From: Madhavan Srinivasan maddy@linux.ibm.com
[ Upstream commit 3c9450c053f88e525b2db1e6990cdf34d14e7696 ]
Compilation error: arch/powerpc/perf/perf_regs.c:80:undefined reference to `.is_sier_available'
Currently is_sier_available() is part of core-book3s.c, which is added to build based on CONFIG_PPC_PERF_CTRS.
A config with CONFIG_PERF_EVENTS and without CONFIG_PPC_PERF_CTRS will have a build break because of missing is_sier_available().
In practice it only breaks when CONFIG_FSL_EMB_PERF_EVENT=n because that also guards the usage of is_sier_available(). That only happens with CONFIG_PPC_BOOK3E_64=y and CONFIG_FSL_SOC_BOOKE=n.
Patch adds is_sier_available() in asm/perf_event.h to fix the build break for configs missing CONFIG_PPC_PERF_CTRS.
Fixes: 333804dc3b7a ("powerpc/perf: Update perf_regs structure to include SIER") Reported-by: Aneesh Kumar K.V aneesh.kumar@linux.ibm.com Signed-off-by: Madhavan Srinivasan maddy@linux.ibm.com [mpe: Add detail about CONFIG_FSL_SOC_BOOKE] Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20200614083604.302611-1-maddy@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/include/asm/perf_event.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/include/asm/perf_event.h b/arch/powerpc/include/asm/perf_event.h index eed3954082fa2..1e8b2e1ec1db6 100644 --- a/arch/powerpc/include/asm/perf_event.h +++ b/arch/powerpc/include/asm/perf_event.h @@ -12,6 +12,8 @@
#ifdef CONFIG_PPC_PERF_CTRS #include <asm/perf_event_server.h> +#else +static inline bool is_sier_available(void) { return false; } #endif
#ifdef CONFIG_FSL_EMB_PERF_EVENT