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| author | Douglas Anderson <dianders@chromium.org> | 2023-08-04 07:00:43 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-18 10:19:00 -0700 |
| commit | 1f38c86bb29f4548b8df01b47a313518e6ed2dfe (patch) | |
| tree | 204a1574c10f5cb6ac23c6ae8a984421b3094050 /scripts/gdb/linux/utils.py | |
| parent | 8d539b84f1e3478436f978ceaf55a0b6cab497b5 (diff) | |
| download | linux-1f38c86bb29f4548b8df01b47a313518e6ed2dfe.tar.gz linux-1f38c86bb29f4548b8df01b47a313518e6ed2dfe.tar.bz2 linux-1f38c86bb29f4548b8df01b47a313518e6ed2dfe.zip | |
watchdog/hardlockup: avoid large stack frames in watchdog_hardlockup_check()
After commit 77c12fc95980 ("watchdog/hardlockup: add a "cpu" param to
watchdog_hardlockup_check()") we started storing a `struct cpumask` on the
stack in watchdog_hardlockup_check(). On systems with CONFIG_NR_CPUS set
to 8192 this takes up 1K on the stack. That triggers warnings with
`CONFIG_FRAME_WARN` set to 1024.
We'll use the new trigger_allbutcpu_cpu_backtrace() to avoid needing to
use a CPU mask at all.
Link: https://lkml.kernel.org/r/20230804065935.v4.2.I501ab68cb926ee33a7c87e063d207abf09b9943c@changeid
Fixes: 77c12fc95980 ("watchdog/hardlockup: add a "cpu" param to watchdog_hardlockup_check()")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/r/202307310955.pLZDhpnl-lkp@intel.com
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Lecopzer Chen <lecopzer.chen@mediatek.com>
Cc: Pingfan Liu <kernelfans@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions