geerlingguy/linux
Jul 2025 – Aug 2025
2 Months active
Languages Used
C
Technical Skills
Device DriversEmbedded SystemsKernel DevelopmentRISC-V ArchitectureACPI
Anup Patel
PROFILE
Anup Patel
Contributed to the geerlingguy/linux repository by developing a kernel parameter that allows users to disable IMSIC software-injected IPIs, reducing MMIO trap overhead and improving trap latency for RISC-V IMSIC configurations. This feature enhanced performance predictability and hardware compatibility in edge and cloud environments. Additionally, addressed a critical bug in the RISC-V ACPI driver by correcting error handling for FFH_CPPC_CSR operations, ensuring accurate hardware error reporting and improving reliability. The work involved kernel development and device driver expertise, leveraging C and a deep understanding of embedded systems and RISC-V architecture to deliver targeted, maintainable improvements to Linux kernel code.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
39
Activity Months2
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Work History
August 2025
1 Commits
Aug 1, 2025August 2025: Delivered a critical bug fix to the RISC-V ACPI FFH_CPPC_CSR error handling in geerlingguy/linux. The fix uses the raw Linux errno from cppc_ffh_csr_read() and cppc_ffh_csr_write() instead of mapping through sbi_err_map_linux_errno(), correcting error propagation and ensuring hardware errors are reported accurately by the driver. The change was committed as ACPI: RISC-V: Fix FFH_CPPC_CSR error handling (5b3706597b90a7b6c9ae148edd07a43531dcd49e). No new features introduced in this iteration; primary focus was reliability and correctness under RISC-V ACPI.
1 Commits
Aug 1, 2025August 2025: Delivered a critical bug fix to the RISC-V ACPI FFH_CPPC_CSR error handling in geerlingguy/linux. The fix uses the raw Linux errno from cppc_ffh_csr_read() and cppc_ffh_csr_write() instead of mapping through sbi_err_map_linux_errno(), correcting error propagation and ensuring hardware errors are reported accurately by the driver. The change was committed as ACPI: RISC-V: Fix FFH_CPPC_CSR error handling (5b3706597b90a7b6c9ae148edd07a43531dcd49e). No new features introduced in this iteration; primary focus was reliability and correctness under RISC-V ACPI.
August 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07: Focus on performance optimization and kernel configurability in geerlingguy/linux. Delivered a new kernel parameter irqchip.riscv_imsic_noipi to opt-out of IMSIC IPIs, reducing MMIO trap overhead on RISCV IMSIC configurations and improving overall trap latency under high load. This work enhances hardware compatibility and performance predictability for edge and cloud environments.
July 2025
1 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07: Focus on performance optimization and kernel configurability in geerlingguy/linux. Delivered a new kernel parameter irqchip.riscv_imsic_noipi to opt-out of IMSIC IPIs, reducing MMIO trap overhead on RISCV IMSIC configurations and improving overall trap latency under high load. This work enhances hardware compatibility and performance predictability for edge and cloud environments.
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
ACPIDevice DriversEmbedded SystemsKernel DevelopmentRISC-V Architecture
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