lkml.org 
[lkml]   [2022]   [Jun]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Subject[PATCH v4 0/4] PM / devfreq: Various Fixes to cpufreq based passive governor
    Date
    While developing a krait cache scaling devfreq driver I encounter tons
    of panics and errors with using the new cpufreq passive governor
    functions. While the krait cache scaling is still WIP and required some
    testing I would like to push all the fixes to make the new
    implementation wroking since currently with a the governor
    PROBE_DEFERRing all sort of things happen from kernel panic from invalid
    address access to freq_table getting corrupted.

    With the following fixes my WIP driver works correctly without any
    warning/problems.

    v4:
    - Fix error with dev_err_probe
    - Move cpu_parent_data deletion to dedicated function
    - Drop PM / devfreq: Fix kernel panic with cpu based scaling
    to passive gov (merged)
    v3:
    - Fix compilation error for list_for_each_entry_safe (i'm stupid -.-''')
    v2:
    - Fix wrong list_for_each_entry reported by Dan Carpenter

    Christian 'Ansuel' Marangi (4):
    PM / devfreq: Fix cpufreq passive unregister erroring on PROBE_DEFER
    PM / devfreq: Fix kernel warning with cpufreq passive register fail
    PM / devfreq: Rework freq_table to be local to devfreq struct
    PM / devfreq: Mute warning on governor PROBE_DEFER

    drivers/devfreq/devfreq.c | 76 +++++++++++++++---------------
    drivers/devfreq/governor_passive.c | 54 ++++++++++-----------
    include/linux/devfreq.h | 4 ++
    3 files changed, 65 insertions(+), 69 deletions(-)

    --
    2.36.1

    \
     
     \ /
      Last update: 2022-06-15 02:05    [W:2.731 / U:0.712 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site