[PATCH v4 14/39] perf/x86: Rename get_segment_base() and make it global
From: Josh Poimboeuf <jpoimboe@kernel.org>
Date: 2025-01-22 02:32:06
Also in:
linux-perf-users, linux-toolchains, lkml
Subsystem:
performance events subsystem, the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds, Thomas Gleixner, Borislav Petkov, Dave Hansen
get_segment_base() will be used by the unwind_user code, so make it global and rename it so it doesn't conflict with a KVM function of the same name. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> --- arch/x86/events/core.c | 10 +++++----- arch/x86/include/asm/perf_event.h | 2 ++ 2 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index c75c482d4c52..23ac6343cf86 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c@@ -2790,7 +2790,7 @@ valid_user_frame(const void __user *fp, unsigned long size) return __access_ok(fp, size); } -static unsigned long get_segment_base(unsigned int segment) +unsigned long segment_base_address(unsigned int segment) { struct desc_struct *desc; unsigned int idx = segment >> 3;
@@ -2874,8 +2874,8 @@ perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry_ctx *ent if (user_64bit_mode(regs)) return 0; - cs_base = get_segment_base(regs->cs); - ss_base = get_segment_base(regs->ss); + cs_base = segment_base_address(regs->cs); + ss_base = segment_base_address(regs->ss); fp = compat_ptr(ss_base + regs->bp); pagefault_disable();
@@ -2994,11 +2994,11 @@ static unsigned long code_segment_base(struct pt_regs *regs) return 0x10 * regs->cs; if (user_mode(regs) && regs->cs != __USER_CS) - return get_segment_base(regs->cs); + return segment_base_address(regs->cs); #else if (user_mode(regs) && !user_64bit_mode(regs) && regs->cs != __USER32_CS) - return get_segment_base(regs->cs); + return segment_base_address(regs->cs); #endif return 0; }
diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h
index d95f902acc52..75956c68356f 100644
--- a/arch/x86/include/asm/perf_event.h
+++ b/arch/x86/include/asm/perf_event.h@@ -639,4 +639,6 @@ static __always_inline void perf_lopwr_cb(bool lopwr_in) #define arch_perf_out_copy_user copy_from_user_nmi +unsigned long segment_base_address(unsigned int segment); + #endif /* _ASM_X86_PERF_EVENT_H */
--
2.48.1