Revision 90f59ee41abf587ad4675a70434136c8707fdf4b authored by Daniel Bristot de Oliveira on 18 February 2022, 17:57:09 UTC, committed by Steven Rostedt (Google) on 26 February 2022, 02:05:30 UTC
When a trace instance creation fails, tools are printing:
Could not enable -> osnoiser <- tracer for tracing
Print the actual (and correct) name of the tracer it fails to enable.
Link: https://lkml.kernel.org/r/53ef0582605af91eca14b19dba9fc9febb95d4f9.1645206561.git.bristot@kernel.org
Fixes: b1696371d865 ("rtla: Helper functions for rtla")
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
1 parent 316f710
check_signature.c
// SPDX-License-Identifier: GPL-2.0
#include <linux/io.h>
#include <linux/export.h>
/**
* check_signature - find BIOS signatures
* @io_addr: mmio address to check
* @signature: signature block
* @length: length of signature
*
* Perform a signature comparison with the mmio address io_addr. This
* address should have been obtained by ioremap.
* Returns 1 on a match.
*/
int check_signature(const volatile void __iomem *io_addr,
const unsigned char *signature, int length)
{
while (length--) {
if (readb(io_addr) != *signature)
return 0;
io_addr++;
signature++;
}
return 1;
}
EXPORT_SYMBOL(check_signature);
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