linux-kernel - [tip:perf/core] perf cs-etm: Remove duplicate GENMASK() define, use linux/bits.h instead

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Message-ID: <tip-69pd3mqvxdlh2shddsc7yhyv@git.kernel.org>
Date:   Mon, 17 Jun 2019 12:36:52 -0700
From:   tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     alexander.shishkin@...ux.intel.com, namhyung@...nel.org,
        jolsa@...hat.com, suzuki.poulose@....com, tglx@...utronix.de,
        peterz@...radead.org, leo.yan@...aro.org,
        linux-kernel@...r.kernel.org, mingo@...nel.org,
        mathieu.poirier@...aro.org, hpa@...or.com, acme@...hat.com
Subject: [tip:perf/core] perf cs-etm: Remove duplicate GENMASK() define, use
 linux/bits.h instead

Commit-ID:  965e176f3c4ae260f21606e19dc3a58d66d8f605
Gitweb:     https://git.kernel.org/tip/965e176f3c4ae260f21606e19dc3a58d66d8f605
Author:     Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Fri, 7 Jun 2019 15:14:27 -0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 10 Jun 2019 16:20:11 -0300

perf cs-etm: Remove duplicate GENMASK() define, use linux/bits.h instead

Suzuki noticed that this should be more useful in a generic header, and
after looking I noticed we have it already in our copy of
include/linux/bits.h in tools/include, so just use it, test built on
x86-64 and ubuntu 19.04 with:

  perfbuilder@...46c9e848e:/$ aarch64-linux-gnu-gcc --version |& head -1
  aarch64-linux-gnu-gcc (Ubuntu/Linaro 8.3.0-6ubuntu1) 8.3.0
  perfbuilder@...46c9e848e:/$

Suggested-by: Suzuki K Poulose <suzuki.poulose@....com>
Link: https://lkml.kernel.org/r/68c1c548-33cd-31e8-100d-7ffad008c7b2@arm.com
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Leo Yan <leo.yan@...aro.org>
Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: coresight@...ts.linaro.org
Cc: linux-arm-kernel@...ts.infradead.org,
Link: https://lkml.kernel.org/n/tip-69pd3mqvxdlh2shddsc7yhyv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/cs-etm.h | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/tools/perf/util/cs-etm.h b/tools/perf/util/cs-etm.h
index 33b57e748c3d..bc848fd095f4 100644
--- a/tools/perf/util/cs-etm.h
+++ b/tools/perf/util/cs-etm.h
@@ -9,6 +9,7 @@
 
 #include "util/event.h"
 #include "util/session.h"
+#include <linux/bits.h>
 
 /* Versionning header in case things need tro change in the future.  That way
  * decoding of old snapshot is still possible.
@@ -161,16 +162,6 @@ struct cs_etm_packet_queue {
 
 #define CS_ETM_INVAL_ADDR 0xdeadbeefdeadbeefUL
 
-/*
- * Create a contiguous bitmask starting at bit position @l and ending at
- * position @h. For example
- * GENMASK_ULL(39, 21) gives us the 64bit vector 0x000000ffffe00000.
- *
- * Carbon copy of implementation found in $KERNEL/include/linux/bitops.h
- */
-#define GENMASK(h, l) \
-	(((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
-
 #define BMVAL(val, lsb, msb)	((val & GENMASK(msb, lsb)) >> lsb)
 
 #define CS_ETM_HEADER_SIZE (CS_HEADER_VERSION_0_MAX * sizeof(u64))