From edecd2d6d6f4a122dd62bce654b4f63301e8ad9a Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Thu, 2 Dec 2021 13:00:17 +0100 Subject: powerpc/code-patching: Remove pr_debug()/pr_devel() messages and fix check() code-patching has been working for years now, time has come to remove debugging messages. Change useful message to KERN_INFO and remove other ones. Also add KERN_ERR to check() macro and change it into a do/while to make checkpatch happy. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/3ff9823c0a812a8a145d979a9600a6d4591b80ee.1638446239.git.christophe.leroy@csgroup.eu --- arch/powerpc/lib/code-patching.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) (limited to 'arch/powerpc/lib') diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index ee54cb447f80..7334ea99efd0 100644 --- a/arch/powerpc/lib/code-patching.c +++ b/arch/powerpc/lib/code-patching.c @@ -95,7 +95,6 @@ static int map_patch_area(void *addr, unsigned long text_poke_addr) err = map_kernel_page(text_poke_addr, (pfn << PAGE_SHIFT), PAGE_KERNEL); - pr_devel("Mapped addr %lx with pfn %lx:%d\n", text_poke_addr, pfn, err); if (err) return -1; @@ -130,8 +129,6 @@ static inline int unmap_patch_area(unsigned long addr) if (unlikely(!ptep)) return -EINVAL; - pr_devel("clearing mm %p, pte %p, addr %lx\n", &init_mm, ptep, addr); - /* * In hash, pte_clear flushes the tlb, in radix, we have to */ @@ -190,10 +187,9 @@ static int do_patch_instruction(u32 *addr, ppc_inst_t instr) int patch_instruction(u32 *addr, ppc_inst_t instr) { /* Make sure we aren't patching a freed init section */ - if (init_mem_is_free && init_section_contains(addr, 4)) { - pr_debug("Skipping init section patching addr: 0x%px\n", addr); + if (init_mem_is_free && init_section_contains(addr, 4)) return 0; - } + return do_patch_instruction(addr, instr); } NOKPROBE_SYMBOL(patch_instruction); @@ -411,8 +407,10 @@ static void __init test_trampoline(void) asm ("nop;\n"); } -#define check(x) \ - if (!(x)) printk("code-patching: test failed at line %d\n", __LINE__); +#define check(x) do { \ + if (!(x)) \ + pr_err("code-patching: test failed at line %d\n", __LINE__); \ +} while (0) static void __init test_branch_iform(void) { @@ -737,7 +735,7 @@ static inline void test_prefixed_patching(void) {} static int __init test_code_patching(void) { - printk(KERN_DEBUG "Running code patching self-tests ...\n"); + pr_info("Running code patching self-tests ...\n"); test_branch_iform(); test_branch_bform(); -- cgit v1.2.3