simple_ring_buffer uses local_set() and cmpxchg() on unsigned long. Add
them to undefsyms_base.c to extend the allowlist for the parisc
architecture.
Fixes: 1211907ac0b5 ("tracing: Generate undef symbols allowlist for
simple_ring_buffer")
Reported-by: Guenter Roeck <[email protected]>
Closes:
https://lore.kernel.org/all/[email protected]/
Signed-off-by: Vincent Donnefort <[email protected]>
---
kernel/trace/undefsyms_base.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/undefsyms_base.c b/kernel/trace/undefsyms_base.c
index e65baf58e6ff..37310baf706b 100644
--- a/kernel/trace/undefsyms_base.c
+++ b/kernel/trace/undefsyms_base.c
@@ -9,6 +9,7 @@
#include <linux/atomic.h>
#include <linux/string.h>
+#include <asm/local.h>
#include <asm/page.h>
void undefsyms_base(void *p, int n);
@@ -18,11 +19,13 @@ static char page[PAGE_SIZE] __aligned(PAGE_SIZE);
void undefsyms_base(void *p, int n)
{
char buffer[256] = { 0 };
-
u32 u = 0;
+
memset((char * volatile)page, 8, PAGE_SIZE);
memset((char * volatile)buffer, 8, sizeof(buffer));
memcpy((void * volatile)p, buffer, sizeof(buffer));
cmpxchg((u32 * volatile)&u, 0, 8);
+ cmpxchg((unsigned long *)p, 0, 8);
+ local_set((local_t *)p, 8);
WARN_ON(n == 0xdeadbeef);
}
--
2.55.0.1082.g2b9226bbc0-goog
