scripts/: spelling fixes

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

Merge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2020-06-24' into staging

Block patches:
- Two iotest fixes

# gpg: Signature made Wed 24 Jun 2020 09:00:51 BST

Merge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2020-06-24' into staging

Block patches:
- Two iotest fixes

# gpg: Signature made Wed 24 Jun 2020 09:00:51 BST
# gpg: using RSA key 91BEB60A30DB3E8857D11829F407DB0061D5CF40
# gpg: issuer "mreitz@redhat.com"
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full]
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1 1829 F407 DB00 61D5 CF40

* remotes/maxreitz/tags/pull-block-2020-06-24:
iotests: don't test qcow2.py inside 291
iotests: Fix 051 output after qdev_init_nofail() removal

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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scripts/performance: Add topN_callgrind.py script

Python script that prints the top N most executed functions in QEMU
using callgrind.

Syntax:
topN_callgrind.py [-h] [-n] <n

scripts/performance: Add topN_callgrind.py script

Python script that prints the top N most executed functions in QEMU
using callgrind.

Syntax:
topN_callgrind.py [-h] [-n] <number of displayed top functions> -- \
<qemu executable> [<qemu executable options>] \
<target executable> [<target execurable options>]

[-h] - Print the script arguments help message.
[-n] - Specify the number of top functions to print.
- If this flag is not specified, the tool defaults to 25.

Example of usage:
topN_callgrind.py -n 20 -- qemu-arm coulomb_double-arm

Example Output:
No. Percentage Function Name Source File
---- --------- ------------------ ------------------------------
1 24.577% 0x00000000082db000 ???
2 20.467% float64_mul <qemu>/fpu/softfloat.c
3 14.720% float64_sub <qemu>/fpu/softfloat.c
4 13.864% float64_add <qemu>/fpu/softfloat.c
5 4.876% helper_mulsd <qemu>/target/i386/ops_sse.h
6 3.767% helper_subsd <qemu>/target/i386/ops_sse.h
7 3.549% helper_addsd <qemu>/target/i386/ops_sse.h
8 2.185% helper_ucomisd <qemu>/target/i386/ops_sse.h
9 1.667% helper_lookup_tb_ptr <qemu>/include/exec/tb-lookup.h
10 1.662% f64_compare <qemu>/fpu/softfloat.c
11 1.509% helper_lookup_tb_ptr <qemu>/accel/tcg/tcg-runtime.c
12 0.635% helper_lookup_tb_ptr <qemu>/include/exec/exec-all.h
13 0.616% float64_div <qemu>/fpu/softfloat.c
14 0.502% helper_pand_xmm <qemu>/target/i386/ops_sse.h
15 0.502% float64_mul <qemu>/include/fpu/softfloat.h
16 0.476% helper_lookup_tb_ptr <qemu>/target/i386/cpu.h
17 0.437% float64_compare_quiet <qemu>/fpu/softfloat.c
18 0.414% helper_pxor_xmm <qemu>/target/i386/ops_sse.h
19 0.353% round_to_int <qemu>/fpu/softfloat.c
20 0.347% helper_cc_compute_all <qemu>/target/i386/cc_helper.c

Signed-off-by: Ahmed Karaman <ahmedkhaledkaraman@gmail.com>
Signed-off-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Message-Id: <20200626164546.22102-3-ahmedkhaledkaraman@gmail.com>

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