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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-05-17 17:24:04 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-05-17 17:24:04 +0100
commitac1d426e825ab5778995f2f6f053ca2e6b45c622 (patch)
tree75b91356ca39463e0112931aa6790802fb1e07a2 /arch/microblaze/kernel/ftrace.c
parentfda0e18c8a7a3e02747c2b045b4fcd2c920410b9 (diff)
parenta3685f00652af83f12b63e3b4ef48f29581ba48b (diff)
Merge branch 'devel-stable' into devel
Conflicts: arch/arm/Kconfig arch/arm/include/asm/system.h arch/arm/mm/Kconfig
Diffstat (limited to 'arch/microblaze/kernel/ftrace.c')
-rw-r--r--arch/microblaze/kernel/ftrace.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/microblaze/kernel/ftrace.c b/arch/microblaze/kernel/ftrace.c
index 388b31ca65a1..515feb404555 100644
--- a/arch/microblaze/kernel/ftrace.c
+++ b/arch/microblaze/kernel/ftrace.c
@@ -151,13 +151,10 @@ int ftrace_make_nop(struct module *mod,
return ret;
}
-static int ret_addr; /* initialized as 0 by default */
-
/* I believe that first is called ftrace_make_nop before this function */
int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
{
int ret;
- ret_addr = addr; /* saving where the barrier jump is */
pr_debug("%s: addr:0x%x, rec->ip: 0x%x, imm:0x%x\n",
__func__, (unsigned int)addr, (unsigned int)rec->ip, imm);
ret = ftrace_modify_code(rec->ip, imm);
@@ -194,12 +191,9 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
ret = ftrace_modify_code(ip, upper);
ret += ftrace_modify_code(ip + 4, lower);
- /* We just need to remove the rtsd r15, 8 by NOP */
- BUG_ON(!ret_addr);
- if (ret_addr)
- ret += ftrace_modify_code(ret_addr, MICROBLAZE_NOP);
- else
- ret = 1; /* fault */
+ /* We just need to replace the rtsd r15, 8 with NOP */
+ ret += ftrace_modify_code((unsigned long)&ftrace_caller,
+ MICROBLAZE_NOP);
/* All changes are done - lets do caches consistent */
flush_icache();