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rcu/tiny: support vmalloc in tiny-RCU

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Replace kfree() with kvfree() in rcu_reclaim_tiny().
This makes it possible to release either SLAB or vmalloc
objects after a GP.

Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Uladzislau Rezki (Sony)
2020-05-25 23:47:54 +02:00
committed by Paul E. McKenney
parent 5f3c8d6204
commit 64d1d06ccb
1 changed files with 2 additions and 1 deletions
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3
kernel/rcu/tiny.c
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@@ -23,6 +23,7 @@
#include <linux/cpu.h> #include <linux/cpu.h>
#include <linux/prefetch.h> #include <linux/prefetch.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/mm.h>
#include "rcu.h" #include "rcu.h"
@@ -86,7 +87,7 @@ static inline bool rcu_reclaim_tiny(struct rcu_head *head)
rcu_lock_acquire(&rcu_callback_map); rcu_lock_acquire(&rcu_callback_map);
if (__is_kfree_rcu_offset(offset)) { if (__is_kfree_rcu_offset(offset)) {
trace_rcu_invoke_kfree_callback("", head, offset); trace_rcu_invoke_kfree_callback("", head, offset);
kfree((void *)head - offset); kvfree((void *)head - offset);
rcu_lock_release(&rcu_callback_map); rcu_lock_release(&rcu_callback_map);
return true; return true;
} }