocto has its own way complex way of handling the kernel config. You need to look for examples of creating your own
.bbappend recipe in recipes-kernel to add the line CONFIG_PERF_EVENTS=y to ${B}/.config and run yes '' | oe_runmake oldconfig.– meuh
Jul 10 '17 at 14:20
Did you check if it is already there? If not yocto has its own way complex way of handling the kernel config. You need to look for examples of creating your own
.bbappend recipe in recipes-kernel to add the line CONFIG_PERF_EVENTS=y to ${B}/.config and run yes '' | oe_runmake oldconfig.– meuh
Jul 10 '17 at 14:20
I did so and recompiled , but still th events folder not exist at the debug folder , only those files and folders do , { asoc, dri, hid, pm_qos, sleep_time, bdi, extfrag, memblock, pwm, suspend_stats, clk , fault_around_bytes, mmc0, regmap ,usb, debug_enabled, gcov, opp, regulator, virtio-ports, dma_buf, gpio, pinctrl, sched_features, wakeup_sources }
– gemad
Jul 11 '17 at 7:32
I did so and recompiled , but still th events folder not exist at the debug folder , only those files and folders do , { asoc, dri, hid, pm_qos, sleep_time, bdi, extfrag, memblock, pwm, suspend_stats, clk , fault_around_bytes, mmc0, regmap ,usb, debug_enabled, gcov, opp, regulator, virtio-ports, dma_buf, gpio, pinctrl, sched_features, wakeup_sources }
– gemad
Jul 11 '17 at 7:32
|
show 2 more comments
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