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| author | Uwe Kleine-König <ukleinek@debian.org> | 2024-09-19 11:11:21 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-10-01 21:43:39 +0300 |
| commit | 8b4865cd904650cbed7f2407e653934c621b8127 (patch) | |
| tree | 5eee54153895ab305266efda15dab7300e4bbb34 /drivers/cdx/controller/cdx_controller.c | |
| parent | 9852d85ec9d492ebef56dc5f229416c925758edc (diff) | |
| download | linux-8b4865cd904650cbed7f2407e653934c621b8127.tar.xz | |
cpufreq: intel_pstate: Make hwp_notify_lock a raw spinlock
notify_hwp_interrupt() is called via sysvec_thermal() ->
smp_thermal_vector() -> intel_thermal_interrupt() in hard irq context.
For this reason it must not use a simple spin_lock that sleeps with
PREEMPT_RT enabled. So convert it to a raw spinlock.
Reported-by: xiao sheng wen <atzlinux@sina.com>
Link: https://bugs.debian.org/1076483
Signed-off-by: Uwe Kleine-König <ukleinek@debian.org>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: xiao sheng wen <atzlinux@sina.com>
Link: https://patch.msgid.link/20240919081121.10784-2-ukleinek@debian.org
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cdx/controller/cdx_controller.c')
0 files changed, 0 insertions, 0 deletions