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| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2022-08-16 15:53:48 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-08-18 06:58:31 +0200 |
| commit | 22d842e3efe56402c33b5e6e303bb71ce9bf9334 (patch) | |
| tree | 995119d278a788424f32aee0c854562f70f221b4 /include | |
| parent | net: mscc: ocelot: fix address of SYS_COUNT_TX_AGING counter (diff) | |
| download | linux-22d842e3efe56402c33b5e6e303bb71ce9bf9334.tar.xz linux-22d842e3efe56402c33b5e6e303bb71ce9bf9334.zip | |
net: mscc: ocelot: turn stats_lock into a spinlock
ocelot_get_stats64() currently runs unlocked and therefore may collide
with ocelot_port_update_stats() which indirectly accesses the same
counters. However, ocelot_get_stats64() runs in atomic context, and we
cannot simply take the sleepable ocelot->stats_lock mutex. We need to
convert it to an atomic spinlock first. Do that as a preparatory change.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/soc/mscc/ocelot.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h index e7e5b06deb2d..72b9474391da 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -752,7 +752,7 @@ struct ocelot { struct ocelot_psfp_list psfp; /* Workqueue to check statistics for overflow with its lock */ - struct mutex stats_lock; + spinlock_t stats_lock; u64 *stats; struct delayed_work stats_work; struct workqueue_struct *stats_queue; |