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| author | Shay Drory <shayd@nvidia.com> | 2024-08-06 10:20:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-08-14 16:34:32 +0300 |
| commit | b4542a5de28c6751e7ef2a3823fa56909b427b5f (patch) | |
| tree | 3ec515ff7030685512e0ab083472a176d8de897d /arch | |
| parent | 55e54e950813661e4e21a23d06cdb6a1f127c814 (diff) | |
| download | linux-b4542a5de28c6751e7ef2a3823fa56909b427b5f.tar.xz | |
genirq/irqdesc: Honor caller provided affinity in alloc_desc()
commit edbbaae42a56f9a2b39c52ef2504dfb3fb0a7858 upstream.
Currently, whenever a caller is providing an affinity hint for an
interrupt, the allocation code uses it to calculate the node and copies the
cpumask into irq_desc::affinity.
If the affinity for the interrupt is not marked 'managed' then the startup
of the interrupt ignores irq_desc::affinity and uses the system default
affinity mask.
Prevent this by setting the IRQD_AFFINITY_SET flag for the interrupt in the
allocator, which causes irq_setup_affinity() to use irq_desc::affinity on
interrupt startup if the mask contains an online CPU.
[ tglx: Massaged changelog ]
Fixes: 45ddcecbfa94 ("genirq: Use affinity hint in irqdesc allocation")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/all/20240806072044.837827-1-shayd@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions