On Wed, Mar 07, 2018 at 02:16:13PM +0530, Ravi Bangoria wrote:
> > W.T.H. is that called a semaphore? afaict its just a usage-counter.
>
> I totally agree with you. But it's not me who named it semaphore :)
>
> Please refer to "Semaphore Handling" section at:
> https://sourceware.org/systemtap/wi
On 03/06/2018 05:29 PM, Peter Zijlstra wrote:
> On Wed, Feb 28, 2018 at 01:23:44PM +0530, Ravi Bangoria wrote:
>> Userspace Statically Defined Tracepoints[1] are dtrace style markers
>> inside userspace applications. These markers are added by developer at
>> important places in the code. Each ma
On Wed, Feb 28, 2018 at 01:23:44PM +0530, Ravi Bangoria wrote:
> Userspace Statically Defined Tracepoints[1] are dtrace style markers
> inside userspace applications. These markers are added by developer at
> important places in the code. Each marker source expands to a single
> nop instruction in
On 03/01/2018 07:37 PM, Masami Hiramatsu wrote:
> On Wed, 28 Feb 2018 13:23:44 +0530
> Ravi Bangoria wrote:
>
>> @@ -502,6 +504,16 @@ static int create_trace_uprobe(int argc, char **argv)
>> for (i = 0; i < argc && i < MAX_TRACE_ARGS; i++) {
>> struct probe_arg *parg = &tu->tp.
On Wed, 28 Feb 2018 13:23:44 +0530
Ravi Bangoria wrote:
> Userspace Statically Defined Tracepoints[1] are dtrace style markers
> inside userspace applications. These markers are added by developer at
> important places in the code. Each marker source expands to a single
> nop instruction in the c
Userspace Statically Defined Tracepoints[1] are dtrace style markers
inside userspace applications. These markers are added by developer at
important places in the code. Each marker source expands to a single
nop instruction in the compiled code but there may be additional
overhead for computing th
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