diff options
| author | Alex Sverdlin <alexander.sverdlin@nokia.com> | 2021-09-22 10:00:32 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-26 14:07:06 +0200 |
| commit | 1b27a03d1292875989c5bbdd86932d1e128fe743 (patch) | |
| tree | 7ff37a1479db2e8cb2241e76556fc9edc1075548 /arch/arm/kernel | |
| parent | 490be340c86cb8d52401477381d2e36946ad675f (diff) | |
ARM: 9078/1: Add warn suppress parameter to arm_gen_branch_link()
commit 890cb057a46d323fd8c77ebecb6485476614cd21 upstream
Will be used in the following patch. No functional change.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/ftrace.c | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/insn.c | 19 |
2 files changed, 11 insertions, 10 deletions
diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c index bda949fd84e8..f2073cee4102 100644 --- a/arch/arm/kernel/ftrace.c +++ b/arch/arm/kernel/ftrace.c @@ -73,7 +73,7 @@ int ftrace_arch_code_modify_post_process(void) static unsigned long ftrace_call_replace(unsigned long pc, unsigned long addr) { - return arm_gen_branch_link(pc, addr); + return arm_gen_branch_link(pc, addr, true); } static int ftrace_modify_code(unsigned long pc, unsigned long old, diff --git a/arch/arm/kernel/insn.c b/arch/arm/kernel/insn.c index 2e844b70386b..db0acbb7d7a0 100644 --- a/arch/arm/kernel/insn.c +++ b/arch/arm/kernel/insn.c @@ -3,8 +3,9 @@ #include <linux/kernel.h> #include <asm/opcodes.h> -static unsigned long -__arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link) +static unsigned long __arm_gen_branch_thumb2(unsigned long pc, + unsigned long addr, bool link, + bool warn) { unsigned long s, j1, j2, i1, i2, imm10, imm11; unsigned long first, second; @@ -12,7 +13,7 @@ __arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link) offset = (long)addr - (long)(pc + 4); if (offset < -16777216 || offset > 16777214) { - WARN_ON_ONCE(1); + WARN_ON_ONCE(warn); return 0; } @@ -33,8 +34,8 @@ __arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link) return __opcode_thumb32_compose(first, second); } -static unsigned long -__arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link) +static unsigned long __arm_gen_branch_arm(unsigned long pc, unsigned long addr, + bool link, bool warn) { unsigned long opcode = 0xea000000; long offset; @@ -44,7 +45,7 @@ __arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link) offset = (long)addr - (long)(pc + 8); if (unlikely(offset < -33554432 || offset > 33554428)) { - WARN_ON_ONCE(1); + WARN_ON_ONCE(warn); return 0; } @@ -54,10 +55,10 @@ __arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link) } unsigned long -__arm_gen_branch(unsigned long pc, unsigned long addr, bool link) +__arm_gen_branch(unsigned long pc, unsigned long addr, bool link, bool warn) { if (IS_ENABLED(CONFIG_THUMB2_KERNEL)) - return __arm_gen_branch_thumb2(pc, addr, link); + return __arm_gen_branch_thumb2(pc, addr, link, warn); else - return __arm_gen_branch_arm(pc, addr, link); + return __arm_gen_branch_arm(pc, addr, link, warn); } |