Andreas Kling b32e961a84 Kernel: Implement a simple process time profiler ... The kernel now supports basic profiling of all the threads in a process by calling profiling_enable(pid_t). You finish the profiling by calling profiling_disable(pid_t). This all works by recording thread stacks when the timer interrupt fires and the current thread is in a process being profiled. Note that symbolication is deferred until profiling_disable() to avoid adding more noise than necessary to the profile. A simple "/bin/profile" command is included here that can be used to start/stop profiling like so: $ profile 10 on ... wait ... $ profile 10 off After a profile has been recorded, it can be fetched in /proc/profile There are various limits (or "bugs") on this mechanism at the moment: - Only one process can be profiled at a time. - We allocate 8MB for the samples, if you use more space, things will not work, and probably break a bit. - Things will probably fall apart if the profiled process dies during profiling, or while extracing /proc/profile		2019-12-11 20:36:56 +01:00
..
Arch/i386	Kernel: Break out of the idle loop on WaitQueue wake instead of on IRQ	2019-12-08 00:33:35 +01:00
Devices	Kernel: Give PTY's *actually* unique major ID's	2019-12-09 21:03:39 +01:00
FileSystem	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
Heap	Kernel: Demangle userspace ELF symbols in backtraces	2019-11-27 14:06:24 +01:00
Net	AK: SinglyLinkedList::size_slow() should return size_t	2019-12-09 17:51:21 +01:00
TTY	Kernel: Give PTY's *actually* unique major ID's	2019-12-09 21:03:39 +01:00
VM	Kernel: Move VMObject::for_each_region() to MemoryManager.h	2019-12-09 20:06:03 +01:00
.bochsrc	Meta: Make Serenity run on Bochs once again	2019-08-06 21:09:24 +02:00
.gitignore	Meta: Removed all gitignore in the source tree only keeping the root one	2019-06-30 10:41:26 +02:00
Assertions.h	Kernel: Move i386.{cpp,h} => Arch/i386/CPU.{cpp,h}	2019-06-07 20:02:01 +02:00
build-gpt-image-grub.sh	Build: Fix more bugs in the POSIX sh-ification of scripts	2019-11-03 13:11:43 +01:00
build-image-grub.sh	Build: Bump the default disk image size from 500MB to 600MB	2019-11-26 12:54:33 +01:00
build-image-qemu.sh	Build: Bump the default disk image size from 500MB to 600MB	2019-11-26 12:54:33 +01:00
build-root-filesystem.sh	MenuApplets: Add CPUGraph, our first menu applet :^)	2019-12-05 19:38:08 +01:00
CMOS.cpp	AK: Rename the common integer typedefs to make it obvious what they are.	2019-07-03 21:20:13 +02:00
CMOS.h	AK: Rename the common integer typedefs to make it obvious what they are.	2019-07-03 21:20:13 +02:00
Console.cpp	Kernel: Make File's can_read/can_write take a const FileDescription&	2019-11-04 14:03:14 +01:00
Console.h	Kernel: Make File's can_read/can_write take a const FileDescription&	2019-11-04 14:03:14 +01:00
DoubleBuffer.cpp	Revert "Kernel: Make DoubleBuffer use a KBuffer instead of kmalloc()ing"	2019-10-18 15:58:06 +02:00
DoubleBuffer.h	Revert "Kernel: Make DoubleBuffer use a KBuffer instead of kmalloc()ing"	2019-10-18 15:58:06 +02:00
FB.h	Kernel: Add framebuffer ioctls; wrap raw ioctls with a C API	2019-08-18 07:40:02 +02:00
grub_gpt.cfg	PartitionTable: Initial GPT Support, Adding Block Limit	2019-10-07 10:11:39 +02:00
grub.cfg	Kernel: Add serial_debug cmdline parameter	2019-08-11 08:22:42 +02:00
init.cpp	Kernel: Use a WaitQueue to implement finalizer wakeup	2019-12-01 19:17:17 +01:00
install.sh	POSIX compliance: (most) shell scripts converted to generic shell	2019-11-03 09:26:22 +01:00
IO.h	Kernel: First cut of a sb16 driver	2019-07-13 08:00:24 +02:00
IRQHandler.cpp	Kernel: Move PIC.cpp into Arch/i386/	2019-07-09 15:04:43 +02:00
IRQHandler.h	AK: Rename the common integer typedefs to make it obvious what they are.	2019-07-03 21:20:13 +02:00
KBuffer.h	Kernel: Make Region single-owner instead of ref-counted	2019-09-27 14:25:42 +02:00
KBufferBuilder.cpp	Kernel: Add KBufferBuilder, similar to StringBuilder but for KBuffer	2019-08-06 20:04:12 +02:00
