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From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	David Ahern <dsahern@gmail.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [PATCH 8/9] perf tools: Do not create kernel maps in sample__resolve
Date: Thu, 15 Feb 2018 13:26:34 +0100	[thread overview]
Message-ID: <20180215122635.24029-9-jolsa@kernel.org> (raw)
In-Reply-To: <20180215122635.24029-1-jolsa@kernel.org>

There's no need for kernel maps to be allocated at this
point - sample processing.

We search for kernel maps using the kernel map_groups in
machine::kmaps which is static. If vmlinux maps for any
reason still don't exist, the search correctly fails
because they are not in the map group.

Link: http://lkml.kernel.org/n/tip-f1swg55ooc3sihcvadgzkw1z@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/util/event.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 4644e751a3e3..f0a6cbd033cc 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -1588,17 +1588,6 @@ int machine__resolve(struct machine *machine, struct addr_location *al,
 		return -1;
 
 	dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
-	/*
-	 * Have we already created the kernel maps for this machine?
-	 *
-	 * This should have happened earlier, when we processed the kernel MMAP
-	 * events, but for older perf.data files there was no such thing, so do
-	 * it now.
-	 */
-	if (sample->cpumode == PERF_RECORD_MISC_KERNEL &&
-	    machine__kernel_map(machine) == NULL)
-		machine__create_kernel_maps(machine);
-
 	thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, al);
 	dump_printf(" ...... dso: %s\n",
 		    al->map ? al->map->dso->long_name :
-- 
2.13.6

  parent reply	other threads:[~2018-02-15 12:28 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-15 12:26 [PATCHv3 0/9] perf tool: Assorted fixes Jiri Olsa
2018-02-15 12:26 ` [PATCH 1/9] tools lib symbol: Skip non-address kallsyms line Jiri Olsa
2018-02-17 11:24   ` [tip:perf/core] " tip-bot for Jiri Olsa
2018-02-15 12:26 ` [PATCH 2/9] perf tools: Check if we read regular file in dso__load Jiri Olsa
2018-02-17 11:24   ` [tip:perf/core] perf symbols: Check if we read regular file in dso__load() tip-bot for Jiri Olsa
2018-02-15 12:26 ` [PATCH 3/9] perf tools: Free root_dir in machine__init error path Jiri Olsa
2018-02-17 11:25   ` [tip:perf/core] perf machine: Free root_dir in machine__init() " tip-bot for Jiri Olsa
2018-02-15 12:26 ` [PATCH 4/9] perf tools: Move kernel mmap name into struct machine Jiri Olsa
2018-02-17 11:25   ` [tip:perf/core] perf machine: " tip-bot for Jiri Olsa
2018-02-15 12:26 ` [PATCH 5/9] perf tools: Generalize machine__set_kernel_mmap function Jiri Olsa
2018-02-17 11:26   ` [tip:perf/core] perf machine: Generalize machine__set_kernel_mmap() tip-bot for Jiri Olsa
2018-02-15 12:26 ` [PATCH 6/9] perf tools: Don't search for active kernel start in __machine__create_kernel_maps Jiri Olsa
2018-02-17 11:26   ` [tip:perf/core] perf machine: " tip-bot for Jiri Olsa
2018-02-19  2:20   ` [PATCH 6/9] perf tools: " Namhyung Kim
2018-02-19 10:01     ` Jiri Olsa
2018-02-19 10:19       ` Namhyung Kim
2018-02-19 10:49         ` Jiri Olsa
2018-02-19 12:18           ` Arnaldo Carvalho de Melo
2018-04-11 23:07             ` [PATCH] Revert "perf machine: Fix paranoid check in machine__set_kernel_mmap()" Kim Phillips
2018-04-11 23:31               ` Namhyung Kim
2018-04-12  0:29                 ` Kim Phillips
2018-04-12  1:57                   ` Namhyung Kim
2018-04-13  0:09                     ` Kim Phillips
2018-04-13  7:36                       ` Namhyung Kim
2018-02-21 10:25         ` [tip:perf/core] perf machine: Fix paranoid check in machine__set_kernel_mmap() tip-bot for Namhyung Kim
2018-02-19 12:21     ` [PATCH 6/9] perf tools: Don't search for active kernel start in __machine__create_kernel_maps Arnaldo Carvalho de Melo
2018-02-19 14:05       ` Namhyung Kim
2018-02-15 12:26 ` [PATCH 7/9] perf tools: Remove machine__load_kallsyms function Jiri Olsa
2018-02-17 11:27   ` [tip:perf/core] perf machine: Remove machine__load_kallsyms() tip-bot for Jiri Olsa
2018-02-15 12:26 ` Jiri Olsa [this message]
2018-02-17 11:27   ` [tip:perf/core] perf tools: Do not create kernel maps in sample__resolve() tip-bot for Jiri Olsa
2018-02-15 12:26 ` [PATCH 9/9] perf tests: Use arch__compare_symbol_names to compare symbols Jiri Olsa
2018-02-15 14:27   ` Arnaldo Carvalho de Melo
2018-02-15 14:48     ` Naveen N. Rao
2018-02-15 15:10       ` Arnaldo Carvalho de Melo
2018-02-17 11:28   ` [tip:perf/core] " tip-bot for Jiri Olsa

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