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#ifndef __SUBCMD_EXEC_CMD_H
#define __SUBCMD_EXEC_CMD_H

extern void exec_cmd_init(const char *exec_name, const char *prefix,
			  const char *exec_path, const char *exec_path_env);

extern void set_argv_exec_path(const char *exec_path);
extern const char *extract_argv0_path(const char *path);
extern void setup_path(void);
extern int execv_cmd(const char **argv); /* NULL terminated */
extern int execl_cmd(const char *cmd, ...);
/* get_argv_exec_path and system_path return malloc'd string, caller must free it */
extern char *get_argv_exec_path(void);
extern char *system_path(const char *path);

#endif /* __SUBCMD_EXEC_CMD_H */
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authorMarc Zyngier <marc.zyngier@arm.com>2017-01-17 16:00:48 +0000
committerThomas Gleixner <tglx@linutronix.de>2017-01-30 15:18:56 +0100
commit08d85f3ea99f1eeafc4e8507936190e86a16ee8c (patch)
tree410bb1acd0cd7dcfaad37ae7b63ff243b7fa4bee /tools/power/acpi/Makefile
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
irqdomain: Avoid activating interrupts more than once
Since commit f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early"), we can end-up activating a PCI/MSI twice (once at allocation time, and once at startup time). This is normally of no consequences, except that there is some HW out there that may misbehave if activate is used more than once (the GICv3 ITS, for example, uses the activate callback to issue the MAPVI command, and the architecture spec says that "If there is an existing mapping for the EventID-DeviceID combination, behavior is UNPREDICTABLE"). While this could be worked around in each individual driver, it may make more sense to tackle the issue at the core level. In order to avoid getting in that situation, let's have a per-interrupt flag to remember if we have already activated that interrupt or not. Fixes: f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early") Reported-and-tested-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484668848-24361-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'tools/power/acpi/Makefile')