Skip to content

L
linux
Switch branch/tag
  1. 08 Feb, 2011 6 commits
    • Jiri Olsa's avatar
      tracing: Add unstable sched clock note to the warning · 5e38ca8f
      Jiri Olsa authored 
      The warning "Delta way too big" warning might appear on a system with
unstable shed clock right after the system is resumed and tracing
was enabled during the suspend.

Since it's not realy bug, and the unstable sched clock is working
fast and reliable otherwise, Steven suggested to keep using the
sched clock in any case and just to make note in the warning itself.
Signed-off-by: default avatarJiri Olsa <jolsa@redhat.com>
LKML-Reference: <1296649698-6003-1-git-send-email-jolsa@redhat.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      5e38ca8f
    • Ian Munsie's avatar
      tracing/syscalls: Early terminate search for sys_ni_syscall · ae07f551
      Ian Munsie authored 
      Many system calls are unimplemented and mapped to sys_ni_syscall, but at
boot ftrace would still search through every syscall metadata entry for
a match which wouldn't be there.

This patch adds causes the search to terminate early if the system call
is not mapped.
Signed-off-by: default avatarIan Munsie <imunsie@au1.ibm.com>
LKML-Reference: <1296703645-18718-7-git-send-email-imunsie@au1.ibm.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      ae07f551
    • Ian Munsie's avatar
      tracing/syscalls: Allow arch specific syscall symbol matching · b2d55496
      Ian Munsie authored 
      Some architectures have unusual symbol names and the generic code to
match the symbol name with the function name for the syscall metadata
will fail. For example, symbols on PPC64 start with a period and the
generic code will fail to match them.

This patch moves the match logic out into a separate function which an
arch can override by defining ARCH_HAS_SYSCALL_MATCH_SYM_NAME in
asm/ftrace.h and implementing arch_syscall_match_sym_name.
Signed-off-by: default avatarIan Munsie <imunsie@au1.ibm.com>
LKML-Reference: <1296703645-18718-5-git-send-email-imunsie@au1.ibm.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      b2d55496
    • Ian Munsie's avatar
      tracing/syscalls: Make arch_syscall_addr weak · c763ba06
      Ian Munsie authored 
      Some architectures use non-trivial system call tables and will not work
with the generic arch_syscall_addr code. For example, PowerPC64 uses a
table of twin long longs.

This patch makes the generic arch_syscall_addr weak to allow
architectures with non-trivial system call tables to override it.
Signed-off-by: default avatarIan Munsie <imunsie@au1.ibm.com>
LKML-Reference: <1296703645-18718-4-git-send-email-imunsie@au1.ibm.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      c763ba06
    • Ian Munsie's avatar
      tracing/syscalls: Convert redundant syscall_nr checks into WARN_ON · 3773b389
      Ian Munsie authored 
      With the ftrace events now checking if the syscall_nr is valid upon
initialisation it should no longer be possible to register or unregister
a syscall event without a valid syscall_nr since they should not be
created. This adds a WARN_ON_ONCE in the register and unregister
functions to locate potential regressions in the future.
Signed-off-by: default avatarIan Munsie <imunsie@au1.ibm.com>
LKML-Reference: <1296703645-18718-3-git-send-email-imunsie@au1.ibm.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      3773b389
    • Ian Munsie's avatar
      tracing/syscalls: Don't add events for unmapped syscalls · ba976970
      Ian Munsie authored 
      FTRACE_SYSCALLS would create events for each and every system call, even
if it had failed to map the system call's name with it's number. This
resulted in a number of events being created that would not behave as
expected.

This could happen, for example, on architectures who's symbol names are
unusual and will not match the system call name. It could also happen
with system calls which were mapped to sys_ni_syscall.

This patch changes the default system call number in the metadata to -1.
If the system call name from the metadata is not successfully mapped to
a system call number during boot, than the event initialisation routine
will now return an error, preventing the event from being created.
Signed-off-by: default avatarIan Munsie <imunsie@au1.ibm.com>
LKML-Reference: <1296703645-18718-2-git-send-email-imunsie@au1.ibm.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      ba976970
  3. 07 Feb, 2011 2 commits
  5. 06 Feb, 2011 11 commits
  7. 05 Feb, 2011 7 commits
    • Thomas Gleixner's avatar
      m32r: Fixup last __do_IRQ leftover · a9fe8d5f
      Thomas Gleixner authored 
      Somehow I managed to miss the last __do_IRQ caller when I cleanup the
remaining users. m32r is fully converted to the generic irq layer, but
I managed to not commit the conversion of __do_IRQ() to
generic_handle_irq() after compile testing the quilt series :(
Pointed-out-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Paul Mundt <lethal@linux-sh.org>
      a9fe8d5f
    • Arnaldo Carvalho de Melo's avatar
      perf annotate: Config options for symbol__tty_annotate · d040bd36
      Arnaldo Carvalho de Melo authored 
      Max line# that should be printed, minimum percentage filter, just like
'perf top', alas, due to it :-)

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      d040bd36
    • Thomas Gleixner's avatar
      genirq: Add missing status flags to modification mask · 872434d6
      Thomas Gleixner authored 
      The mask which filters out the valid bits which can be set via
irq_modify_status() is missing IRQ_NO_BALANCING, which breaks UV.

Add IRQ_PER_CPU as well to avoid another one line patch for 39.
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      872434d6
    • Arnaldo Carvalho de Melo's avatar
      perf annotate: Support multiple histograms in annotation · 2f525d01
      Arnaldo Carvalho de Melo authored 
      The perf annotate tool continues aggregating everything on just one
histograms, but to support the top model add support for one histogram
perf evsel in the evlist.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      2f525d01
    • Arnaldo Carvalho de Melo's avatar
      perf annotate: Move annotate functions to util/ · 78f7defe
      Arnaldo Carvalho de Melo authored 
      They will be used by perf top, so that we have just one set of routines
to do annotation.

Rename "struct sym_priv" to "struct annotation", etc, to clarify this
code a bit.

Rename "struct sym_ext" to "struct source_line", to give it a meaningful
name, that clarifies that it is a the result of an addr2line call, that
is sorted by percentage one particular source code line appeared in the
annotation.

And since we're moving things around also rename 'sym_hist->ip' to
'sym_hist->addr' as we want to do data structure annotation at some
point.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      78f7defe
    • Arnaldo Carvalho de Melo's avatar
      perf top: Remove superfluous name_len field · 764328d3
      Arnaldo Carvalho de Melo authored 
      From the sym_entry struct, struct symbol already has this field.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      764328d3
    • H. Peter Anvin's avatar
      x86-32: Make sure the stack is set up before we use it · 11d4c3f9
      H. Peter Anvin authored 
      Since checkin ebba638a we call
verify_cpu even in 32-bit mode.  Unfortunately, calling a function
means using the stack, and the stack pointer was not initialized in
the 32-bit setup code!  This code initializes the stack pointer, and
simplifies the interface slightly since it is easier to rely on just a
pointer value rather than a descriptor; we need to have different
values for the segment register anyway.

This retains start_stack as a virtual address, even though a physical
address would be more convenient for 32 bits; the 64-bit code wants
the other way around...
Reported-by: default avatarMatthieu Castet <castet.matthieu@free.fr>
LKML-Reference: <4D41E86D.8060205@free.fr>
Tested-by: default avatarKees Cook <kees.cook@canonical.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
      11d4c3f9
  9. 04 Feb, 2011 14 commits
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7