First very raw version at having a central 'perf' command and
a list of subcommands:
perf top
perf stat
perf record
perf report
...
This is done by picking up Git's collection of utility functions,
and hacking them to build fine in this new environment.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
We'd like to have a similar user-space structure as Git has, for the
perfcounter tools - so copy in Git's toplevel makefile as-is.
We'll strip it down in subsequent commits to make it fit the
perfcounters code.
The Git version used: 66996ec: Sync with 1.6.2.4
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The glib dependency in kerneltop.c is only for a little bit of list
manipulation, and I find it inconvenient. This adds a 'next' field to
struct source_line, which lets us link them together into a list. The
code to do the linking ourselves turns out to be no longer or more
difficult than using glib.
This also fixes a few other problems:
- We need to #include <limits.h> to get PATH_MAX on powerpc.
- We need to #include <linux/types.h> rather than have our own
definitions of __u64 and __s64; on powerpc the installed headers
define them to be unsigned long and long respectively, and if we
have our own, different definition here that causes a compile error.
- This takes out the x86 setting of errno from -ret in
sys_perf_counter_open. My experiments on x86 indicate that the
glibc syscall() does this for us already.
- We had two CPU migration counters in the default set, which seems
unnecessary; I changed one of them to a context switch counter.
- In perfstat mode we were printing CPU cycles and instructions as
milliseconds, and the cpu clock and task clock counters as events.
This fixes that.
- In perfstat mode we were still printing a blank line after the first
counter, which was a holdover from when a task clock counter was
automatically included as the first counter. This removes the blank
line.
- On a test machine here, parse_symbols() and parse_vmlinux() were
taking long enough (almost 0.5 seconds) for the mmap buffer to
overflow before we got to the first mmap_read() call, so this moves
them before we open all the counters.
- The error message if sys_perf_counter_open fails needs to use errno,
not -fd[i][counter].
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Mike Galbraith <efault@gmx.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Orig-LKML-Reference: <18888.29986.340328.540512@cargo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Remove now unified perfstat.c and perf_counter.h, and link to the
in-kernel perf_counter.h.
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Orig-LKML-Reference: <20090323172417.677932499@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Initial version of kerneltop.c and perfstat.c.
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
