path: root/arch/arm/kernel/entry-common.S
diff options
authorDrew Richardson <drew.richardson@arm.com>2015-08-06 18:50:27 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2015-08-07 19:57:02 +0100
commite83dd3770021910293edea6fb2dc2fa306b1bf34 (patch)
tree2a459de6b7f55e869612ae62ac92875948006c6d /arch/arm/kernel/entry-common.S
parent998ef5d81c74c752d74c7925bc370909b84adb9d (diff)
ARM: 8409/1: Mark ret_fast_syscall as a function
ret_fast_syscall runs when user space makes a syscall. However it needs to be marked as such so the ELF information is correct. Before it was: 101: 8000f300 0 NOTYPE LOCAL DEFAULT 2 ret_fast_syscall But with this change it correctly shows as: 101: 8000f300 96 FUNC LOCAL DEFAULT 2 ret_fast_syscall I see this function when using perf to unwind call stacks from kernel space to user space. Without this change I would need to add some special case logic when using the vmlinux ELF information. Signed-off-by: Drew Richardson <drew.richardson@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/entry-common.S')
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 92828a1dec80..b48dd4f37f80 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -61,6 +61,7 @@ work_pending:
movlt scno, #(__NR_restart_syscall - __NR_SYSCALL_BASE)
ldmia sp, {r0 - r6} @ have to reload r0 - r6
b local_restart @ ... and off we go
* "slow" syscall return path. "why" tells us if this was a real syscall.