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Kernel: Create an entry for viewing interrupts in ProcFS

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Liav A 2020-02-22 20:51:50 +02:00 committed by Andreas Kling
parent e3b24d0478
commit 80eea6cd8b
Notes: sideshowbarker 2024-07-19 09:05:48 +09:00 
Author: https://github.com/supercomputer7
Commit: https://github.com/SerenityOS/serenity/commit/80eea6cd8b7
Pull-request: https://github.com/SerenityOS/serenity/pull/1274
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/shannonbooth
1 changed files with 20 additions and 0 deletions
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20
Kernel/FileSystem/ProcFS.cpp
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@ -39,6 +39,8 @@
#include <Kernel/FileSystem/FileDescription.h>
#include <Kernel/FileSystem/VirtualFileSystem.h>
#include <Kernel/Heap/kmalloc.h>
#include <Kernel/Interrupts/GenericInterruptHandler.h>
#include <Kernel/Interrupts/InterruptManagement.h>
#include <Kernel/KBufferBuilder.h>
#include <Kernel/KParams.h>
#include <Kernel/Module.h>
@ -81,6 +83,7 @@ enum ProcFileType {
FI_Root_cpuinfo,
FI_Root_inodes,
FI_Root_dmesg,
FI_Root_interrupts,
FI_Root_pci,
FI_Root_devices,
FI_Root_uptime,
@ -339,6 +342,22 @@ Optional<KBuffer> procfs$pci(InodeIdentifier)
return builder.build();
}
Optional<KBuffer> procfs$interrupts(InodeIdentifier)
{
KBufferBuilder builder;
JsonArraySerializer array { builder };
InterruptManagement::the().enumerate_interrupt_handlers([&array](GenericInterruptHandler& handler) {
auto obj = array.add_object();
obj.add("purpose", "Interrupt Handler"); // FIXME: Determine the right description for each interrupt handler.
obj.add("interrupt_line", handler.interrupt_number());
obj.add("cpu_handler", 0); // FIXME: Determine the responsible CPU for each interrupt handler.
obj.add("device_sharing", (unsigned)handler.get_sharing_devices_count());
obj.add("call_count", (unsigned)handler.get_invoking_count());
});
array.finish();
return builder.build();
}
Optional<KBuffer> procfs$devices(InodeIdentifier)
{
KBufferBuilder builder;
@ -1590,6 +1609,7 @@ ProcFS::ProcFS()
m_entries[FI_Root_dmesg] = { "dmesg", FI_Root_dmesg, true, procfs$dmesg };
m_entries[FI_Root_self] = { "self", FI_Root_self, false, procfs$self };
m_entries[FI_Root_pci] = { "pci", FI_Root_pci, false, procfs$pci };
m_entries[FI_Root_interrupts] = { "interrupts", FI_Root_interrupts, false, procfs$interrupts };
m_entries[FI_Root_devices] = { "devices", FI_Root_devices, false, procfs$devices };
m_entries[FI_Root_uptime] = { "uptime", FI_Root_uptime, false, procfs$uptime };
m_entries[FI_Root_cmdline] = { "cmdline", FI_Root_cmdline, true, procfs$cmdline };