Subject: [PATCH] perf tools: fix build breakage on arm and arm64 targets

From: [email-masked] (Will Deacon)
Date: Mon, 29 Sep 2014 10:22:30 +0100

On Mon, Sep 29, 2014 at 07:59:59AM +0100, Jean Pihet wrote:
> Hi Will,
> 
> On 26 September 2014 19:19, Sudeep Holla <[email-masked]> wrote:
> >
> > On 26/09/14 18:01, Will Deacon wrote:
> >>
> >> Attempting to build the perf tool on arm or arm64 targets results in the
> >> following failure:
> >>
> >> arch/arm/util/unwind-libunwind.c: In function ?libunwind__arch_reg_id?:
> >> arch/arm/util/unwind-libunwind.c:43:3: error: implicit declaration of
> >> function ?pr_err? [-Werror=implicit-function-declaration]
> >>     pr_err("unwind: invalid reg id %d\n", regnum);
> >>     ^
> >> This is due to commit 84f5d36f4866 ("perf tools: Move pr_* debug macros
> >> into debug object") moving the pr_* macros into a new header file, but
> >> failing to update architectures other than x86.
> >>
> >> This patch adds the missing includes, and fixes the build again.
> 
> The fix for ARM is already in the tip tree at
> http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=29a3ce31c38c8f73f4e076b7ffc0876b4f5dd6c3.

Thanks, but that doesn't fix the issue for arm64. I'm also not sure why
these haven't been merged into mainline -- without them, the tool doesn't
even build for arm/arm64 targets.

Will