KBufferBuilder.h	AK: Rename <AK/AKString.h> to <AK/String.h>	2019-09-06 15:36:54 +02:00
KeyCode.h	AK: Rename the common integer typedefs to make it obvious what they are.	2019-07-03 21:20:13 +02:00
KParams.cpp	AK: Make HashMap::get(Key) return an Optional<Value>.	2019-07-24 10:25:43 +02:00
KParams.h	AK: Rename <AK/AKString.h> to <AK/String.h>	2019-09-06 15:36:54 +02:00
kprintf.cpp	Kernel: Demangle userspace ELF symbols in backtraces	2019-11-27 14:06:24 +01:00
KResult.h	Kernel: Align the KResult value storage appropriately.	2019-08-02 19:22:48 +02:00
kstdio.h	Kernel: Demangle userspace ELF symbols in backtraces	2019-11-27 14:06:24 +01:00
KSyms.cpp	Kernel: Demangle kernel C++ symbols correctly again	2019-11-29 14:59:15 +01:00
KSyms.h	Kernel: Allow modules to link against anything in kernel.map :^)	2019-11-28 21:30:20 +01:00
linker.ld	Revert "Kernel: Move Kernel mapping to 0xc0000000"	2019-11-23 17:27:09 +01:00
Lock.cpp	Kernel: Use a dedicated thread state for wait-queued threads	2019-12-01 16:02:58 +01:00
Lock.h	Kernel: Add a WaitQueue for Thread queueing/waking and use it for Lock	2019-12-01 12:07:43 +01:00
makeall.sh	MenuApplets: Add CPUGraph, our first menu applet :^)	2019-12-05 19:38:08 +01:00
Makefile	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
mkmap.sh	Kernel: Allow modules to link against anything in kernel.map :^)	2019-11-28 21:30:20 +01:00
Module.h	Kernel: Implement basic module unloading :^)	2019-11-28 21:07:22 +01:00
MousePacket.h	AK: Rename the common integer typedefs to make it obvious what they are.	2019-07-03 21:20:13 +02:00
Multiboot.h	AK: Rename the common integer typedefs to make it obvious what they are.	2019-07-03 21:20:13 +02:00
PCI.cpp	Kernel: Hide PCI logs behind a debug flag like other logs	2019-08-14 06:28:53 +02:00
PCI.h	Kernel: Add more PCI configuration reading functions	2019-08-14 06:28:53 +02:00
Process.cpp	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
Process.h	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
ProcessTracer.cpp	AK: Rename the common integer typedefs to make it obvious what they are.	2019-07-03 21:20:13 +02:00
ProcessTracer.h	Kernel: Make File's can_read/can_write take a const FileDescription&	2019-11-04 14:03:14 +01:00
Profiling.cpp	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
Profiling.h	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
RTC.cpp	Kernel: Fix BIOS date/time on hardware	2019-09-28 13:59:49 +02:00
RTC.h	Add clang-format file	2019-05-28 17:31:20 +02:00
run	run: Unbreak this script when running with a regular Bourne /bin/sh	2019-11-13 21:57:51 +01:00
Scheduler.cpp	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
Scheduler.h	Kernel: Use a WaitQueue to implement finalizer wakeup	2019-12-01 19:17:17 +01:00
SharedBuffer.cpp	Kernel: Teach Region how to remap itself	2019-11-03 21:11:08 +01:00
SharedBuffer.h	Kernel+LibC: Make all SharedBuffers purgeable (default: non-volatile)	2019-12-09 20:06:47 +01:00
StdLib.cpp	Kernel: Demangle userspace ELF symbols in backtraces	2019-11-27 14:06:24 +01:00
StdLib.h	Kernel: Add strncmp()	2019-08-11 16:30:43 +02:00
sync.sh	Build: Make sure PATH is passed properly (#765)	2019-11-12 10:26:50 +01:00
Syscall.cpp	Kernel: Disallow syscalls from writeable memory	2019-11-29 16:30:05 +01:00
Syscall.h	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
TestModule.cpp	Kernel: Have modules export their name in a "module_name" string	2019-11-29 21:31:17 +01:00
Thread.cpp	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
Thread.h	Kernel: Implement a simple process time profiler	2019-12-11 20:36:56 +01:00
UnixTypes.h	Kernel: Start implementing purgeable memory support	2019-12-09 19:12:38 +01:00
WaitQueue.cpp	Kernel: Break out of the idle loop on WaitQueue wake instead of on IRQ	2019-12-08 00:33:35 +01:00
WaitQueue.h	Kernel: Add a WaitQueue for Thread queueing/waking and use it for Lock	2019-12-01 12:07:43 +01:00