kernel/tools/perf/util/bpf-loader.c, branch linux-5.2.y

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2019-03-06T15:59:36Z

Pull perf updates from Ingo Molnar: "Lots of tooling updates - too many to list, here's a few highlights: - Various subcommand updates to 'perf trace', 'perf report', 'perf record', 'perf annotate', 'perf script', 'perf test', etc. - CPU and NUMA topology and affinity handling improvements, - HW tracing and HW support updates: - Intel PT updates - ARM CoreSight updates - vendor HW event updates - BPF updates - Tons of infrastructure updates, both on the build system and the library support side - Documentation updates. - ... and lots of other changes, see the changelog for details. Kernel side updates: - Tighten up kprobes blacklist handling, reduce the number of places where developers can install a kprobe and hang/crash the system. - Fix/enhance vma address filter handling. - Various PMU driver updates, small fixes and additions. - refcount_t conversions - BPF updates - error code propagation enhancements - misc other changes" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (238 commits) perf script python: Add Python3 support to syscall-counts-by-pid.py perf script python: Add Python3 support to syscall-counts.py perf script python: Add Python3 support to stat-cpi.py perf script python: Add Python3 support to stackcollapse.py perf script python: Add Python3 support to sctop.py perf script python: Add Python3 support to powerpc-hcalls.py perf script python: Add Python3 support to net_dropmonitor.py perf script python: Add Python3 support to mem-phys-addr.py perf script python: Add Python3 support to failed-syscalls-by-pid.py perf script python: Add Python3 support to netdev-times.py perf tools: Add perf_exe() helper to find perf binary perf script: Handle missing fields with -F +.. perf data: Add perf_data__open_dir_data function perf data: Add perf_data__(create_dir|close_dir) functions perf data: Fail check_backup in case of error perf data: Make check_backup work over directories perf tools: Add rm_rf_perf_data function perf tools: Add pattern name checking to rm_rf perf tools: Add depth checking to rm_rf perf data: Add global path holder ...

tools: libbpf: add a correctly named define for map iteration

2019-02-28T23:53:45Z

For historical reasons the helper to loop over maps in an object is called bpf_map__for_each while it really should be called bpf_object__for_each_map. Rename and add a correctly named define for backward compatibility. Switch all in-tree users to the correct name (Quentin). Signed-off-by: Jakub Kicinski Reviewed-by: Quentin Monnet Signed-off-by: Daniel Borkmann

perf bpf-loader: Remove unecessary includes from bpf-loader.h

2019-02-06T13:00:39Z

To cut the header dep tree, to get unecessary object rebuilds to be reduced when a change happens in headers. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-ph72xhl9moqa0g1hxcyudwfn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libbpf: fix libbpf_print

2019-02-05T01:45:31Z

With the recent print rework we now have the following problem: pr_{warning,info,debug} expand to __pr which calls libbpf_print. libbpf_print does va_start and calls __libbpf_pr with va_list argument. In __base_pr we again do va_start. Because the next argument is a va_list, we don't get correct pointer to the argument (and print noting in my case, I don't know why it doesn't crash tbh). Fix this by changing libbpf_print_fn_t signature to accept va_list and remove unneeded calls to va_start in the existing users. Alternatively, this can we solved by exporting __libbpf_pr and changing __pr macro to (and killing libbpf_print): { if (__libbpf_pr) __libbpf_pr(level, "libbpf: " fmt, ##__VA_ARGS__) } Signed-off-by: Stanislav Fomichev Acked-by: Yonghong Song Signed-off-by: Alexei Starovoitov

tools/bpf: simplify libbpf API function libbpf_set_print()

2019-02-04T17:40:59Z

Currently, the libbpf API function libbpf_set_print() takes three function pointer parameters for warning, info and debug printout respectively. This patch changes the API to have just one function pointer parameter and the function pointer has one additional parameter "debugging level". So if in the future, if the debug level is increased, the function signature won't change. Signed-off-by: Yonghong Song Signed-off-by: Alexei Starovoitov

perf bpf-loader: Fix debugging message typo

2018-12-17T17:56:39Z

Go over the tools/ files that are maintained in Arnaldo's tree and fix common typos: half of them were in comments, the other half in JSON files. No change in functionality intended. Committer notes: This was split from a larger patch as there are code that is, additionally, maintained outside the kernel tree, so to ease cherry picking and/or backporting, split this into multiple patches. This one has information that is presented to the user, albeit in debug mode. Signed-off-by: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/20181203102200.GA104797@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf bpf: Use ERR_CAST instead of ERR_PTR(PTR_ERR())

2018-12-17T17:54:36Z

Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...)). This makes it more readable and also fix this warning detected by err_cast.cocci: tools/perf/util/bpf-loader.c:1606:11-18: WARNING: ERR_CAST can be used with op Signed-off-by: Wen Yang Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Julia Lawall Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wen Yang Cc: zhong.weidong@zte.com.cn Link: http://lkml.kernel.org/r/20181127090610.28488-1-wen.yang99@zte.com.cn Signed-off-by: Arnaldo Carvalho de Melo

perf bpf-loader: use PTR_ERR_OR_ZERO inetead of return code

2018-09-19T13:25:09Z

Use PTR_ERR_OR_ZERO() in bpf__setup_stdout() return code instead of open coded equivalent. Signed-off-by: Ding Xiang Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1536284082-23466-2-git-send-email-dingxiang@cmss.chinamobile.com Signed-off-by: Arnaldo Carvalho de Melo

perf bpf: Make bpf__setup_output_event() return the bpf-output event

2018-08-08T18:55:58Z

We're calling it to setup that event, and we'll need it later to decide if the bpf-output event we're handling is the one setup for a specific purpose, return it using ERR_PTR, etc. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-zhachv7il2n1lopt9aonwhu7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf bpf: Add bpf__setup_output_event() strerror() counterpart

2018-08-08T18:55:56Z

That is just bpf__strerror_setup_stdout() renamed to the more general "setup_output_event" method, keep the existing stdout() as a wrapper. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-nwnveo428qn0b48axj50vkc7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo