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SubjectRe: [PATCH] perftools: Fix build error
Em Thu, Jan 20, 2011 at 06:44:38PM +0300, Denis Kirjanov escreveu:
> On 01/20/2011 02:47 PM, Ingo Molnar wrote:
> >
> > * Denis Kirjanov <dkirjanov@kernel.org> wrote:
> >
> >> Fix perftools build error (ppc64 box) with PERF_VERSION = 2.6.38.rc1.47.g12fcdb
> >> CC builtin-top.o
> >> cc1: warnings being treated as errors
> >> builtin-top.c: In function 'print_sym_table':
> >> builtin-top.c:540: error: format '%Ld' expects type 'long long int', but argument 2 has type '__u64'
> >>
> >> Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
> >> ---
> >> tools/perf/builtin-top.c | 2 +-
> >> 1 files changed, 1 insertions(+), 1 deletions(-)
> >>
> >> diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> >> index 05344c6..8202a2e 100644
> >> --- a/tools/perf/builtin-top.c
> >> +++ b/tools/perf/builtin-top.c
> >> @@ -537,7 +537,7 @@ static void print_sym_table(void)
> >> if (nr_counters == 1 || !display_weighted) {
> >> struct perf_evsel *first;
> >> first = list_entry(evsel_list.next, struct perf_evsel, node);
> >> - printf("%Ld", first->attr.sample_period);
> >> + printf("%Ld", (unsigned long long)first->attr.sample_period);
> >
> > Wouldnt %Lu solve this in a cleaner way?
> >
> > Thanks,
> >
> > Ingo
> >
> I think that cleaner way is to use PRIu64.

Fuglier, definetely, but indeed, more portable, as I noticed when trying
to build the tools on a RHEL4/Fedora3 machine, as there are people using
such old beasts with modern kernels.

I'll take the patch for perf/urgent, as it prevents building in .38,
please consider going thru tools/perf and patching the other %Ld and
%Lu instances :-)

- Arnaldo

>
> >From 492bf54effdf8c154e76c4ca734f27ce1db46df6 Mon Sep 17 00:00:00 2001
> From: Denis Kirjanov <dkirjanov@kernel.org>
> Date: Thu, 20 Jan 2011 18:34:56 +0300
> Subject: [PATCH] perftools: Fix build error
>
> CC perf.o
> CC builtin-top.o
> cc1: warnings being treated as errors
> builtin-top.c: In function 'print_sym_table':
> builtin-top.c:540: error: format '%Ld' expects type 'long long int', but argument 2 has type '__u64'
> make: *** [builtin-top.o] Error 1
>
>
> Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
> ---
> tools/perf/builtin-top.c | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> index 05344c6..a7bc50b 100644
> --- a/tools/perf/builtin-top.c
> +++ b/tools/perf/builtin-top.c
> @@ -40,6 +40,7 @@
> #include <stdio.h>
> #include <termios.h>
> #include <unistd.h>
> +#include <inttypes.h>
>
> #include <errno.h>
> #include <time.h>
> @@ -537,7 +538,7 @@ static void print_sym_table(void)
> if (nr_counters == 1 || !display_weighted) {
> struct perf_evsel *first;
> first = list_entry(evsel_list.next, struct perf_evsel, node);
> - printf("%Ld", first->attr.sample_period);
> + printf("%" PRIu64, first->attr.sample_period);
> if (freq)
> printf("Hz ");
> else
> --
> 1.7.3.4


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