selftests/ftrace: Fix unique symbol check in kprobe_non_uniq_symbol.tcgrafted

The current regex also matches symbols in modules, which makes the
test fail on s390 where name_show is present only once in the kernel,
but also multiple times in modules:

000001b1401cdc20 t name_show
000001b0c05e6c40 t name_show    [mdev]
000001b0c0495f30 t name_show    [i2c_core]

Fix this by changing the regular expression to only match the function
name.

Link: https://lore.kernel.org/all/20260909092954.2200558-1-svens@linux.ibm.com/

Fixes: 03b80ff8023a ("selftests/ftrace: Add new test case which checks non unique symbol")
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>

1 files changed, 237 insertions, 0 deletions

diff --git a/arch/powerpc/lib/ldstfp.S b/arch/powerpc/lib/ldstfp.S
new file mode 100644
index 000000000..e00abeabc
--- /dev/null
+++ b/arch/powerpc/lib/ldstfp.S
@@ -0,0 +1,237 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Floating-point, VMX/Altivec and VSX loads and stores
+ * for use in instruction emulation.
+ *
+ * Copyright 2010 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com>
+ */
+
+#include <asm/processor.h>
+#include <asm/ppc_asm.h>
+#include <asm/ppc-opcode.h>
+#include <asm/reg.h>
+#include <asm/asm-offsets.h>
+#include <asm/asm-compat.h>
+#include <linux/errno.h>
+
+#define STKFRM	(PPC_MIN_STKFRM + 16)
+
+/* Get the contents of frN into *p; N is in r3 and p is in r4. */
+_GLOBAL(get_fpr)
+	mflr	r0
+	mfmsr	r6
+	ori	r7, r6, MSR_FP
+	MTMSRD(r7)
+	isync
+	rlwinm	r3,r3,3,0xf8
+	bcl	20,31,1f
+reg = 0
+	.rept	32
+	stfd	reg, 0(r4)
+	b	2f
+reg = reg + 1
+	.endr
+1:	mflr	r5
+	add	r5,r3,r5
+	mtctr	r5
+	mtlr	r0
+	bctr
+2:	MTMSRD(r6)
+	isync
+	blr
+
+/* Put the contents of *p into frN; N is in r3 and p is in r4. */
+_GLOBAL(put_fpr)
+	mflr	r0
+	mfmsr	r6
+	ori	r7, r6, MSR_FP
+	MTMSRD(r7)
+	isync
+	rlwinm	r3,r3,3,0xf8
+	bcl	20,31,1f
+reg = 0
+	.rept	32
+	lfd	reg, 0(r4)
+	b	2f
+reg = reg + 1
+	.endr
+1:	mflr	r5
+	add	r5,r3,r5
+	mtctr	r5
+	mtlr	r0
+	bctr
+2:	MTMSRD(r6)
+	isync
+	blr
+
+#ifdef CONFIG_ALTIVEC
+/* Get the contents of vrN into *p; N is in r3 and p is in r4. */
+_GLOBAL(get_vr)
+	mflr	r0
+	mfmsr	r6
+	oris	r7, r6, MSR_VEC@h
+	MTMSRD(r7)
+	isync
+	rlwinm	r3,r3,3,0xf8
+	bcl	20,31,1f
+reg = 0
+	.rept	32
+	stvx	reg, 0, r4
+	b	2f
+reg = reg + 1
+	.endr
+1:	mflr	r5
+	add	r5,r3,r5
+	mtctr	r5
+	mtlr	r0
+	bctr
+2:	MTMSRD(r6)
+	isync
+	blr
+
+/* Put the contents of *p into vrN; N is in r3 and p is in r4. */
