[PATCH] perf tools: Fix build failures on ppc64le

Namhyung Kim posted 1 patch 1 month, 2 weeks ago
tools/perf/util/evsel.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
[PATCH] perf tools: Fix build failures on ppc64le
Posted by Namhyung Kim 1 month, 2 weeks ago
  util/evsel.c: In function 'store_event':
  util/evsel.c:138:50: error: format '%llu' expects argument of type 'long long unsigned int',
                       but argument 6 has type '__u64' {aka 'long unsigned int'} [-Werror=format=]
    138 |         snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir,
        |                                               ~~~^
        |                                                  |
        |                                                  long long unsigned int
        |                                               %lu
    139 |                  attr->type, attr->config, fd);
        |                              ~~~~~~~~~~~~
        |                                  |
        |                                  __u64 {aka long unsigned int}
  util/evsel.c:147:41: error: format '%llu' expects argument of type 'long long unsigned int',
                       but argument 4 has type '__u64' {aka 'long unsigned int'} [-Werror=format=]
    147 |         if (fprintf(file, "[event-%d-%llu-%d]\n",
        |                                      ~~~^
        |                                         |
        |                                         long long unsigned int
        |                                      %lu
    148 |                     attr->type, attr->config, fd) < 0) {
        |                                 ~~~~~~~~~~~~
        |                                     |
        |                                     __u64 {aka long unsigned int}
  util/evsel.c:164:33: error: format '%llu' expects argument of type 'long long unsigned int',
                       but argument 3 has type '__u64' {aka 'long unsigned int'} [-Werror=format=]
    164 |         WRITE_ASS(config,  "llu");
        |                                 ^
  util/evsel.c:122:28: note: in definition of macro '__WRITE_ASS'
    122 |         if (fprintf(file, #str "=%"fmt "\n", data) < 0) {               \
        |                            ^~~
  util/evsel.c:164:9: note: in expansion of macro 'WRITE_ASS'
    164 |         WRITE_ASS(config,  "llu");
        |         ^~~~~~~~~
  ...
    cc1: all warnings being treated as errors

Fixes: f90a291448877ab45 ("perf test: Remove C test wrapper for attr.py")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
Hi Stephen, can you please test if this patch fixes it?

Thanks,
Namhyung

 tools/perf/util/evsel.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 37c338b0f8b2bb04..88e98c0b10528a63 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -108,7 +108,7 @@ static int store_event(struct perf_event_attr *attr, pid_t pid, struct perf_cpu
 	char path[PATH_MAX];
 	char *dir = getenv("PERF_TEST_ATTR");
 
-	snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir,
+	snprintf(path, PATH_MAX, "%s/event-%d-%"PRI_lu64"-%d", dir,
 		 attr->type, attr->config, fd);
 
 	file = fopen(path, "w+");
@@ -117,7 +117,7 @@ static int store_event(struct perf_event_attr *attr, pid_t pid, struct perf_cpu
 		return -1;
 	}
 
-	if (fprintf(file, "[event-%d-%llu-%d]\n",
+	if (fprintf(file, "[event-%d-%"PRI_lu64"-%d]\n",
 		    attr->type, attr->config, fd) < 0) {
 		perror("test attr - failed to write event file");
 		fclose(file);
@@ -134,10 +134,10 @@ static int store_event(struct perf_event_attr *attr, pid_t pid, struct perf_cpu
 	/* struct perf_event_attr */
 	WRITE_ASS(type,   PRIu32);
 	WRITE_ASS(size,   PRIu32);
-	WRITE_ASS(config,  "llu");
-	WRITE_ASS(sample_period, "llu");
-	WRITE_ASS(sample_type,   "llu");
-	WRITE_ASS(read_format,   "llu");
+	WRITE_ASS(config,  PRI_lu64);
+	WRITE_ASS(sample_period, PRI_lu64);
+	WRITE_ASS(sample_type,   PRI_lu64);
+	WRITE_ASS(read_format,   PRI_lu64);
 	WRITE_ASS(disabled,       "d");
 	WRITE_ASS(inherit,        "d");
 	WRITE_ASS(pinned,         "d");
@@ -168,10 +168,10 @@ static int store_event(struct perf_event_attr *attr, pid_t pid, struct perf_cpu
 	WRITE_ASS(use_clockid,    "d");
 	WRITE_ASS(wakeup_events, PRIu32);
 	WRITE_ASS(bp_type, PRIu32);
-	WRITE_ASS(config1, "llu");
-	WRITE_ASS(config2, "llu");
-	WRITE_ASS(branch_sample_type, "llu");
-	WRITE_ASS(sample_regs_user,   "llu");
+	WRITE_ASS(config1, PRI_lu64);
+	WRITE_ASS(config2, PRI_lu64);
+	WRITE_ASS(branch_sample_type, PRI_lu64);
+	WRITE_ASS(sample_regs_user,   PRI_lu64);
 	WRITE_ASS(sample_stack_user,  PRIu32);
 
