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| author | Dapeng Mi <dapeng1.mi@linux.intel.com> | 2026-09-17 09:52:33 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2026-09-22 11:37:46 +0200 |
| commit | 0102c8c7fdfc4bd700971daff2b94470f4eafae4 (patch) | |
| tree | 531306c2299f9a269f0a986e29f17ba972180104 /arch/arm64/lib/strrchr.S | |
| download | linux-stable-0102c8c7fdfc4bd700971daff2b94470f4eafae4.tar.gz linux-stable-0102c8c7fdfc4bd700971daff2b94470f4eafae4.zip | |
perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rspgrafted
DMR introduces Offmodule Response events in place of the legacy
Offcore Response events, but it still exposes the inherited
offcore_rsp PMU attribute for programming the corresponding MSR data.
Rename the DMR PMU attribute to offmodule_rsp so the sysfs interface
matches the underlying event name and avoids user & tooling confusion.
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20260917015234.981153-12-dapeng1.mi@linux.intel.com
Diffstat (limited to 'arch/arm64/lib/strrchr.S')
| -rw-r--r-- | arch/arm64/lib/strrchr.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm64/lib/strrchr.S b/arch/arm64/lib/strrchr.S new file mode 100644 index 000000000..a5123cf0c --- /dev/null +++ b/arch/arm64/lib/strrchr.S @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Based on arch/arm/lib/strrchr.S + * + * Copyright (C) 1995-2000 Russell King + * Copyright (C) 2013 ARM Ltd. + */ + +#include <linux/linkage.h> +#include <asm/assembler.h> + +/* + * Find the last occurrence of a character in a string. + * + * Parameters: + * x0 - str + * x1 - c + * Returns: + * x0 - address of last occurrence of 'c' or 0 + */ +SYM_FUNC_START(__pi_strrchr) + mov x3, #0 + and w1, w1, #0xff +1: ldrb w2, [x0], #1 + cbz w2, 2f + cmp w2, w1 + b.ne 1b + sub x3, x0, #1 + b 1b +2: mov x0, x3 + ret +SYM_FUNC_END(__pi_strrchr) +SYM_FUNC_ALIAS_WEAK(strrchr, __pi_strrchr) +EXPORT_SYMBOL_NOKASAN(strrchr) |