powerpc: Rename probe_kernel_read_inst()

When probe_kernel_read_inst() was created, it was to mimic
probe_kernel_read() function.

Since then, probe_kernel_read() has been renamed
copy_from_kernel_nofault().

Rename probe_kernel_read_inst() into copy_inst_from_kernel_nofault().

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b783d1f7cdb8914992384a669a2af57051b6bdcf.1618405715.git.christophe.leroy@csgroup.eu

diff --git a/arch/powerpc/include/asm/inst.h b/arch/powerpc/include/asm/inst.h
index 539117b..268d3bd 100644 (file)
--- a/arch/powerpc/include/asm/inst.h
+++ b/arch/powerpc/include/asm/inst.h
@@ -178,7 +178,6 @@ static inline char *__ppc_inst_as_str(char str[PPC_INST_STR_LEN], struct ppc_ins
        __str;                          \
 })
 
-int probe_kernel_read_inst(struct ppc_inst *inst,
-                          struct ppc_inst *src);
+int copy_inst_from_kernel_nofault(struct ppc_inst *inst, struct ppc_inst *src);
 
 #endif /* _ASM_POWERPC_INST_H */

diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 938db36..bbb4181 100644 (file)
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -305,7 +305,7 @@ int fix_alignment(struct pt_regs *regs)
        int r, type;
 
        if (is_kernel_addr(regs->nip))
-               r = probe_kernel_read_inst(&instr, (void *)regs->nip);
+               r = copy_inst_from_kernel_nofault(&instr, (void *)regs->nip);
        else
                r = __get_user_instr(instr, (void __user *)regs->nip);
 

diff --git a/arch/powerpc/kernel/trace/ftrace.c b/arch/powerpc/kernel/trace/ftrace.c
index 42761eb..ffe9537 100644 (file)
--- a/arch/powerpc/kernel/trace/ftrace.c
+++ b/arch/powerpc/kernel/trace/ftrace.c
@@ -68,7 +68,7 @@ ftrace_modify_code(unsigned long ip, struct ppc_inst old, struct ppc_inst new)
         */
 
        /* read the text we want to modify */
-       if (probe_kernel_read_inst(&replaced, (void *)ip))
+       if (copy_inst_from_kernel_nofault(&replaced, (void *)ip))
                return -EFAULT;
 
        /* Make sure it is what we expect it to be */
@@ -130,7 +130,7 @@ __ftrace_make_nop(struct module *mod,
        struct ppc_inst op, pop;
 
        /* read where this goes */
-       if (probe_kernel_read_inst(&op, (void *)ip)) {
+       if (copy_inst_from_kernel_nofault(&op, (void *)ip)) {
                pr_err("Fetching opcode failed.\n");
                return -EFAULT;
        }
@@ -164,7 +164,7 @@ __ftrace_make_nop(struct module *mod,
        /* When using -mkernel_profile there is no load to jump over */
        pop = ppc_inst(PPC_INST_NOP);
 
-       if (probe_kernel_read_inst(&op, (void *)(ip - 4))) {
+       if (copy_inst_from_kernel_nofault(&op, (void *)(ip - 4))) {
                pr_err("Fetching instruction at %lx failed.\n", ip - 4);
                return -EFAULT;
        }
@@ -197,7 +197,7 @@ __ftrace_make_nop(struct module *mod,
         * Check what is in the next instruction. We can see ld r2,40(r1), but
         * on first pass after boot we will see mflr r0.
         */
-       if (probe_kernel_read_inst(&op, (void *)(ip + 4))) {
+       if (copy_inst_from_kernel_nofault(&op, (void *)(ip + 4))) {
                pr_err("Fetching op failed.\n");
                return -EFAULT;
        }
@@ -349,7 +349,7 @@ static int setup_mcount_compiler_tramp(unsigned long tramp)
                        return -1;
 
        /* New trampoline -- read where this goes */
-       if (probe_kernel_read_inst(&op, (void *)tramp)) {
+       if (copy_inst_from_kernel_nofault(&op, (void *)tramp)) {
                pr_debug("Fetching opcode failed.\n");
                return -1;
        }
@@ -399,7 +399,7 @@ static int __ftrace_make_nop_kernel(struct dyn_ftrace *rec, unsigned long addr)
        struct ppc_inst op;
 
        /* Read where this goes */
-       if (probe_kernel_read_inst(&op, (void *)ip)) {
+       if (copy_inst_from_kernel_nofault(&op, (void *)ip)) {
                pr_err("Fetching opcode failed.\n");
                return -EFAULT;
        }
@@ -526,10 +526,10 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
        struct module *mod = rec->arch.mod;
 
        /* read where this goes */
-       if (probe_kernel_read_inst(op, ip))
+       if (copy_inst_from_kernel_nofault(op, ip))
                return -EFAULT;
 
-       if (probe_kernel_read_inst(op + 1, ip + 4))
+       if (copy_inst_from_kernel_nofault(op + 1, ip + 4))
                return -EFAULT;
 
        if (!expected_nop_sequence(ip, op[0], op[1])) {
@@ -592,7 +592,7 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
        unsigned long ip = rec->ip;
 
        /* read where this goes */
-       if (probe_kernel_read_inst(&op, (void *)ip))
+       if (copy_inst_from_kernel_nofault(&op, (void *)ip))
                return -EFAULT;
 
        /* It should be pointing to a nop */
@@ -648,7 +648,7 @@ static int __ftrace_make_call_kernel(struct dyn_ftrace *rec, unsigned long addr)
        }
 
        /* Make sure we have a nop */
-       if (probe_kernel_read_inst(&op, ip)) {
+       if (copy_inst_from_kernel_nofault(&op, ip)) {
                pr_err("Unable to read ftrace location %p\n", ip);
                return -EFAULT;
        }
@@ -726,7 +726,7 @@ __ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
        }
 
        /* read where this goes */
-       if (probe_kernel_read_inst(&op, (void *)ip)) {
+       if (copy_inst_from_kernel_nofault(&op, (void *)ip)) {
                pr_err("Fetching opcode failed.\n");
                return -EFAULT;
        }

diff --git a/arch/powerpc/lib/inst.c b/arch/powerpc/lib/inst.c
index 0dff3ac..e554d13 100644 (file)
--- a/arch/powerpc/lib/inst.c
+++ b/arch/powerpc/lib/inst.c
@@ -8,8 +8,7 @@
 #include <asm/inst.h>
 #include <asm/ppc-opcode.h>
 
-int probe_kernel_read_inst(struct ppc_inst *inst,
-                          struct ppc_inst *src)
+int copy_inst_from_kernel_nofault(struct ppc_inst *inst, struct ppc_inst *src)
 {
        unsigned int val, suffix;
        int err;