Messages in this thread Patch in this message | | | From | Guenter Roeck <> | Subject | [PATCH] mips: Fix build if PERF_EVENTS is configured | Date | Wed, 8 Apr 2015 13:29:52 -0700 |
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mips builds fail in -next as follows if PERF_EVENTS is configured.
kernel/built-in.o: In function `perf_sample_regs_user': kernel/events/core.c:4828: undefined reference to `perf_get_regs_user'
The problem is caused by commit 3478e32c1545 ("MIPS: Add user stack and registers to perf.") in combination with commit 88a7c26af8da ("perf: Move task_pt_regs sampling into arch code"), which introduces perf_get_regs_user().
Cc: Andy Lutomirski <luto@amacapital.net> Cc: David Daney <david.daney@cavium.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> --- Compile tested only.
arch/mips/kernel/perf_regs.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/mips/kernel/perf_regs.c b/arch/mips/kernel/perf_regs.c index 0451c4b..5b04454 100644 --- a/arch/mips/kernel/perf_regs.c +++ b/arch/mips/kernel/perf_regs.c @@ -58,3 +58,11 @@ u64 perf_reg_value(struct pt_regs *regs, int idx) return (s64)v; /* Sign extend if 32-bit. */ } + +void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs, + struct pt_regs *regs_user_copy) +{ + regs_user->regs = task_pt_regs(current); + regs_user->abi = perf_reg_abi(current); +} -- 2.1.0
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