https://github.com/torvalds/linux
Revision 1bf7d836e57ba4943e33e163e730cd77ab837572 authored by Martin Liška on 12 August 2022, 11:40:49 UTC, committed by Arnaldo Carvalho de Melo on 12 August 2022, 13:27:21 UTC
When one uses -p $not_existing_pid, the output of --help is printed:
$ perf record -p 123456789 2>&1 | head -n3
Usage: perf record [<options>] [<command>]
or: perf record [<options>] -- <command> [<options>]
Let's change it something similar what perf top -p $not_existing_pid
prints:
$ ./perf top -p 123456789 --stdio
Error:
Couldn't create thread/CPU maps: No such process
Newly suggested error message:
$ ./perf record -p 123456789
Couldn't create thread/CPU maps: No such process
Signed-off-by: Martin Liška <mliska@suse.cz>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lore.kernel.org/lkml/8e00eda1-4de0-2c44-ce67-d4df48ac1f7c@suse.cz
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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History 
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Tip revision: 1bf7d836e57ba4943e33e163e730cd77ab837572 authored by Martin Liška on 12 August 2022, 11:40:49 UTC
perf record: Improve error message of -p not_existing_pid
perf record: Improve error message of -p not_existing_pid
Tip revision: 1bf7d83
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | -rw-r--r-- | 19.8 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 71 bytes |
| .gitattributes | -rw-r--r-- | 62 bytes |
| .gitignore | -rw-r--r-- | 1.9 KB |
| .mailmap | -rw-r--r-- | 23.5 KB |
| COPYING | -rw-r--r-- | 496 bytes |
| CREDITS | -rw-r--r-- | 99.1 KB |
| Kbuild | -rw-r--r-- | 1.3 KB |
| Kconfig | -rw-r--r-- | 555 bytes |
| MAINTAINERS | -rw-r--r-- | 662.9 KB |
| Makefile | -rw-r--r-- | 64.1 KB |
| README | -rw-r--r-- | 727 bytes |
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