diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2022-12-02 11:31:43 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-12-02 13:59:57 +0300 |
| commit | 6f3a81b60091031c2c14eb2373d1937b027deb46 (patch) | |
| tree | 6185cf59f2c988b5d5f7f5ae943f7968dd88708f /arch/powerpc/include/asm/code-patching.h | |
| parent | b988e7797d09379057cf991ae082f9ad7a309a63 (diff) | |
| download | linux-6f3a81b60091031c2c14eb2373d1937b027deb46.tar.xz | |
powerpc/code-patching: Remove protection against patching init addresses after init
Once init section is freed, attempting to patch init code
ends up in the weed.
Commit 51c3c62b58b3 ("powerpc: Avoid code patching freed init sections")
protected patch_instruction() against that, but it is the responsibility
of the caller to ensure that the patched memory is valid.
All callers have now been verified and fixed so the check
can be removed.
This improves ftrace activation by about 2% on 8xx.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/504310828f473d424e2ed229eff57bf075f52796.1669969781.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/code-patching.h')
| -rw-r--r-- | arch/powerpc/include/asm/code-patching.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/code-patching.h b/arch/powerpc/include/asm/code-patching.h index 1c6316ec4b74..3f881548fb61 100644 --- a/arch/powerpc/include/asm/code-patching.h +++ b/arch/powerpc/include/asm/code-patching.h @@ -22,8 +22,6 @@ #define BRANCH_SET_LINK 0x1 #define BRANCH_ABSOLUTE 0x2 -DECLARE_STATIC_KEY_FALSE(init_mem_is_free); - /* * Powerpc branch instruction is : * |