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Date:   Thu, 14 Mar 2019 20:45:02 -0700
From:   Sultan Alsawaf <>
To:     Steven Rostedt <>
Cc:     Joel Fernandes <>,
        Tim Murray <>,
        Michal Hocko <>,
        Suren Baghdasaryan <>,
        Greg Kroah-Hartman <>,
        Arve Hjønnevåg <>,
        Todd Kjos <>,
        Martijn Coenen <>,
        Christian Brauner <>,
        Ingo Molnar <>,
        Peter Zijlstra <>,
        LKML <>,
        "open list:ANDROID DRIVERS" <>,
        linux-mm <>,
        kernel-team <>
Subject: Re: [RFC] simple_lmk: Introduce Simple Low Memory Killer for Android

On Thu, Mar 14, 2019 at 11:16:41PM -0400, Steven Rostedt wrote:
> How would you implement such a method in userspace? kill() doesn't take
> any parameters but the pid of the process you want to send a signal to,
> and the signal to send. This would require a new system call, and be
> quite a bit of work. If you can solve this with an ebpf program, I
> strongly suggest you do that instead.

This can be done by introducing a new signal number that provides SIGKILL
functionality while blocking (maybe SIGKILLBLOCK?).


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