 	fclose(file);
-- 
2.47.0.rc1.288.g06298d1525-goog
Re: [PATCH] perf tools: Fix build failures on ppc64le
Posted by Stephen Rothwell 1 month, 2 weeks ago
Hi Namhyung,

On Thu, 10 Oct 2024 16:57:43 -0700 Namhyung Kim <namhyung@kernel.org> wrote:
>
> Hi Stephen, can you please test if this patch fixes it?

Sorry, I still get the same errors.

-- 
Cheers,
Stephen Rothwell
Re: [PATCH] perf tools: Fix build failures on ppc64le
Posted by Namhyung Kim 1 month, 2 weeks ago
On Fri, Oct 11, 2024 at 11:48:58AM +1100, Stephen Rothwell wrote:
> Hi Namhyung,
> 
> On Thu, 10 Oct 2024 16:57:43 -0700 Namhyung Kim <namhyung@kernel.org> wrote:
> >
> > Hi Stephen, can you please test if this patch fixes it?
> 
> Sorry, I still get the same errors.

Ok, thanks for the test.  I'll drop the series and rebase the branch.

Thanks,
Namhyung
Re: [PATCH] perf tools: Fix build failures on ppc64le
Posted by Ian Rogers 1 month, 2 weeks ago
On Thu, Oct 10, 2024 at 11:34 PM Namhyung Kim <namhyung@kernel.org> wrote:
>
> On Fri, Oct 11, 2024 at 11:48:58AM +1100, Stephen Rothwell wrote:
> > Hi Namhyung,
> >
> > On Thu, 10 Oct 2024 16:57:43 -0700 Namhyung Kim <namhyung@kernel.org> wrote:
> > >
> > > Hi Stephen, can you please test if this patch fixes it?
> >
> > Sorry, I still get the same errors.
>
> Ok, thanks for the test.  I'll drop the series and rebase the branch.

Is this a define issue? I dislike that PPC has a #define
__SANE_USERSPACE_TYPES__, we might be trying to fix something
inherently insane.

The failure at:
```
    138 |         snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir,
        |                                               ~~~^
        |                                                  |
        |                                                  long long
unsigned int
        |                                               %lu
    139 |                  attr->type, attr->config, fd);
        |                              ~~~~~~~~~~~~
        |                                  |
        |                                  __u64 {aka long unsigned int}
  util/evsel.c:147:41: error: format '%llu' expects argument of type
'long long unsigned int',
                       but argument 4 has type '__u64' {aka 'long
unsigned int'} [-Werror=format=]
```
is for code moved from here:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/perf/tests/attr.c#n77
```
snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir,
attr->type, attr->config, fd);
```
ie the code is identical, so why does it compile in one file and not in another?

Elsewhere for PPC we carry:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/perf/tests/bp_account.c#n3
```
/*
 * Powerpc needs __SANE_USERSPACE_TYPES__ before <linux/types.h> to select
 * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu.
 */
#define __SANE_USERSPACE_TYPES__
```
Given the comment I suspect we need to do similar to fix this.
Stephen, could you test?

Thanks,
Ian
Re: [PATCH] perf tools: Fix build failures on ppc64le
Posted by Stephen Rothwell 1 month, 2 weeks ago
Hi Ian,

On Fri, 11 Oct 2024 00:05:21 -0700 Ian Rogers <irogers@google.com> wrote:
>
> Elsewhere for PPC we carry:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/perf/tests/bp_account.c#n3
> ```
> /*
>  * Powerpc needs __SANE_USERSPACE_TYPES__ before <linux/types.h> to select
>  * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu.
>  */
> #define __SANE_USERSPACE_TYPES__
> ```
> Given the comment I suspect we need to do similar to fix this.
> Stephen, could you test?

I added that to the start of tools/perf/util/evsel.c and it builds fine.

Thanks
-- 
Cheers,
Stephen Rothwell