+_GLOBAL(put_vr)
+	mflr	r0
+	mfmsr	r6
+	oris	r7, r6, MSR_VEC@h
+	MTMSRD(r7)
+	isync
+	rlwinm	r3,r3,3,0xf8
+	bcl	20,31,1f
+reg = 0
+	.rept	32
+	lvx	reg, 0, r4
+	b	2f
+reg = reg + 1
+	.endr
+1:	mflr	r5
+	add	r5,r3,r5
+	mtctr	r5
+	mtlr	r0
+	bctr
+2:	MTMSRD(r6)
+	isync
+	blr
+#endif /* CONFIG_ALTIVEC */
+
+#ifdef CONFIG_VSX
+/* Get the contents of vsN into vs0; N is in r3. */
+_GLOBAL(get_vsr)
+	mflr	r0
+	rlwinm	r3,r3,3,0x1f8
+	bcl	20,31,1f
+	blr			/* vs0 is already in vs0 */
+	nop
+reg = 1
+	.rept	63
+	XXLOR(0,reg,reg)
+	blr
+reg = reg + 1
+	.endr
+1:	mflr	r5
+	add	r5,r3,r5
+	mtctr	r5
+	mtlr	r0
+	bctr
+
+/* Put the contents of vs0 into vsN; N is in r3. */
+_GLOBAL(put_vsr)
+	mflr	r0
+	rlwinm	r3,r3,3,0x1f8
+	bcl	20,31,1f
+	blr			/* v0 is already in v0 */
+	nop
+reg = 1
+	.rept	63
+	XXLOR(reg,0,0)
+	blr
+reg = reg + 1
+	.endr
+1:	mflr	r5
+	add	r5,r3,r5
+	mtctr	r5
+	mtlr	r0
+	bctr
+
+/* Load VSX reg N from vector doubleword *p.  N is in r3, p in r4. */
+_GLOBAL(load_vsrn)
+	PPC_STLU r1,-STKFRM(r1)
+	mflr	r0
+	PPC_STL	r0,STKFRM+PPC_LR_STKOFF(r1)
+	mfmsr	r6
+	oris	r7,r6,MSR_VSX@h
+	cmpwi	cr7,r3,0
+	li	r8,STKFRM-16
+	MTMSRD(r7)
+	isync
+	beq	cr7,1f
+	STXVD2X(0,R1,R8)
+1:	LXVD2X(0,R0,R4)
+#ifdef __LITTLE_ENDIAN__
+	XXSWAPD(0,0)
+#endif
+	beq	cr7,4f
+	bl	put_vsr
+	LXVD2X(0,R1,R8)
+4:	PPC_LL	r0,STKFRM+PPC_LR_STKOFF(r1)
+	mtlr	r0
+	MTMSRD(r6)
+	isync
+	addi	r1,r1,STKFRM
+	blr
+
+/* Store VSX reg N to vector doubleword *p.  N is in r3, p in r4. */
+_GLOBAL(store_vsrn)
+	PPC_STLU r1,-STKFRM(r1)
+	mflr	r0
+	PPC_STL	r0,STKFRM+PPC_LR_STKOFF(r1)
+	mfmsr	r6
+	oris	r7,r6,MSR_VSX@h
+	li	r8,STKFRM-16
+	MTMSRD(r7)
+	isync
+	STXVD2X(0,R1,R8)
+	bl	get_vsr
+#ifdef __LITTLE_ENDIAN__
+	XXSWAPD(0,0)
+#endif
+	STXVD2X(0,R0,R4)
+	LXVD2X(0,R1,R8)
+	PPC_LL	r0,STKFRM+PPC_LR_STKOFF(r1)
+	mtlr	r0
+	MTMSRD(r6)
+	isync
+	mr	r3,r9
+	addi	r1,r1,STKFRM
+	blr
+#endif /* CONFIG_VSX */
+
+/* Convert single-precision to double, without disturbing FPRs. */
+/* conv_sp_to_dp(float *sp, double *dp) */
+_GLOBAL(conv_sp_to_dp)
+	mfmsr	r6
+	ori	r7, r6, MSR_FP
+	MTMSRD(r7)
+	isync
+	stfd	fr0, -16(r1)
+	lfs	fr0, 0(r3)
+	stfd	fr0, 0(r4)
+	lfd	fr0, -16(r1)
+	MTMSRD(r6)
+	isync
+	blr
+
+/* Convert single-precision to double, without disturbing FPRs. */
+/* conv_sp_to_dp(double *dp, float *sp) */
+_GLOBAL(conv_dp_to_sp)
+	mfmsr	r6
+	ori	r7, r6, MSR_FP
+	MTMSRD(r7)
+	isync
+	stfd	fr0, -16(r1)
+	lfd	fr0, 0(r3)
+	stfs	fr0, 0(r4)
+	lfd	fr0, -16(r1)
+	MTMSRD(r6)
+	isync
+	blr