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| author | Eric Dumazet <edumazet@google.com> | 2024-02-14 08:48:29 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-17 16:20:41 +0100 |
| commit | 5c0941c55e5f681ffb05f395222ac673460bb3d0 (patch) | |
| tree | 7ceaf5096a64d55274509ddaa68ca00c1a88466a /tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c | |
| parent | 2444a80c1cc2c4240f60f2162abef3797c1803de (diff) | |
| download | linux-5c0941c55e5f681ffb05f395222ac673460bb3d0.tar.gz linux-5c0941c55e5f681ffb05f395222ac673460bb3d0.tar.bz2 linux-5c0941c55e5f681ffb05f395222ac673460bb3d0.zip | |
kobject: reduce uevent_sock_mutex scope
This is a followup of commit a3498436b3a0 ("netns: restrict uevents")
- uevent_sock_mutex no longer protects uevent_seqnum thanks
to prior patch in the series.
- uevent_net_broadcast() can run without holding uevent_sock_mutex.
- Instead of grabbing uevent_sock_mutex before calling
kobject_uevent_net_broadcast(), we can move the
mutex_lock(&uevent_sock_mutex) to the place we iterate over
uevent_sock_list : uevent_net_broadcast_untagged().
After this patch, typical netdevice creations and destructions
calling uevent_net_broadcast_tagged() no longer need to acquire
uevent_sock_mutex.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Christian Brauner <brauner@kernel.org>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Link: https://lore.kernel.org/r/20240214084829.684541-3-edumazet@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c')
0 files changed, 0 insertions, 0 deletions