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From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Clark Williams <williams@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Namhyung Kim <namhyung@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
kernel-team@lge.com, Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 01/12] perf machine: Set main kernel end address properly
Date: Wed, 25 Apr 2018 12:59:57 -0300 [thread overview]
Message-ID: <20180425160008.3407-2-acme@kernel.org> (raw)
In-Reply-To: <20180425160008.3407-1-acme@kernel.org>
From: Namhyung Kim <namhyung@kernel.org>
map_groups__fixup_end() was called to set the end addresses of kernel
and module maps. But now since machine__create_modules() sets the end
address of modules properly, the only remaining piece is the kernel map.
We can set it with adjacent module's address directly instead of calling
map_groups__fixup_end(). If there's no module after the kernel map, the
end address will be ~0ULL.
Since it also changes the start address of the kernel map, it needs to
re-insert the map to the kmaps in order to keep a correct ordering. Kim
reported that it caused problems on ARM64.
Reported-by: Kim Phillips <kim.phillips@arm.com>
Tested-by: Kim Phillips <kim.phillips@arm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20180419235915.GA19067@sejong
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/machine.c | 30 ++++++++++++++++++------------
1 file changed, 18 insertions(+), 12 deletions(-)
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 2eca8478e24f..32d50492505d 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1019,13 +1019,6 @@ int machine__load_vmlinux_path(struct machine *machine, enum map_type type)
return ret;
}
-static void map_groups__fixup_end(struct map_groups *mg)
-{
- int i;
- for (i = 0; i < MAP__NR_TYPES; ++i)
- __map_groups__fixup_end(mg, i);
-}
-
static char *get_kernel_version(const char *root_dir)
{
char version[PATH_MAX];
@@ -1233,6 +1226,7 @@ int machine__create_kernel_maps(struct machine *machine)
{
struct dso *kernel = machine__get_kernel(machine);
const char *name = NULL;
+ struct map *map;
u64 addr = 0;
int ret;
@@ -1259,13 +1253,25 @@ int machine__create_kernel_maps(struct machine *machine)
machine__destroy_kernel_maps(machine);
return -1;
}
- machine__set_kernel_mmap(machine, addr, 0);
+
+ /* we have a real start address now, so re-order the kmaps */
+ map = machine__kernel_map(machine);
+
+ map__get(map);
+ map_groups__remove(&machine->kmaps, map);
+
+ /* assume it's the last in the kmaps */
+ machine__set_kernel_mmap(machine, addr, ~0ULL);
+
+ map_groups__insert(&machine->kmaps, map);
+ map__put(map);
}
- /*
- * Now that we have all the maps created, just set the ->end of them:
- */
- map_groups__fixup_end(&machine->kmaps);
+ /* update end address of the kernel map using adjacent module address */
+ map = map__next(machine__kernel_map(machine));
+ if (map)
+ machine__set_kernel_mmap(machine, addr, map->start);
+
return 0;
}
--
2.14.3
next prev parent reply other threads:[~2018-04-25 16:04 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-25 15:59 [GIT PULL 00/12] perf/urgent fixes Arnaldo Carvalho de Melo
2018-04-25 15:59 ` Arnaldo Carvalho de Melo [this message]
2018-04-25 15:59 ` [PATCH 02/12] perf list: Remove s390 specific strcmp_cpuid_cmp function Arnaldo Carvalho de Melo
2018-04-25 15:59 ` [PATCH 03/12] perf test: Adapt test case record+probe_libc_inet_pton.sh for s390 Arnaldo Carvalho de Melo
2018-04-25 16:00 ` [PATCH 04/12] perf stat: Keep the / modifier separator in fallback Arnaldo Carvalho de Melo
2018-04-25 16:00 ` [PATCH 05/12] perf pmu: Fix pmu events parsing rule Arnaldo Carvalho de Melo
2018-05-03 8:25 ` Adrian Hunter
2018-05-03 10:37 ` Jiri Olsa
2018-05-03 11:38 ` Adrian Hunter
2018-05-03 11:47 ` Jiri Olsa
2018-05-04 16:02 ` Jiri Olsa
2018-05-06 3:43 ` Andi Kleen
2018-05-06 14:28 ` [PATCH] perf tools: Fix parser for empty pmu terms case Jiri Olsa
2018-05-06 16:34 ` Liang, Kan
2018-05-07 7:21 ` Adrian Hunter
2018-05-07 8:12 ` Jiri Olsa
2018-05-07 15:04 ` Arnaldo Carvalho de Melo
2018-05-07 18:37 ` [PATCH 05/12] perf pmu: Fix pmu events parsing rule Arnaldo Carvalho de Melo
2018-05-07 19:16 ` Jiri Olsa
2018-05-07 19:26 ` Arnaldo Carvalho de Melo
2018-05-07 19:24 ` Arnaldo Carvalho de Melo
2018-05-07 19:42 ` Jiri Olsa
2018-04-25 16:00 ` [PATCH 06/12] perf evsel: Disable write_backward for leader sampling group events Arnaldo Carvalho de Melo
2018-04-25 16:00 ` [PATCH 07/12] perf mem: Document incorrect and missing options Arnaldo Carvalho de Melo
2018-04-25 16:00 ` [PATCH 08/12] perf record: Fix s390 undefined record__auxtrace_init() return value Arnaldo Carvalho de Melo
2018-04-25 16:00 ` [PATCH 09/12] perf pmu: Fix core PMU alias list for X86 platform Arnaldo Carvalho de Melo
2018-04-25 16:00 ` [PATCH 10/12] perf stat: Print out hint for mixed PMU group error Arnaldo Carvalho de Melo
2018-04-25 16:00 ` [PATCH 11/12] perf evsel: Only fall back group read for leader Arnaldo Carvalho de Melo
2018-04-25 16:00 ` [PATCH 12/12] perf stat: Fix duplicate PMU name for interval print Arnaldo Carvalho de Melo
2018-04-26 5:33 ` [GIT PULL 00/12] perf/urgent fixes Ingo Molnar
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