c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 18:40:43 +03:00
Code Issues Packages Projects Releases Wiki Activity

Reviewed and applied spl-01-rm-gpl-symbol-set_cpus_allowed.patch

Browse Source 
from Ricardo which removes a dependency on the GPL-only symbol
set_cpus_allowed().  Using this symbol is simpler but in the name
of portability we are adopting a spinlock based solution here
to remove this dependency.



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@160 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
This commit is contained in:
behlendo
2008-11-03 20:07:20 +00:00
parent d50bd9e221
commit f6c81c5ea7
2 changed files with 79 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/debug.h
+11 -2
View File
@@ -157,6 +157,15 @@ union trace_data_union {
unsigned short tcd_type;
/* The factors to share debug memory. */
unsigned short tcd_pages_factor;
/*
* This spinlock is needed to workaround the problem of
* set_cpus_allowed() being GPL-only. Since we cannot
* schedule a thread on a specific CPU when dumping the
* pages, we must use the spinlock for mutual exclusion.
*/
spinlock_t tcd_lock;
unsigned long tcd_lock_flags;
} tcd;
char __pad[L1_CACHE_ALIGN(sizeof(struct trace_cpu_data))];
};
@@ -168,9 +177,9 @@ extern union trace_data_union (*trace_data[TCD_TYPE_MAX])[NR_CPUS];
for (j = 0, ((tcd) = &(*trace_data[i])[j].tcd); \
j < num_possible_cpus(); j++, (tcd) = &(*trace_data[i])[j].tcd)
#define tcd_for_each_type_lock(tcd, i) \
#define tcd_for_each_type_lock(tcd, i, cpu) \
for (i = 0; trace_data[i] && \
(tcd = &(*trace_data[i])[smp_processor_id()].tcd) && \
(tcd = &(*trace_data[i])[cpu].tcd) && \
trace_lock_tcd(tcd); trace_unlock_tcd(tcd), i++)
struct trace_page {