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octeontx2-pf: Avoid use of GFP_KERNEL in atomic context

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commit 87b93b678e upstream.

Using GFP_KERNEL in preemption disable context, causing below warning
when CONFIG_DEBUG_ATOMIC_SLEEP is enabled.

[   32.542271] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274
[   32.550883] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper/0
[   32.558707] preempt_count: 1, expected: 0
[   32.562710] RCU nest depth: 0, expected: 0
[   32.566800] CPU: 3 PID: 1 Comm: swapper/0 Tainted: G        W          6.2.0-rc2-00269-gae9dcb91c606 #7
[   32.576188] Hardware name: Marvell CN106XX board (DT)
[   32.581232] Call trace:
[   32.583670]  dump_backtrace.part.0+0xe0/0xf0
[   32.587937]  show_stack+0x18/0x30
[   32.591245]  dump_stack_lvl+0x68/0x84
[   32.594900]  dump_stack+0x18/0x34
[   32.598206]  __might_resched+0x12c/0x160
[   32.602122]  __might_sleep+0x48/0xa0
[   32.605689]  __kmem_cache_alloc_node+0x2b8/0x2e0
[   32.610301]  __kmalloc+0x58/0x190
[   32.613610]  otx2_sq_aura_pool_init+0x1a8/0x314
[   32.618134]  otx2_open+0x1d4/0x9d0

To avoid use of GFP_ATOMIC for memory allocation, disable preemption
after all memory allocation is done.

Fixes: 4af1b64f80 ("octeontx2-pf: Fix lmtst ID used in aura free")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geetha sowjanya
2023-01-13 11:49:02 +05:30
committed by Greg Kroah-Hartman
parent 6da17ac15e
commit 1eb57b87f1
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
View File

@@ -1370,7 +1370,6 @@ int otx2_sq_aura_pool_init(struct otx2_nic *pfvf)
if (err)
goto fail;
get_cpu();
/* Allocate pointers and free them to aura/pool */
for (qidx = 0; qidx < hw->tot_tx_queues; qidx++) {
pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx);
@@ -1388,13 +1387,14 @@ int otx2_sq_aura_pool_init(struct otx2_nic *pfvf)
err = otx2_alloc_rbuf(pfvf, pool, &bufptr);
if (err)
goto err_mem;
get_cpu();
pfvf->hw_ops->aura_freeptr(pfvf, pool_id, bufptr);
put_cpu();
sq->sqb_ptrs[sq->sqb_count++] = (u64)bufptr;
}
}
err_mem:
put_cpu();
return err ? -ENOMEM : 0;
fail: