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Commit 2d89cd86 authored by David Ahern's avatar David Ahern Committed by David S. Miller
Browse files

sparc64: perf: Use UREG_FP rather than UREG_I6 



perf walks userspace callchains by following frame pointers. Use the
UREG_FP macro to make it clearer that the %fp is being used.

Signed-off-by: default avatarDavid Ahern <david.ahern@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b69fb769

arch/sparc/kernel/perf_event.c

+2 −2
Original line number Diff line number Diff line
@@ -1756,7 +1756,7 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry, 
{

	unsigned long ufp;



	ufp = regs->u_regs[UREG_I6] + STACK_BIAS;

	ufp = regs->u_regs[UREG_FP] + STACK_BIAS;

	do {

		struct sparc_stackf __user *usf;

		struct sparc_stackf sf;
@@ -1780,7 +1780,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry, 
{

	unsigned long ufp;



	ufp = regs->u_regs[UREG_I6] & 0xffffffffUL;

	ufp = regs->u_regs[UREG_FP] & 0xffffffffUL;

	do {

		unsigned long pc;