arm64: asm/perf_regs.h: Avoid C++-style comment in UAPI header

An arm64 'allmodconfig' build fails with GCC due to use of a C++-style
comment for the new SVE vector granule 'enum perf_event_arm_regs' entry:

  | /usr/include/asm/perf_regs.h:42:26: error: C++ style comments are not allowed in ISO C90

Use good ol' /* */ comment syntax to keep things rosey.

Link: https://lore.kernel.org/r/632cceb2.170a0220.599ec.0a3a@mx.google.com
Fixes: cbb0c02caf4b ("perf: arm64: Add SVE vector granule register to user regs")
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/arch/arm64/include/uapi/asm/perf_regs.h b/arch/arm64/include/uapi/asm/perf_regs.h
index 0d4b40c..86e5564 100644 (file)
--- a/arch/arm64/include/uapi/asm/perf_regs.h
+++ b/arch/arm64/include/uapi/asm/perf_regs.h
@@ -39,7 +39,7 @@ enum perf_event_arm_regs {
        PERF_REG_ARM64_MAX,
 
        /* Extended/pseudo registers */
-       PERF_REG_ARM64_VG = 46, // SVE Vector Granule
+       PERF_REG_ARM64_VG = 46,                         /* SVE Vector Granule */
        PERF_REG_ARM64_EXTENDED_MAX
 };