[LTP] [PATCH v4 3/7] syscalls/swapon03: use tst_max_swapfiles() and GET_USED_SWAPFILES() api

[Petr Vorel]

Hi Xu,

I see swapon03 failures on aarch64 and ppc64le on SLES and openSUSE after this commit.

Here is timeout after 31s:

# ./swapon03
...
tst_test.c:1701: TINFO: === Testing on ext2 ===
tst_test.c:1117: TINFO: Formatting /dev/loop0 with ext2 opts='' extra opts=''
mke2fs 1.47.0 (5-Feb-2023)
tst_test.c:1131: TINFO: Mounting /dev/loop0 to /tmp/LTP_swaVqwa6f/mntpoint fstyp=ext2 flags=0
tst_ioctl.c:26: TINFO: FIBMAP ioctl is supported
tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz'
Test timeouted, sending SIGKILL!
tst_test.c:1679: TINFO: If you are running on slow machine, try exporting LTP_TIMEOUT_MUL > 1
tst_test.c:1681: TBROK: Test killed! (timeout?)

Summary:
passed   0
failed   0
broken   1
skipped  0
warnings 0
### TEST swapon03 COMPLETE >>> 2.

I tried to run with .max_runtime = 60, but even then it fails after 1m 30s:
...
tst_supported_fs_types.c:97: TINFO: Kernel supports tmpfs
tst_supported_fs_types.c:49: TINFO: mkfs is not needed for tmpfs
tst_test.c:1701: TINFO: === Testing on ext2 ===
tst_test.c:1117: TINFO: Formatting /dev/loop0 with ext2 opts='' extra opts=''
mke2fs 1.47.0 (5-Feb-2023)
tst_test.c:1131: TINFO: Mounting /dev/loop0 to /tmp/LTP_swaQsjhAp/mntpoint fstyp=ext2 flags=0
tst_ioctl.c:26: TINFO: FIBMAP ioctl is supported
tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz'
Test timeouted, sending SIGKILL!
tst_test.c:1679: TINFO: If you are running on slow machine, try exporting LTP_TIMEOUT_MUL > 1
tst_test.c:1681: TBROK: Test killed! (timeout?)

Summary:
passed   0
failed   0
broken   1
skipped  0
warnings 0

I'm trying with LTP_TIMEOUT_MUL=3.

BTW there is still broken swapoff01 on master on ppc64le which I reported [1]:
libswap.c:153: TBROK: Failed to create swapfile
(obviously no change in this patchset)

But I'll ping Li separately.

Kind regards,
Petr

[1] https://lore.kernel.org/ltp/20240131190122.GB30901@pevik/